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Home My WebLink About20181866.tiffJ&T Consulting, Inc. June 8, 2018 Department of Natural Resources Division of Reclamation, Mining, and Safety Mr. Eric Scott Environmental Protection Specialist, P.G., R.G. 1313 Sherman Street Room 215 Denver, CO 80203 RECEIVE* JUN 0 8 201g WELD CuuNTY _PEW RE: Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Dear Mr. Scott: J&T Consulting, Inc. and Broken Arrow Investments, LLC have reviewed the comments we received in your "Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-107" letter dated March 15, 2018. Below are the comments and the corresponding responses that have been provided to address the comments. EXHIBIT C - Pre-mininq and Mining Plan Map(s) of Affected Lands (Rule 6.4.3): While the Exhibit_C map as provided appears to contain most of the required information, compressing it into one black and white map makes it very difficult to read. Please separate the required information into more legible maps. The current and proposed permit boundary should be clearly delineated on all figures. DRMS suggests the following breakout of the provided/required information, but is open to other arrangements as long as all required information is present and easily legible: C-1 Adjacent surface owners/info with parcel lines/lot lines, contour data, vegetation data, and floodplain boundary (floodplain delineation not visible on current map). C-2 All structures and utilities and ownership information within, and within 200' of, the proposed permit area and proposed mining setbacks. This data should correlate to structures and structure agreement information provided in Exhibit S. C-3 Mining Plan Map - show proposed mine phases, mining limits, and all mining related features (slurry wall, topsoil and overburden stockpiles, plant and scale locations, buildings, typical mining section, dewatering pond, etc.). Response: Exhibit C maps have been updated as requested See the attached updated Exhibit C maps. uJoice. Re tnew ec.: PL(. Aki-cp), 305 Denver Avenue — Suite D • Fort Luptop CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 OG-1' - 18 Pw(ER /Ck/TM/CK) 06,-/A -18 2018-1866 JT June 8, 2018 J&T Consulting, Inc. Department of Natural Resources Division of Reclamation, Mining, and Safety Mr. Eric Scott Environmental Protection Specialist, P.G., R.G. 1313 Sherman Street Room 215 Denver, CO 80203 RE: Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Dear Mr. Scott: J&T Consulting, Inc. and Broken Arrow Investments, LLC have reviewed the comments we received in your "Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-107" letter dated March 15, 2018. Below are the comments and the corresponding responses that have been provided to address the comments. EXHIBIT C - Pre -mining and Mining Plan Map(s) of Affected Lands (Rule 6.4.3): While the Exhibit_C map as provided appears to contain most of the required information, compressing it into one black and white map makes it very difficult to read. Please separate the required information into more legible maps. The current and proposed permit boundary should be clearly delineated on all figures. DRMS suggests the following breakout of the provided/required information, but is open to other arrangements as long as all required information is present and easily legible: C-1 Adjacent surface owners/info with parcel lines/lot lines, contour data, vegetation data, and floodplain boundary (floodplain delineation not visible on current map). C-2 All structures and utilities and ownership information within, and within 200' of, the proposed permit area and proposed mining setbacks. This data should correlate to structures and structure agreement information provided in Exhibit S. C-3 Mining Plan Map - show proposed mine phases, mining limits, and all mining related features (slurry wall, topsoil and overburden stockpiles, plant and scale locations, buildings, typical mining section, dewatering pond, etc.). Response: Exhibit C maps have been updated as requested. See the attached updated Exhibit C maps. © 305 Denver Avenue— Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 Mr. Scott Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Page 2 EXHIBIT D - Mining Plan (Rule 6.4.4): The fourth paragraph of Exhibit D states that setbacks of less than 200' may be used for structures with existing surface use agreements/damage waiver agreements. Please specify in detail what structures/agreements are being referred to (this information may also be provided as part of Exhibit S). DRMS notes that prior damage waiver agreements have been obtained from the City of Greeley, DCP Midstream, and Loloff Construction as provided in Exhibit S. DRMS considers that the entire proposed permit area is potentially affected area at this time. No evidence has been provided that any structure owners (other than the three listed above) inside, or within 200', of the existing or proposed permit area have been provided with damage waiver agreements. This demonstration is required by DRMS prior to acceptance of a geotechnical stability exhibit such as the one provided for the first four phases of the proposed operation (See comments for Exhibit S for further information). DRMS cannot approve the permit amendment unless/until all structure owners within and within 200' of the proposed permit area are provided with damage waiver agreements. Response: The existing surface use/damage waiver agreements that have been obtained and the associated structures are listed in Exhibit S along with a listing of other damage waiver agreements that are being pursued to structure owners within 200 feet of the affected area, and the structures associated with those agreements. See the attached updated Exhibit S. EXHIBIT E - Reclamation Plan (Rule 6.4.5): If the proposed lined reservoirs lie within the flood -plain, the operator will need to install engineered inlet/outlet structures to protect the integrity of the liner during a flood event. If pumping/water control features associated with the developed water resource will be constructed prior to release of the permit as proposed here, the permittee will be required to submit a detailed engineered design for these features either as part of this amendment or through a Technical Revision prior to construction. Cost for construction of these features will need to be included in the reclamation bond. These requirements also apply to the required engineered flood control structures, and installation of a perimeter drain/French drain to control groundwater levels around areas enclosed by the proposed slurry walls. Please acknowledge. Response: The north cell reservoir is outside the floodplain. The south cell reservoir is in the very outer fringe of the floodplain. Because the south cell reservoir is more than 2000 feet away from the river channel to the south, the site is level, and there is no above grade embankment around the reservoir, a side channel spillway is not required, and in fact could not be constructed, to convey flows into the pit. Any flood flow that enters the pit will be contained there and will not exit the pit after the flood event ends. Flood flows will not be concentrated and if they enter the reservoir will do so in a sheet flow condition. It is anticipated that minimal to no damage to the reservoir side slopes will occur. Some minor erosion may occur on the side slopes. No damage to the slurry wall liner is anticipated as it is set back from the reservoir side slopes. © 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 Mr. Scott Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Page 3 The pumping/water control features associated with the developed water resource will be constructed after the release of the permit. Exhibit E has been updated accordingly to clarify this. See the attached updated Exhibit E. Costs for the pumping/water control features have not been included in the reclamation bond because they will be constructed after the release of the permit. Costs for engineered flood control structures have not been included in the reclamation bond because they are not necessary. Costs for a perimeter drain have been included in the reclamation costs. See the attached updated Exhibit L. See also the attached updated Exhibit F maps. EXHIBIT G - Water Information (Rule 6.4.7): Due to the potential impacts to the surrounding_groundwater table from the proposed operation, a groundwater monitoring plan will be required to be submitted to DRMS and approved prior to exposure of groundwater at the site. Additional monitoring well locations will likely be required to monitor for potential off -site impacts to groundwater levels resulting from the proposed site activities. The required groundwater monitoring plan shall include, at a minimum: 1) Map depicting the locations of all current and proposed groundwater monitoring locations associated with this site. 2) Boring logs/well construction diagrams for all current groundwater monitoring wells associated with this site and future wells after installation. 3) Monitoring data collection and reporting methods and frequency. 4) Summary of any existing data available from current monitoring well locations and any nearby accessible monitoring or domestic wells that will help characterize the background conditions, historic water levels and seasonal fluctuations, and groundwater flow direction in the vicinity of the site. 5) Proposed "trigger levels" for each well that will identify when groundwater impacts (rise or fall) have reached levels that will require reporting to DRMS, and may require additional monitoring or mitigation actions. 6) Proposed mitigation actions that may be implemented if impacts to groundwater are observed consistently above trigger levels, or off -site impacts are observed. 7) The permittee will also be required to demonstrate that they are in compliance with the requirements of Rule 3.1.6 (1)(b), "compliance with applicable federal and Colorado water quality laws and regulations, including statewide water quality standards and site -specific classifications and standards adopted by the Colorado Water Quality Control Commission." This site is in a non -classified area, and therefore the Table Value Standards of the statewide Interim Narrative Standard from WQCC Regulation 41 apply © 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 Mr. Scott Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Page 4 to groundwater for this site. The permittee should include a plan to characterize background groundwater quality, and be able to demonstrate with defensible groundwater monitoring data that these standards have not been exceeded during mining and reclamation operations. Response: 1. A monitoring well location map is attached showing the location of the existing monitoring wells on the site. Future monitor well locations will be determined after the design of the northern slurry wall around phases 5-7. In general monitoring wells will be constructed at intervals around the perimeter of the reservoir, outside the slurry wall, to monitor groundwater levels both upstream and downstream of the slurry wall. 2. Boring logs for each of the existing monitoring wells are attached. Boring logs for future wells will be provided to the Division when they are constructed. 3. The existing monitoring wells are measured monthly. Future monitoring wells will be measured monthly. Monitor well data is tabulated in a table showing the date of each measurement, monitoring well number. 4. Attached are historic readings for the existing monitoring wells. 5. Per the previously approved permit the trigger level that would require notification to DRMS and possible mitigation is as follows: a. A three (3) foot difference in the depth to groundwater from the seasonal groundwater levels in two or more piezometers as observed in the previous year's monthly measurements for two consecutive months. 6. A perimeter drain groundwater equalization pipe system would be the measure used to mitigate groundwater impacts resulting from the installation of the slurry wall. This system would redirect groundwater around the slurry wall lined cells to equalize the groundwater levels around the reservoirs. This measure would be implemented should mounding upgradient or shadowing downgradient of the lined reservoirs reach the trigger level noted above. 7. Broken Arrow Investments has an approved groundwater discharge permit in place through CDPHE to ensure that water quality is not adversely affected by the mining activities. They are in full compliance with all requirements of the permit. EXHIBIT J - Vegetation Information (Rule 6.4.10): Reference is made to a letter provided by US Army_Corps of Engineers stating that wetlands identified during the site study were determined by USACOE to be non -jurisdictional, however, that letter was not part of the application as submitted — please provide this documentation. Response: The non jurisdictional determination letter is attached for your reference. EXHIBIT L - Reclamation Costs (Rule 6.4.12): DRMS is currently reviewing the Reclamation Estimate_provided. Items identified at this time which will require modification include: © 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 Mr. Scott Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Page 5 1) Costs associated with design and installation of pumping/water management structures, engineered flood control structures for lined reservoirs within the flood plain, and perimeter drains as stated in the comments for Exhibit E. 2) DRMS will not bond for the final slurry wall configuration in "phases". The required bond for the construction of the final slurry wall configuration will be required to be posed before groundwater is exposed in any phase within that slurry wall (phases 1-4, phases 5-7). 3) Please submit documentation for the direct costs provided in Exhibit L. 4) You will be contacted if additional information is required as the adequacy issues are resolved. Response: 1. See the response to Exhibit E comments. No costs for pumping/water management structures or flood control structures have been included in the Costs for a perimeter drain have been included in the reclamation costs. 2. The reclamation costs have been updated to include costs for the final slurry wall configuration. See the attached updated Exhibit L. 3. See the attached price proposal from Great Lakes Environmental and Infrastructure for details on direct costs for the slurry wall construction. 4. No response required. EXHIBIT S - Permanent Man -Made Structures (Rule 6.4.19): DRMS considers the entire proposed_permit area to be potentially affected area at this time. No evidence has been provided that any structure owners inside, or within 200', of the existing or proposed permit area have been provided with damage waiver agreements (other than the City of Greeley, Loloff Construction, and DCP Midstream as provided). This demonstration is required by DRMS prior to acceptance of a geotechnical stability exhibit such as the one provided for the first four phases of the proposed operation. DRMS cannot approve the permit amendment unless/until: 1) All structure owners within, and within 200 feet of the proposed permit area are provided with damage waiver agreements, and proof of this has been submitted to DRMS. To facilitate this process, please provide a detailed breakdown of all applicable structures by structure owners, and show the structures/locations on to a map depicting this information. Listing structures only by type, as submitted in Exhibit S, is inadequate. 2) Executed damage waivers for those structures have been received and submitted to DRMS, or a geotechnical evaluation has been conducted to determine that those structures that have not returned executed damage waiver agreements will not be adversely impacted by mining activity. The geotechnical assessment must provide information sufficient to demonstrate that the stability of any structures located within two hundred (200) feet of the operation or affected land will not be adversely affected. © 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 Mr. Scott Response to Preliminary Review of a 112 Construction Materials Reclamation Permit Amendment Package, Derr Pit, Permit M2008-017 Page 6 Please provide evidence (certified letter to structure owners) that a notarized agreement between the structure owners and the applicant was pursued. If an agreement is unable to be reached a geotechnical assessment may be provided to demonstrate that the structures shall not be damaged. Response: 1. Damage waivers have been provided to all structure owners within 200 ft of the permit area. See the attached damage waiver agreements and certified mail receipts. A detailed listing of structures and owners has been included in Exhibit S. All structures/owners have been shown on the updated Exhibit C maps. See the attached updated Exhibit S. 2. A geotechnical slope stability analysis has been done to ensure that no structures will be adversely affected by the mining. See the slope stability report attached to the updated Exhibit S. Thank you for your consideration of the responses we are providing and the revised exhibits for the amendment request. Please feel free to contact me with any questions or comments. Cordially, J.C. York, P.E. Attachments: Updated Exhibit C Maps Updated Exhibit E Narrative Updated Exhibit F Maps Exhibit G Monitor Well Map, Boring Logs, & Readings Exhibit J ACOE Non -Jurisdictional Determination Letter Updated Exhibit L Narrative, calculations, and slurry wall direct cost documentation Updated Exhibit S Narrative, Damage Waiver Agreements with Certified Mail Receipts, Slope Stability Analysis © 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 FILE CONTAINS OVERSIZED MAP PLEASE SEE ORIGINAL FILE EXHIBIT E Reclamation Plan Water storage will be the primary final reclaimed use for the Derr Pit Project site. Portions of mining areas will be backfilled and reclaimed as "native" areas, which will be re -seeded with native vegetation and will also include areas where native trees could be re -planted. The majority of the mining areas will be reclaimed as a water storage reservoir. The remaining area within the proposed permit boundary will consist of reservoir shoreline, unimproved access roads around the reservoir, and reclaimed or otherwise undisturbed land. The approximate acreage of each of these areas is: Final Land Use Reclamation Plan Area (acres) Alternate Reclamation Plan Area (acres) Reservoir(s) Water Surface 64.30 68.41 Street/County Roads/Access Roads 4.65 4.65 Reclaimed Vegetated Land and Undisturbed Land 71.10 71.99 TOTAL 145.05 145.05 Water Storage Reservoir(s) In general, the mining limits will be mined to the siltstone/claystone bedrock. The relatively impermeable bedrock will make the bottom of the reservoir. The reservoir will also be separated from the surrounding alluvial aquifer by a slurry wall liner. The slurry wall liner will be keyed into the bedrock material and extend upward through the entire height of the alluvium. Design specifications and quality control procedures used during construction of the slurry wall liner will ensure that the reservoir meets State Engineer's Office (SEO) performance standards for permeability. The slurry wall liner will be constructed between year two and year three of the mining. All reservoir slopes left by the mining operation will be reclaimed to at least 3H:1 V final grade. Reclamation of the exterior cell walls will be concurrent with mining. Since reclamation will be concurrent with mining, most soil, overburden, and bedrock material excavated during mining will be used almost immediately. Scrapers and dozers will be used to place overburden material along the reservoir perimeters to achieve the final grade. Upon placing the backfill material, 95 percent compaction will be achieved to insure adequate integrity of the slope. Final reclamation by capping with topsoil and re - vegetating above the expected reservoir water level will follow backfilling operations closely to minimize the amount of disturbance at any one time. After reclamation activities are complete and the permit is released, inlet and outlet facilities for the reservoir will be designed and installed once the end use of the proposed reservoir(s) has been identified. The general location for the inlet/outlet facility has been shown on the reclamation plan map for reference. It is anticipated that the LIJ&T Consulting, Inc. Derr Pit Project DRMS 112 Permit structure will function as an inlet and outlet as it will be a wet well with a pump station. The wet well will accept incoming flows that will fill the reservoir. The incoming flow will enter the top of the wet well and exit through an inlet/outlet pipe that is placed at the bottom of the wet well and extends out into the reservoir on the bottom of the reservoir floor. The inlet/outlet pipe on the bottom of the wet well will also function as an equalizer pipe to allow water into the wet well so when the discharge pump station is operated water can be pumped/removed and discharged to the end users system for use as augmentation water or perhaps raw water that could be treated and used for potable water. Reclamation Measures/Materials Handling Backfilling will be done to provide stabilized shorelines around the reservoir and to minimize erosion. The backfill material will consist of native bedrock claystone, gravel, overburden, and topsoil. There will not be known toxic or hazardous materials in the backfill material. Additionally, it is not likely that acid forming or toxic materials will be encountered during mining. The mining will not leave high walls on the property. In addition, there will be no auger holes, excavations, or shafts left on the property. Overburden and topsoil that is removed during the mining will be used to reclaim the mining slopes and areas that are disturbed during the mining such as haul/access roads and the recharge pond. Overburden will be placed in the areas such as haul/roads and the recharge pond to bring the grade to the final reclaimed elevation. The overburden may also be spread on the 3H:1V mining slope to use the excess overburden to exhaustion. This will be accomplished by using a dozer to spread the overburden material to a depth of one foot or less across the entire mining slope thus maintaining a 3H:1V slope. The slope will be compacted as described in the previous paragraphs for the Water Storage Reservoir. Topsoil will then be placed to finalize the grading such that seeding can occur. The topsoil will be placed at all disturbed areas and on the mining slope to an elevation matching the expected reservoir water level. Top soiling The top six inches of soil on the property is classified as topsoil. This layer includes the root zone of grasses and crops, which will be stripped and stockpiled separately. By using concurrent reclamation techniques, the topsoil is not expected to remain in stockpiles for more than one to five years. If the stockpile remains more than one growing season, it will be seeded with a fast growing vegetative cover to prevent erosion. All topsoil will be retained on -site to reclaim the reservoir shoreline, and other areas disturbed by mining activities. Where required, topsoil will be replaced to a depth of approximately twelve inches. Revegetation As mining operations are completed, areas for reclamation will be graded and shaped for revegetation. Runoff or excess water from adjacent areas will not be allowed to flow over slopes being graded and seeded. If needed, berms or channels will be constructed to divert excess water and dispose of it in a safe and non -erosive manner. J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit Upland Areas. For disturbed upland areas, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and reestablish natural terrain. The grass mixture below was selected to be long lasting and regenerating, as recommended by the Greeley NRCS field office. The ground will be fine graded prior to seeding according to recommendations from the Natural Resource Conservation Service. Reservoir side slopes below the anticipated reservoir water level will not be seeded. The proposed seed mix is shown in the following table. Upland Grass Seed Application Rate (#PLS/acre) % in mix Switchgrass (Greenville, Nebraska 28, Blackwell, Pathfinder) 0.8 #PLS/ac 20 Yellow Indiangrass (Lano, Holt, Cheyenne, Oto) 1.0 #PLS/ac 10 Sideoats Grama 1.8 #PLS/ac 20 Blue Grama (Hachital, Lovington) 0.3 #PLS/ac 10 Western Wheatgrass (Arriba, Bartonk, Rosana) 4.0 #PLS/ac 25 Sand Dropseed 0.03 #PLS/ac 5 Little Bluestem 0.7 #PLS/ac 10 Totals 8.63 #PLS/ac 100 Application rate is for drilling the seed. If seed is to be broadcast, the application rate will be doubled. The seed mix for final reclamation as described above does not require fertilizer as recommended by the local NRCS office in Greeley, Colorado. The seed mix was revised slightly per the NRCS's latest recommendations that require less seed to be drilled or broadcast per acre of disturbed area. Upland grass seed will be planted with a drill equipped with depth bands and press wheels. The seed should be drilled in the spring in the month of April for best results. The seeded areas will then be covered with straw mulch at a rate of 4,000 pounds per acre. The straw will be crimped into the soil to control erosion until the grass becomes established. See the attached NRCS seeding recommendations. If a significant invasion of noxious weeds occurs after seeding, the weeds will be mowed before they can go to seed. The areas will be mowed periodically for additional control as needed. Mechanical control will be used as a first priority. Chemical methods will only be used if no other alternative produces acceptable results. Temporary Stockpile Areas. For temporary stockpiles, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and establish more rapidly to stabilize the stockpiles. The grass mixture below was selected as recommended by the Greeley NRCS field office. The proposed seed mix is shown in the following table. J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit Temporary Stockpile Seed Application Rate* (#PLS/acre) % in mix Slender wheatgrass 2.8 #PLS/ac 25 Smooth bromegrass 3.9 #PLS/ac 30 Pubescent wheatgrass 4.2 #PLS/ac 30 Sand dropseed 0.03 #PLS/ac 5 Crested wheatgrass 0.6 #PLS/ac 10 Totals 11.53 #PLS/ac 100 * Application rate is for drilling the seed. If seed is to be broadcast, the application rate will be doubled. The seed mix for final reclamation as described above does not require fertilizer as recommended by the local NRCS office in Greeley, Colorado Water — General Requirement To minimize the effect on the prevailing hydrologic balance, the operator shall: a. Comply with all applicable Colorado water laws. b. Comply with all applicable Federal and State water quality laws and regulations. c. Comply with all Federal and State requirements for dredge and fill. d. Re -grade and backfill all sediment and siltation structures after mining is completed. Groundwater — Specific Requirements The operation will not affect groundwater quality on or off the site. The operation will comply with State groundwater quality standards. Due to the absence of sources of potential pollutants, groundwater quality monitoring is not required in this operation. The mining and reclamation will affect the groundwater table surrounding the mine site. Proposed . mitigation efforts to minimize these impacts are a recharge pond along the southeast corner of the property to maintain groundwater levels during the mining, and a perimeter drain if needed to convey groundwater around the lined reservoir after the slurry wall is installed. The depth to groundwater has been measured on a monthly basis in piezometers located on the interior and exterior of the proposed slurry wall alignment since October 2006. Groundwater depths will continue to be measured and recorded at monthly intervals in each piezometer to establish what the seasonal groundwater levels are. These measurements will be used as a benchmark for maintaining the groundwater levels in subsequent years. The triggers that would require the perimeter drain to be installed are as follows: J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit A three foot difference in the depth to groundwater from the seasonal groundwater levels in two or more piezometers as observed in the previous years monthly measurements for two consecutive months. Broken Arrow Investments, LLC proposes that the groundwater elevations be monitored through onsite wells before, during, and after the mining and reclamation is complete so that impacts to the groundwater table, from this mining operation, can be identified and addressed. It is the intent of Broken Arrow Investments, LLC to operate responsibly and to mitigate damages to wells that are directly attributable to the mining and reclamation of this site. For more specific information please refer to the well owner agreements and narrative included in Exhibit G. Reclamation — Approximate Time Table The proposed rate of production for the mine is 300,000 to 600,000 tons per year. The total time frame to mine every phase is approximately 12 to 24 years which allows for years where the 300,000 to 600,000 tons per year production rate is less. The following table shows the approximate time frame to finish each phase of mining: Mine Phase and Acreage Time Frame to Complete and Reclaim Phase Phase 1 — 6.92 acres 2 years and 7 months Phase 2 — 6.81 acres 2 years and 7 months Phase 3 — 8.21 acres 3years and 3 months Phase 4 — 9.90 acres 3 years and 10 months Phase 5 — 16.71 acres 4 years and 8 months Phase 6 — 11.69 acres 3 years and 3 months Phase 7 — 14.71 acres 4 years and 1 months The assumed maximum production rate is 300,000 to 600,000 tons for processed material leaving the mine each year. An average production rate of 300,000 tons per year was used to calculate the reclamation time table. The size and area of reclamation varies for each phase but generally consists of the outside mining slope being reclaimed at a 3H:1V slope with the addition of overburden, topsoil, and revegetation. For more information on sequencing and size of the reclamation activities refer to Exhibit L financial warranty calculations. Reclamation Plan and Alternate Reclamation Plan The reclamation plan attached in Exhibit F depicts the reclaimed reservoir(s) with an existing oil/gas well in the center of the reservoir with setbacks recommended per the existing slope stability study, for the area that was originally permitted, that will be implemented if an agreement with the oil/gas companies cannot be reached to re -locate the existing well. All the additional areas in the amendment will not be mined within 200 feet until an agreement with the oil/gas companies, property owner(s), or utility owner(s) can be executed or a slope stability analysis can be performed if an agreement cannot J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit be reached. An alternate reclamation plan has also been included depicting the reservoir for the original permit without the existing oil/gas well remaining in place. The alternate plan has been submitted in the event that the surface use agreement with the oil/gas company will be finalized and the existing well could be re-located/abandoned as a part of the proposed surface use agreement. J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit EAST C STREET r MW 15 s\2018 Monitoring Well Location.dwg, Layoutl, 6/7/2018 12:41:04 PM P:\07123 Derr Gravel Pit\Drawi BALSAM AVE. MW 7 MW 6 (1111/1W 9 MW 10 / MW8 / AlMW 11 MW 12 MW 13 tr MW 1 LEGEND: MW2 MW3 O® MONITORING WELL MW 12 MONITORING WELL NUMBER I ici 400 200 0 400 SCALE IN FEET J&T Consulting, Inc. 1400 W 122nd Avenue - Suite 120 Westminster, CO 60234 303-457-0735 BROKEN ARROW INVESTMENTS, LLC DERR PIT MONITORING WELL LOCATION MAP Date: 6/7/18 Job No: 07123 Drawn: WSS Scale: 1" = 400' Sheet: 1 Of: 1 2017 Monitor Well Static Water Levels Derr Pit/ Weld, CO DATE OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEPT Monitor Well Number Top of Well Elevation MW1 18 17 17 30 30 30 30 30 30 27 23 20 4635.90 MW2 17 17 17 27 27 27 27 27 27 23 20 18 4635.40 MW3 18 17 17 26 26 26 26 26 26 25 20 18 4636.90 MW4 18 17 17 20 22 20 20 20 20 20 19 18 4636.10 MW5 18 17 17 20 20 20 20 20 20 20 19 18 4635.30 MW6 17 17 17 23 23 22 23 23 23 23 20 18 4637.90 MW7 16 16 17 23 23 23 23 23 23 23 20 18 4639.90 MW8 17 16 16 23 23 23 23 23 23 23 21 19 4639.60 MW9 16 15 16 28 28 28 26 27 28 25 20 17 4638.80 MW10 16 14 15 25 25 25 23 24 25 23 20 17 4637.00 MW11 17 15 14 24 25 24 23 24 24 23 20 18 4635.00 MW12 18 17 17 26 25 25 25 25 26 25 20 17 4635.80 MW13 25 23 23 24 24 25 23 23 18 4635.80 MW14 52 50 50 51 51 52 50 50 4665.10 MW15 15 52 52 51 51 51 52 52 52 4664.80 LOG OF TEST BORE -1 (Log 1 of 3) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: i Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a a) us t X13 rnm cux 0 3a s. C o - �f �. V CO E.* cav 4t H y) c w L G C Drn a. co CD m SILTY SAND WITH GRAVEL . _ t 3 4 7 ; i l i SILTY SAND WITH GRAVEL GROUNDWATER 9 10 .t S .,- GRAVEL WITH COBBLE ♦♦.♦ 11 12 14 15 16 17 ' 18 - ♦.w ♦... ♦♦ ♦.♦. ♦♦.., •IP** ♦♦.., .... ...., .♦.., ♦♦.♦. .iii. ♦ ♦../ ...+r. ±aa. ••••+,1.9 . 1 a t. : , t ; SILTY SAND & GRAVEL WITH A l COBBLE 20 ? 21 22 22 23 24-- 25 ,,t r. r, "'; ai. } l C The stratification Imes represent the approximate boundaryiines between soil and rock types. Insltu. the transition may be gradual.'" Water Observations Boring Started` 10/16/2005 initial WL: 8' T.R.T. Boring Complete: 1O/16/2006 Logged By: TM Water Chebked:, j 10/16/06 Two Rivers Testing, Inc. Approved By. TMC SILTY SAND & GRAVEL WITH 2& COBBLE. 27 CLAY TONE (WEATHERED 44 BROWNfRUST} LAYSTONE.(GREY} 4 The ,raW cation }Ines reore e tne approximate b el es betw een s4( and rock types, tr sit:i. the transi#ton may be grad V ate r Observations �Boting tarfed: ttaft r2006 Inits WL, $' Baring Complete: 10 2' Lagged By T Two Rivers Testing. ;I IIIIII�1 i LOG OF TEST BORE - 2 Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description z 0 n 109 p u1th z > O ii.0 E w c 0 - 3 Dry Density (pct) E ' Plastic Index Passing #200 Unconfined Strength (ps° w a: m P. Q O s - SILTY SAND WITH GRAVEL 0 l E l i l i l l � { i r , 2 .: SILTY SAND +& GRAVEL WITH r r;ts 4 Y. 14 v►x*t. w. eta %19O •ti•.ti . tixS .z. ti '•:•} ti• Sr • • GOBBLE 5 6 7 8 GROUNDWATER V 10 11 12 13 14 16 17 SILTY SAN b WITH COBBLE 18 20 .. 21 22 23 24 25 The strati/ ation lines represent the approxlmate boundary Irnes'between soil and rock typeslnsitu, the transition maybe gradual, Water Observations T.R.T.ng 1 'ti..Boring Two Rivers Testing, Inc, Started: 10/16/2006 Initial WL r 9' Complete- 10116/2005 WL: 9` Logged By TM Water Checked 0/16/06 Approved 6y: TMC LOG OF TEST BORE - 2 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.; 2006-201 M 0 toF O j r r rn tn tn > zz z O O 0 G) O n m` '.. r m • tit A ` 71.64 *to d b A .q A W tr -trt W W 4i W G! j W N to' N N O tD W �.t Ct in �P W N -+ p ip. pa- -,t iri. tlt '�P 41 N O- tQ te .. rr4' �Y��.w?.•S "i,• a,, yr„y��4�� iY Y• ' • �. { LOG OF TEST BORE - 2 (Log 3 of 4) Client: bust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (tt.) Sample Typo SPT-N (BLOVVS/F41) w U L. v a .q c a O E J :0 J }C , a C: n. re Unconfined Strength (psi) y - CO rn O ua 0 SILTY SAND GRAVEL WITH 51 T ?$ Y.4.•, ¢.. cy t } �_ ,. ,. ..� e x; il { r 1 j 1 w I � i ' r ' COBBLE SANDY SILTY CLAY S2 53 SILTY SAND WITH GRAVEL 54 55 56 57 58 59w 60 61 62 63 64 65 SILTY SAND & GRAVEL WITH COBBLE 5G 67 68 69 70 71 72 73x 74 75 The stratification lines represent the approximate boundary lines between soil and rock types. InSitu, the transition may gradual Water Observations Two Rivers Testing, Ir1C. Boring Started. 10/1612006 Initial WL: 9' Boring Complete'. 10/16/2006 i Logged By: TM Water Checked: i 10/16/06 Approved By TMC LUG OF TEST BORE - 2 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) Sample Type SPT-N (BLOWS/FT) Water Content (%) Dry Density (pct) Liquid Limit 4, C U @ 0. o cv __ e a �" € ..-_, c D co : 3 rn ,O *- to curs 76 ,_..,,..,...s,..s .‘ac, SILTY SAND & GRAVEL WITH �� COBBLE 77 78 79 81 1 ., 82 _;,,i.{ 83 - , i 84 ANDY SILTY CLAY 85 SILTSTONE (GREY) 68 ; 86 87 6088 I i i i 89 f 125 t 1 t 1 90 76 l I I I 91 92 , 93 94 95 96 97 . 98 99 -• i 100 The stratification lines represenf the approximate boundary lines'between soil and rock types. nsitu, the transition may be gradual. Water Observations T T Boring Started: 10116/2006 Initial WL 9' Boring Complete: 10116/2006 WL : 9' logged By TM Water Checked, 10/16/06 , Two Rivers Testing, Inc. Approved By TMC LOG OF TEST BORE - 3 (Log I of 4) Client: Dust & Dirt Excavatinj Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Description Z. C a a - E UI tr r� ,5 F 9 CO 11 Water Content (%) Dry Density (pct) m . n x u u ro a o or m a.o- 3 b .5 m cc rn BE E m co i o I -- co 4 t1 D -M'37,:, -=',k = •h^..hu:?f `"°" y„..- ,..c.-i^�...x.+�.+.e'?n�: .- '' �. ,, .l �g,P` „ . .. �- ....-•.-.--,-17,-,--r-..-7.--"," SILTY SAND WITH GRAVEL 1 ; 2 3 = - SILTY SAND S. GRAVEL WITH 5 6 'r r4r;r wee, COBBLE 8 rtrtr , !!i 10 ,• krer, r ' 12 ✓',y� r- r r' i 1 ¢ i 13 14 15 rr ei A 16 r'ar:; 17 �rr'T 5 r r GROUNDWATER 18 .r ' 19 20 r� 21 r �r� r 22 (j 23 24 • ��,; 25 " rrrre S} The stratification lines represent the approximate boundary lines between soil and rock types insifu, the transition may be gradual. Water Observations Boring Started' 10/17/2006 Initial WL: 9 T. R. 1 Boring Complete- 10/17/2006 WL, 9' • Logged By: TM Water Checked: 1 10/17/06 Two Rivers Testing, Inc. Approved ay, 'M LOG OF TEST BORE "- 3 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description0. ID rm Yt g3 O o_ `i tal FP- Uti m . p Gt ' ' _� o NI N rvc0 Z. c.ar oc a - �r r SILTY SAND & GRAVEL WITH COBBLE 1 r 1 r I 28 29`r�.rr.r. 30 32 4 7 38 9 4�3 41 42 frwtt, :� we re: rr # I I r t I I l I r 1 1 I: t 1 1. I a i 4 1 1 t 3 1 r ‘SANDY SILTY CLAY SILTY SAND & GRAVEL WITH 43 COBBLE I I I I 48 r rtrr _ .' 1<` I I t r 1 r: I 1 1 1 ! I C l l t ). r. I f r r The /rat=`1cation I nes represent the approximate boundary lines between snit ano rock types ln� s� tt, the .vensition may gradual. Water Observations Baring Started: 10/1712006 Initial WL: T. RBoring Complete. 10/17120• 11UL: 4 06 9' Logged By: TM Water Checked: 1 101/7/06 Two Rivers Testing, Inc. Approved Dy; TMC LOG OF TEST BORE - 3 (Log 3 of 4) Client Dust & Dirt Excavating Project: Scurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No. 2006-201 Description Oepth (ft.) Sample Type R Z r- O v U v c „ 73 Plastic Index % Passing noo g = 01n P g m rd rQ C) co SILTY SAND &GRAVEL WITH 51 Viz; £yj ya, �*d, 0 fr .. lf+f .rte- 4 .'^^',x: f f w'�e I I I a i ' r i r COBBLE 52 53 54 55 56 57 6$ 59 60 61 62 63 65 SILTY SAND & GRAVEL _ r r i 66 67 68 69 70 71 72 73 74 75 ::;j 6.3 r 3. GW w t r I = ! ! f i r The stratification lines represent the approximate boundary lines between soil and rock types. insitu, the transition may 1e gradual. Water Observations T . }. T . Two Rivers Testing, Inc'- Boring Started. /0117/2006 initial WL; 9 Boring Conmpiete 10/1712006WL; 9' Logged By TM Water Checked. ( 10117/06 Approved By TMC , LOG OF TEST BORE - 3 Log 4 of 4) Client: Dust & Dirt Excavating Pro"ect: Slur Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a . a Z L7: 2 =- 0. six O ._ v or c s- c , ar p t - Sts O .�'Z-a�'..'.u�-.."`�... �r€er,� _ .a* -si.�„.�.;z�. ..& eve.�.,:''`"'�'^' ",t�xs'.w:�c�k`�'"ai�a�sk.�, SILTY SAND & • .r x'. �....E.,q.....a:..��,c� : GRAVEL 76 77 80 82 I S t x x � 1 1 ILTSTONE '8 WEATHERED• , � X " BROWNIRUS84 Y t Y Y I e t 66 Y x i I i SILTSTONE GREY 687 1 224 1 r c 9 y Slli 94 9899 }f A l 1 X 1 I 1 I I } I Y 11 Y l I I e ! Y / 1 1 / ! { 1 1 The strati#`roat on lInes ,represent the approximate boundary lines b tween soil and rock type Ihsl u, the transition may gradual. Water Observations Boring Started' '10-97/20 Initial WL: g! Boring Complete: 1t}I97J2A06 WL:_ . . # 9 Logged By: TM Water Checked: 10/17/06 Two Rivers Testtn., Inc. Approved Bay TMC LOG OF TEST BORE - 4 (Log I of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West. Project No.: 2006-201 Description Depth (tt,) Sample Type p u U3 m gg C u O o el Li03 8 ! o5 Ea 65 c. t// fl 0 co J ..., .. z SILTY SAND WITH GRAVEL i I j . 2 i 3 , I , ' ' SILTY SAND 6 r [ 7 F"e 1 8 I 9 4 Ni a 10 �'b i _ I 11 !! SILTY SAND & GRAVEL WITH " .-. COBBLE GROUNDWATER V 12 i 13 1't n 15 • 16 SILTY SAND — 17 18 19 4 I SILTY SAND & GRAVEL WITH COBBLE 20 :..'� 21 , 22 1F I 23 i 24 , " ;. 25 . 't'lJ' i . Thestratification lines represent the approximate boundary lines between soil and rock types. insitu, the transition may be gradual Water Observations Boring Started: 10/1712006 Initial WL. 11' T.R.T.Boring Complete: 10/1712006 Wi_: 11' Logged By: TM Water Checked I 10/17/06 Two Rivers Testing, inc.. Approved sy, TMC LOG OF TEST BORE - 4 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (tt.) Sample Type r Zo am U) o 2 `°o 3..- 'w 0 Z O _ E v Cr =s Plastic Index % Passing #200 N aa) Cl. c c c n e' to x in ud U SILTY SAND & GRAVEL WITH 26 i.. x •, .-� r y !( COBBLE 27 28 29 30 32 33 34 35 SILTY SAND WITH GRAVEL 36 37 38 - BS 16.7 3:1$ SP x: • :'Sl• r I ! i SILTY SAND & GRAVEL WITH 39 COBBLE 40 41 42 43 SANDY SIL'L'Y CLAY 44 SILTY SAND & GRAVEL WITH COBBLE 45rk 46 47 48 dg 50 he stratification lines represent the approximate boundary lines between soil and rock types.1risitu, the transition may be gradual. Water Observations Boring Started: 10117/2006 Initial WL 11' T.R.T. Boring Complete : 7011712006 WL: 11' logged By: Tivl Water Checked: 14/17106 Two Rivers Testing, Inc. Approved By: rNr LOG OF TEST BORE- 4 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site_ Sec 4 Township 5 North Range 65 West Project No.: 2OO6-2O1 Description0. Cl) om zco a 05 00 2 .1R� -'a xN. a 'N de �` Q) a vi i co ., SILTY SAND & GRAVEL WITH 51 K ...� p r , COBBLE 52 53 54 SANDY SILTY CLAY SILTY SAND & GRAVEL WI! 55 COBBLE' 56 57 59 60 61 62 63 64 SILTY SAND & GRAVEL 65 66 67 ,- SANDY SILTY CLAY SILTY SAND &'GRAVEL 68 69 SILTY SAND & GRAVEL WITH COBBLE 70 71 72 7s 74 75 The stratification lines represent The approximate boundary Ines between soil and rock types. Insitu, the transition rrray be gradual. Water Observations Boring Started: 10/ 712006 Initial WL: 11 T T Boring Complete: 10117/2006 WL: 11' Logged By TM Wa€er Checked: ' 1O117/O6 Two Rivers Testing, Inc. Approved By TIVIC LOG OF TEST BORE - 4 (Log 4 of 4) Client: Dust & Dirt Excavating Project Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 . .. - ... .. "'Cb po CO Q a) _ . . . - - , . - . - • • .------ . . .. . . . .. . .. . Client: Site: LOG OF TEST BORE - 5 (Log 1 of 4) Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West Description SILTY SAND SANDY SILTY CLAY COBBLE The strati;, Water Observations Initial WL: WL Water Checked, 1 10/2 06 Iines represent i p 10 11 12 13 14 15 oximate Pod z O co Project: Project No.: O O. c c C E cc BS ry lines between soil and rock types, T.R.T. Two Rivers Testing, Inc. Slurry Wall Design 2006-201 E z a na n O. C O C LI CU the Transition maybe gradual: oring Started 1012572006 Boring Complete: Logged By: A oroi By, 10/2 /2006 T TMC Lt)G OF TEST B�RE - s ` Log 2 of 4) Cli�nt: Dust& Dirt E3ccavatin Project: Sfur WaU Design Site; Sec 4 Township 5 North Range 65 West Prajec#No.: 2D06-201 c Description Q � � '� x � � �r�° ,� � y v � � o m `E a� � � °. c � .c � z � � o�i _' N ,� � a a� C3 � �' v+ c rn � � v m �3� Z' v �° a c � � c`'�!S � �" q -� = � � i� v] � _ . � F SIL?Y SAND&GRAVEL WiTH 2� . l � � , � ; ; ; • CC)BB�I.E � � ; � � � � � j 27 � � � i � � � � � a � t i i � f i . . � . . i i � � � i.- i i .,� . . 28 � � � i i i � � � i � . i � � -� � �- � �. � . - I i � �� i i i i . . . i i i � . . � � � � � � 29 ' � � � i i i` i i i � 1 �.a 1 .� . . ; . .4 1. � � � A .. ry 1 i � -1� .j f � 1 1 .. . . J� " : .; ! . � . � 1 r ,j . .:j .� . , ; � � .Y. � / .� 1 �/ . . 1 t. ' . 1 1 i �f 1 1 � � � � � J� � t .1 1 f�- � � � � � f � 1 ! 1 .�- i i 1 f i 32 � � � � j � � ; � ' � � � � . . . i.� ;- i i ' .i � i i .i . .. . . . . t. .w�. � i ;� ; � � � � 33 5 i r � � � i i i � � � � � , � w ; � � ^ J1 '�9 � 1 .l / ` � �Y � 1 1 . ��j . . � O,a A j � .� . .. ; �� i ' � +� 1 / 1 �i 1 f� � . 1 . .J5 * � � { 1 �1 1 .� 1 �� / . . . �'? ' j � t 1. . I 1 t / . � ... ��l � j j � � 1 :i 1 1 j i t� . � � . . i i Y `�: ; . . 1� 4 1 ..� 1 �A�- . ' . . ' � . � �� . l 1 � �^ { � . . � i. . � � � 1 !� 1 / ; 1. � r � _ SANLIY SIl7Y CL.AY �� ' i i ' r i ' ; G i . .. � � i � � � 1 � � �� . r . �} 1 1 i � � � . J� ' 1 1 i 1 t � i �. � . j � � �1. 1 . 1 1 � ��_. � . . ao � ; ; � � ; � ; ; t � SlI.TY$AND&GRAVEI.WITH i r i ; i i j � , Cf]BC3L� �� w � i ; � � � , �11 i i i ' ' � + �i � i . t � i i � i i � �{ � . .) 1 ! �.1 A � � -j 1 � q� : r 7 , . i w ; r i � i i ' . . . i f. i j . .� � .�.�. � � i �� . 1 '1 1 i 1 : .�. 1 i . 1 f�. 1 � 1 � 1 � j . 1� . i. �.i .1.� j .'.� 1 I 44 � i i i i i � i � + � � i i i � � i � � r . . �� i ` i :i � - i �� i �i �i . .. � j � i � � i i i i � � �� - � + � � 46 ; ; . � f : ; � , � , ; s ; � , � i �7 ; � � .� � , � � � i I � ; ; � S+ , � ' � . O � �r i � . 1 .. . 1 . �1.. j�. :� � . 4'� �' t r i i i i r i i _ � _ � 1 1 i � � � � :i :i � � i. � 49 • � ' ` � � � � ; i . t i � i�. � � r � } o a i i i � ' i i i i � � � 50 0'�' � i i i � � ' � i' , � . � � .i . � � - .i .� ; . '. .! a�.�� ,i .i � .,y . �... 1 �� , 1 ' .. , �. . . . �� f . . � � ! �. :1 1 �� ; �� .. he�Cr�iiircatron trr��s reAresent:#he aPA�oximaFe bdc�ndary 1in�s belaree�soi!end roCk typ�s.Insitu,tr.e.1�a�s�tion may�5e gradu2l. Water Observations sa��,g sr��te�. �o�2�rzooa initial 1l►IL; 9' � c�rsring Gamplete� �D72�t204� WL: g, 1 .�.�. ..._.... Wat�r Ch�c�c�d: '!�P2a/�35 iQ�9�a�y: zrv� Tuvo Riuers Testrng, lnc. �aa�►oved sy� �r�n� `C G 5.. 1 d ►• _. _ - {'� Cl] '« rCI a r al `" w4 z C>r-ii & (n 444. -- CD co m C7 ro CD 0 z C7 ct T 8i tn al r lit, O —i C7 'O ay C73 CU v v -3 -.„ v v rn as 0) 04 as cn cry, 0 cl, rn u) 0 cn En ° ° 0 u, to t7ePth (ft,) O '' r» err n' co trl It3 R . a , .%,:,,,,,„,:x .....,........;.,.„..,..„,,,,,.,,.„1—y%%, x�.xv 1 R *s' y x . t + 1 re , ...„,......,....,.......„.„4 .., ' > �..s" `ri,„x',,,„aL„„. °„ ... .,... ;y, • .. 4 s s tea; a. 4 444 4 ' 04.,4 •4%i"`r�,:" .4. ' x k ro S' 4 "4e� x �. ,x j' ...N,...4j,•,..., p� x ,M414...4%,04,414 -.4:4.4,4V14.,:,:4....44.,.414.4.4.4.4414.4 4x'44.4 4 -^S . '. O • , s.. i.+, s •..x x,.;t,., , 4 ILx:sax A ig • O �; '''��' . ............xv.^? `�� iss''� ��s�.'14�.is.'�?;s•�4'i;0.s�•�Y';`�.'ry�y"�S��s3i�.`s`' h7s;`R`�,s"`,u�'d's,y�f145�:9. .� caMI 1 Co Gi Sample Type t fi' -r! its SPTt re, p° (BLOWSJFT) ^" (I ---------i �. -- --- - --- - --- - ----- - - --- ---- - - _ - _ Water Content Cr) pzi . (`�) o. o, C CU--t ryry ,. m --•_-_.__.._"------.�.,-_-_-_ --------------_-----_------- ---- _____-. p4..�.-0-/V X n z - x Q� ry Density (pet) 5 t t<s • c' Liquid Lir�Sit 01 O ?,J-___-.. _____�_. _u:--... ___ c t; co _ -- _ ___-__ _________ - Plastic ttiex .a as d tis M 4A % Passing #200 = 0 EL3 03 EU a.� o t ._._._...-.._ ___ ---__-_--_..,-______----»M ..>._-_-_----__;--_.„.-.,__.... _-------___________________ --- --_,.._.-___ - ___ -�_---__-__.�__.,_. ot,Unconfined ii Strength (psi) --4 -� ._----�______,__-_ __ _--- ____-s._____.�____� e' 4gri Cry tO1 o 94,,)/ Swell (Psi) m th USCS/AASHTO LOG OF TEST BORE - 5 (Log 4 of 4) Client: Dust & Dirt Excavatin Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Y a> o a !- es u) ) 1J N � c a V is ^ in G Z O E _, 5 -J v cCA " E. C -a y n. C U 4t n to - e . _ co a Q . D - - SILTY SAND & GRAVEL WITH 76 - i t • COBBLE 78 79 SILTSTONE (WEATHERED= • 278 s r I i• i ,BROWNS 80 81 82 i i R .._____; i 71 ► i I r r r I • t SILTSTONE (GREY) l 91 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 88 i i 126 l ; ! 45 1 1 ( 1. The stratification lines representthe approximate boundary lines between soil and rock types. (nsitu, the transition may be gradue . Water Observations Boring Started: 10/25/2006 Initial WL: r 9r �•1.t� Boring Complete: 10/25/2006 WL! I} �� AT r Logged By: TM Water Checked: I 10/25/06 Iwo Rivers Testing, Inc. Approved By TMC Client: Site: LOG OF TEST BORE fi ( Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West SILTY SAND SILTY SAND $ GRAVEL WITH COBBLE SANDY SILTY CLAY GROUNDWATER SILTY SAND & GRAVEL WITH COBBLE SILTY SAND 8 GRAVEL COBBLE The stratificatrn tines represent t Water Observations initial WL WL Water Checked, j 10 24106 a 3 5 6 7 9 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 a E proximate bpundary 5 15 Project: Project No.: nes between C C 0 oil and rock types T.R.T. Two Rivers Testing, Inc. wog 't of 4 Slurry Wall Design 2006-201 n: -J m C U C N ,e U N .c -- it. t a CO) "r CdC. 77-1 Q V Ito. the transition maybe gradual. Blaring Starte&L 10/24/2006 Bonin omptete 0/2412006 used By. proved:B T LOG OF TEST BORE - 6 (Lag 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) Sample Type SPT-N (BLOWS/FT) Water Content (%) u a n` _ z 71 a if aE.. 85 D .v, to LJSCS/AASiTO . u... we•+eu.,++:« .flwry,% z. .�.., .. ,. -„`v. tL'r..a.e=':.i�..x.._z.:...'...,v..-. `...�.m-...ui.e _.3wr ti.-�tt�ir.. r . ..i.i..,, r_d'J:�lu...:.>.•vdk•_` SILTY SAND & GRAVEL WITH 26 > I 1 COBBLE 27 �b�Lc• 1 l 28 29 30 • r.; 31 32 33 '� r 34 35 36 SILTY SAND & GRAVEL 37 38' 'SILTY SAND & GRAVEL WITH 39 40 COBBLE 4 ft��wlJ f 42 .'7. 43 453'` 46 4748 ra er ! t '! rrr2 r' • 1 i 1 49 *.� t 50 ; 'r The stratification lines represent the approximate be undary lanes between soil and rock types_ Insitu, the transition may be gradual Water Observations boring Started- 10124/2006 Initial WL: 15 Boling Complete: 10/2412006 WL: 15 gged By: TM Water Checked: 10/24/06 Two Rivers Testin , Inc,, Approved 8y TMC LOG OF TEST BORE - 6 (Log 3 of 4) Cilent: Dust & Dirt Excavating Project: Slurry Wall Design Site. Sec 4 Township 5 North Range West Project No.: 2006-201 Description a, a tY4. g i- m z ? .' O _ X tv f fa G SILTY SAND & GRAVEL WITH K�k °� �" + Y ( I ! t 1 1 f 1 I A t i rI COBBLB � 53 SILTY SAND & GRAVEL 57 58 SANDY SILTY CLAY 60 SILTY SAND & GRAVEL WITH x ire { 1 I i I w I { 1 I j x I r I COBBLE 6i 6 GA 64 SILTY SAND 68 r a SILTY SAND & GRAVEL WITH ;; ; I i I I I I I 1 r 1 I COBBLEx SANDY SILTY CLAYc..�.. SILTY SAND & GRAVEL WITH COBBLE 73 74 75 i 1ostion tln s epresent the pp xi e'bound aEyInes bet4ween soli and r d types. In 'flu the Iran itI n may be gradua z. Water Observations Boring Started: 10/24/2006 init'lal W 15' Boring Corn # . 10/ /2t7 5 Water Check i; ( 10124106' Two Rivers Testing, Inc. Approved Ely T LOG OF TEST BORE - 6 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a Sample Type SPT-N (BLOWS/FT) - w u a :.1 x a o 71. a° yi. L �..cr min co SILTY SAND & GRAVEL WITH 7g ti.n; x s ''':::.;•''' x., r .ri., . ° l � i [ ± 1 COBBLE 78 79 et 82 83 ' 84 SILTSTONE (WEATHERED. BROWN/RUST} 89 SILTSTONEjGREY1 BS 1 20. T [ 90 91 92 94 95.. 9s 9 .. 9> 99 100 1 88 t 1 t f 1 74 1 89 1 1 i 1 6g,; r ! 1 t[ t i [ t i 1 1 1 [ 1 1 ; , ; The stratification lines represent the approximate boundary fines between soil and rock types, Insitu, the transition maybe gradual. Water Observations T.R.T.Boring Two Rivers Testing, Inc. Boring Slatted: 1012412006 Initial WL: 15' Complete• 10124/2006 WL: l5' Logged' By: TM Water Checked: { 10/24/06 Approved By. TMC LOG OF TEST BORE - 7 (Log '1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description =IA gQ¢�7 a - sa g to F:. g Q_ u) C.13, a C (-3. Q t Dry Density (pct) Liquid Limit v U d 0.. 0 a. vcsi ii C 01 N D o) c co USCS/MSHIO 0 SILTY SAND WITH GRAVEL :: i 1 2 , i 4 5 6 SILTY SAND & GRAVEL WITH - COBBLE 8 r r 10 .i r 12 * l r 1 `( " ; SANDY SILTY CLAY 13 I i 14 ' SILTY SAND & GRAVEL WITH COBBLE 15 ... 16 Groundwater 17 Q 18.::Y: 19 20 21 22 23 .. _ t 24'�'d 25 r I. The stratification lines' represent the approximate boundary lines between soil and rook types Insitu, the transition may be gradual Water Observations Boring Started: 10/24/2006 Initial Wt..: 17` T 1Z.. 1T Boring Complete: 10124/2006 WI,: 17' . Two Rivers Testing, . g Inca Logged By TM Water Checked: 1 10/24/06 Approved By TMI, LOG OF TEST BORE - 7 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a u1 Water Content (%) ca eL a ._ a. % F'assilyg #200 Unconfined Strength (psf) rn O a 6 SILTY SAND & GRAVEL WITH ` f COBBLE 4ee Mr SILTY SAND & GRAVEL 27 a' - r 28 29 30 SANDY SILTY CLAY 31 32 r tip*f� R } . SILTY SAND & GRAVEL WITH COBBLE 34 35 ,a rY t; 36 37 x t r tv 38 M� ( 39 •'�'�; 40Y"� yr= 41 tyw }y rl 42 43 44 2rc,,, 45 SANDY SILTY CLAY 46 47 } i SILTY SAND & GRAVEL WITH COBBLE 48 49: 50 ai y. 1 The stratitcation lines represent the approximate boundary lines between soil and rock types. Insitu. the transition may be graduat. Water Observations Boring Started: 1O12412O06 Initial WL: l7' T. R. T Boring Complete: 1012412008 WL: 17 . Logged By: Tiir: Water Checked: 10/24/06 Two Rivers Testing, Inc; Approved By: TM LOG OF TEST BORE - 7 (Log 3 of Client: Dust & Dirt Excavating Project: Sittrr)/ Wall Design Site: Sec 4 Township 5 North Range 65 West Project No_: 2006.201 Description a ry 0. SAND & GRAVEL WIT Ji x1 w �' i s L - i , 7 COBBLE I I I E I , 1 3 r I 1 1 I I tl 1 t SANDY SILTY CLAY 58I �✓9 r I t A t A t t , SILTY SAND & GRAVEL WITH 4 COBBLE'' fi 62 i A I I AA M + I I 1 1 it SANDY SILTY CLAY 63 64 ,65 & 7 + I r I 1 t + + r + I I I a i i I i _ T I I SILTY SAN-? & GRAVEL WITH COBBLE 66 r I t I I 70 71 pp 72 74•75 r,o 1 1 / 1 t. R rI A i a 1 I I . I A I t + I i A I I I r i I t The yra;if at on Tines represent the appro -mate boundary lines between of and rock types.1 situ, the,transition may be gradual. filaterObSevations Burl Stailed^ ^1r312412Cfd6 Initial \A/ 7" T.R.T. Boring Comptete': 10/2412006 WL. 17'Logged By; TM Water .Checkers; ( 10/24/06 Two Rivers Testing, Inc_ APO.OV air: 1 MG LOG OF TEST BORE - 7 (Log 4 of 4) Client: Dust Dirt Excavating. Project: Slurry Wail Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description e ' a rf c z3 ip a - y? V 0 2 LT C o Cst s rte° - u c m fir) fl: v o ;.�..-, ..^^,ar-s..r^^�'�r,a:. SILTSTONEICLAYSTONE 76 i i i i a t (WEATHERED-BROWNZ 77 t StLTSTONE/CLAYSTONE (GREY 63 78 79 =S ; ? i8.0 t 33f 16 SC_9�` CLiA-6 80 83 84 86 86 8 87 89 0 91 92 93 94 7 9 t e 1 1 1 t t t } I t I a t 1 a t t t t s Y Y 1 3 t a 1 f t t r t r r I t t a t j-1 11 l a a Y r t t 1 c I a t t Y l h t l i i t i t r 1 4 1 1 r M Y t h� Stratification tines represent the spproxirnate boundary tines between soil and rock i pes. lrnsja, ensnshian may be gradual Wafer observations Boring Stetted: 7012412016 Initial WI : 1%' Baring Complete' 10 2 41200 1NL.' 7 7" Logged By: Ttut Wafer Checked: J °10/24/06 Two Rivers Testing, inc. Approved By' TMC LOG OF TEST BORE - 8 (Log 1 of 4) Client: - Dust,& Dirt Excavating Protect: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) 0 ..,. ' '..�:.. ._e..w, ,.,y - .3W"'.. �,. t Y"_'�v.=:JdS;aUu:�;t�iCr..� _« k," f`< SILTY SAND WITH GRAVEL fl _ ,..y.�. ..+,8:�;..�c�4�.,-� •..-0mr.�. :a "w w:'.r. 1 } ` ! } 1 1{ 1y j SILTY SAND r i / SILTY SAND & GRAVEL WITH • COBBLE '� S � � 1 1 SILTY SAND �at fi r` a i i i i t I 1 t 1 I S11 TY SAND & GRAVEL WITH, COBBLE 12 r } Cif¢CInWdtf'f 13 14 16 ry 20 23 24 �} .,- rsl"�w e1 as r �y- Lrtf 1 i I .i I ` SANDY SILTY CLAY } The Slralilrcat sin IEnes represent the aA rox[mate beundes between so I aM r edc t s. Insrtu, the trarr5€lion may ae gradual; Water Observations Two Rivers .6 Testing, Inc. Boeing Started: 10/23/2006 Init181 WL: 't3' Bonng Co nplele. 10/23/200 WL: 131 Logged B : TM Water Checked: 10123/0 Appr +led y. 7MC LOG OF TEST BORE - 8 Log 2 of 4) Client: Dust & Dirt Excavatin• Project: Slur Wall Desi+n Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Q I- as C. ft in SPT-N (t3LOVVS/F7) Water Content w Qy G' - Q ,� - J C t3 7/1 e2. C # c in N {�.. o+ V v ...... = m - C41 7 Ug USCS/AASI-ITO SANDYSILTY CLAY 2ti e'S r r � f�se2 t1 { i w , A i , i I A I '.. EE i I I A J ' I I 1 27 28 SILTY SAND & GRAVEL WITH COBBLE 29};x. 30 311L SANDY SILTY CLAY 32 33 34 33 SILTY SAND & GRAVEL WITH COBBLE 36 37 3+a 39 40 41 42 43 44f6 45 46 47 n8 bg SANDY SILTY CLAY 50 The stratification lines represent the approximate boundary lines between soil and rock types. InsRu, the transition may be gradual. Water Observations Two Rivers . TT Testin•, Inc. Boring Started. 102312006 Initial WL;- 13' Boring Complete' 10/23/200 WL: 13 Logged By TM Water Checked. 10/23/06 Approved By: ,' TivtG LOG OF TEST BORE- 8 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description --- *� a 'vt ii liii co m�'4.v...2.e...`=iwd34rt"..L's'S'r1...eeHn�^''�.i �}" "•-i}i'.vs+»"'sT.�tlk^^e, n £'^tP. :t".°y�... "F`° - d�e '. 'di-w'aw.� P,^+ SILTY SAND t€ GRAVEL IT 51 ..o,s{. a'S.a7._+kTb'1.ri.e:u COBBLE l 52 9 _ • �'- JriiV F. T A [ ! 1 8 r SILTY SAND & GRAVEL SANDY SILTY CLAY BS ; 31.0 ; ti 39 ' 21 1 97.5 R ' 20 , CLIA-6 SILTY SAND ' {_ I 4 � 4 A 6tiiw S7rx� 68 i I l 1 r j n1 1 i i I 1 i i I i i 1 SILTY SAND & GRAVEL WITH 9 , COBBLE 71 72 F 1 1 I 4 i i I SANDY SILTY CLAY F 74 t I t r r ! SILTY S & GRAVEL WIT �--',74,i I I I I i WOBBLE$ 1 4 r4 yy The-si tlilcatiorl lines repnt 2h ppratom ate tyoundary tines between soil and roc≥ types. tnatt,u, the Irensitiasn may artual. W to Observations Two Rivers Testing, Inc. ortng Started_ 1,0/23t20t ;nits! WI. i 3' 80ring Complete, 10/23/2006 Wt.; 13` Logged By TM Water Checked: I, 10/23/06 App toveday- TMc LOG OF TEST BORE - 8 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft,) ¢ T irr ': (Jo O .(n rc'. Water Content (%) Dry Density (poi) cr a x re a % Passing *200 Uncanfrned [Strength (psi)' v 0 In ¢ U SILTY SAND & GRAVEL WITH ' 76 £ 1 I8 4 i 1 i 1 i 4 I I I I ; I i i I t I 1 I I. I. :� I I COBBLE StLTSTONE (GREY) 77 78 80 . pp,I 82 83 84 85 . p 87 88 9 i7 92 94 95 : 7 100 T ky^�I I r�.sJ I 1 I i i i i 1 j I I I I I I 1 c(� r. 1 I 94 1 I k , 1 / r i x r t' i I 1' I4 I A ' '.1 I I 1148 I i i IL I z I I I ; l t ; 1 k' - I / I 90 ; , I k , I 1 1 1 125 1 A I; I I I iIk? I I I I 1 I I I i I f 1 I t I_; I 1 i ; .. _ e 1 I. I I i 1 I I 1 1 I t I I , I k I I I I I 1 I I I ! I ,' I I I: ��: � + I 1 A 1 I I I k i I I A I i i t i t / 1 1 1 I. I, , / ! I f 1 I I I . I II '. d I I I I I - I )I) I I I i The 'stratification tines represent the approximate boundary lines between soil and rook types. tnsttu, the transition may be gradual Water Observations Boring Started: '10/23)2{1066 Initial WL 13' Baring Complete; 10/23/2006 WL. 13' Logged ay: TM Water Checked: I 10/23/06 Two Rivers Testing, Inc. Approved By; VAC Ii OB LE Dust LOG OF TEST BORE - 9 (Log 1 of 4) in Excavating ec 4 Township 5 North Range 6 GROUNDWATER SANDY SILTY CLAY SILTY SAND & GRAVEL WITH COBBLE' West Project: ISlurry Wail Design Project No.: 12006-201 �terr y i ,r s s 1 a : The strati tllines rear ent the aopre boundary h rar s bet en soil and rock types. lrisrtu, the tr nsfti n may be 0radu Water Observations `("' �I �'�'"� orin t led: nitialVVL: 15' ,1..1\...1 .. reorr� cerrptste. WL 15, Logged By: Water Checked: 10/24/06 Two E ivers Testing, inc. AI prayed y, a � > .. v a) a, a... r C, '"":.....Trix.,,,:,..,1CJ D O -I17 SU rn fii = rl x 1. X. r. .: ,r. .4.. 4- .r - .4.. -r..4. w s r w w 0 0 w w CO w 144� l',) na n,a Depth (ft: Q a A to -`� cri to A n1 c� <q tc -.t a) v,.p . . ;w ns c4 to oa 0or �,, �{i,,j, r ,Kai y +x 'k^ r .4 �A.7L�L' .. 5 hF° 'M.d '55 `� ro`�'�v } `4' - a , � vai I 4 12 ' Sample Type O _ q O1 -TI ti SPT-N S f'I _ __ (BLOWS/FT) r. (1i t# y a, Water Content b 'fl Qj .O t) (%) tC o' O 0 ..___•_-_x _-_ +fit .+ to M • Dry Density (pcI) CD Liquid Limit to 44 Plastic index ° fol �" to ro a w as % Passing #200 so ro cv Unconfined Strength (psf) I cs LSwell. (pSO USCSI tSI-ITO , t. LOG OF TEST BORE -9(Log 3of4) Client: Dust & Dirt xcavating Project: Slurry Wall Design Site: Sac 4 Township 5 North Range 65 West Project No.: 2006-201 Description Lt, c n .0 8 SILTY SAND & GRAVEL WITH 53� ! �, �IS-� I: i Si 1 X I L I I 1 Y 1 1 F 1 , J i t j 1 ; j y Ji1 '1 111 COBBLE 5 2 4 57 SANDY SILTY SLAY 56 SLLTYSAND & GRAVEL G5 SILTY SANDY CLAY66 SILTY SANbn SILTY SAND & GRAVEL WITH 69 rCOBBL p ie SILTY SAND & GI AyEL 74 SIL Y SAND & GRAVEL WITH COBBLE. The IraIific tan lines represent the ap e bour a lines between soft and rock t pes. In II the transition rna be g; adua . Wabervations Wiring warted; 0124 0ba IttitIei WL: 15' T Soring Cemp e : l0 24/20 6 Wt.:" Logged By. ' Tti! Wa#er checked. 1 t}I 4/06 Two Rivers Testing, Inc. Approved By TMC Chen Site: .OG OF TEST BORE - 9 (Log 4 of 4) Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West ILTSTONE4WEATHER SILTSTONE4GR tt�e stratEfirat n tined represen Project: roject No.: Slurry Wall Design 2006.201 PP`mat e:bounriary lines between 5o ! and rock types. tnsitu, the :ir3rtsiiion maybe Gradual ltral WL: 13' L: '13' later Cnecked: 10/23/06 .i» �o Rivers Testing, Inc. Clieni ite:. LOG OF TEST BORE 10 (L.og 1 o Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West SILTY SAND & GRAVEL WITH SILTY SAND Project: Project No.: 0 cs furry Wall Design 2006-201 The represent the approximate boundary lines between soil and rock 1y e5. lnsLI, the If ' may be gredu< Initi W Water checked: er Obsery Lion L 1O6 8. R. T. Two Rivers Testing, Inc.; sed: pprave� V Y7 TMC LOG OF TEST BORE -10 (Log 2 of 4) Client; Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range .65 West Project No.: 2(106-201 Description Z t}' N '1. JC a c .7. PI SILTY sAND & GRAVEL WITH 26 J J J 1 f 1 { t 1 1 J f ! p r 1 f l K 1 l 1 ccaeLY= za 28 3t +y SANDY SILTY CLAY 37SILTY SAND & GRAVEL WIT .a`•r��^ tt S�,,k�J 'Y.,[=vy-.:• t ...0. i f Y1 I r 1 � i J i. - Y 1 J a Y i 1 ( 9 t 1 J A r I , COBBLE 41 42 4612£' -- -. -. - 47 4t 49 The trzz- atiti tton tines represen tie apprcxima1e'bouns Water Observations er Imes between soil and rock types, thsttu,.1he`transition may be, rad Boring Started: t0t25/2006 Initial WL: ' 8.5T R rr Boring Complete. /0/2512006 ,111 t: 8 ' Logged By, TM Water Checked' 10/25/080 Two Rivers Testing, Inc. Approved By TMC LOG OF TEST BORE -10 (Log 3 of 4) Client: Dust & Dirt Excavating Projects Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description. L3 C3 E Cn Pa ' 59.. 4di3 .o0 �j -+ ? L1„ G! ccii LL o CV # C Ci' * 4.4 CAS • G G CiJ, r,. 0 !!i USCS/V4 HTO' SILTY SAND & GRAVEL 1MITFi'1 . F . 1 1 1 r 1 1 f 1 1 1 ! 1 1!! 1 f t ! f 1 # 1 / 1 1 1 f t 1 d 1 p i 1 1 ' . COBBLE 55 JT SANDY SILTY CLAY SILTY SAND E V 5 68 6� 70 71 ?2 73 The .strattftcatian ties represent the ap +rbxfmate-boundary lines between soitand rock,lype . Insltu, tnet (ion may be gradual Water Observations Boring Startad. act/25/2006 k ' Inttf ! WL: 8,5' � Baring Complete: 101'251 Dq WI.: 8.5# Lagged By: TM Water Checked: I 10/25/06 Iwo Rivers Testing, Inc. Approved By; TMC LOG OF TEST BORE -10 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a - cz O 1; o 4 fl e r^! — vi Fn wt '`vc"`.�:.'u.w»"iLr w�uSC.,'e-ww�,"�Si+. "'i'.r—v ,. r_..a"*scy.J ..'5%':�1'"i. r ".'+;C. ,; dcd -=r n a..,.,.. Wt s-sv✓Sj .',��S'�M1`y ''I': s ., ... SILTY SAND 76 {.. • ✓✓ i"Ftrj, 5 t 1 1 I t 1 1 I 1(11 1 1 I 1 l 4- D t r 1 1 1 y I ry d ! fl SILTSTONE (WEATHERED- i3ROWN/RUSTt 82 ,r--- 8 74�1q F l! I I 1 i ; i :i I 1 . . 1 SILT TONE (GREYt 85 86 87 90 sa 95 96 $7 100 f 92 -___! � j I i 75 i 1 1001 I 1 56 I ! t r i I i t 1 1 1 1 1 S , t I 1 11 I 1 } 1 1 1 1 7 1 1 i 1 A { 11 1 1 I 1 1 1 1 I 1 t 1 1 1 1- t he stti. cation sines represent the approximate bout nary tines between soil and rc types: frnsttu, the" rarrsition may be ar;�du I. al ter Observations �i 1" .11. Two Rivers Testing, . Inc. wring St i; 10/25/200 6 ' Initial WL: 8.5' Boring 0vrttplete 10/25/200 L: 8 5�Logged By', TM Water Checked; ( 10125106 Approved sy: TMC LOG OF TEST BORE -11 (Log I of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description 43 E. -S2 (0 ,= - 2.S 0 102. 0 t. 'a N 0 :E c) ii o C N a$ . - C as V �' : ≤n cco Q. rn O z 0 D .s LTY SISAND WITH GRAVEL 0 _ - 1 1 2 3 SIf�TY SAND 4 1 � z L., a r erg •, :'�.'�`= • f•: ti•. ..:K..E:...: •�" N :. . •. k r% :IVtfrjf : , ! 1 , t 1 " 1 1 1 1 " ` a (SILTY SAND & GRAVEL WITH8 COBBLE 9 10 GROUNDWATER v 11 12 14 15 16 18 .. GRAVEL WITH COBBLE 20 21 .",.Mee 22 I.{ 23 24 .4 25 The stratification lines represent 1e approximate. boundary lines between soil and rock types insitu, the transition may be gradual: mommiumm,Water Observations - Boring Started' 10/16/2006 Initial WL: 2 #' T Boring Complete; 10/16/2006 WL: 11' • Logged By: TM Water Checked; ] 10/16106 Two Rivers Testing, Inc. Approved By: TMC LOG OF TEST BORE -11 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) Cl. ID p I: C 0 u ililili USCSJAASHTO 26 27MR 28 2s .r 30 31 32 33 34 35 36 37 38 39 40 41k�e� 42 43 44 45 46 47 a8 SO GRAVEL WITH COBBLE � *.% . ye M.•.x. r kl ;.: ..:r: " . % �9 � 'a 'G 4 ; ' � 1 I f 1 s l r a r 1 E S 1 i - . SILTY SAND & GRAVEL WITH COBBLE SANDY SILAY TY CL SILTY SAND 8 GRAVEL The stratification lines represenapproximate°ttaundary lines between soil and rock types. Insitu, the trans(tion may be gradual. Water Observations + Two Rivers r Testing, ♦ T r Inc. Boring Started: 10117/2006 Initial WL: 11' Boring Complete: 10117/2006 WI; 11' L gg By: TM Water Checked; f +0 7/06 Approved Sy 1 me LOO OF TEST BORE -11 (Log 3 of 4) Client: Dust & Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft) o. F.� G R Co P cc. -. Z 3 �a_�, :a co 4 ca C U %� 3 _ ^N N z a C - a. c u m ii C ,cco a o c c co 0 a Q. cn co �!'. S�f 0 r.:.----------1-7.-7 ----'-'772-'-"",3....-,... �.., --------7-'7-"'"--17-.. .....r °. � ��-m'—'-'-'-'--777'. - ,fie .. ' ,_ SILTY SAND GRAVEL 51 52 53 55 {_ 56 - t 1 57 ""_ 58 - - t 59 _ 60- 1 61 62 t t � , , 63 SANDYSILTY CLAY 64 SILTY 1 SAND 65 ♦M .S 66 s uj 57 � Y 1 68 70 71 i t SANDY SILTY CLAY }} + 72 74 ' r Y Y i i 75 i The sirattiication lines represent the approximate boundary tines between soil and rock types. lrrsitu, the irarlsit ton maybe r3dua, Water Ob5erVations Boring Started.: 10117/2005 Initial WL: 11' Boring Complete: 10/17/2006 WL: 11 Logged By: TA>i Water Checked: I 10117/06 Two Rivers Testing, Inc. Approved By' TR1C LOG OF TEST BORE -11 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) c 417 rn S Z 05 o 0 0 g c-- ,., Q = o J tr J U o % Passing #200 = .C '.- rd {� USCS/AASHTO SILTY SAND 76 i i a SILTY SAND & GRAVELWITH COBBLE 77 78 79 81 82 83 84 85 a f SI L TSTON EJCLAYSTON E- (WEATHERED-BROWN/RUSTZ 86 SILTSTONE/CLAYSTONE {GREY] BS 17A 30 11 86.1 CL/A-6 87 ::....................80 90 91 92 93 94 95 96 97 99 99 100 106 ; t 60 , ( + ; 140 I + 1 73 + The stratification lines represent the approximate boundary lines between soil and rock types insitu, the transition may be gradual. Water Observations T Two T 111 ' Rivers Testing, Inc. Boring started 10/1712006 Initial WL: 11' Boring Complete: 10/17/2006 WL: 41' t paged By: TPtt Water Checked: 1 10117/06 Approved By: INC LOG OF TEST BORE -12 (Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site; Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description CS r r1} tom ."v 71 0 :j Plastic Index % Passing #2O m td z.-:—.===.....__1...= '""``` r. .... ,rte`:"" .- -_. L.. ..,, ;. S.-."'-''T"r....evfiS'. -<.;R•.*-7'="""'ya,1:-'.wi �" -..'see-,•4t. rtt SILTY SAND WITH GRAVEL U t , Z 2 3 CLAYEY SILTY SAND SILTY, SAND >� BS i I 3.1 0,57; GP SILTY SAND & GRAVEL WITH ear w+ rr #7,_1".:, ,. •': Ar el 0 . + i , COBBLE 10 11 12 13 tat 15 GROUNDWATER 17 1B :+Syys� 2Lrt"""rt"tJ. 21 22 23 •Ct�-.- 2 The stratification fines represent the approximate boundary lines between soil and rock types insitu, the transition may be gradual. Water Observations I? ' J' Two Rivers Testing, Inc. Boring Started: 10116/2008 Initial WL: "17' Boring Complete: 10116/2006 Logged By: TM Water Checked: 10/16/06 Approved By: TMC IIIIIMINIMIIIIMMINOMW LOG OF TEST BORE -12 (2 of 4) Client: Dust Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.; 2006-201 Description r o D c n to �t z .S O a N 2 R -7f, Dry Density (put) Q x o _a iL c c O a y c c Jv z v) 3 en Q �. SILTY SAND GRAVEL WITH 26 COBBLES 2T 2$ 29 SILTY SAND WITH GRAVEL 30 31 32 33 34 35 36 37 38 __ 39 40 41 42 43 44 45 - - -= 46 # E t SANDY SILTY CLAY 47 48 SILTY SAND & GRAVEL WITH 49 COBBLE 50.'� The strati cat can lines represent the approxirnate bndar lines between soli and rock types lnsitu. the transition may be $radua3 Water Observations r� Boring Started: 10/16!2006 Initial WL 17 T R T Boring Complete: 10/1612006 WL: 17' Logged By: Ttvt Water Checked: 10/16/06 Two Rivers Testing, Inc. Approved By: Ttv1C LOG OF TEST BORE -12 (Lr g 3 of 4) Client: Site: Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West Description 773: - SILTY SAND & GRAVEL WITH COBBLE SILTY SAN COBBLE SILTSTONEICLAYSTONE (1NEATHEREDJ SILTSTONE (GREY) he slrati5 ep Water Observations Initial WL: WI; Water Che a a 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 88 69 70 7 72 73 74 75 a 2 m co Project: Project No.: a 4 he eppraximate boundary lines between soil and rock I 17' 17' Iced. J 10/16/06 T.R.T. oring Started: 10/16)2006 Two Rivers Testing,, Inc. Slurry Wall Design 2006-201 U 0.. C o c min nsitu, the transition may be gradual. Boring Complete L d ey 10/16/2006 TM Approved Br TMC LOG OF TEST BORE -12 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (t.) c II m rr'i 2 20 rn (3 y c U g v u g 0 _ g a K C u R 4 O >= to * , v v n �' E rn c to a. co i 0 0 U SILTSTONE'lGREY1 76 I . ; i • ; I 77 78 79 80 , 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 124 i I . w a I I I , I ; - t , I r , 91 I 's I i I ! I , I { 1 I , The stratification lines represent the approximate boundary lines between soil and rook types, lnsitu, the transition may be gradua. Water Observations vi r�- T1?. 1 1 ' Two Rivers Testing, Inc. Bann Started: 1011612008 " Initial WL: 17' Boring Complete: 10/16/2046 WL: 17' Logged By TM Water Checked: I 10/16/06 Approved By: TMC LOG OF TEST BORE - 13 (Log 1 of 4) Client: lust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description .-.. rte} Sample Type . o U ro " a To �^ J V P x ti V '�. 0 *t g. .to a. ap,"..7:-.s.a;�a.r...7-7:7_::=-.-1.4,-1,274.... 413 C t C to 0 E N - Q 1 rn _ , 0 SILTY SAND WITH GRAVEL ^:1T "..:' "T -^X.r'^"-c - '1{ . 1 r t + 4 t i 1 3 SILTY SAND & GRAVEL WITH I rrti'' ?Az t ;,,, r.: tr tin Fte., t''aTr: .t � 'R 4. rrF i'e2� %r •�rrt r A '4l �1�ILrMf. .el, 2" f rc } ens•>�r,,,rt� #;��... r y. rA , I t t r ' M - r r J i i.. 1 COBBLE , SANDY &ILTY CLAY SILTY SAND& GRAVEL� WITH S COBBLE GROUNDWATER ] Sy 12 14a 5 16 17 O 1 19 20 212 23 24 25 ,'. he stratification linas represent the approximate boundary lines between soil and rock types, lnsitu, the transition may be gradual, Water Observations Two Rivers • Testing, Inc Bring Staged: 10/17/2006 Initial Vi1L. 9' goring Complete: 10/17/2006 WI..: 9T.R.T. Logged By TM Water Checked: [ 10/17/06 Approved By: TMC LOG OFTESTBORE-13(Log2of4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) 21 t C/) u.. {{N z 7 49 U) m g C? m —z. e. a - t.,8 a . e C3 CI C --.,E. J a :.i VI L) m a. + CO ,� n C e C/' d ,.e't-, >: t 8 $ V) C .... a (f! QQ .. CO u -7---"'"' k... a-. 1?... s.ns-.✓.4rs.-.+=.,..w.cr�..... ..�' SILTY SAND & GRAVEL WITH —,-1,-,---'---'W. k�.w r"r` tar k ; k: .lr ; ;. x�_ �r `fir .rtp. ti r rtitr .. Y '''' sad ,? . F R • • 'Z " • . , /1 r { i { t { 1 ++ j i i y � 1 1 COBBLE 27 28 29 3Q 31 32 33 34 35'k°� 36 37 3$.�' 39 40 41 42 43 44 45 46 - ,SANDY SILTY CLAY 48 49 SILTY SAND & GRAVEL WITH COBBLE 50 ..: '4t a. The stratification [Ines represent the approximate bo indarylines between sod and rock types, Institu, the transition may be gradual. Water Observations b T. Two Rivers Testing, Inc. Boring Started: 10/1712006 Initial WL: 9' Boring Complete- 10/17/2006 WL: g..l\. Logged By: TM Water Checked: 1 10/17/06 Approved By- TMIC LOG OF TEST BORE -13 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Cr °�' O z a QCO ci E J 5R xrst c SID U vY d= 13 4 C CO = N a to t!� O St SILTY SAND & GRAVEL WITH COBBLE ' t 52,,: 53 54 55 56 57 ::- ,,V,I: x,ti. SANDY SILTYCLAY 60 61 62 , f 1 SILTY SAND & GRAVEL WITH 53 a,.,:' COBBLE c:* 65 66 68 69 ,r�wt� 70 71 72 .r'. 73 74 e?•�l--sir} �5 }; e,! �r ,,.�� wY?�wwed e' .el � i The stratification lines represent the approximate bOundary lines between soil and rock types_ Insitu, the transition may be gradual. Water Observations Boring Started; Initial WL: 10/17/2006 9' T J T Boring Complete, Wl..: >, 10/17/2006 9a Logged By; TM Water Checked' 10/17106 Two Rivers Testin , inc. Approved B ; Ttvl LOG OF TEST BORE -13 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) a to 0 __ a i t rz a 2-,3 x .� o ,n U3 N 5 C 671 a a _ j SILTY SAND & GRAVEL WITH 76 { rr" x ."'... ~r� i COBBLE 77 78 79 80 81 82 83 SILTSTONE WEATHERED- 84 ` t ORANGE/RUST) 85 SILTSTONE (GREY) 86 87 88 89 90 91 - 92 93 94 95 96 ^J 1r t 116 I t i96 112 58 98 7197 t i ! 101 99 100 7 ! i t The stratification lines represent the approximate boundary between ser1 and rock types. tr situ, the transition may begraduai. Water Observations T.R,T. Two Rivers Testing, Inc. Boring Started: 10/17/2006 Initial Wt_: 9' Boring Complete: /011712006 WL: Logged By; TM Water Checked: 10117106 Approved By: TMC LOG OF TEST BORE - ' 4 (Log 1' of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 ... .... . , . . . ... , . .. . • , ' LOG OF TEST BORE - 14 (Log 2 of 5) Client: Site: Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West Description d SILTY SAND & GRAVEL WITH COBBLE SILTY SAND WITH GRAVEL GROUNDWATER SILTY SAND & GRAVEL WITH COBBLE Project: Project No.: a C C O g a N 0 Slurry Wall Design 2006-201 i he stratification Imes represent the approximate boundary lines between soil and rock t ypes. lnsltu, the transition may be gradual, Water Observations Initial WL WL: 4O' 40' Water Checked: J 10/23/06 T.R.T. Two Rivers Testing, Inc. Boring Starlet Boring Complete: 10,23/2006 togged By, Approved By 10/23/2006 TM TMG LOG OF TEST BORE - 14 (Log 3 of 5 Client: Dust & :Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201' Description o Sample Type SPT-N (BLOWS FT) as O 0 u a 3s — o M s n„'T SILrY SA NI?$ GRAVEL WITH 7' '. 8+ p r •F ' ! sr•.,�-y afi ��'42ry r V" iF �' i • qr y Y 4 1 A 4 1 171 f 1 t 1 A 1 i 4 l 1 1 C 4 tt b 1 1 I ' 1 J 1 1 1 1 1 1 4 f i 11 r P d 4 1 ! f I I i 7 1 4 3 4 1 4 I 4 4 1 I 1 � L 1 ! t I I f 4 Y I. I COBBLE 2 5 :vJVr�>' 57 �� -. - aasa SANDY SSrLTY CLAY SIL.TYSA!'*t[a 8 GRAVEL WITH COBBLE- 0 70 72 75 The xrr t flcat`san lines represent the approximate boundary l rtes between so'si and rock types Insitu, the transition may begradu3t. Wafer Observations 1 Sorir Started: 90123/2006 Initial WL: 40' Bonng Complete: t[I12 2 06 WL: J40' Logged t3y TM Water Checked: ( 10123/06 Two RIvs Testlnjl Inc. Approved By: TMC LOG OF TEST BORE 14 (Log 4 of 5) Client: Dust Dirt Excavating Project: Slurry Wall Design Site. Sec 4 Township 5 North Range $5 West Project No.: 2006-201 Description ❑epth (ft.) ea. o 0 n is o C:. ci 0.- -- c" vei SANDY SILT' CLAY 76 i r 77 8 Y i 1 1 t i rl i rr i' { SILTY SAND & GRAVEL WITH 79 fCQBBLE - 9 80 a� SANDY SILTY'C " 82 SILTY SAND & GRAVEL $3 r / 1 84 7 r t s 7 7 I t SILTY SAND & GRAVEL WITH i. �. COBBLE 90.,0„..± t r t r e - By!.� e 1 I 1 1 7 4.. t• Y 1 1 i 1 7 a*xir i, 11 i i i •i w � �rz The stratrOcatan Ii iesr riresen the approximate houII e sod artd rock: types,. InsitIt, the transition niay be raduaf Water 0 s ations ; Started: 1Ot2 /2096 Initial T tiring W 401 Boring Complete � r WL: 1 a, as 40' Logged Sy TM Water Checked: 10/23/06 Two Rivers Testing, Inc. 9 Rpravy T LU►� �� TEST BC)R.E - 14 {L�►g ,� �f 5 �li�rtt: D�st&t}�rt Excavating Proj�ct: Slu� Wait Cfesign Site, S�4 Township,5 IVvrth Range 651t1t+�st Project No„ 20Q6-201 � a � Descr�ptia� c � � � *� � � � � ?� � � „-. � � �c � � � a, � a. � � �a � � � �� U �y�j �.. L Q�.. � iC L� � �y '� � 6 �c-+ Q" � it � �. � �. �� S�.�` G] =`S }� � � f11 f!? � SILTY.S'CtNtll'&GRA1I�i.WITH i137 � � � 4 � � i � t, � � CC1�38LE ; � i i i � � ; _ - � i i � r i � r _ " � � �� . �i. i i �:: �.. � �E �� ; ;' , � , � ,� ; � � $�LMDY SIlT1l'C1.10.Y ' ��-'' ' � S a i i i i i i . . . .. ; � � . � . I 1 1:. f� 1. 1:.. _ . . . i. � A � ... j. . 1 1:� f: � . 10a ' j { � ; � �' j � : € ` � - � . � ( 4 : � e � � : . 1 R , y i 5Il:TY riAND �'RA3lEL V411TH �� i F � r i i r r � r� � .p. t t t 1 :1 . . .. 'L'�3$Bl.� , , , , 1� � _ �� i� � � e� � ;�� . . . � . i._ r . . �: i_ x� ._ .. . . �Q� " .� . �� I i ��. ; i }.... . .. � � � n f� � � �� i y _ � _ � �� S� �t7$ � � � i � ' °i i y � j t � 1 . . i. `e.. �- . �. �. a� � �', � � . . . . ,. �� . i r a.. . .a f- � i' _ `� �i } � � � i r� t i r i � i . . � .. � . . � . �.'. � ;:� ;.. , 1 �. . . � 1-'1�1 �� i� _ � r— � � � �� SAN� 5tl.7Y CLAY i �� r � ;�� ; 1 ; ,� � � � , , s � �ti ' r ; � _ i i � i r w t a - 1l.TY S/kN�� t2AlfEL iTH� ; ;� � � � � � 4� �, '� '� � , Gfl8l4C.E � � 71�� : � �� e K� �� i� � � y� r e � � , c � � � ' ' � � � � � a� ; i : � ; � ; � i . ��i�* � � � f 7 - . � ._. ' . .. �. � 1 .:f. . .. i #�.�-� .:1 . � , I � .. � _. __ �. .� 1 1 :� 4�. . �� . .� ,� . . � - ��?� ��,� � � i �d i ��. i i.�.. ,1 �. �. .� � � . . . .. � . j 1 � J. �i�. :j.. �.i�. � i - . �.f: - 1 �� y 1 i � _ �� ; � # �... 1 �,: y� . .{ . 1 .. . � � y 1 r ._ .i i. 1 .�_ i �� # . � _ f f- r . . . _._ _ _ �-�� . ;. J. 1 :1 . {� 4��. #'.. .1 .;j �' 1 l � .. � ' _ ' i -t ! �� t _�. ¢ �.�. ��. C � . . . _ . ��7 , � .� :t� i� .� �� }` .. �- �1.� � .. . � i t1 I . �� '� � i�. 1 1. - . . 7 :1 � � .. � . � � 1 _ + 1 a � � . . . .. '�1'8 J ! i ' i ; � � � , _ _ �� A � w � .. � � k i � �t k ) ,( . _� . - �y � �.� / . . � �i j�-� �� . ��,1 a � 1 �i i 1 �I�i � .j: . i.. . . . . ... . + .� � .�{ ..1.� .t . . �. i . �i .1 .� �.. � ..A .. �� . '��d � . i. .. � �." �� r ( ':. . � � .. j . �� j� � Y.� j � . �� 1. 1 � 1. y. . �� j� �.j� i � . 7 ! . . � �� :e 'A� �� . � . . . � � , S . � 1. ..$� `�. � 'k22 �� ;�� ' � � � � e r w f «: � t . !� '�i 1 . 1 i.. 1'.. � i�� ' ��. � � �.. � ... /��.. . . i �. ;._ 1 . - 7 � __ __. _ ( . . . . f} + 1 . �� ,. � _ ;.. }. i�. «,.. . . ��'L� � . .; � :i ..� 1� '. i� f . . j� �. q . � . r i � � i , � i i 7 t � �25 � � � � # 7 ` i i _ . , , � � � i _ �. � k � a � r r � i r � r � � 1 1 : . �1 - �A :t�� I� ' !:. .j. �.' ....: . '-1 ��:A 1 � � .� � . . . .�j .j . �j�. � ( .!- . .j. . . 1. M j :� , . .. �- . . .�. , , .. . ,.. 9 7 � � E�+��tr�tif��atiun ai*r�s repr�sent fr�ap�roxrmaie baon�t�ry't'ines b�i�+een s�rl and rrtck lypes.insi;u,tne tra�s�i€�n ina�be gradua�. ' U1Y�t�1'Q�3S�f1t��fCY�iS Boti�g SfBrteti. 7{�f23l2{}�6" ��IIt�2�1d�l.: 4�1' Borwr�g ComA�et�; °ICff231�Qt98 wt�, �a� �.�.�, LDgged E3y 1`h� •� 1llf�tsf Ghecked: 'ID/�3lt7� TW0 f�iVef5 T�5titlt�, }f1C Ap�r�ved8�r: TMG LOG OF TEST BORE 15 (Log 1 of 5) Client: Site: Dust & Dirt, Excavating Sec 4 Township 5 North Range 65 West Description SILTY SAND WITH GRAVEL SANDY SILTY CLAY SILTY SAND WITH GRAVEL The tTW!cation Imes re Water Observations nitial WL_': tI 35 35' f -- E: ZO L co Ximate bad !'11hes betvwee WL: Water Checked: ( 10/23/06 Project: Project No.: ail a 2 Ct Slurry Wall Design 2006-201 .J 'II 7 C. a a rock types, lnsitu the trans ion may be dual T4 4 T • Two Rivers Testing, Inc. a Boring Stated: 10/23/2006 Boring Complete, 10/23/200e Logged By; TM Approved By: TMC LOG OF TEST BORE -15 { .4g 2 of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 200+6-2{11 Description IV:. O IC C. J to ju >t2 _ �r = 'I N Ia c. a Eii IYI 0 ii ^,.. Fl SANDY SIL'L'Y CLAY x n, t ! I #r1 1 4 1 I I /... 4 i Y I 1 I 4 1 r I i I { I P 1 x I 1 1 F 1 I 4 y i I I I I I I I I I I I E Y 1 L. w 1 A I 1 t 1 I} I i 1 1 4 1 1 f I I I I t 1 27 2 SILTY SAND WITH GRAVEL; 1 - - - :32 SANDYSILTCy CLAY- IL rY SAND &- GRAVEL Y t CH COBBLE 36 GROUNDWATER37 41 4,J CIS 47 4s 50 The strut iCatsoa lines represent the approximate boundary tines between it end tack types. InsiIu, Ine tansitkin may be grattu t. �PVater Observattorts 8tansag Started: 10/23/200 1 tnitial WL: 35w 1 Boring Complete: 10/23/2006 WL. 11IR 6 35 Logged eyr TM Nla€er Checked: { ; 10223100 Two Rivers Testing, Inc. Approved By: TMG +Client: Site: Du Dirt Excavating Sec 4 Township 5 North Range 65 West Description ine ri Water Observations Initial WI: 35' Wt.; 3a' Water Checked: 0/23/06` rn zsndary sines zo. 0 d Project: Project No.: en soil 1. . . Two Rivers Testing Inc. Slurry Wall Design, 2006-201 1t he tt 0 0 C CA p tion may beg ring started. tete, Lagged By -- Approved By: TM TMC LUG OF TEST BORE -15 (Log 4 of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range -65 West Project No.: 2006-201 . _ . . � � \ . . . .) ..: .. � -.� --- /�j . .. j j. . � .). 32>) ..;j' LOG OF TEST BORE -15 (Log 5 of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description n a Sample Type SPT-N (BLOWS/FT) Wales Content (%) 4 'a n J cr ato c V y vs8 a a e o C „, 8 ,y D .in a 3 aC GO O cn D SILTY SAND & GRAVEL WITH 101 a� i ; i t w COBBLE 102 103 • 104 105 106 107 108 105 110 111 i SILTSTONE {WEATHERED- BROWNj 112 ,' t 113 114 ', 110 s s 76 i I SILTSTONE (GREY) 122 a 116 117 11 a 119 120 121 122 123 124 125. T... 107 137 r I y t 1 J r , 95 I g -I The stratit at+on lines represent the approx)mate boundary lines between so4i and took types. l tsitu, the transition may be gradual. Water Observations Two Rivers Testing, Inc Boring Started: 10x23)20©6 Initial WL 35' Boring Complete: 10/2312006 WL: 35T.R.T.jogged By: TM Water Chocked: j 10/23/06 Approved oy: TMC DEPARTMENT OF THE ARMY CORPS OF ENGINEERS, OMAHA DISTRICT DENVER REGULATORY OFFICE, 9307 SOUTH %\ ADSWORTH BOULEVARD 1.CITLF:TON. COLORADO fits128-60 i l May 18, 2006 Ms. Darcy Tiglas 5015 Swainsona Drive Loveland, CO 80537 RE: Approved Jurisdictional Determination, Derr Gravel Pit Corps File No. 200680278 Dear Ms Tiglas: Mr. Terry McKee of my office has reviewed this project during his May 17, 2006 site visit. This project is located the NE V of Section 4, T5N. R65W, Weld County. Colorado. This review was in accordance with Section 404 of the Clean Water Act under which the U.S. Army Corps of Engineers regulates the discharge of dredged and fill material, and any excavation activities associated with a dredged and fill project, into waters of the United States. Waters of the United States include ephemeral, intermittent and perennial streams, their surface connected wetlands and adjacent wetlands and certain lakes, ponds, irrigation and drainage ditches that have a nexus to interstate commerce. Approved Jurisdictional Determination: Based upon the ruling by the Supreme Court in the matter of Solid Waste Agency of Northern Cook County v. U.S. Army Corps of Engineers, No. 99-1178 (January 9, 2001), the Department of the Army's (DA) regulatory authority over isolated, non -navigable, intrastate waters has been eliminated if the sole nexus to interstate commerce was use of the waters by migratory birds. It is apparent under the ruling above that the DA does not have the authority to regulate work in the Community A and Community B wetlands at this site. These wetlands are not waters of the U.S. and therefore non jurisdictional. No Department of the Army permit or other authorization by my office is required for work in these wetlands. This letter contains an approved jurisdictional determination for your subject site. If you object to the determination, you may request an administrative appeal under Corps regulations at 33 CFR Part 331. Enclosed you will find a Notificatinn of Appeal Process (NAP) fact sheet and Request for Appeal (RFA) form. If you request to appeal this determination you mustsubmit a completed RFA form to the Northwestern Division Office at the following address: Mores )Bergman. Appeal Review Officer US Army Corps of Engineers Northwestern Division 12565 West Center Road Omaha, Nebraska 68144-3869 Telephone (402) 697-2533 Fax Number (402) 697-2538 In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the criteria for appeal under 33 CFR part 331.5, and that it has been received by the Division Office with in 60 days of the date of the NAP. Should you decide to submit an RFA form, it must be received at the above address by July 14.2000: Although a DA Permit will not be required for work in this wetland, this does not eliminate the requirement that other applicable federal, state, and local permits be obtained as needed. This jurisdictional determination is valid for a period of five years from the date of this letter unless new information warrants revision of the determination. If you have any questions call Mr. Terry McKee at (303) 979-4120 and reference Corps File No. 200680278. Sincerely. J. Scott Franklin Chief, Denver Regulatory Office tm JURISDICTIONAL DETERMINATION Revised 8/13/04 U.S. Army Corps of Engineers DISTRICT OFFICE: Omaha District Denver Regulatory Office FILE NUMBER: 200680278 PROJECT LOCATION LNFORMATION: State: Colorado County: Weld Center coordinates of site (latitude/longitude) 40 23 48 104 39 59 Approximate size of area (parcel) reviewed, including uplands: GU acres. Naive of nearest waterway: Cache la Pniidre River Name of watershed: Cache la Poudre JURISDICTIONAL DETERMINATION Completed: Desktop determination ❑ Date: Site visit(s) ® t)ate(st: May 17, 2(106 Jurisdictional Determination (JD): O Preliminary JD - Based on available information, O their appear to he (or) O there appear to be no "waters of United States" and/or "navigable waters of the United States" on the project site. A preliminary JD is not appealable (Reference 33 CFR part 331). ® Approved JD - As approved JD is an appealable action i Reference 33 CFR part 331). Check all -that apply:---- _... _ O There are "navigable waters of the United .States" (as defined by 33 CFR part 339 and associated quid r. vt within the reviewed area. Approximate size of jurisdictional area: _ ❑ There are "waters of the United States" (as defined try 33 CFR pan 328 and associated guidance) within the reviewed area. Approximate size of jurisdictional area; ® There are "isolated. nun -navigable. intro -state waters or wetlands" within the reviewed area. • Decision supported by SWANCC/Migratory Bird Ru'.e Information Sheet for Determination of No Jurisdiction. BASIS OF JURISDICTIONAL DETERMINATION: A. Waters defined under :33 CFR part 329 as "navigable waters of the United States • The presence of waters that are subject to the ebb and flew of the tide andor are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce. B. Waters defined under 33 CFR part 328.3(a) as "waters of the United States": O (1) The presence of waters. which an: currently used. or were used in the last, or may be susceptible to use in interstate or foreign commerce. including all waters which are subject to the ebb and flow of the tide. • (2)The presence of interstate waters including interstate wetlands. • (3) The presence of other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats. sandilats, wetlands, sloughs, prairie potholes, wet meadows. playa lakes, or natural ponds, the use, degradation for destruction of which could affect interstate commerce including any such waters (check all that apply): ❑ (i) which are or could be used by interstate or foreign travelers for recreational or other purposes. ❑ (ii) from which fish or shellfish are or could be taken and sold in interstate or foreign commerce. • (iii) which arc or could he used for industrial purposes by industries in interstate commerce. O (4) Impoundments of waters otherwise defined as waters of the LIS. • (5) The presence of a tributary to a water identified in (1) - (4) above. • (6) The presence of territorial seas. ❑ (7) The presence of wetlands adjacent' to other waters of the IIS, except for those wetlands adjacent to other wetlands. Rationale for the Basis of Jurisdictional Determination (applies to any boxes checked above). If thejurisdictional_ hater or wetland is not itself a navigable water oldie e United States, describe connection(s) to the dim itstream navigable waters, If B(1) or B(3) is used as the Basis ofJurisdiction, document navigability anchor interstate commerce connection discuss .site conditions. including why the waterbed.), is navigable (mbar hi,ow the it..si nt lion of the a air..bods crtnld affect interstate or foreign commerce). l(!3(?. 4, ? or 6) is tem! as the Basis of Jurisdiction. document the t•ationale used to make the determination. if R(7) is used as the Basis al -Jurisdiction. document the rationale used to ma/•e adjacency determination: Lateral Extent of Jurisdiction: (Reference: 33 CFR parts 328 and 329) O Ordinary High "Water Mark indicated by: O High Tide Line indicated by: ❑ clear. natural line impressed on the bank O oil or scum line along shore objects ❑ the presence of litter and debris O fine shell or debris deposits (foreshore) ❑ changes in the character of soil O physical markingscharacteristics ❑ destniction of terrestrial vegetation O tidal gages ❑ shelving O other: ❑ other: ❑ Mean'iligh Water Mark indicated by: ❑ survey to available datum; O physical markings; O vegetation lines/changes in vegetation types. • Wetland boundaries, as shown on the attached wetland delineation map and/or in a delineation report prepared by: Basis For Not Asserting Jurisdiction: O The reviewed area consists entirely of uplands. • Unable to confirm the presence of waters in 33 CFR part 328(a)(l, 2. or 4-7). • Headquarters declined to approve jurisdiction on the basis of 33 CFR part 328.3(a 1(3). C The Corps has made a case -specific determination that the following avaters present on the site arc not Waters of the United States: ❑ Waste treatment systems, including treatment ponds or lagoons. pursuant to 33 CFR part 328.3. ❑ Artificially irrigated areas, which would revert to upland if the irrigation ceased. ❑ Artificial lakes and ponds created by excavating and:or diking dry land to collect and retain water and which arc used exclusively for such purposes as stock watering, irrigation, settling basins, or rice grooving. ❑ Artificial reflecting or swimming pools or other small ornamental bodies of water created by excavating and/or diking dry land to retain water for primarily aesthetic reasons. ❑ Water -filled depressions created in dry land incidental to construction activity and pits excavated in dry :and for the purpose of obtaining fit. sand, or gravel unless and until tie construction or excavation operation is abandoned and the resulting body of water meets the definition of waters of the United Sates found at 33 CFR 328.3(a). E Isolated, intrastate wetland with no nexus to interstate commerce. O Prior converted cropland, as determined by the Natural Resources Conservation Service. Explain rationale: ❑ Non -tidal drainage or irrigation ditches excavated on dry land. Explain rationale: ® Other (explain): Community A and Community B wetlands are neither adjacent to nor surface connected to a waters of the U.S. DATA REVIEWED FOR JURSIDICTIONAI. DETERMINATION (mark all that apply): Maps. plans, plots or plat submitted by or on behalf of the applicant. ID Data sheets prepared/submitted by or on behalf or the applicant. El This office concurs with the delineation report, dated _May 2006 ,prepared by (company): Darcy Tiglas ❑ This office does not concur with the delineation report, dated , prepared by (company): • Data sheets prepared by the Corps. Corps' navigable waters' studies: • U.S. Geological Survey Hydrologic Atlas: U.S. Geological Survey 7.5 Minute Topographic maps: Greeley U.S. Geological Survey 7.5 Minute Historic quadrangles: U.S. Geological Survey 15 Minute'fish:6c quadrangles: O USDA Natural Resources Conservation Service Soil Survey; • National wetlands inventory maps: d State/Local wetland inventory maps: (Q FLMAIIIRM maps (Map Name 81 Date): 100 -year Floodplain Elevation is: (NGVl)) Ig Aerial Photographs (Name & Date): Figure 3 February 200t, Q Other photographs (Date): no date • Advanced identification Wetland maps: Site visit'detcnninatior conducted on: May I 7. _006 Applicableisupporting case law: • Other information (please specify): 'Wetland( are identified anddeliaeated using the methods and criteria established in the Corps Wetland Delineation Manual (87 Manual) (i.e., occurrence of hydrophytic vegetation, hydric soils and wetland hydrology). 2The term "adjacent" means bordering. contiguous. or neighboring. Wetlands separated from other waters of the U.S. by man-made dikes or barriers, natural river berms, beach dunes, and the like are also adjacent. ?f ' ' PTIONS A >pl�Oc ss A 12EQi T FO i .,, 3 APPEAL pplicant: Derr Gravel Pit I File Number: 200680278 Date: May 17.2006 -Attached is: _ See Section below A INITIAL PROFFERED PERMIT (Standard Permit or Letter of:net-mission) PROFFERED PERMIT (Standard Permit or Letter ofpermission) B PERMIT DENIAL c D X APPROVED JURISDICTIONAL DETERMINATION SE decision. f_nrp PRELIMINARY JURISDICTIONAL DETERMINATION ON'I -: The 'otlowmg identifies your rights and options regarding an administrative Additional information may be found at http://usace.amiy.mil/inet/functions/cw/cccwo/reg g t}atinns at �� t `FR Part 131 E appeal of the above or A: INITIAL PROFFERED PERMIT: You may accept or object to the permit. ACCEPT: - If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and Haire all rights to appeal the permit, including it.s terms and conditions, and approved jurisdictional determinations associated with the permit. • OBJECT: If you object to the permit (Standard or LOP) because of certain terms and conditions therein, you may request that the permit be modified accordingly. You must complete Section Ii of this form and return the form to the district engineer. Your objections must be received by the district engineer within 60 days of the date of this notice. or you will forfeit your right to appeal the permit in the future. Upon receipt of your letter, the district engineer will evaluate your objections and may: (a) modify the permit to address all of your concerns, (b) modify the permit to address some of your objections, or (c) not modify the permit having determined that the permit should be issued as previously written. After evaluating your objections. the district engineer will send you a proffered permit for your reconsideration. as indicated in Section 11 below. : PROFFERED PERMIT: You may accept or appeal the permit • ACCEPT: If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the permit. • APPEAL: It'you choose to decline the proffered permit (Standard or LOP) because of certain terms and conditions therein. you may appeal the declined permit under the Corps of Engineers Administrative Appeal Process by completing Section Ii of this form and sending the form to the division engineer. This form must he received by the division engineer within 60 days of the date of this notice. C: PERMIT DENIAL: You may appeal the denial of a permit under the Corps of Engineers Administrative Appeal Process by completing Section aI of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. D: APPROVED JURISDICTIONAL DETERMINATION: You may accept or appeal the approved JD or provide new information. • ACCEPT: You do not need to notify the Corps to accept an approved JD. Failure to notify the Corps within 60 days of the date of this notice, means that you accept the approved JD in its entirety, and waive all rights to appeal the approved JD. • APPEAL: If you disagree with the approved JD, you may appeal the approved ii) under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice, E: PRELIMINARY JURISDICTIONAL DETERMINATION: You do not need to respond to the Corps , warding the preliminary JD. The Preliminary JD is not appealable. If you wish, you may request an approved (which may be appealed), by contacting the Corps district for further instruction. Also you may provide new information for further consideration by the Corps to reevaluate the JD. SECTION II - REQUEST FOR APPEAL or OBJECTIONS TO AN INITIAL PROFFERED PERMIT REASONS FOR APPEAL OR OBJECTIONS: (Describe your reasons for appealing the decision or your objections to an initial proffered permit in clear concise statements. You may attach additional information to this form to clarify where your reasons • objections are addressed in the administrative record.) ADDITIONAL INFORMI 1TI0N: The appeal is limited to a review of the adminktrativc re;;ord, the Corps memorandum for the record of the appeal conference or meeting, and any supplemental information that the review officer has determined is needed to clarify the administrative record. Neither the appellant nor the Corps may add new information or analyses to the record. However, you may provide additional information to clarify the location of information that is already in the administrative record. POINT OF CONTACT FOR QUESTIONS OR INFORMATION: 11'you have questions regarding this decision and: or the appeal If you only have questions regarding the appeal process you may process you may contact: also contact: Timothy T. Carey Chief, Denver Regulatory Office 9307 South Wadsworth Boulevard Littleton, CO 80128 (303) 979-4120 US Army Corps of Engineers Northwestern Division Attn: Mores Bergman, Appeal Officer 12565 West Center Road Omaha. Nebraska 68144-3869 Telephone (402) 697-2533 RIGHT OF U\'I RY: Your signature below grants the right of entry to (.`orps of Engineers personnel, and any government consultants, to conduct investigations of the project site during the course of the appeal process. You will be provided a 15 day ""ice of any site investigation, and will have the oppotiuni y to participate in all site investigations. EXHIBIT L Reclamation Cost A phased and cumulative bonding approach has been provided for the Derr Pit Project. The required financial warranty amounts have been provided to reflect the phasing and quantities. Below is a summary table of the financial warranty required for each phase and the cumulative financial warranty required as the mining progresses through the phases. Additional Financial Warranty Required Cumulative Financial Warranty Phase 1 $1,883,768 $1,883,768 Phase 2 $24,505 $1,908,273 Phase 3 $29,401 $1,937,674 Phase 4 $33,485 $1,971,159 Phase 5 $3,442,751 $5,413,910 Phase 6 $55,037 $5,468,947 Phase 7 $98,855 $5,567,802 These amounts assume that no reclamation activity has occurred. As each new phase is started, the financial warranty for that phase will be posted with the Division. When a phase has been reclaimed, inspected, and accepted by the Division, the associated financial warranty for that phase will then be reduced/released to 20% of the financial warranty required for that phase. Please see the attached calculations for details of the costs and quantities used to determine the financial warranty required for each phase of mining. J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit Amendment J&T Consulting, Inc. Reclamation Bond Quantities and Costs © 2018 J&T Coneultlnz, Inc. Broken Arrow Investments, LLC Derr Pit 6/8/2018 tpy Summary of Unit Costs Direct costs Re -applying topsoil 6" thick Revegetating disturbed area Dewatering full pit Slurry Wall Cost (61 foot average depth @ $4.80/ft) Perimeter Drain Scarifying Ground Mobilization Overhead and Profit Costs Liability insurance Performance bond Profit Project Management Engineering and bidding Management and administration $1,800.00 $1,000.00 $200.00 $293 $20 $200 $2,500 1.55% 1.05% 10.00% / acre / acre / million gallons / linear foot / linear foot / acre lump sum of direct cost of direct cost of direct cost Total Overhead Cost 12.60% of direct cost 4.25% of direct cost 5.00% of direct cost Total Additional Cost 9.25% of direct cost JT J&T Consulting, Inc. Reclamation Bond Quantities and Costs © 2018 JoT Consulting, Inc. Broken Arrow Investments, LLC Derr Pit 6/8/2018 tpy Phase 1 (6.92 acres) Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Slurry Wall Required to Close Phases 1-4 Perimeter Drain Dewatering of Phase 1 Area Mobilization Quantity Unit Unit Cost Cost 0.6 ac 0.6 ac 0.6 ac 4,922 If 3,450 If 79.4 Mil. Gal. 1.00 Is $200 $120 $1,800 $1,080 $1,000 $600 $293 $1,442,146 $20 $69,000 $200 $15,880 $2,500 $2,500 Total Direct Cost $1,531,326 Overhead and Profit Cost (12.60%) $192,947 Contract Cost $1,724,273 Project Management (9.25%) $159,495 Financial Warranty Required For Phase 1 $1,883,768 Phase 2 (6.81 acres) Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Dewatering of Phase 2 Area Mobilization Quantity Unit Unit Cost Cost 0.6 ac 0.6 ac 0.6 ac 78.1 Mil. Gal. 1.00 $200 $1,800 $1,000 $200 Is $2,500 $120 $1,080 $600. $15,620 $2,500 Total Direct Cost $19,920 Overhead and Profit Cost (12.60%) $2,510 Contract Cost $22,430 Project Management (9.25%) $2,075 Additional Financial Warranty Required For Phase 2 Cummulative Financial Warranty Required For Phases 1-2 $24,505 Phase 3 (8.21 acres) $1,908,273 Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Dewatering of Phase 3 Area Mobilization Quantity Unit Unit Cost Cost 0.7 ac 0.7 ac 0.7 ac 96.5 Mil. Gal. 1.00 $200 $1,800 $1,000 $200 Is $2,500 $140 $1,260 $700 $19,300 $2,500 Total Direct Cost $23,900 Overhead and Profit Cost (12.60%) $3,011 Contract Cost $26,911 Project Management (9.25%) $2,489 Additional Financial Warranty Required For Phase 3 Cummulative Financial Warranty Required For Phases 1-3 $1,937,674 $29,401 J&T Consulting, Inc. Reclamation Bond Quantities and Costs © 2018 J&T Consulting. Inc. Broken Arrow Investments, LLC Derr Pit 6/8/2018 tpy Phase 4 (9.90 acres) Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Dewatering of Phase 4 Area Mobilization Quantity Unit Unit Cost Cost 0.8 0.8 0.8 111.6 1.00 ac ac ac Mil. Gal. Is $200 $1,800 $1,000 $200 $2,500 $160 $1,440 $800 $22,320 $2,500 Total Direct Cost $27,220 Overhead and Profit Cost (12.60%) $3,430 Contract Cost $30,650 Project Management (9.25%) $2,835 Additional Financial Warranty Required For Phase 4 Cummulative Financial Warranty Required For Phases 1-4 $33,485 Phase 5 (13.94 acres) $1,971,159 Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Slurry Wall. Required to Close Phases 5-7 Perimeter Drain Dewatering of Phase 5 Area Mobilization Quantity Unit Unit Cost Cost 10.3 ac $200 10.3 ac $1,800 10.3 ac $1,000 8,964 If $293 5,430 If $20 150.9 Mil. Gal. $200 1.00 Is $2,500 $2,060 $18,540 $10,300 $2,626,452 $108,600 $30,180 $2,500 Total Direct Cost $2,798,632 Overhead and Profit Cost (12.60%) $352,628 Contract Cost $3,151,260 Project Management (9.25%) $291,492 Additional Financial Warranty Required For Phase 5 Cummulative Financial Warranty Required For Phases 1-5 Phase 6 (11.67 acres) $3,442,751 $5,413,910 Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Dewatering of Phase 6 Area Mobilization Quantity Unit Unit Cost Cost 4.7 ac 4.7 ac 4.7 ac 140.7 Mil. Gal. 1.00 Is $200 $1,800 $1,000 $200 $2,500 $940 $8,460 $4,700 $28,140 $2,500 Total Direct Cost $44,740 Overhead and Profit Cost (12.60%) $5,637 Contract Cost $50,377 Project Management (9.25%) $4,660 Additional Financial Warranty Required For Phase 6 Cummulative Financial Warranty Required For Phases 1-6 $5,468,947 $55,037 J&T Consulting, Inc. Reclamation Bond Quantities and Costs © 2018 J&T Consulting. Inc. Broken Arrow Investments, LLC Derr Pit 6/8/2018 tpy Phase 7 (17.75 acres) Reclamation Operation Active Mining Area Scarifying Disturbed Area Topsoil Placement Disturbed Area Revegetate Disturbed Area Dewatering of Phase 7 Area Mobilization Quantity Unit Unit Cost Cost 13.1 ac $200 $2,620 13.1 ac $1,800 $23,580 13.1 ac $1,000 $13,100 192.8 Mil. Gal. $200 $38,560 1.00 Is $2,500 $2,500 Total Direct Cost $80,360 Overhead and Profit Cost (12.60%) $10,125 Contract Cost $90,485 Project Management (9.25%) $8,370 Additional Financial Warranty Required For Phase 7 Cummulative Financial Warranty Required For Phases 1-7 $5,567,802 $98,855 GREAT LAKES ENVIRONMENTAL & INFRASTRUCTURE May 22nd, 2018 Mr. Randy Geist Loloff Construction Inc. c/o Global Asset Recovery, LLC 801 8th Street Greeley, Colorado 80631 Sent Via Email: rrgeist2@aol.com Subject: Budget Price Proposal for Cutoff Wall Construction Derr Gravel Pit — Slurry Wall Greeley, Colorado Dear Mr. Geist, GLEI.COM 3541 Teasley Lane, Suite 200 DENTON, TX 76210 Great Lakes Environmental & Infrastructure, LLC (Great Lakes E&I) is pleased to submit this budgetary proposal for the installation of the Soil Bentonite Slurry Cutoff Wall at the above referenced project. It should be noted that due to the nature of the project, limited information and timeline, Great Lakes E&I is providing this pricing strictly as budgetary basis. Great Lakes E&I has extensive experience in the installation of cutoff walls and can assemble a team focused on providing Loloff Construction Inc./Global Asset Recovery, LLC (LCI) with the exact knowledge and experience necessary to construct the slurry wall at your site. SCOPE OF WORK The scope of work consists of mix design and construction of approximately 4920 feet long Soil-Bentonite Slurry Wall keying into the aquitard or confining layer at an estimated average depth of 61 feet below a prepared work platform per the general information provided. The proposed Slurry Cutoff Wall would be installed using conventional methods consisting of excavating the cutoff wall from a prepared work platform using a long reach excavator. It should be noted that the use of hydraulic clamshell bucket or drop chisel has not been included in this budgetary cost estimate. The required work pad width will need to be 70 -feet to 80 -feet. Great Lakes E&I has not review the exploration logs for the project at this time but has previous experience on an adjacent property as such this general experience has been used to develop the budgetary cost. Imported supplemental material will be required to augment excavated soils and produce the soil-bentonite backfill. Typically this can be supplied from the overburden materials from former mining operations and will be handled by others. Details of the proposed mix design and construction methods would be included in a prepared work plan that would be site specific for the project. SCHEDULE We estimate that the cutoff wall will be completed in accordance with the following schedule: • Mix Design and Reporting: 4 Weeks • Mobilization: 1.5 Weeks • Slurry wall construction: 9 Weeks • Demobilization: 1 Week The schedule is based on working six days per week and ten to twelve hours per day utilizing two concurrent headings. BUDGETARY PRICING The budget prices for the cutoff wall construction are as follows: ITEM NO. DESCRIPTION ESTIMATED QUANTITY UNIT UNIT PRICE EXTENDED TOTAL 1 Slurry Wall Mix Design and Reporting 1 LS $ 7,000.00 $ 7,000.00 2 Mobilization, Site Preparation, Assembly and Demobilization of necessary labor, Materials, and Equipment, as required 1 LS $ 180,000.00 $ 180,000.00 3 Soil-Bentonite Slurry Wall Construction with the average depth of 61 -feet below prepared work platform surface 300,175 SF $ 4.10 $ 1,230,717.50 4 Water Treatment for Source Water 300,175 SF $ 0.07 $ 24,850.00 Total Budgetary Proposal Amount $ 1,442,567.50 SERVICES TO BE PROVIDED BY OTHERS • A representative composite soil sample from the proposed alignment for preconstruction mix design testing. • Provide supplemental fill material as required (estimated to be 25000 -cubic yards) for the installation of the slurry wall if needed • Work pad construction providing a stable, level work platform capable of supporting our excavation and backfill equipment will be required. GREAT LAKES ENVIRONMENTAL & INFRASTRUCTURE • Storm water pollution prevention and environmental protection. • Underground utility locate, removal and/or replacement. • Construction of the permanent cap for cutoff wall. Great Lakes E&I will construct a temporary non -compacted curing cap to prevent desiccation of the top of the cutoff wall. • Final site and staging areas restoration. • Survey of cutoff wall alignment and off -set control points. • Erosion and sediment controls • Permits that may be required Assumptions and Clarifications In preparing our budgetary proposal and associated price, we have assumed and/or excluded the following: Work will be done in accordance with mutually agreed upon terms and conditions • Costs associated with utilizing a drop chisel and or hydraulic clamshell have not been included • Great Lakes E&I's pricing does not include pricing for a payment and performance bond. Should a bond be required an additional 1.0% of the final contract value would apply • Great Lakes E&I will be responsible for on -site quality control support; testing and reporting for all work associated with the cutoff wall construction in accordance with the final design specifications. • Great Lakes E&I's price does not include drying reagents for excess slurry, soil and/or spoils. It is currently assumed that excavated soils, spoils, and slurry will be cast along with the outer edge of each work platform • Great Lakes E&I's pricing is based on the ability of mixing the soil-bentonite backfill adjacent to the trench; as such no allowances have been made for remote mixing. Great Lakes E&I is looking forward to working with the LCI project team again for a safe, successful and quality project. Should you require any further information or discussion of this proposal in detail, please contact our Texas office at (940) 381-6600. Sincerely, Great Lakes Environmental & Infrastructure Jeffrey H. Sallas Vice President of Infrastructure Programs CC: Kelly Hodge (LCI) File Copy GREAT LAKES ENVIRONMENTAL & INFRASTRUCTURE EXHIBIT S Permanent Man -Made Structures within 200 Ft of the Affected Land Surface Use/Damage Waiver Agreements that have been obtained, and associated structures: Owner: DCP Midstream Structures: Oil/Gas Lines Owner: City of Greeley Structures: Improved/gravel roadway, culverts Owner: Loloff Construction, Inc. Structures: Fencing, Slurry Wall Owner: Global Assel Recovery, LLC Structures: Fencing Surface Use/Damage Waiver Agreements that are being pursued, and associated structures: Owner: Centurylink Structures: Phone/Fiber lines Owner: City of Greeley Structures: Improved roadway/ROW, signs, culverts, borrow ditches Owner: David Bliss Structures: Buildings, fencing Owner: DCP Operating Company, LP Structures: Oil/Gas Lines Owner: Dixie Ann Hoffner and Jerry Winters Structures: Fencing Owner: Extraction Oil and Gas, LLC. Structures: Oil/Gas lines, Oil/Gas Wells Owner: Gene Murata Structures: Building Owner: Hoshiko Land Structures: Irrigation Structure Owner: James Koehler Revocable Trust J&T Consulting, Inc. Derr Pit Project DRMS112 Permit Amendment Structures: Owner: Structures: Owner: Structures: Owner: Structures: Owner: Structures: Owner: Structures: Owner: Structures: Owner: Structures: Owner: Structures: Buildings, fencing JBS Sewer Force Main Jeanette Snow Buildings, fencing Kerr McGee Oil & Gas Onshore LP Oil/Gas lines, Oil/Gas Wells Noble Energy Oil/Gas lines, wells, pumps, tanks North Weld County Water District Water lines Sylvia and Verne Parker Buildings Weld County Planning and Building Improved roadway/ROW, signs, culverts, borrow ditches Xcel Energy Power lines/poles, Electric lines (buried) Broken Arrow Investments, LLC believes that the mining operation, as proposed, will not adversely affect any of the permanent, man-made structures located within 200 ft of the affected area. However, the applicant still anticipates providing evidence of agreements for compensation with the appropriate structure owners or engineering evaluations that adequately demonstrate that the proposed mining and reclamation operations will not result in damage to the structures. J&T Consulting, Inc. Derr Pit Project DRMS 112 Permit Amendment It) m GRE U.S. Postal Service CERTIFIED MAILRECEIPT Domestic fvinil Only ri rn ru ci 0 ci r3 for delivery information, visit our website at vn; w.iisps.ccni. Conned Mall Fee $3.45 Rrs.^,ervR.vrs d Fees Ow* har,Certified WA Restricted Deevery QM& Signature Recoileda 3f).00 Qty $ ",G0 Sontrr, James Koehler Revocable Trust t�- 1001 E C St 't Greeley, CO 80631-95980 See Reverse tor {nstloctions • FS Form 3800, April 2015 F N 34 ,2 ,.u,. U.S. Postal Service - CERTIFIED MAIL RECEIPT Domestic P.iarl Only Certified Mail Fee ,# Extra; QRaten Receipt plerellfted: isten ReMdeied Osten 0Aduli Required °Mali Stratum Restricted Densely $ €$0.50 Total P Stint:Tn _..... ri Gene Murata N S 29485 County Road 43 L Greeley, CO 80631-9601 ru rn r -- 75 t1L.nfl $Cr,00 PS Form 3800, April 20t5 Pee 735 ^ cr04. See Reverse for listructions U.S. Postal Service' CERTIFIED MAIL" RECEIPT c Prloil Only, c c c I rR N O N For delivery information, visit of_r website at www.usps.corn GRE Y Cl $9.0' $0 00 $0.00 )0.00 PR atai Postage and Fees $6.70. Se Weld County Planning and Bull -cling 3E 1555 N 17th Ave Greeley, CO 80631 PS Form 3800, April 20t5 PSN 7,•i "'7 See Reverse for Instructions 3147 3243, rrt U.S. Postal Service -- CERTIFIED MAIL"' RECEIPT Domestic "'Jail Only For deliver{ inf ation, visit our website at 00 /5. usp5, corn ❑t nReceiptt QcwtleedMae ed Mersey DAM* Signalises Required DAdult Signature Restricted S _ Total Postage and Foes $6.70 $ S"Syro Sylvia & Verne Parker 3 S 211 Balsam Ave t Greeley, CO 80631-9572 See Reverse for Instructions PS Form 3800, April 2015 s"," r'l rn El U.S. Postal Service"° CERTIFIED MAIL1 RECEIPT Domestic. !Jail Only. For delivery information. visit our websi GRE Y CI F satire S9ry &fee (doe* .(awnReceipt e PY) QReuenReceipt (electron's) Qceueed Met Restricted DeNyefy °Amat Signature Required QSIgnseure Alec P Wits Postage 50 Fees $6.70 3.12 CON Jeanette Snow 503 Cherry Ave Greeley, CO 80631-9716 PS Form 3800, April 2015 PG-% - ;S 0. rev._, e7 See Reverse for Instructions U.S. Postal Service - CERTIFIED MAIL RECEIPT Domestic Mail Only For delivery information, visit our website at tvtvvv.usps.coot Total Postage and Fees $6.70 r�-3 Sent 7 city of Greeley Community 3"treef Develop P- 1100 10"St N n ti O C3 N to q3 N c N n U.S. Postal Service °` CERTIFIED MAIL RECEIPT Domestic !;Lail Only .45 Aaetr2Services&tf Oftumilecoptioectrono Ocotok4a a Itrewruy DActuot smog'. Required QAMtwoman IbmitrIctedDeremyt A $0.00 $0.00 est PS Form 38O0, April 2015 Est 3 --2.7ttti ` O St re Reverse for Instructions U.S. Postal Service " CERTIFIED MAIL`' RECEIPT Domestic Mail Only For delivery information. visit our website at wtwv.usps.corn 0 A1. US U.S. Postal Service'' CERTIFIED MAIL' RECEIPT ADertifted Mali Fee $3.45 Extra Services & Fees tceseck ensure Clam= mow ttol 0osturw akin Ragweed oeawen cpututt signet. ❑Adtdt.9wetm RetAritted Postage 7 50 A 2 75 $0.00 0.00 rlKerr McGee Oil & Gas Onshore LP 109918"' St Ste 1500 Denver, CO 80202 0 512018 See Reverse for Instructions PS Form 3800, April 2015 °Snr 75.30 02000-4047 Ci U U.S. Postal Sery ce'" CERTIFIED MAIL RECEIPT Domestic Mail Only For delivery information, visit our website ,viww,Jsps.corn tip 3.45 add S. QRewm t l 8 $11.O ®GOrtll�dMdite .edt _. $0.1,o Q $ $0.00 QAdult Sonatast UfctodDelay$ $0.50 Total Po a and Fees70 r`- terra. ._ '-4 David Bliss N 13165E County Line Rd Longmont, CO 8O5O4-9796 U.S. Postal Service CERTIFIED MAIL® RECEIPT Domestic Mail Only Sent To Xcel Energy Si 1500 6"' Ave i Greeley, CO 80631-1430 PS Form 38OO, April 2015 SON :",z,o-e2-000-no4 See Rev,rrse for Instructions rta x'. N a9 +tJ m to ci ci c:i O r' N a $ U.S. Postal Service"' CERTIFIED MAIL' RECEIPT Domestic Mail Only For delivery information. visit our website at We w usps.coni GRE Certified Mali Fee $3 . 45 Extra Services F, Fees feheckbw, add 4aucn t +at $ ❑ ossum Recut teiec2mioa 0Certified MA Fiesteictoci Dels $0.00' Onetst*insure Requed $ $0.00 °Adult Signature Restricted Whom). S. IA Postage $0.50 Total Postage and Xe s 0_10' 03 a rn r1 U.S. Postal Service CERTIFIED MAIL RECEIPT Domestic Mail Only For delivery information, visit our website at www.usps_com `. t~0V a U.S. Postal Service', CERTIFIED MAIL' RECEIPT Domestic Mail Only 0nea C3 Q 0 .7 Tn, Dixie Ann Haffner & Jerry Winters d N 49 WiQgwcroft Dr Littleton, CO 80123-7908 See Reverse tor Instructions PS Form 3800, April 2015 PS: a-o2G"v op F U.S. Postal Service'''' CERTIFIED MAIL RECEIPT For delivery information. visit our website at wtvw.usps.corn . a t 4�'1 t ' 1 ,T Certi i-9 nri L N N tloshiko Land PO Box 119 Kersey, CO 80644-1)199 PS Form 3800, April 2015 PSN'r530t °sa3oa7 See Reverse for Instructions u m 1450 0002 3148 $ U.S. Postai Service - CERTIFIED MAIL RECEIPT Domestic /Jail Only 3.45 Extra Services4 � sz-7o -erileturn Receipt =loopy) 5 ['Return $ $0.00 ac rwn dMau a $0.00 °Adult slgnswwe Rooked —4040- 0Adult Stratum Restrictedoe8very $ $0.50. Total P Sent U.S. Postal Service CERTIFIED MAIL RECEIPT °A DAaw• taistactad $ .50 $2-75 SO .00 $0.00 $0.00 North Weld County Water District PO Box 56 Lucerne, CO 80646 PS Form 38O0, April 2015 PSN 753C,02.00, -p-3047 See Reverse tor Instructions Broken Arrow Investments, LLC 801 8t' Street, Suite 130 Greeley, CO 80631 Global Asset Recovery, LLC 6530 Constitution Dr. Fort Wayne, IN 46804 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008=078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit: 'to Broken Arrow Investments, LIZ 801 8t° St., Suite 130 Greeley, CO 80631 (303) 566-5090 Global Asset Recovery, LLC RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities 2_ structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineers Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Global Asset Recovery, LLC to zv/e Date The foregoing instrument was acknowledged before me this day of J "A— i' 2'lr by, Broken Arrow Investments, LLC 801 8th St, Suite 130. Greeley, CO 80631 (303) 566-5090 Global Asset Recovery, LLC RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: Broken Arrow Investments, LLC 801 8tn St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8`h Street, Suite 130 Greeley, CO 80631 Loloff Construction, Inc. 801 8th St., Suite 130 Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LW is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged 'by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program: Galena was designed to Broken Arrow Investments, LLC 801 8eh St., Suite 130 Greeley, CO 80631 (303) 566-5090 Loloff Construction, Inc. RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities - 2 - analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities: Sincerely, Broken Arrow Investments, LLC 4etV.,e 6-L/_0( Loloff Construction, Inc. Date The foregoing ins ment was acknowledged before me this 4 day of J VIA -- R 6-tt—f OFFICIAL SEAL MICHAEL S HOLLIS NOTARY INDIANA ALLEN COUNTY Comm. Expires Nov. 18, 2021 k by, Notary Public My Commission Expires; i i t t? Broken Arrow investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130. Greeley, CO 80631 Centurylink 175 14th Street SE Loveland, CO 80537 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Centurylink Centurylink RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEQ) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEQ for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Token Arrow I vestments, LLC ate Date Broken Arrow Investments, LLC 801 8th St:, Suite 130 Greeley, CO 80631 (303) 5665090 Centurylink RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities 3 - The foregoing instrument was acknowledged before me this 4 day of J Vk v RtN Lt t �,�►.s- , as VIA 6%0%4-5 �- Wl vk't ( /✓ Notary Public. ,2618 My Commission Expires: it Id 2.0' rim iJr'OFAFIICIAL. SEAL MICHAEL S i i0NDIANA NOTARY PUBLIC - ALLEN COUNTY rps 18.2021 my ColtIrn• Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8t'' Street, Suite 130 Greeley, CO 80631 City of Greeley Community Development 1100 10th Street, Suite 202 Greeley, Colorado 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 City of Greeley RE. Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the. slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment: The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquakepeak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, City of Greeley Date The foregoing instrument was acknowledged before me this 4 day of UVIA-c.-- fist K..ci if g-6 t�st Broken Arrow Investments, LLC ,tt by, 801 8th St. Suite 130 Greeley, CO 80631 (303) 566-5090 City of Greeley RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- f Notary Public My Commission Expires: OFFICIAL SEAL MICHAEL S HOUIS NOTARY PUBLIC - INDIANA ALLEN COUNTY My Comm. Nov 18, 2021 Broken Arrow Investments, LLC 801 811' St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 David Bliss 13165 E County Line Rd Longmont, CO 80504 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St, Suite 130 Greeley, CO 80631 (303) 566-5090 David Bliss RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities - 2 structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7,1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, 14,°14#1,r/tel.40" B oken Arrow Investments, LLC David Bliss Date The foregoing instrument was acknowledged before me this 4 day of it/A ,n itf 1 1Q- 6 .t ,, f , as IM "-v,-#-J Zore Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, Co 80631 (303) 566-5090 David Bliss RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: OFFICIAL SEAL MICHAEL S HOLLIS NOTARY - INDIANA N COUNTY Comm. „ Nov 18, 2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 DCP Operating Company, LP 3026 4th Ave. Greeley, Colorado 80631 May 30, 2018 Re_ : Agreement for Compensation for Damage to Structures within 200 feet of mining activities To VVhorn It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken Arrow Investments, LLC 801 8th St, Suite 130 Greeley, CO 80631 (303) 566-5090 DCP Operating Company, LP RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, roken Arrow Investments, LLC Date DCP Operating Company, LP The foregoing instrument was acknowledged before me this 4 day of J vk t-- , 2-G t by, d..c l p. 6ttsf- as jwKa1,,0-- Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 DCP Operating Company, LP RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities - 3 - .J.,0 Notary Public My Commission Expires: OFFICIAL SEAL MICHAEL S HOL.IS NOTARY PUBLIC - IANA ALIEN COUNT 1 YT Comm.' Fo' Nov. 10, 2021. Broken Arrow Investments, LLC 801 Stn St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Dixie Ann Hoffner & Jerry Winters 49 Wifowcroft Dr. Littleton, CO 80123 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Dixie Ann Hoffner & Jerry Winters Date Dixie Ann Hoffner & Jerry Winters RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2_ structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, The foregoinginstrument was acknowledged before me this 4 day of, jan..t l ! 6 t s 1 ,as J v4 to by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Dixie Ann Haffner & Jerry Winters RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities 3 Notary Public My Commission Expires: OFFICIAL. SEAL MICHAEL S HOLLIS NOTAALLENRY PUBLIC FIDIANA NTY Comm. ., Nov. 18,2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Extraction Oil & Gas, LLC 370 17th St, Suite 5300 Denver, Colorado 80202 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us: DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Extraction Oil & Gas, LLC RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Broken Arrow Investments, LLC 2'/( Extraction Oil & Gas, LLC Date The foregoing instrument was acknowledged before me this 4 day of t— 24 I by, , as At a:+n.A..-t v' Broken Arrow investments, LLC 801 8th St.,Suite 130 Greeley, CO 80631 (303) 566-5090 Extraction Oil & Gas, LLC RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: t92. - OFFICIAL SEAL MICHAEL S HOWS NOTARYU INDIAN N My, Cohan.. Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8111 Street, Suite 130 Greeley, CO 80631 Gene Murata 22000 County Road 62 Greeley, CO 8O631 -96O1 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Vlthom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 2OO feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached, Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7,1 computer program. Galena was designed to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Gene Murata RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, roken Arrow Investments, LLC Gene Murata to zevie Date The foregoing instrument was ��++acknowledged before me this 4 day of J V K hci• it - (�Ctr'(- , as OFFICIAL SEAL MICHAEL S HOLLIS NOTARY PUBLIC - INDIANA ALLEN COUNTY Comm." :: Nov. 18, 2021 rn*ter Till_ s^ Notary Public My Commission Expires: Il II i� Zr/C j e by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-6090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Hoshiko Land, LLC P.O. Box 119 Kersey, CO 80644 May 30, 2018 Re.• Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. The irrigation well is the structure that is within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Hoshiko Land, LLC RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineers Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Broken Arrow Investments, LLC e Hoshiko Land, LLC Date The foreg ing instrument was acknowledged before me ' this 4 day of \1114 <- AKA 4_ 6tLs'f" as �"[st K�f.sr 20 fr by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Hoshiko Land, LLC RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- J Notary Public My Commission Expires: OFFICIAL SEAL MICHAEL S HOLLIS NOTARY PUBLIC - INDIANA ALLEN COUNTY iv Comm. • res Nov. 18, 2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8`1 Street, Suite 130 Greeley, Co 80631 James Koehler Revocable Trust 1001 ECSt Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities: Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, -CO 80631 (303) 566-5090 James Koehler RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities _2_ structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the require d safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structures) In return for this authorization, Broken Arrow. Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Broken Arrow Investments, LLC Date James Koehler The foregoi niginstrument was acknowledged before me this 4 day of '`-' VIA 4"-- 2.02.ut erby, i CUA. Olk PA t 6 , as dV IGtdIA /v" Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 James Koehler RE; Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: I I j tr OFFICIAL SEAL MICHAEL S HOLLIS NOTARY PUBLIC - INDIANA ALLEN COUNTY My Comm. „•. Nov 18, 202E Broken Arrow Investments, LLC 801 8th =St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 JBS 800 N 8th Ave. Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St, Suite 130 Greeley, CO 80631 (303) 566-5090 JBS RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this. authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, oken Arrow Investments, LLC 7-49 ate JBS Date The foregoing instrument was acknowledged before me this 4 day of J R � 1 t t Getst , as Mot rut. • Notary Public. My Commission Expires: t t r (r/2 -c2 j 20(i by, re OFFICIAL SEAL 1, MICHAEL S HOLLIS a NOTARY PUBLIC - INDIANA ,,,r ALLEN COUNTY '°. MY Comm. Nov. 18, 2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Jeanette Snow 503 Cherry Ave. Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage ;to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Jeanette Snow RE. Agreement for Compensation for Damage to Structures within 200 feet of mining activities 2_ structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration. factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, di#Ar<teessfrft-- Token Arrow Investments, LLu Jeanette Snow Date The foregoing iristrument was acknowledged before me this 'T day of Vkv glovA-lottt P.. 6 ts- Broken Arrow Investments, LLC as 14,444 4S-fv- 20 (8 by, 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Jeanette Snow RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities - 3 - G�" Notary Public My Commission Expires: t t it 12-0-z 44 V ,a v ,,. OFFICIAL SEAL 4 MICHAEL S HOLUS I NOTARY PUBLIC - INDIANA (�,'/y�ALLEN COUNTYMy pp Broken Arrow Investments, LLC 801 8t'' St, Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8`h Street, Suite 130 Greeley, CO 80631 Kerr McGee Oil 8t Gas Onshore LP 1099 18th Street, Suite 1500 Denver, Colorado 80202 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken Arrow Investments, LLC 801 8th St, Suite 130 Greeley, CO 80631 (303) 566-5090. Kerr McGee Oil & Gas Onshore, LP RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the. mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and. reclamation activities. Sincerely, ate Kerr McGee Oil & Gas Onshore, LP Date The foregoing instrument was acknowledged before me this 4 day of JOtt c. 20 of by, P«K do1 l tj f t fr- , asortAi .4 -- Broken Arrow Investments, LLC 801 8th St.,, Suite 130 Greeley, CO 80631 (303) 566-5090 Kerr McGee Oil & Gas Onshore, LP RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- a Notary Public My Commission Expires: OFFICIAL SEAL MICHAELS HOL�LIS NOTARY PUBLIC IANA ALLEN COUNTY My Comm 8.2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Noble Energy 1625 Broadway, Suite. 2000 Denver, CO 80202 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us, DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure, or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken. Arrow Investments, LLC 801 8th St, Suite 130 Greeley, CO 80631 (303) 566-5090 Noble Energy RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct, mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, BrrokenArrow In ments, LC t ate Noble Energy Date The foregoing instrument was acknowledged before me this 4 day of J 4- IQAJA( l 6 f t fas 04404.010.--- ,2,9(t t by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Noble Energy RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 North Weld County Water District P.O. Box 56 Lucerne, Colorado 80646 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 North Weld Water District RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Broken Arrow Inves ments, LLC a et, wig" North Weld Water District Date The foregoin instrument was acknowledged before me this day of V wit R_ DvA. c ` \ K 6 t t -S4 , as it4DuARhc r Z0tt by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 otary Public North Weld Water District RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities _3 My Commission Expires: t t /. r/702 ( OFFICIAL SEAL MICHAEL S HOLLIS NOTARY PUBLIC • INDIANA ..� ALLEN COUNTY «� ,.�My Comm. t Nov 182021; rr Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 8018th Street, Suite 130 Greeley, CO 80631 Sylvia & Vemie Parker 211 N Balsam Ave. Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure, or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Sylvia & Vernie Parker RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineers Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, roken Arrow Investments, LLC ate Sylvia & Vemie Parker Date The foregoing instrument was acknowledged before me this 4 day of kiVK v- 2_0if f by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Sylvia & Vernie Parker RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities 3 - My Commission Expires: I 1 tr/2_07 Notary Public OFFICIAL SEAL MICHAEL S HOWS NOTARY PUBLIC • INDIANA ALLEN My Nov.. 18.2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-.5090 Broken Arrow Investments, LLC 801 8t1 Street, Suite 130 Greeley, CO 80631 Weld County Planning & Building 1555 N 27th Ave. Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC 801 81h St., Suite 130 Greeley, CO 80631 (303) 566-5090 Weld County Planning & Building RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation ;activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, Broken Arrow Inv�stments, LLC Age Weld County Planning & Building Date Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Weld County Planning & Building RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities 3 The foregoing instrument was acknowledged before me this day of J VIA iZ L (if ✓ r , as / t k vtl� l�-r v- 6 c M Notary Public My Commission Expires: 7-0 lX by, MICHAEL S HOLLIS NOTARY PUBLIC - INDIANA ALLEN COUNTY Comm. Nov. 18.2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Weld County Planning & Building 1555 N 27th Ave. Greeley, CO 80631 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken :Arrow Investments, LLC 801 8t" St., Suite 130 Greeley, CO 80631 (303) 566-5090 Xcel Energy RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken An -ow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, :2744ce..• q,i 8 roken Arrow Investments, " C� Date Xcel Energy Date The foregoinI instrument was acknowledged before me this 4 day of A- "MP- t. ( t - G( (S + , as n/totvt4y c w-- K� Zit r by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Broken Arrow Investments, LLC 801 8th Street, Suite 130 Greeley, CO 80631 Xcel Energy 1500 6th Avenue Greeley, Colorado 80631-1430 May 30, 2018 Re: Agreement for Compensation for Damage to Structures within 200 feet of mining activities To. Whom It May Concern: Broken Arrow Investments, LLC has a State of Colorado Division of Reclamation, Mining, and Safety (DRMS) Reclamation Permit M2008-078 to allow sand and gravel mining on property within 200 feet of structures located on your property. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. Broken Arrow Investments, LLC is the new operator but the same people/employees will be working for us. DRMS Permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. Broken Arrow Investments, LLC has had an engineering evaluation performed to determine acceptable setbacks from their proposed mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Xcel Energy RE: Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) for high hazard embankment dams, and industry accepted standards for the evaluation of embankments during construction. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the SEO for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are very unlikely to be present. With this letter, Broken Arrow Investments, LLC requests your authorization to conduct mining and reclamation activities within 200 feet of your structure(s). In return for this authorization, Broken Arrow Investments, LLC agrees to provide fair compensation for any damage to your structure(s) resulting from its mining and reclamation activities. Your notarized signature below grants permission for Broken Arrow Investments, LLC to conduct mining and reclamation activities within 200 feet of your structure(s), and acknowledges Broken Arrow Investments, LLC's commitment to provide fair compensation for any damages to said structure(s) caused by Broken Arrow Investments, LLC's mining and reclamation activities. Sincerely, roken Arrow Investments, ' C Date Xcel Energy Date The foregoin instrument was acknowledged before me this 4 day of k� i 1' Ait - w ( ( l> I t S as 2c", by, Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 Xcel Energy RE Agreement for Compensation for Damage to Structures within 200 feet of mining activities -3- Notary Public My Commission Expires: 1 1 tr O2( OFFICIAL SEAL MICHAEL S HOLLIS NOTARY PUBLIC-IDIANA ALLEN COUNTY My Comm; , Nov 18, 2021 Broken Arrow Investments, LLC 801 8th St., Suite 130 Greeley, CO 80631 (303) 566-5090 SLOPE STABILITY REPORT FOR THE DERR PIT AMENDMENT M-2008-017 WELD COUNTY, COLORADO JUNE 2018 PREPARED FOR: BROKEN ARROW INVESTMENTS, LLC 801 8TH STREET, SUITE 130 GREELEY, CO 80631 PREPARED BY: JT J&T Consulting, Inc. 305 DENVER AVENUE - SUITE D FORT LUPTON, CO80621 PHONE: 303-857-6222 FAX: 303-857-6224 CERTIFICATION: I hereby certify this slope stability analysis for Broken Arrow Investments, LLC, the Derr Pit Amendment, located in Weld County, Colorado was prepared by me or under my direct supervision. James C. York Registered Professional Engineer State of Colorado No. 36846 J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page i Table of Contents I. Introduction II. Overview III. Geotechnical Data IV. Design Analysis and Criteria V. Methodology VI. Slope Stability Results VII. Conclusions and Recommendations Appendices Appendix A Slope Stability Case Location Map Appendix B Slope Stability Case Cross -Sections Appendix C Slope Stability Case Galena Output Appendix D Geotechnical Investigation Reports Appendix E USGS Map, Oct. 2002 revision — "Peak Acceleration (%g) with a 2% Probability of Exceedance in 50 yrs" JT J&T Consulting, Inc. Broken. Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page ii INTRODUCTION Broken Arrow Investments proposes to amend their current Derr Pit reclamation permit located in the Northeast 1/4 of Section 4, Township 5 North, Range 65 West, Sixth P.M. in Weld County, to include property to the north and west of the current permit area. The overall property is bounded by Balsam Avenue on the west, East C Street / WCR 62 to the north, WCR 43 to the east, and private property on the south. State Highway 263 (8th Street) is less than a quarter of a mile south of the subject property. The proposed mining operation will extract gravel reserves from locations adjacent to man-made structures. The rules and regulations of the Division of Reclamation, Mining, and Safety (DRMS)require that any mining within a 200 foot setback of a man-made structure show thorough engineering analysis that the proposed mining will not cause damage. The accepted method of demonstrating this is through a slope stability analysis. This report contains an overview of the prior geotechnical investigation results by Terracon and Two Rivers Testing, and the methodology used in the analysis of the mining slopes and their estimated affects on all man-made structures. Recommendations regarding acceptable setbacks from man-made structures have also been included. OVERVIEW The DRMS mining plan proposes that the property will be mined in 7 phases in 2 cells. The reclamation plan, Exhibits E and F, propose the future use for this property to be a slurry wall lined water storage reservoirs (2 cells). The mining will occur at 3H:1V slopes. Concurrent reclamation is planned such that the reclamation embankment will be constructed as the mining progresses. The reservoir cells will cover an estimated 68 surface acres when full. Actual surface area will depend on the final configuration of the reservoir after reclamation is complete. GEOTECHNICAL DATA Preliminary geotechnical investigations have been performed by Terracon and Two Rivers Testing. J&T Consulting, Inc. (JT) estimated soil strength parameters based on the information from the geotechnical investigations, which was provided to JT by Darwin Derr, and other stability analyses that have been performed on gravel mining operations along the front range. Table 1, on the following page, represents a summary of the soil strength parameters that were used in this stability analysis. J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 1 Table 1 - Soil Properties Description Max dry density (pcf) Saturated Density (pcf) Cohesion (psf) Internal Friction Angle Overburden 110 131 150 22 Sand and Gravel 110 125 0 35 Weathered Bedrock 125 141 100 18 Stable Bedrock 125 141 200O 20 Slurry Wall 100 110 0 45 DESIGN ANALYSIS AND CRITERIA The proposed mining slopes were analyzed using Clover Technologies Galena Slope Stability Analysis System, version 7.0. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. For this project, five cases were identified as critical during the mining operation. Static and pseudo -static conditions were analyzed in each case. Pseudo -static peak acceleration factors (peak horizontal acceleration, or PHA) were taken from USGS information for the western United States. The 2% probability of exceedance in 50 years (the most conservative) was used. A peak acceleration factor of 0.10 x gravity was taken from this data. A conservative earthquake loading coefficient of 0.50 x PHA is often used for slope stability analyses (50% of PHA). We used an even more conservative approach and used 70% of the PHA for this area for our earthquake loading coefficient. Hence, 0.70 x 0.10 = 0.07. All mining side slopes will be 3H:1 V. Case 1 — West Property Line. The mining operation is adjacent to Balsam Avenue and numerous utilities and structures on the west side of the site. The mining depth was assumed to be 70 feet in this area based on bore log information in the geotechnical reports. The proposed mining setback was set 200 feet from the existing ROW. Case 2 — Proposed Oil/Gas Well in Northwest Corner of Site. The mining operation is adjacent to proposed oil/gas wells in the northwest corner of the site. The mining depth was assumed to be 72 feet in this area based on bore log information in the geotechnical reports. Mining activities will maintain a 200 foot setback from the wells until they are completed. After they are completed the proposed mining setback was set 100 feet from the wells. Case 3 — North Property Line. The mining operation is adjacent to East C Street/WCR 62 and numerous utilities and structures on the north side of the site. JT J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 2 The mining depth was assumed to be 70 feet in this area based on bore log information in the geotechnical reports. The proposed mining setback was set 200 feet from the existing ROW. Case 4 — East Property Line. The mining operation is adjacent to WCR and numerous utilities and structures on the east side of the site. The mining depth was assumed to be 64 feet in this area based on bore log information in the geotechnical reports. The proposed mining setback was set 200 feet from the existing ROW. Case 4 — South Property Line. The mining operation is adjacent to private property with a building, and an existing oil/gas well on the south side of the site. The mining depth was assumed to be 52 feet in this area based on bore log information in the geotechnical reports. The proposed mining setback was set 100 feet from the property line, and 150 feet from the building and oil/gas well. The cross -sections located in Appendix B show the estimated phreatic surface associated with each case as well as the geometry used in the mining/reclamation. METHODOLOGY The mining embankment configuration shown in the computer analysis represents the estimated conditions for this site. If mining conditions differ from the estimated conditions, the slope stability will need to be re-evaluated on a case by case basis. The Bishop Method was used in the computer analysis for determining safety factors. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 8,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the Colorado State Engineer's Office (SEO) in evaluating embankment dams, and industry accepted standards for the evaluation of temporary structures during construction. SLOPE STABILITY RESULTS The SEO requires minimum safety factors of 1.3 for static condition analyses and 1.0 for pseudo -static (earthquake loading) condition analyses for Class I (high hazard) embankment dams. This design criteria was used to establish the desired minimum safety factors for this project and should be considered as highly conservative for evaluating alluvial mining slopes. The calculated factors of safety are within the design criteria specified for this project and can be considered indicators of the mining slope performance under the various conditions. The results of the static condition and pseudo -static condition slope stability analyses are presented in Table 2 and Table 3. JT J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 3 Table 2 - Static Condition Slope Stability Analysis Results Description Calculated Factor Of Safety Required Minimum Factor Of Safety Case 1 — West Property Line 2.55 1.3 Case 1 — West Property Line Full Reservoir 3.64 Case 2 - Proposed Oil/Gas Wells 2.00 1.3 Case 2 — Proposed Oil/Gas Wells Full Reservoir 2.64 Case 3 - North Property Line 2.55 1.3 Case 3 — North Property Line Full Reservoir 3.64 Case 4 - East Property Line 2.63 1.3 Case 4 - East Property Line Full Reservoir 3.69 Case 5 — South Property Line 2.26 1.3 Case 5 - South Property Line Full Reservoir 3.71 Table 3 - Pseudo -Static Condition Slope Stability Analysis Results Description Calculated Factor Of Safety Required Minimum Factor Of Safety Case 1 EQ — West Property Line 1.76 1.0 Case 1 EQ — West Property Line Full Reservoir 2.00 Case 2 EQ — Proposed Oil/Gas Wells 1.52 1.0 Case 2 EQ — Proposed Oil/Gas Wells Full Reservoir 1.66 Case 3 EQ - North Property Line 1.76 1.0 Case 3 EQ — North Property Line Full Reservoir 2.00 Case 4 EQ - East Property Line 1.80 1.0 Case 4 EQ — East Property Line Full Reservoir 2.01 Case 5 EQ — South Property Line 1.53 Case 5 EQ — South Property Line Full Reservoir 2.02 J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 4 CONCLUSIONS AND RECOMMENDATIONS Case 1 — The resulting safety factor of 2.55 exceeds the SEO minimum requirement of 1.30 for an embankment during construction. The resulting safety factor of 1.76 is above the SEO minimum requirement of 1.0 for an embankment subject to earthquake loading. Using a normal water surface elevation in the reservoir provides greater safety factors, 3.64 under static loading and 2.00 under earthquake loads. The proposed setback of 200 feet from the ROW is satisfactory. Case 2 — The resulting safety factor of 2.00 exceeds the SEO minimum requirement of 1.30 for an embankment during construction. The resulting safety factor of 1.52 is above the SEO minimum requirement of 1.0 for an embankment subject to earthquake loading. Using a normal water surface elevation in the reservoir provides greater safety factors, 2.64 under static loading and 1.66 under earthquake loads. The proposed setback of 100 feet from the oil/gas wells is satisfactory. Case 3 — The resulting safety factor of 2.55 exceeds the SEO minimum requirement of 1.30 for an embankment during construction. The resulting safety factor of 1.76 is above the SEO minimum requirement of 1.0 for an embankment subject to earthquake loading. Using a normal water surface elevation in the reservoir provides greater safety factors, 3.64 under static loading and 2.00 under earthquake loads. The proposed setback of 200 feet from the ROW is satisfactory. Case 4 — The resulting safety factor of 2.63 exceeds the SEO minimum requirement of 1.30 for an embankment during construction. The resulting safety factor of 1.80 is above the SEO minimum requirement of 1.0 for an embankment subject to earthquake loading. Using a normal water surface elevation in the reservoir provides greater safety factors, 3.69 under static loading and 2.01 under earthquake loads. The proposed setback of 200 feet from the ROW is satisfactory. Case 5 — The resulting safety factor of 2.26 exceeds the SEO minimum requirement of 1.30 for an embankment during construction. The resulting safety factor of 1.53 is above the SEO minimum requirement of 1.0 for an embankment subject to earthquake loading. Using a normal water surface elevation in the reservoir provides greater safety factors, 3.71 under static loading and 2.02 under earthquake loads. The proposed setback of 100 feet from the property line and 150 feet from the building and oil/gas well is satisfactory. J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 5 The following recommendations for monitoring of slope stability should be followed: 1. A visual inspection of the excavated slopes should be done on a weekly basis for the first 6 months of mining. This inspection should consist of walking the existing ground and looking for any signs of stress cracks or other potential signs of slope failure. Some minor sloughing of slopes is expected on any mine site. The intent of this inspection is to locate potential major slope failures that could potentially extend back into a structure. 2. A visual inspection should be done after a major precipitation event that has saturated the ground using the same procedures. A major precipitation event would be defined as a storm that produces an intensity level reached once in 50 years on the average. 3. If a visual inspection detects signs of a potential slope failure, qualified personnel should be contacted to evaluate and recommend remediation work to stabilize the area. 4. If no visible signs of slope failure are detected within the first 6 months, then the inspection period could be reduced to once per month or after every major precipitation event. J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Amendment Slope Stability Analysis Page 6 APPENDIX A J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Project Slope Stability Analysis LEGEND: 2 co c0 a, O N a, O J a) o_ co 0 1- s a) O O B) B) O) C n3 ❑ lU la a) N 0 0 t • \ J OO _fitI,STCSTREET p�W I 1 \ it \`4g68_ti \ \` _.---46.1.1)--- 4620 4630 4640 4650 4660 C _ w _ C meavessea 150 75 150 UTILITY POLE GUY WIRE GAS LINE MARKER GAS VALVE WELL WATER METER WATER FAUCET WATER LINE MARKER ELECTRIC TRANSFORMER TREE TELEPHONE PEDESTAL TELEPHONE LINE MARKER PROPERTY LINE FENCE LINE OVERHEAD ELECTRIC LINE EXISTING DUKE GAS UNDERGROUND WATER LINE EXISTING CHAIN LINK FENCE EXISTING CONTOURS (2' INTERVALS) GRAVEL ROAD PROPOSED PERMIT BOUNDARY PROPOSED FINAL MINING LIMIT PROPOSED INTERIM MINING LIMIT PROPOSED SLURRY WALL PHASE 1A -1C LIMIT SLOPE STABILITY CASE LOCATION 300 450 SCALE IN FEET Slope Stability Case Location Map Broken Arrow Investments 4. Q. d C M-2008.017 REVISIONS 0 O z Job # Date Drawn BY Designed BY Checked BY File JT-2018 Slope stab Sale 07123 2/7/18 WSS TPY JCY 1"= 150' Sheet: 00 1 1 APPENDIX B JT J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Project Slope Stability Analysis Material Keys 1: Overburden 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 1 r r r wimps Gloom" ..r .r r 1 150 ft r r r r __.PRIMNESS r r CCS 5-d cri -r 1 ri -r1 o CO o C.) OO CCS W C� � 50 ;star MS SNIP — a - IMPRIMISw - .--...• • w.Aw - 100 150 200 250 300 350 400 450 500 550 600 650 700 GALENA Version 7.1 Licensed to: J & T Consulting 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.55 Project Derr Pit Amendment Case 1 - West Side File: P:\07123 Derr Gravel Pit\Slope Stability\GalenalDerr 1.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. V 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 SIOSOS O act °a Q) U U U) N C ( a) CD W C= 150 ft al._ 50 fJulia _ ate. - a- - I I I 100 150 200 250 300 350 400 450 500 550 600 650 700 GALENA Version 7.1 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 3.64 Project Derr Pit Amendment Case 1 - West Side - Full File: P:107123 Derr Gravel Pit\Slope Stability\Galena\Derr 1 Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 J7' Consulting., Inc. Material Keys 1: Overburden 2: Sand and Gravel 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 0.070 •j 4.0,06 j sae de SWISS - - • - i - ----- -a - �sadd - I•CISl. - 1 00100. erl -I o co U U Cl) U) C O C W CD EN 150ft i 50 ft nrigiE• -'"-ate . -- - - - •_•_y '! _ r egos swain 1 INNISSI de a ad La 100 150 GALENA Version 7.1 200 250 300 350 400 450 500 550 600 650 700 Licensed to: J & T Consulting 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 1 - West Side - Pseudostatic File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 1 EQ.gmf 1.76 Edited: 7 Jun 2018 Processed: 7 Jun 2018 Uill J&T Consulting, Inc. 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 0.070 1- ewer ri as co ▪ .-i o a) L.)cn O tt1 r Q) C7 W Cx 150 ft +,,s2:22:10tinjinLieLei 100 150 200 250 300 350 400 450 500 550 600 650 700 GALENA Version 7.1 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.00 Project Derr Pit Amendment Case 1 - West Side - Pseudostatic - Full File: P:\07123 Derr Gravel Pit\Slope StabilitylGalenalDerr 1 EQ Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 II • uI J7' Consulting, Inc. 4800 4750 4700 4650 4600 4550 4500 4450 150 200 250 300 350 400 450 500 550 100 GALENA version 7.1 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.00 Project Derr Pit Amendment Case 2 - NW Oil/Gas Wells File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 �' J&T Consulting, Inc. 4800 4750 4700 4650 4600 4550 4500 4450 100 150 GALENA version 7.I ommam INNEEENEE. ern 100 ft 200 250 300 350 400 450 500 550 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.64 Project Derr Pit Amendment Case 2 - NW Oil/Gas Wells - Full File: P:107123 Derr Gravel Pit\Slope Stability\GalenalDerr 2 Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 NIJecT Consulting, Inc. 4800 4750 4700 4650 4600 4550 4500 4450 0.070 ♦� 1 .44.44040 1 eras .r • i weasen 1 _.._ llommoni r 1 Ine r r 1 100 ft SO IMIPPIPPI A rf U) 0 0 -- 100 150 GALENA Version 7.1 200 250 300 350 400 450 500 550 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 2 - NW Oil/Gas Wells - Pseudostatic File: P:\07123 Derr Gravel Pit\Slope StabilitylGalena\Derr 2 EQ.gmf 1.52 Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. Material Keys 1: Overburden 2: Sand and Gravel 4800 4750 4700 4650 4600 4550 4500 4450 0.070 ♦� W.■ n�lw:.►„ w+ �■ ��■ mow.■ �■w_��■_ amo mom mm i.w iq mat volor w,..F ek-aae•;,.i'nc=' :t(fast' 0.'r -hvvicer$4' ••' ow emoo• ow simmer Si ,11011110 OP 'AS 4BOalianinioxwaN 100 ft ..e •sae s we 'sr ass •'is .. �1�-'�,.'wv-» N" a" via • IMMO • rC 0 0 011111•00 NIMIINEMP 150 200 250 300 350 400 450 500 100 GALENA Version 7.1 550 Licensed to: J & T Consulting 3: Weathered Bedrock 4: Stable Bedrock Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 2 - NW Oil/Gas Wells - Pseudostatic - Full File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2 EQ Full.gmf 1.66 Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. 4900 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 200 300 400 500 600 700 100 GALENA Version 7.1 WWIWINOWS aw OIR ) 1 0 Elec/Phone/Gas 1-4 CD 150 ft 50 ft ejanojp.mjimumiummwelpe - Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.55 Project Derr Pit Amendment Case 3 - North Side File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 ji; J&T Consulting, Inc. Material Keys 1: Overburden 4900 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 200 300 400 500 600 700 100 GALENA version 7.1 Iliantat [S ; CJ ) 150 ft Of 0 Elec/Phone/Gas a All Licensed to: J & T Consulting 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 3.64 Project Derr Pit Amendment Case 3 - North Side - Full File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. Material Keys 4900 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 0.070 r room ___. - — ass N Sada ▪ aaasief r Cd 1-4 D 150 ft moose IN MIS - 411•I — - -- - wows eersaSemiludialue▪ vas. rale a- Isaa anal. _amna O (24 Elec/Phone/Gas 50 ft istrilimjempimplum 500 600 700 100 GALENA Version 7.1 200 300 400 Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Ail Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 3 - North Side - Pseudostatic File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 EQ.gmf 1,76 Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. 4900 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 r_ 0.070 200 300 400 500 600 700 100 GALENA Version 7.1 liana,. WV 150 ft 50 ft eelee aselare 0 cC Elec/Phone/Gas tzsi C) w Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel M>YF TIC'S -<<T 3: Weathered Bedrock 4: Stable Bedrock OS" angln 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.00 Project Derr Pit Amendment Case 3 - North Side - Pseudostatic - Full Fife: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 EQ Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 aI la Consulting, Inc. Material Keys 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 . r Jra•g.- T 150 ft - . _ v] � co 0 c4 — ._.: —�.... - •••••••• —.. �..-. 0. ecs - CYO 1 j 100 GALENA Version 7.1 200 300 400 500 600 700 Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Vultiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.63 Project Derr Pit Amendment Case 4 - East Side File: P:\07123 Derr Gravel Pit\Slope Stability\GalenalDerr 4.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 LIill Consulting, Inc. 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 co a3C.9 CC 150 ft 40 ft a) ..o r1 w 11-1 C) U C N -ri co 200 300 400 500 600 700 100 GALENA Version 7.1 •INN•al nine •0440000 10 .4)1041444410 44. C- 404 00000001 40 101110MIND I/0 OD 0414100100 RS IA'S Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 3.69 Project Derr Pit Amendment Case 4 - East Side - Full File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4 Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 s I J&T Consulting, Inc. 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 200 300 400 500 600 700 100 GALENA Version I.1 Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3. Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 4 - East Side - Pseudostatic File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4 EQ.gmf 1.80 Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. Material Keys 4850 4800 4750 4700 4650 4600 4550 4500 4450 4400 0.070 4 - 200 300 400 500 600 700 100 GALENA Version 7.1 150 ft rH U) cn O W c2G 40 ft itenipseAngirimiwimpwpqm U C Cl) w 0-, C -rl 0 - Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.01 Project Derr Pit Amendment Case 4 - East Side - Pseudostatic - Full Fife: P:\07123 Derr Gravel Pit\Slope StabilitylGalenalDerr 4 EQ Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 LIJill Consulting, Inc. 4800 4750 4700 4650 woes oses 4600 4550 4500 - S 150 200 250 300 350 I 100 GALENA Version 7.1 I • lelna• •4.1110 a S. wee aloe 50 ft ta- a �-� a • — -.++ A-=��iarr.dC — - ea le • .dOa.r.'..r• — at •..w a w a .n= • •� i 1 • adaill- a — - — • — • 11 400 110 ft -� • aglow% a Magnin • aasia, • AMNON. I 450 Building/Oil/Gas Well stria. - - - - — • — - w • le • -s a et • I 500 Else Licensed to: J & T Consulting Material Keys 1: Overburden 2: Sand and Gravel 3. Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.26 Project Derr Pit Amendment Case 5 - SE Building & Oil/Gas Well Fi/e: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 J& 1' Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 or — a — - rH rf 50 ft 110 ft - - - L' - - - Building/Oil/Gas Well w a a TT 150 200 250 300 350 400 450 500 100 GALENA version 7.1 Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 3.71 Project Derr Pit Amendment Case 5 - SE Building & Oil/Gas Well - Full File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 SIJ&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 0.070 4- 50 ft _ _ 110 ft -i i 1 100 GALENA version 7.1 150 200 250 300 350 400 450 500 Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Derr Pit Amendment Case 5 - SE Building & Oil/Gas Well - Pseudostatic File: P:107123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 EQ.gmf 1.53 Edited: 7 Jun 2018 Processed: 7 Jun 2018 J&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 1 1 t 100 GALENA Version 7.'1 150 0.070 200 250 300 350 Cr.) 50 ft 110 ft 400 • ww.. a a • ..w• • e. a ..w.. • as • we • awn a 450 500 Licensed to: J & T Consulting 1: Overburden 2: Sand and Gravel 3: Weathered Bedrock 4: Stable Bedrock 5: Slurry Wall Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.02 Project Derr Pit Amendment Case 5 - SE Building & Oil/Gas Well - Pseudostatic - Full File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 EQ Full.gmf Edited: 7 Jun 2018 Processed: 7 Jun 2018 1I. J&T Consulting, Inc. 141 APPENDIX C JT J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Project Slope Stability Analysis GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr l.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr l.gmf Processed: 07 Jun 2018 17:46:06 DATA: Analysis 1 - Case 1 - West Side Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight, Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4663.00 Profile: 2 (2 points) 561.00 4666.00 Profile: 3 (3 points) 200.00 4596.00 Profile: 4 (2 points) 558.00 4666.00 Profile: 5 (2 points) 561.00 4663.00 Profile: 6 (3 points) 100.00 4596.00 Profile: 7 (2 points) 561.00 4596.00 Profile: 8 (7 points) 100.00 4593.00 561.00 4593.00 Slope Surface (6 points) 100.00 4596.00 700.00 4666.00 Material beneath: 1 - Overburden 410.00 4666.00 558.00 Material beneath: 1 - Overburden 700.00 4666.00 Material beneath: 2 - Sand and Gravel 401.00 4663.00 558.00 Material beneath: 5 - Slurry Wall 561.00 4666.00 Material beneath: 2 - Sand and Gravel 700.00 4663.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 558.00 Material beneath: 3 - Weathered Bedrock 700.00 4596.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 558.00 700.00 4593.00 Phreatic Surface (5 points) 4666.00 4663.00 4596.00 4593.00 200.00 4596.00 410.00 4666.00 Page 1 558.01 4590.00 558.00 4666.00 560.99 4590.00 561.00 4666.00 Derr l.gar 100.00 Failure Surface 4596.00 200.00 4596.00 558.00 4663.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 620.00 YR: Centre: XC: 300.37 YC: 5288.77 Radius: R: Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 1 West Side Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 3.237 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.55 Results Summary - Lowest 99 Factor of Safety circles 561.00 4663.00 4666.00 700.00 700.00 4663.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4598.63 610.00 4666.00 296.93 5300.90 707.89 2.545 <-- Critical Surface 2 206.84 4598.28 610.00 4666.00 293.42 5316.77 723.68 2.553 3 205.79 4597.93 611.05 4666.00 290.75 5332.51 739.47 2.556 4 210.00 4599.33 613.16 4666.00 303.70 5285.07 692.11 2.559 5 205.79 4597.93 610.00 4666.00 289.90 5332.60 739.47 2.562 6 204.74 4597.58 611.05 4666.00 287.24 5348.32 755.26 2.564 7 203.68 4597.23 612.11 4666.00 284.57 5364.03 771.05 2.564 8 210.00 4599.33 612.11 4666.00 302.87 5285.18 692.11 2.565 9 208.95 4598.98 613.16 4666.00 300.22 5300.97 707.89 2.568 10 206.84 4598.28 611.05 4666.00 294.27 5316.67 723.68 2.568 11 202.63 4596.88 612.11 4666.00 281.04 5379.80 786.84 2.569 12 204.74 4597.58 610.00 4666.00 286.38 5348.42 755.26 2.569 13 203.68 4597.23 611.05 4666.00 283.71 5364.12 771.05 2.570 14 210.00 4599.33 611.05 4666.00 302.04 5285.29 692.11 2.570 15 206.84 4598.28 615.26 4666.00 294.93 5332.49 739.47 2.571 16 202.63 4596.88 611.05 4666.00 280.17 5379.89 786.84 2.574 17 207.89 4598.63 613.16 4666.00 296.73 5316.84 723.68 2.574 18 203.68 4597.23 610.00 4666.00 282.85 5364.21 771.05 2.575 19 204.74 4597.58 612.11 4666.00 288.09 5348.23 755.26 2.575 20 207.89 4598.63 614.21 4666.00 297.57 5316.74 723.68 2.576 21 206.84 4598.28 614.21 4666.00 294.09 5332.59 739.47 2.577 22 201.58 4596.53 611.05 4666.00 276.63 5395.64 802.63 2.577 23 202.63 4596.88 610.00 4666.00 279.30 5379.97 786.84 2.578 Page 2 Derr 1.gar 24 208.95 4598.98 612.11 4666.00 299.39 5301.08 707.89 2.578 25 208.95 4598.98 611.05 4666.00 298.55 5301.18 707.89 2.579 26 205.79 4597.93 615.26 4666.00 291.44 5348.32 755.26 2.579 27 204.74 4597.58 616.32 4666.00 288.80 5364.04 771.05 2.580 28 210.00 4599.33 610.0O 4666.00 301.21 5285.40 692.11 2.581 29 201.58 4596.53 610.00 4666.00 275.75 5395.72 802.63 2.581 30 207.89 4598.63 612.11 4666.00 295.89 5316.95 723.68 2.582 31 200.53 4596.18 610.00 4666.00 272.19 5411.45 818.42 2.583 32 206.84 4598.28 613.16 4666.00 293.24 5332.69 739.47 2.583 33 208.95 4598.98 614.21 4666.00 301.05 5300.86 707.89 2.585 34 205.79 4597.93 614.21 4666.00 290.59 5348.42 755.26 2.585 35 203.68 4597.23 616.32 4666.00 285.30 5379.83 786.84 2.585 36 204.74 4597.58 615.26 4666.00 287.94 5364.13 771.05 2.586 37 208.95 4598.98 610.00 4666.00 297.71 5301.29 707.89 2.587 38 210.00 4599.33 617.37 4666.00 304.32 5300.92 707.89 2.587 39 208.95 4598.98 618.42 4666.00 301.70 5316.70 723.68 2.588 40 207.89 4598.63 619.47 4666.00 299.08 5332.46 739.47 2.588 41 202.63 4596.88 616.32 4666.00 281.79 5395.60 802.63 2.589 42 207.89 4598.63 611.05 4666.00 295.05 5317.05 723.68 2.589 43 206.84 4598.28 612.11 4666.00 292.40 5332.79 739.47 2.590 44 203.68 4597.23 615.26 4666.00 284.44 5379.92 786.84 2.590 45 210.00 4599.33 616.32 4666.00 303.50 5301.03 707.89 2.591 46 198.42 4596.00 610.00 4666.00 268.79 5427.24 834.21 2.591 47 204.74 4597.58 614.21 4666.00 287.09 5364.22 771.05 2.591 48 205.79 4597.93 613.16 4666.00 289.74 5348.51 755.26 2.591 49 206.84 4598.28 619.47 4666.00 295.62 5348.31 755.26 2.593 50 199.47 4596.00 611.05 4666.00 269.84 5427.24 834.21 2.594 51 202.63 4596.68 615.26 4666.00 280.92 5395.68 802.63 2.594 52 208.95 4598.98 617.37 4666.00 300.87 5316.81 723.68 2.595 53 203.68 4597.23 614.21 4666.00 283.58 5380.00 786.84 2.595 54 206.84 4598.28 611.05 4666.00 291.55 5332.89 739.47 2.596 55 210.00 4599.33 615.26 4666.00 302.67 5301.14 707.89 2.596 56 201.58 4596.53 615.26 4666.00 277.40 5411.43 818.42 2.596 57 207.89 4598.63 610.00 4666.00 294.21 5317.15 723.68 2.596 58 204.74 4597.58 613.16 4666.00 286.23 5364.31 771.05 2.597 59 199.47 4596.00 610.00 4666.00 268.96 5427.31 834.21 2.597 60 205.79 4597.93 612.11 4666.00 288.89 5348.61 755.26 2.597 61 202.63 4596.88 614.21 4666.00 280.06 5395.77 802.63 2.598 62 207.89 4598.63 618.42 4666.00 298.24 5332.56 739.47 2.598 63 207.89 4598.63 617.37 4666.00 297.41 5332.67 739.47 2.599 64 194.21 4596.00 610.00 4666.00 265.40 5443.01 850.00 2.599 65 208.95 4598.98 616.32 4666.00 300.04 5316.91 723.68 2.600 66 203.68 4597.23 613.16 4666.00 282.71 5380.09 786.84 2.600 67 201.58 4596.53 614.21 4666.00 276.53 5411.51 818.42 2.600 68 204.74 4597.58 620.53 4666.00 289.54 5379.84 786.84 2.601 69 204.74 4597.58 612.11 4666.00 285.37 5364.40 771.05 2.602 70 200.53 4596.18 614.21 4666.00 272.99 5427.23 834.21 2.602 71 205.79 4597.93 619.47 4666.00 292.16 5364.13 771.05 2.602 72 195.26 4596.00 611.05 4666.00 266.45 5443.01 850.00 2.602 73 206.84 4598.28 618.42 4666.00 294.78 5348.41 755.26 2.602 74 210.00 4599.33 614.21 4666.0O 301.84 5301.25 707.89 2.602 75 202.63 4596.88 613.16 4666.00 279.19 5395.85 802.63 2.602 76 205.79 4597.93 611.05 4666.00 288.03 5348.70 755.26 2.603 77 206.84 4598.28 610.00 4666.00 290.70 5332.98 739.47 2.603 78 201.58 4596.53 613.16 4666.00 275.65 5411.59 818.42 2.604 79 196.32 4596.00 612.11 4666.00 267.50 5443.01 850.00 2.604 Page 3 Derr 1.gar 80 208.95 4598.98 615.26 4666.00 299.20 5317.02 723.68 2.605 81 203.68 4597.23 612.11 4666.00 281.85 5380.18 786.84 2.605 82 210.00 4599.33 622.63 4666.00 305.81 5316.65 723.68 2.605 83 200.53 4596.18 613.16 4666.00 272.11 5427.31 834.21 2.605 84 195.26 4596.00 610.00 4666.00 265.57 5443.09 850.00 2.605 85 203.68 4597.23 620.53 4666.00 286.06 5395.62 802.63 2.606 86 202.63 4596.88 612.11 4666.00 278.31 5395.93 802.63 2.606 87 204.74 4597.58 611.05 4666.00 284.51 5364.49 771.05 2.607 88 207.89 4598.63 616.32 4666.00 296.57 5332.77 739.47 2.607 89 206.84 4598.28 617.37 4666.00 293.94 5348.51 755.26 2.607 90 197.37 4596.00 613.16 4666.00 268.56 5443.01 850.00 2.607 91 201.58 4596.53 612.11 4666.00 274.77 5411.67 818.42 2.607 92 196.32 4596.00 611.05 4666.00 266.62 5443.09 850.00 2.608 93 204.74 4597.58 619.47 4666.00 288.68 5379.93 786.84 2.608 94 205.79 4597.93 610.00 4666.00 287.18 5348.79 755.26 2.608 95 200.53 4596.18 612.11 4666.00 271.22 5427.38 834.21 2.608 96 203.68 4597.23 611.05 4666.00 280.98 5380.26 786.84 2.609 97 210.00 4599.33 621.58 4666.00 304.98 5316.76 723.68 2.609 98 205.79 4597.93 616.32 4666.00 292.29 5348.22 755.26 2.609 99 202.63 4596.88 620.53 4666.00 282.57 5411.38 818.42 2.609 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4598.63 XR: 610.00 YR: 4666.00 Centre: XC: 296.93 YC: 5300.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4598.63 229.53 4596.23 251.22 4594.49 272.96 4593.42 294.72 4593.01 316.49 4593.28 338.24 4594.22 359.94 4595.82 381.59 4598.09 403.16 4601.02 424.62 4604.62 445.97 4608.88 467.17 4613.79 488.22 4619.34 509.08 4625.55 529.74 4632.39 550.19 4639.86 570.39 4647.96 590.33 4656.68 610.00 4666.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 44 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 3.33 -6.3 3.87 3.89 2 0.00 35.0 415.70 0.00 110.88 1.04 2 211.76 32.81 -6.3 8.88 8.94 2 0.00 35.0 4101.35 739.04 473.69 1.04 3 220.64 67.88 -6.3 8.88 8.94 2 0.00 35.0 8485.16 2216.86 977.58 1.04 4 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 1002.18 1295.66 1.03 5 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 4322.11 1612.77 1.01 6 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 5812.45 2116.21 1.01 7 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 8410.39 2625.53 1.01 8 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 10155.18 3156.19 1.01 9 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 11787.94 3652.17 1.00 10 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 13307.27 4134.77 1.00 11 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 14713.44 4579.76 1.00 12 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 16006.32 5013.97 1.00 13 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 17184.25 5408.09 1.00 14 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 18248.23 5793.51 1.00 15 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 19197.54 6136.81 0.99 16 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 20032.53 6473.52 0.99 17 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 3262.05 6644.99 0.99 18 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 19167.69 6739.00 0.98 19 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 19679.82 7016.94 0.98 20 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 19646.09 7229.07 0.97 21 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 19948.88 7460.94 0.97 Page 4 Derr 1 gar 22 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 4471.75 7604.52 0.97 23 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 14317.99 7660.81 0.97 24 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 15358.25 7662.42 0.97 25 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 15424.53 7516.33 0.97 26 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 22649.49 7272.74 0.97 27 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 22560.57 7020.15 0.97 28 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 22357.02 6708.63 0.96 29 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 22037.64 6418.48 0.96 30 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 21602.94 6074.02 0.96 31 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 21052.78 5746.72 0.96 32 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 20387.38 5370.16 0.96 33 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 19607.24 5006.46 0.96 34 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 18712.55 4598.63 0.97 35 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 17702.52 4198.96 0.97 36 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 16577.44 3760.93 0.97 37 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 15339.30 3326.09 0.97 38 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 10948.52 2911.84 0.97 39 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2293.94 0.93 40 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2363.98 0.97 41 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1872.10 0.97 42 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1356.62 0.97 43 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 720.08 0.98 44 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 156.76 1.03 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869065.50 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 1 Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 1 Full.gmf Processed: 07 Jun 2018 17:46:16 DATA: Analysis 1 - Case 1 - West Side - Full Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4(Mohr-Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4663.00 Profile: 2 (2 points) 561.00 4666.00 Profile: 3 (3 points) 200.00 4596.00 Profile: 4 (2 points) 558.00 4666.00 Profile: 5 (2 points) 561.00 4663.00 Profile: 6 (3 points) 100.00 4596.00 Profile: 7 (2 points) 561.00 4596.00 Profile: 8 (7 points) 100.00 4593.00 561.00 4593.00 Slope Surface (6 points) 100.00 700.00 4596.00 4666.00 Material beneath: 1 - Overburden 410.00 4666.00 558.00 4666.00 Material beneath: 1 - Overburden 700.00 4666.00 Material beneath: 2 - Sand and Gravel 401.00 4663.00 558.00 4663.00 Material beneath: 5 - Slurry Wall 561.00 4666.00 Material beneath: 2 - Sand and Gravel 700.00 4663.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 558.00 4596.00 Material beneath: 3 - Weathered Bedrock 700.00 4596.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 558.00 4593.00 700.00 4593.00 Phreatic Surface (2 points) 200.00 4596.00 410.00 4666.00 558.01 4590.00 558.00 4666.00 560.99 4590.00 561.00 4666.00 Page 1 Derr 1 Full.gar 100.00 4663.00 Failure Surface 700.00 4663.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 620.00 YR: 4666.00 Centre: XC: 300.37 YC: 5288.77 Radius: R: 700.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 1 - West Side - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 5.155 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 3.64 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4598.63 610.00 4666.00 296.93 5300.90 707.89 3.644 <-- Critical Surface 2 206.84 4598.28 610.00 4666.00 293.42 5316.77 723.68 3.648 3 205.79 4597.93 611.05 4666.00 290.75 5332.51 739.47 3.654 4 205.79 4597.93 610.00 4666.00 289.90 5332.60 739.47 3.655 5 204.74 4597.58 610.00 4666.00 286.38 5348.42 755.26 3.659 6 204.74 4597.58 611.05 4666.00 287.24 5348.32 755.26 3.659 7 200.53 4596.18 610.00 4666.00 272.19 5411.45 818.42 3.660 8 201.58 4596.53 610.00 4666.00 275.75 5395.72 802.63 3.660 9 203.68 4597.23 610.00 4666.00 282.85 5364.21 771.05 3.660 10 202.63 4596.88 610.00 4666.00 279.30 5379.97 786.84 3.661 11 203.68 4597.23 611.05 4666.00 283.71 5364.12 771.05 3.661 12 203.68 4597.23 612.11 4666.00 284.57 5364.03 771.05 3.662 13 202.63 4596.88 611.05 4666.00 280.17 5379.89 786.84 3.662 14 201.58 4596.53 611.05 4666.00 276.63 5395.64 802.63 3.662 15 202.63 4596.88 612.11 4666.00 281.04 5379.80 786.84 3.663 16 198.42 4596.00 610.00 4666.00 268.79 5427.24 834.21 3.665 17 199.47 4596.00 610.00 4666.00 268.96 5427.31 834.21 3.671 18 194.21 4596.00 610.00 4666.00 265.40 5443.01 850.00 3.672 19 199.47 4596.00 611.05 4666.00 269.84 5427.24 834.21 3.674 20 195.26 4596.00 610.00 4666.00 265.57 5443.09 850.00 3.678 21 195.26 4596.00 611.05 4666.00 266.45 5443.01 850.00 3.680 22 210.00 4599.33 611.05 4666.00 302.04 5285.29 692.11 3.683 23 196.32 4596.00 610.00 4666.00 265.73 5443.16 850.00 3.683 Page 2 Derr 1 Fu1l.gar 24 210.00 4599.33 612.11 4666.00 302.87 5285.18 692.11 3.683 25 210.00 4599.33 613.16 4666.00 303.70 5285.07 692.11 3.684 26 206.84 4598.28 611.05 4666.00 294.27 5316.67 723.68 3.684 27 196.32 4596.00 611.05 4666.00 266.62 5443.09 850.00 3.686 28 208.95 4598.98 611.05 4666.00 298.55 5301.18 707.89 3.687 29 208.95 4598.98 613.16 4666.00 300.22 5300.97 707.89 3.688 30 197.37 4596.00 610.00 4666.00 265.89 5443.23 850.00 3.689 31 210.00 4599.33 610.00 4666.00 301.21 5285.40 692.11 3.689 32 196.32 4596.00 612.11 4666.00 267.50 5443.01 850.00 3.689 33 200.53 4596.18 610.00 4666.00 269.45 5427.53 834.21 3.690 34 204.74 4597.58 612.11 4666.00 288.09 5348.23 755.26 3.690 35 208.95 4598.98 610.00 4666.00 297.71 5301.29 707.89 3.690 36 207.89 4598.63 613.16 4666.00 296.73 5316.84 723.68 3.691 37 197.37 4596.00 611.05 4666.00 266.78 5443.16 850.00 3.692 38 201.58 4596.53 610.00 4666.00 273.01 5411.82 818.42 3.692 39 200.53 4596.18 611.05 4666.00 270.34 5427.46 834.21 3.693 40 207.89 4598.63 612.11 4666.00 295.89 5316.95 723.68 3.693 41 198.42 4596.00 610.00 4666.00 266.06 5443.30 850.00 3.694 42 208.95 4598.98 612.11 4666.00 299.39 5301.08 707.89 3.694 43 207.89 4598.63 611.05 4666.00 295.05 5317.05 723.68 3.695 44 197.37 4596.00 612.11 4666.00 267.67 5443.09 850.00 3.695 45 206.84 4598.28 615.26 4666.00 294.93 5332.49 739.47 3.695 46 201.58 4596.53 611.05 4666.00 273.89 5411.75 818.42 3.695 47 202.63 4596.88 610.00 4666.00 276.57 5396.10 802.63 3.696 48 206.84 4598.28 614.21 4666.00 294.09 5332.59 739.47 3.696 49 200.53 4596.18 612.11 4666.00 271.22 5427.38 834.21 3.696 50 207.89 4598.63 610.00 4666.00 294.21 5317.15 723.68 3.697 51 206.84 4598.28 613.16 4666.00 293.24 5332.69 739.47 3.697 52 198.42 4596.00 611.05 4666.00 266.95 5443.23 850.00 3.697 53 206.84 4598.28 612.11 4666.00 292.40 5332.79 739.47 3.698 54 202.63 4596.88 611.05 4666.00 277.44 5396.01 802.63 3.698 55 197.37 4596.00 613.16 4666.00 268.56 5443.01 850.00 3.698 56 201.58 4596.53 612.11 4666.00 274.77 5411.67 818.42 3.698 57 206.84 4598.28 611.05 4666.00 291.55 5332.89 739.47 3.698 58 203.68 4597.23 610.00 4666.00 280.11 5380.35 786.84 3.698 59 200.53 4596.18 613.16 4666.00 272.11 5427.31 834.21 3.699 60 206.84 4598.28 610.00 4666.00 290.70 5332.98 739.47 3.700 61 205.79 4597.93 615.26 4666.00 291.44 5348.32 755.26 3.700 62 207.89 4598.63 614.21 4666.00 297.57 5316.74 723.68 3.700 63 202.63 4596.88 612.11 4666.00 278.31 5395.93 802.63 3.700 64 203.68 4597.23 611.05 4666.00 280.98 5380.26 786.84 3.700 65 204.74 4597.58 610.00 4666.00 283.65 5364.58 771.05 3.700 66 201.58 4596.53 613.16 4666.00 275.65 5411.59 818.42 3.701 67 198.42 4596.00 612.11 4666.00 267.84 5443.16 850.00 3.701 68 205.79 4597.93 610.00 4666.00 287.18 5348.79 755.26 3.701 69 205.79 4597.93 614.21 4666.00 290.59 5348.42 755.26 3.701 70 205.79 4597.93 613.16 4666.00 289.74 5348.51 755.26 3.702 71 200.53 4596.18 614.21 4666.00 272.99 5427.23 834.21 3.702 72 205.79 4597.93 611.05 4666.00 288.03 5348.70 755.26 3.702 73 205.79 4597.93 612.11 4666.00 288.89 5348.61 755.26 3.702 74 204.74 4597.58 611.05 4666.00 284.51 5364.49 771.05 3.702 75 203.68 4597.23 612.11 4666.00 281.85 5380.18 786.84 3.702 76 202.63 4596.88 613.16 4666.00 279.19 5395.85 802.63 3.702 77 204.74 4597.58 612.11 4666.00 285.37 5364.40 771.05 3.703 78 199.47 4596.00 611.05 4666.00 267.11 5443.30 850.00 3.703 79 201.58 4596.53 614.21 4666.00 276.53 5411.51 818.42 3.703 Page 3 Derr 1 Full.gar 80 199.47 4596.00 610.00 4666.00 266.22 5443.38 850.00 3.703 81 204.74 4597.58 613.16 4666.00 286.23 5364.31 771.05 3.704 82 203.68 4597.23 613.16 4666.00 282.71 5380.09 786.84 3.704 83 204.74 4597.58 616.32 4666.00 288.80 5364.04 771.05 3.704 84 204.74 4597.58 614.21 4666.00 287.09 5364.22 771.05 3.704 85 204.74 4597.58 615.26 4666.00 287.94 5364.13 771.05 3.704 86 198.42 4596.00 613.16 4666.00 268.72 5443.09 850.00 3.704 87 202.63 4596.88 614.21 4666.00 280.06 5395.77 802.63 3.704 88 203.68 4597.23 614.21 4666.00 283.58 5380.00 786.84 3.705 89 201.58 4596.53 615.26 4666.00 277.40 5411.43 818.42 3.705 90 203.68 4597.23 615.26 4666.00 284.44 5379.92 786.84 3.705 91 202.63 4596.88 615.26 4666.00 280.92 5395.68 802.63 3.706 92 203.68 4597.23 616.32 4666.00 285.30 5379.83 786.84 3.706 93 199.47 4596.00 612.11 4666.00 268.00 5443.23 850.00 3.707 94 202.63 4596.88 616.32 4666.00 281.79 5395.60 802.63 3.707 95 198.42 4596.00 614.21 4666.00 269.61 5443.01 850.00 3.707 96 199.47 4596.00 613.16 4666.00 268.89 5443.16 850.00 3.710 97 199.47 4596.00 614.21 4666.00 269.78 5443.09 850.00 3.713 98 199.47 4596.00 615.26 4666.00 270.66 5443.01 850.00 3.716 99 200.53 4596.18 610.00 4666.00 266.71 5443.59 850.00 3.721 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4598.63 XR: 610.00 YR: 4666.00 Centre: XC: 296.93 YC: 5300.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4598.63 229.53 4596.23 251.22 4594.49 272.96 4593.42 294.72 4593.01 316.49 4593.28 338.24 4594.22 359.94 4595.82 381.59 4598.09 403.16 4601.02 424.62 4604.62 445.97 4608.88 467.17 4613.79 488.22 4619.34 509.08 4625.55 529.74 4632.39 550.19 4639.86 570.39 4647.96 590.33 4656.68 610.00 4666.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 43 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 26.01 -6.3 10.82 10.88 2 0.00 35.0 3250.71 44121.15 4207.94 1.03 2 218.71 78.01 -6.3 10.82 10.88 2 0.00 35.0 9750.81 44937.53 4590.48 1.03 3 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 11808.22 4822.19 1.02 4 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 39808.55 5015.60 1.01 5 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 40255.58 5321.04 1.01 6 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 46708.78 5621.43 1.01 7 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 47072.07 5924.88 1.01 8 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 47322.51 6198.96 1.00 9 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 47459.12 6454.80 1.00 10 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 47482.78 6679.77 1.00 11 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 47392.59 6887.89 1.00 12 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 47187.72 7063.91 1.00 13 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 46869.51 7224.03 1.00 14 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 46438.39 7351.24 1.00 15 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 45894.05 7463.59 1.00 16 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 7250.45 7514.96 1.00 17 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 41552.21 7524.77 0.99 18 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 40899.08 7599.22 0.99 19 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 39270.70 7632.70 0.98 20 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 38463.15 7667.11 0.98 21 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 8433.12 7712.00 0.98 Page 4 Derr 1 Full.gar 22 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 26590.00 7791.36 0.98 23 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 27854.13 7790.24 0.98 24 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 27287.63 7639.45 0.98 25 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 38922.54 7410.58 0.98 26 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 37477.37 7149.50 0.98 27 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 35921.64 6847.29 0.98 28 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 34254.98 6547.07 0.98 29 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 32477.69 6207.55 0.98 30 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 30590.21 5868.54 0.98 31 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 28593.53 5492.50 0.99 32 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 26487.28 5115.38 0.99 33 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 24273.40 4703.54 0.99 34 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 21950.25 4288.74 0.99 35 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 19519.23 3842.07 0.99 36 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 16981.99 3390.31 0.99 37 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 11332.78 2964.86 1.00 38 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2340.28 0.97 39 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2404.37 1.00 40 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1907.86 1.01 41 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1384.25 1.01 42 590.33 82.2O 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 738.92 1.01 43 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 168.14 1.05 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869064.75 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 1 EQ.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 1 EQ.gmf Processed: 07 Jun 2018 17:46:24 DATA: Analysis 1 - Case 1 - West Side - Pseudostatic Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4663.00 Profile: 2 (2 points) 561.00 4666.00 Profile: 3 (3 points) 200.00 4596.00 Profile: 4 (2 points) 558.00 4666.00 Profile: 5 (2 points) 561.00 4663.00 Profile: 6 (3 points) 100.00 4596.00 Profile: 7 (2 points) 561.00 4596.00 Profile: 8 (7 points) 100.00 4593.00 561.00 4593.00 Slope Surface (6 points) 100.00 4596.00 700.00 4666.00 Material beneath: 1 — Overburden 410.00 4666.00 558.00 4666.00 Material beneath: 1 - Overburden 700.00 4666.00 Material beneath: 2 - Sand and Gravel 401.00 4663.00 558.00 4663.00 Material beneath: 5 - Slurry Wall 561.00 4666.00 Material beneath: 2 - Sand and Gravel 700.00 4663.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 558.00 4596.00 Material beneath: 3 - Weathered Bedrock 700.00 4596.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 558.00 4593.00 700.00 4593.00 Phreatic Surface (5 points) 200.00 4596.00 410.00 4666.00 558.01 4590.00 558.00 4666.00 560.99 4590.00 561.00 4666.00 Page 1 Derr 1 EQ.gar 100.00 4596.00 200.00 4596.00 558.00 4663.00 Failure Surface 561.00 4663.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 620.00 YR: 4666.00 Centre: XC: 300.37 YC: 5288.77 Radius: R: 700.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 1 - West Side - Pseudostatic Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.254 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 1.76 Results Summary - Lowest 99 Factor of Safety circles 700.00 4663.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4598.63 610.00 4666.00 296.93 5300.90 707.89 1.763 <-- Critical Surface 2 210.00 4599.33 613.16 4666.00 303.70 5285.07 692.11 1.764 3 210.00 4599.33 612.11 4666.00 302.87 5285.18 692.11 1.770 4 206.84 4598.28 610.00 4666.00 293.42 5316.77 723.68 1.770 5 208.95 4598.98 613.16 4666.00 300.22 5300.97 707.89 1.772 6 205.79 4597.93 611.05 4666.00 290.75 5332.51 739.47 1.772 7 206.84 4598.28 615.26 4666.00 294.93 5332.49 739.47 1.774 8 210.00 4599.33 611.05 4666.00 302.04 5285.29 692.11 1.775 9 210.00 4599.33 617.37 4666.0O 304.32 5300.92 707.89 1.776 10 208.95 4598.98 618.42 4666.00 301.70 5316.70 723.68 1.777 11 207.89 4598.63 619.47 4666.00 299.08 5332.46 739.47 1.777 12 207.89 4598.63 614.21 4666.00 297.57 5316.74 723.68 1.778 13 207.89 4598.63 613.16 4666.00 296.73 5316.84 723.68 1.778 14 205.79 4597.93 610.00 4666.00 289.90 5332.60 739.47 1.778 15 206.84 4598.28 611.05 4666.00 294.27 5316.67 723.68 1.779 16 204.74 4597.58 611.05 4666.00 287.24 5348.32 755.26 1.779 17 203.68 4597.23 612.11 4666.00 284.57 5364.03 771.05 1.780 18 206.84 4598.28 614.21 4666.00 294.09 5332.59 739.47 1.780 19 210.00 4599.33 622.63 4666.00 305.81 5316.65 723.68 1.780 Page 2 Derr 1 EQ.gar 20 210.00 4599.33 616.32 4666.00 303.50 5301.03 707.89 1.781 21 208.95 4598.98 612.11 4666.00 299.39 5301.08 707.89 1.781 22 205.79 4597.93 615.26 4666.00 291.44 5348.32 755.26 1.781 23 204.74 4597.58 616.32 4666.00 288.80 5364.04 771.05 1.782 24 208.95 4598.98 614.21 4666.00 301.05 5300.86 707.89 1.782 25 206.84 4598.28 619.47 4666.00 295.62 5348.31 755.26 1.783 26 208.95 4598.98 611.05 4666.00 298.55 5301.18 707.89 1.783 27 208.95 4598.98 617.37 4666.00 300.87 5316.81 723.68 1.784 28 202.63 4596.88 612.11 4666.00 281.04 5379.80 786.84 1.785 29 210.00 4599.33 610.00 4666.00 301.21 5285.40 692.11 1.785 30 203.68 4597.23 611.05 4666.00 283.71 5364.12 771.05 1.785 31 204.74 4597.58 610.00 4666.00 286.38 5348.42 755.26 1.785 32 210.00 4599.33 621.58 4666.00 304.98 5316.76 723.68 1.785 33 207.89 4598.63 612.11 4666.00 295.89 5316.95 723.68 1.786 34 204.74 4597.58 612.11 4666.00 288.09 5348.23 755.26 1.786 35 207.89 4598.63 618.42 4666.00 298.24 5332.56 739.47 1.786 36 206.84 4598.28 613.16 4666.00 293.24 5332.69 739.47 1.786 37 210.00 4599.33 615.26 4666.00 302.67 5301.14 707.89 1.787 38 208.95 4598.98 622.63 4666.00 302.38 5332.53 739.47 1.787 39 207.89 4598.63 623.68 4666.00 299.78 5348.28 755.26 1.787 40 203.68 4597.23 616.32 4666.00 285.30 5379.83 786.84 1.788 41 205.79 4597.93 614.21 4666.00 290.59 5348.42 755.26 1.788 42 204.74 4597.58 615.26 4666.00 287.94 5364.13 771.05 1.788 43 207.89 4598.63 617.37 4666.00 297.41 5332.67 739.47 1.789 44 208.95 4598.98 616.32 4666.00 300.04 5316.91 723.68 1.789 45 202.63 4596.88 611.05 4666.00 280.17 5379.89 786.84 1.790 46 204.74 4597.58 620.53 4666.00 289.54 5379.84 786.84 1.790 47 203.68 4597.23 610.00 4666.00 282.85 5364.21 771.05 1.790 48 206.84 4598.28 618.42 4666.00 294.78 5348.41 755.26 1.790 49 210.00 4599.33 626.84 4666.00 306.50 5332.48 739.47 1.790 50 205.79 4597.93 619.47 4666.00 292.16 5364.13 771.05 1.791 51 208.95 4598.98 610.00 4666.00 297.71 5301.29 707.89 1.791 52 208.95 4598.98 627.89 4666.00 303.92 5348.25 755.26 1.791 53 210.00 4599.33 620.53 4666.00 304.15 5316.87 723.68 1.792 54 206.84 4598.28 623.68 4666.00 296.35 5364.12 771.05 1.792 55 202.63 4596.88 616.32 4666.00 281.79 5395.60 802.63 1.792 56 205.79 4597.93 624.74 4666.00 293.75 5379.84 786.84 1.792 57 207.89 4598.63 611.05 4666.00 295.05 5317.05 723.68 1.793 58 207.89 4598.63 622.63 4666.00 298.95 5348.39 755.26 1.793 59 206.84 4598.28 612.11 4666.00 292.40 5332.79 739.47 1.793 60 210.00 4599.33 614.21 4666.00 301.84 5301.25 707.89 1.793 61 203.68 4597.23 615.26 4666.00 284.44 5379.92 786.84 1.793 62 201.58 4596.53 611.05 4666.00 276.63 5395.64 802.63 1.793 63 204.74 4597.58 614.21 4666.00 287.09 5364.22 771.05 1.794 64 205.79 4597.93 613.16 4666.00 289.74 5348.51 755.26 1.794 65 208.95 4598.98 615.26 4666.00 299.20 5317.02 723.68 1.794 66 202.63 4596.88 610.00 4666.00 279.30 5379.97 786.84 1.795 67 205.79 4597.93 620.53 4666.00 293.00 5364.03 771.05 1.795 68 203.68 4597.23 620.53 4666.00 286.06 5395.62 802.63 1.795 69 207.89 4598.63 616.32 4666.00 296.57 5332.77 739.47 1.796 70 206.84 4598.28 617.37 4666.00 293.94 5348.51 755.26 1.796 71 210.00 4599.33 625.79 4666.00 305.67 5332.59 739.47 1.796 72 208.95 4598.98 626.84 4666.00 303.09 5348.35 755.26 1.796 73 208.95 4598.98 621.58 4666.00 301.55 5332.63 739.47 1.797 74 204.74 4597.58 619.47 4666.00 288.68 5379.93 786.84 1.797 75 206.84 4598.28 628.95 4666.00 297.94 5379.83 786.84 1.797 Page 3 Derr 1 EQ.gar 76 202.63 4596.88 615.26 4666.00 280.92 5395.68 802.63 1.797 77 208.95 4598.98 620.53 4666.00 300.72 5332.74 739.47 1.798 78 207.89 4598.63 621.58 4666.00 298.11 5348.49 755.26 1.798 79 205.79 4597.93 618.42 4666.00 291.31 5364.23 771.05 1.798 80 204.74 4597.58 624.74 4666.00 290.30 5395.64 802.63 1.798 81 201.58 4596.53 610.00 4666.00 275.75 5395.72 802.63 1.798 82 206.84 4598.28 622.63 4666.00 295.50 5364.22 771.05 1.798 83 203.68 4597.23 614.21 4666.00 283.58 5380.00 766.84 1.798 84 205.79 4597.93 623.68 4666.00 292.90 5379.94 786.84 1.799 85 206.84 4598.28 611.05 4666.00 291.55 5332.89 739.47 1.799 86 204.74 4597.58 613.16 4666.00 286.23 5364.31 771.05 1.799 87 202.63 4596.88 620.53 4666.00 282.57 5411.38 818.42 1.799 88 207.89 4598.63 610.00 4666.00 294.21 5317.15 723.68 1.799 89 205.79 4597.93 612.11 4666.00 288.89 5348.61 755.26 1.800 90 210.00 4599.33 613.16 4666.00 301.00 5301.35 707.89 1.800 91 205.79 4597.93 628.95 4666.00 294.52 5395.64 802.63 1.800 92 201.58 4596.53 615.26 4666.00 277.40 5411.43 818.42 1.800 93 206.84 4598.28 627.89 4666.00 297.10 5379.93 786.84 1.801 94 207.89 4598.63 615.26 4666.00 298.41 5316.63 723.68 1.801 95 207.89 4598.63 626.84 4666.00 299.68 5364.20 771.05 1.801 96 200.53 4596.18 610.00 4666.00 272.19 5411.45 818.42 1.801 97 207.89 4598.63 627.89 4666.00 300.52 5364.10 771.05 1.801 98 205.79 4597.93 616.32 4666.00 292.29 5348.22 755.26 1.801 99 203.68 4597.23 619.47 4666.00 285.20 5395.71 802.63 1.801 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4598.63 XR: 610.00 YR: 4666.00 Centre: XC: 296.93 YC: 5300.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4598.63 229.53 4596.23 251.22 4594.49 272.96 4593.42 294.72 4593.01 316.49 4593.28 338.24 4594.22 359.94 4595.82 381.59 4598.09 403.16 4601.02 424.62 4604.62 445.97 4608.88 467.17 4613.79 488.22 4619.34 509.08 4625.55 529.74 4632.39 550.19 4639.86 570.39 4647.96 590.33 4656.68 610.00 4666.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 44 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle. Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 3.33 -6.3 3.87 3.89 2 0.00 35.0 415.70 0.00 112.45 1.05 2 211.76 32.81 -6.3 8.88 8.94 2 0.00 35.0 4101.35 739.04 479.24 1.05 3 220.64 67.88 -6.3 8.88 8.94 2 0.00 35.0 8485.16 2216.86 987.94 1.05 4 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 1002.18 1305.18 1.04 5 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 4322.11 1619.52 1.02 6 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 5812.45 2124.56 1.02 7 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 8410.39 2631.61 1.01 8 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 10155.18 3163.33 1.01 9 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 11787.94 3655.19 1.00 10 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 13307.27 4138.16 1.00 11 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 14713.44 4577.32 1.00 12 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 16006.32 5011.31 1.00 13 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 17184.25 5398.07 0.99 14 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 18248.23 5782.81 0.99 15 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 19197.54 6117.48 0.99 16 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 20032.53 6453.11 0.99 17 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 3262.05 6615.44 0.99 Page 4 Derr 1 EQ.gar 18 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 19167.69 6679.66 0.97 19 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 19679.82 6954.81 0.97 20 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 19646.09 7146.72 0.96 21 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 19948.88 7375.46 0.96 22 - 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 4471.75 7517.00 0.96 23 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 14317.99 7553.41 0.95 24 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 15358.25 7555.21 0.95 25 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 15424.53 7412.05 0.95 26 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 22649.49 7155.65 0.94 27 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 22560.57 6908.57 0.94 28 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 22357.02 6588.13 0.94 29 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 22037.64 6304.73 0.94 30 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 21602.94 5954.65 0.94 31 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 21052.78 5635.43 0.94 32 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 20387.38 5256.61 0.93 33 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 19607.24 4902.41 0.93 34 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 18712.55 4495.74 0.93 35 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 17702.52 4107.05 0.93 36 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 16577.44 3673.71 0.93 37 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 15339.30 3251.38 0.93 38 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 10948.52 2843.81 0.93 39 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2232.25 0.88 40 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2308.74 0.93 41 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1823.47 0.93 42 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1319.06 0.93 43 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 694.61 0.93 44 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 140.85 1.00 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869065.50 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 1 EQ Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 1 EQ Full.gmf Processed: 07 Jun 2018 17:46:32 DATA: Analysis 1 — Case 1 - West Side - Pseudostatic - Full Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4663.00 Profile: 2 (2 points) 561.00 4666.00 Profile: 3 (3 points) 200.00 4596.00 Profile: 4 (2 points) 558.00 4666.00 Profile: 5 (2 points) 561.00 4663.00 Profile: 6 (3 points) 100.00 4596.00 Profile: 7 (2 points) 561.00 4596.00 Profile: 8 (7 points) 100.00 4593.00 561.00 4593.00 Slope Surface (6 points). Material beneath: 1 - Overburden 410.00 4666.00 558.00 Material beneath: 1 - Overburden 700.00 4666.00 Material beneath: 2 - Sand and Gravel 401.00 4663.00 558.00 Material beneath: 5 - Slurry Wall 561.00 4666.00 Material beneath: 2 - Sand and Gravel 700.00 4663.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 558.00 Material beneath: 3 - Weathered Bedrock 700.00 4596.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 558.00 700.00 4593.00 4666.00 4663.00 4596.00 4593.00 100.00 4596.00 200.00 4596.00 410.00 4666.00 700.00 4666.00 Phreatic Surface (2 points) 558.01 4590.00 558.00 4666.00 560.99 4590.00 561.00 4666.00 Page 1 Derr 1 EQ Full.gar 100.00 4663.00 700.00 4663.00 Failure Surface Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 620.00 YR: 4666.00 Centre: XC: 300.37 YC: 5288.77 Radius: R: 700.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 1 - West Side - Pseudostatic - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.856 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.00 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4598.63 610.00 4666.00 296.93 5300.90 707.89 2.002 K-- Critical Surface 2 206.84 4598.28 610.00 4666.00 293.42 5316.77 723.68 2.007 3 205.79 4597.93 611.05 4666.00 290.75 5332.51 739.47 2.010 4 210.00 4599.33 613.16 4666.00 303.70 5285.07 692.11 2.011 5 210.00 4599.33 612.11 4666.00 302.87 5285.18 692.11 2.014 6 205.79 4597.93 610.00 4666.00 289.90 5332.60 739.47 2.014 7 204.74 4597.58 611.05 4666.0O 287.24 5348.32 755.26 2.016 8 208.95 4598.98 613.16 4666.00 300.22 5300.97 707.89 2.016 9 210.00 4599.33 611.05 4666.00 302.04 5285.29 692.11 2.016 10 203.68 4597.23 612.11 4666.00 284.57 5364.03 771.05 2.017 11 204.74 4597.58 610.00 4666.00 286.38 5348.42 755.26 2.019 12 206.84 4598.28 615.26 4666.00 294.93 5332.49 739.47 2.020 13 203.68 4597.23 611.05 4666.00 283.71 5364.12 771.05 2.020 14 207.89 4598.63 613.16 4666.0O, 296.73 5316.84 723.68 2.020 15 202.63 4596.88 612.11 4666.00 281.04 5379.80 786.84 2.021 16 208.95 4598.98 611.05 4666.00 298.55 5301.18 707.89 2.022 17 203.68 4597.23 610.00 4666.00 282.85 5364.21 771.05 2.022 18 208.95 4598.98 612.11 4666.00 299.39 5301.08 707.89 2.023 19 207.89 4598.63 614.21 4666.00 297.57 5316.74 723.68 2.023 Page 2 Derr 1 EQ Fu1l.gar 20 210.00 4599.33 610.00 4666.00 301.21 5285.40 692.11 2.023 21 206.84 4598.28 614.21 4666.00 294.09 5332.59 739.47 2.023 22 202.63 4596.88 611.05 4666.00 280.17 5379.89 786.84 2.023 23 207.89 4598.63 612.11 4666.00 295.89 5316.95 723.68 2.025 24 205.79 4597.93 615.26 4666.00 291.44 5348.32 755.26 2.025 25 202.63 4596.88 610.00 4666.00 279.30 5379.97 786.84 2.025 26 206.84 4598.28 611.05 4666.00 294.27 5316.67 723.68 2.025 27 201.58 4596.53 611.05 4666.00 276.63 5395.64 802.63 2.026 28 208.95 4598.98 610.00 4666.00 297.71 5301.29 707.89 2.027 29 206.84 4598.28 613.16 4666.00 293.24 5332.69 739.47 2.027 30 204.74 4597.58 616.32 4666.00 288.80 5364.04 771.05 2.027 31 201.58 4596.53 610.00 4666.00 275.75 5395.72 802.63 2.027 32 210.00 4599.33 617.37 4666.00 304.32 5300.92 707.89 2.029 33 205.79 4597.93 614.21 4666.00 290.59 5348.42 755.26 2.029 34 207.89 4598.63 611.05 4666.00 295.05 5317.05 723.68 2.029 35 200.53 4596.18 610.00 4666.00 272.19 5411.45 818.42 2.030 36 210.00 4599.33 616.32 4666.00 303.50 5301.03 707.89 2.030 37 208.95 4598.98 618.42 4666.00 301.70 5316.70 723.68 2.030 38 204.74 4597.58 615.26 4666.00 287.94 5364.13 771.05 2.030 39 207.89 4598.63 619.47 4666.00 299.08 5332.46 739.47 2.030 40 206.84 4598.28 612.11 4666.00 292.40 5332.79 739.47 2.030 41 204.74 4597.58 612.11 4666.00 288.09 5348.23 755.26 2.031 42 203.68 4597.23 616.32 4666.00 285.30 5379.83 786.84 2.031 43 205.79 4597.93 613.16 4666.00 289.74 5348.51 755.26 2.032 44 210.00 4599.33 615.26 4666.00 302.67 5301.14 707.89 2.033 45 204.74 4597.58 614.21 4666.00 287.09 5364.22 771.05 2.033 46 207.89 4598.63 610.00 4666.00 294.21 5317.15 723.68 2.033 47 203.68 4597.23 615.26 4666.00 284.44 5379.92 786.84 2.034 48 206.84 4598.28 611.05 4666.00 291.55 5332.89 739.47 2.034 49 208.95 4598.98 617.37 4666.00 300.87 5316.81 723.68 2.034 50 206.84 4598.28 619.47 4666.00 295.62 5348.31 755.26 2.034 51 202.63 4596.88 616.32 4666.00 281.79 5395.60 802.63 2.034 52 198.42 4596.00 610.00 4666.00 268.79 5427.24 834.21 2.035 53 205.79 4597.93 612.11 4666.00 288.89 5348.61 755.26 2.035 54 208.95 4598.98 616.32 4666.00 300.04 5316.91 723.68 2.036 55 204.74 4597.58 613.16 4666.00 286.23 5364.31 771.05 2.036 56 207.89 4598.63 617.37 4666.00 297.41 5332.67 739.47 2.036 57 210.00 4599.33 614.21 4666.00 301.84 5301.25 707.89 2.036 58 203.68 4597.23 614.21 4666.00 283.58 5380.00 786.84 2.036 59 202.63 4596.88 615.26 4666.00 280.92 5395.68 802.63 2.036 60 208.95 4598.98 614.21 4666.00 301.05 5300.86 707.89 2.036 61 199.47 4596.00 611.05 4666.00 269.84 5427.24 834.21 2.037 62 207.89 4598.63 618.42 4666.00 298.24 5332.56 739.47 2.037 63 206.84 4598.28 610.00 4666.00 290.70 5332.98 739.47 2.038 64 199.47 4596.00 610.00 4666.00 268.96 5427.31 834.21 2.038 65 205.79 4597.93 611.05 4666.00 288.03 5348.70 755.26 2.038 66 208.95 4598.98 615.26 4666.00 299.20 5317.02 723.68 2.038 67 204.74 4597.58 612.11 4666.00 285.37 5364.40 771.05 2.039 68 202.63 4596.88 614.21 4666.00 280.06 5395.77 802.63 2.039 69 203.68 4597.23 613.16 4666.00 282.71 5380.09 786.84 2.039 70 201.58 4596.53 615.26 4666.00 277.40 5411.43 818.42 2.039 71 210.00 4599.33 622.63 4666.00 305.81 5316.65 723.68 2.039 72 206.84 4598.28 618.42 4666.00 294.78 5348.41 755.26 2.039 73 205.79 4597.93 619.47 4666.00 292.16 5364.13 771.05 2.040 74 210.00 4599.33 613.16 4666.00 301.00 5301.35 707.89 2.040 75 194.21 4596.00 610.00 4666.00 265.40 5443.01 850.00 2.040 Page 3 76 201.58 4596.53 614.21 4666.00 276.53 77 204.74 4597.58 620.53 4666.00 289.54 78 207.89 4598.63 616.32 4666.00 296.57 79 202.63 4596.88 613.16 4666.00 279.19 80 203.68 4597.23 612.11 4666.00 281.85 81 204.74 4597.58 611.05 4666.00 284.51 82 205.79 4597.93 610.00 4666.00 287.18 83 210.00 4599.33 621.58 4666.00 304.98 84 206.84 4598.28 617.37 4666.00 293.94 85 195.26 4596.00 611.05 4666.00 266.45 86 201.58 4596.53 613.16 4666.00 275.65 87 200.53 4596.18 614.21 4666.00 272.99 88 202.63 4596.88 612.11 4666.00 278.31 89 203.68 4597.23 611.05 4666.00 280.98 90 208.95 4598.98 614.21 4666.00 298.36 91 195.26 4596.00 610.00 4666.00 265.57 92 204.74 4597.58 610.00 4666.00 283.65 93 208.95 4598.98 622.63 4666.00 302.38 94 200.53 4596.18 613.16 4666.00 272.11 95 201.58 4596.53 612.11 4666.00 274.77 96 196.32 4596.00 612.11 4666.00 267.50 97 202.63 4596,88 611.05 4666.00 277.44 98 203.68 4597.23 620.53 4666.00 286.06 99 207.89 4598.63 623.68 4666.00 299.78 Critical Failure Surface (circle 1) Derr 1 EQ Full.gar 5411.51 818.42 5379.84 5332.77 5395.85 5380.18 5364.49 5348.79 5316.76 5348.51 5443.01 5411.59 5427.23 5395.93 5380.26 5317.12 5443.09 5364.58 5332.53 5427.31 5411.67 5443.01 5396.01 5395.62 5348.28 786.84 739.47 802.63 786.84 771.05 755.26 723.68 755.26 850.00 818.42 834.21 802.63 786.84 723.68 850.00 771.05 739.47 834.21 818.42 850.00 802.63 802.63 755.26 2.041 2.041 2.041 2.041 2.041 2.041 2.041 2.041 2.042 2.042 2.042 2.042 2.042 2.043 2.043 2.043 2.043 2.044 2.044 2.044 2.044 2.044 2.044 2.045 Intersects: XL: 207.89 YL: 4598.63 XR: 610.00 YR: 4666.00 Centre: XC: 296.93 YC: 5300.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4598.63 229.53 4596.23 251.22 4594.49 272.96 4593.42 294.72 4593.01 316.49 4593.28 338.24 4594.22 359.94 4595.82 381.59 4598.09 403.16 4601.02 424.62 4604.62 445.97 4608.88 467.17 4613.79 488.22 4619.34 509.08 4625.55 529.74 4632.39 550.19 4639.86 570.39 4647.96 590.33 4656.68 610.00 4666.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 43 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle. Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 26.01 -6.3 10.82 10.88 2 0.00 35.0 3250.71 44121.15 4210.74 1.05 2 218.71 78.01 -6.3 10.82 10.88 2 0.00 35.0 9750.81 44937.53 4598.88 1.05 3 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 11808.22 4830.62 1.03 4 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 39808.55 5022.25 1.02 5 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 40255.58 5329.22 1.02 6 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 46708.78 5627.37 1.01 7 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 47072.07 5931.80 1.01 8 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 47322.51 6201.88 1.00 9 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 47459.12 6458.06 1.00 10 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 47482.78 6677.43 1.00 11 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 47392.59 6885.35 1.00 12 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 47187.72 7054.42 0.99 13 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 46869.51 7213.96 0.99 14 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 46438.39 7333.14 0.99 15 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 45894.05 7444.63 0.99 16 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 7250.45 7487.54 0.99 17 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 41552.21 7470.95 0.97 Page 4 Derr 1 EQ Fu1l.gar 18 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 40899.08 7543.18 0.97 19 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 39270.70 7558.55 0.96 20 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 38463.15 7590.60 0.96 21 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 8433.12 7633.49 0.96 22 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 26590.00 7692.61 0.96 23 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 27854.13 7689.72 0.96 24 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 27287.63 7540.74 0.96 25 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 38922.54 7298.03 0.95 26 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 37477.37 7040.72 0.95 27 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 35921.64 6727.64 0.95 28 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 34254.98 6432.38 0.95 29 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 32477.69 6084.77 0.95 30 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 30590.21 5752.07 0.95 31 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 28593.53 5370.94 0.95 32 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 26487.28 5001.63 0.95 33 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 24273.40 4587.93 0.94 34 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 21950.25 4182.54 0.94 35 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 19519.23 3737.48 0.94 36 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 16981.99 3296.87 0.94 37 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 11332.78 2875.21 0.94 38 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2255.41 0.90 39 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2329.68 0.94 40 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1841.87 0.95 41 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1333.27 0.95 42 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 704.22 0.95 43 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 146.93 1.01 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869064.75 Page 5 GALENA 7.1 Analysis Results Derr 2.gar Version: 7.10.3.02 Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2.gmf Processed: 07 Jun 2018 18:29:06 DATA: Analysis 1 — Case 2 - NW Oil/Gas Wells Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (4 profiles) Profile: 1 (3 points) Material beneath: 1 - Overburden 407.00 4665.00 416.00 4668.00 550.00 Profile: 2 (3 points) Material beneath: 2 - Sand and Gravel 200.00 4596.00 407.00 4665.00 550.00 Profile: 3 (3 points) Material beneath: 3 - Weathered Bedrock 100.00 4596.00 200.00 4596.00 550.00 Profile: 4 (3 points) Material beneath: 4 - Stable Bedrock 100.00 4593.00 200.00 4593.00 550.00 Slope Surface (5 points) 100.00 4596.00 Phreatic Surface (3 points) 100.00 4596.00 Failure Surface 200.00 4596.00 200.00 4596.00 4668.00 4665.00 4596.00 4593.00 416.00 4668.00 550.00 4665.00 516.00 4668.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 526.00 YR: 4668.00 Centre: XC: 261.36 YC: 5092.22 Radius: R: 500.00 Variable Restraints 550.00 4668.00 Page 1 Derr 2.gar Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 2 NW Oil/Gas Wells Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.442 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.00 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 208.95 4598.98 516.00 4668.00 278.70 5006.21 413.16 2.004 <-- Critical Surface 2 206.84 4598.28 516.00 4668.00 273.73 5021.98 428.95 2.006 3 210.00 4599.33 519.16 4668.00 281.84 5006.20 413.16 2.016 4 207.89 4598.63 519.16 4668.00 276.91 5021.99 428.95 2.018 5 210.00 4599.33 518.11 4668.00 280.99 5006.35 413.16 2.021 6 207.89 4598.63 518.11 4668.00 276.05 5022.13 428.95 2.025 7 203.68 4597.23 518.11 4668.00 266.16 5053.50 460.53 2.026 8 205.79 4597.93 518.11 4668.00 271.11 5037.84 444.74 2.026 9 210.00 4599.33 517.05 4668.00 280.15 5006.49 413.16 2.027 10 203.68 4597.23 517.05 4668.00 265.29 5053.62 460.53 2.031 11 207.89 4598.63 517.05 4668.00 275.20 5022.27 428.95 2.031 12 205.79 4597.93 517.05 4668.00 270.25 5037.97 444.74 2.031 13 201.58 4596.53 516.00 4668.00 259.44 5069.31 476.32 2.033 14 205.79 4597.93 519.16 4668.00 271.97 5037.71 444.74 2.033 15 206.84 4598.28 522.32 4668.00 275.16 5037.74 444.74 2.033 16 208.95 4598.98 522.32 4668.00 280.07 5021.99 428.95 2.034 17 210.00 4599.33 516.00 4668.00 279.31 5006.64 413.16 2.034 18 203.68 4597.23 516.00 4668.00 264.42 5053.73 460.53 2.035 19 204.74 4597.58 516.00 4668.00 268.76 5037.68 444.74 2.036 20 205.79 4597.93 516.00 4668.00 269.38 5038.10 444.74 2.036 21 207.89 4598.63 516.00 4668.00 274.35 5022.40 428.95 2.037 22 208.95 4598.98 521.26 4668.00 279.22 5022.13 428.95 2.038 23 206.84 4598.28 521.26 4668.00 274.31 5037.87 444.74 2.039 24 204.74 4597.58 521.26 4668.00 269.39 5053.54 460.53 2.039 25 202.63 4596.88 520.21 4668.00 263.59 5069.28 476.32 2.042 26 204.74 4597.58 520.21 4668.00 268.52 5053.67 460.53 2.044 27 208.95 4598.98 520.21 4668.00 278.37 5022.27 428.95 2.044 28 206.84 4598.28 520.21 4668.00 273.45 5038.00 444.74 2.045 29 207.89 4598.63 525.47 4668.00 278.34 5037.75 444.74 2.046 30 210.00 4599.33 525.47 4668.00 283.21 5021.99 428.95 2.046 31 202.63 4596.88 519.16 4668.00 262.71 5069.39 476.32 2.046 32 204.74 4597.58 519.16 4668.00 267.66 5053.79 460.53 2.048 33 202.63 4596.88 518.11 4668.00 261.83 5069.50 476.32 2.049 Page 2 Derr 2.gar 34 206.84 4598.28 519.16 4668.00 272.59 5038.13 444.74 2.050 35 200.53 4596.18 517.05 4668.00 255.98 5085.15 492.11 2.050 36 208.95 4598.98 519.16 4668.00 277.52 5022.41 428.95 2.051 37 210.00 4599.33 524.42 4668.00 282.37 5022.13 428.95 2.052 38 205.79 4597.93 524.42 4668.00 272.61 5053.58 460.53 2.052 39 207.89 4598.63 524.42 4668.00 277.49 5037.89 444.74 2.052 40 200.53 4596.18 516.00 4668.00 255.09 5085.25 492.11 2.052 41 204.74 4597.58 518.11 4668.00 266.79 5053.91 460.53 2.053 42 202.63 4596.88 517.05 4668.00 260.95 5069.61 476.32 2.053 43 206.84 4598.28 518.11 4668.00 271.73 5038.26 444.74 2.054 44 203.68 4597.23 523.37 4668.00 266.84 5069.34 476.32 2.055 45 202.63 4596.88 516.00 4668.00 260.07 5069.72 476.32 2.056 46 204.74 4597.58 517.05 4668.00 265.91 5054.02 460.53 2.056 47 208.95 4598.98 518.11 4668.00 276.67 5022.55 428.95 2.057 48 210.00 4599.33 523.37 4668.00 281.53 5022.27 428.95 2.057 49 205.79 4597.93 523.37 4668.00 271.75 5053.71 460.53 2.057 50 207.89 4598.63 523.37 4668.00 276.64 5038.02 444.74 2.058 51 203.68 4597.23 522.32 4668.00 265.97 5069.45 476.32 2.059 52 201.58 4596.53 521.26 4668.00 260.17 5085.13 492.11 2.060 53 195.26 4596.00 516.00 4668.00 250.37 5100.90 507.89 2.060 54 206.84 4598.28 517.05 4668.00 270.87 5038.38 444.74 2.060 55 204.74 4597.58 516.00 4668.00 265.04 5054.14 460.53 2.060 56 196.32 4596.00 517.05 4668.00 251.43 5100.90 507.89 2.062 57 205.79 4597.93 522.32 4668.00 270.88 5053.83 460.53 2.062 58 208.95 4598.98 517.05 4668.00 275.82 5022.69 428.95 2.062 59 201.58 4596.53 520.21 4668.00 259.29 5085.24 492.11 2.063 60 203.68 4597.23 521.26 4668.00 265.10 5069.57 476.32 2.063 61 208.95 4598.98 528.63 4668.00 281.51 5037.76 444.74 2.064 62 197.37 4596.00 518.11 4668.00 252.48 5100.90 507.89 2.064 63 210.00 4599.33 522.32 4668.00 280.69 5022.42 428.95 2.064 64 196.32 4596.00 516.00 4668.00 250.53 5100.99 507.89 2.064 65 207.89 4598.63 522.32 4668.00 275.79 5038.16 444.74 2.064 66 206.84 4598.28 516.00 4668.00 270.00 5038.51 444.74 2.064 67 208.95 4598.98 527.58 4668.00 280.67 5037.90 444.74 2.065 68 206.84 4598.28 527.58 4668.00 275.81 5053.61 460.53 2.065 69 198.42 4596.00 519.16 4668.00 253.53 5100.90 507.89 2.066 70 201.58 4596.53 519.16 4668.00 258.40 5085.34 492.11 2.066 71 197.37 4596.00 517.05 4668.00 251.58 5100.99 507.89 2.066 72 205.79 4597.93 521.26 4668.00 270.02 5053.96 460.53 2.067 73 203.68 4597.23 520.21 4668.00 264.22 5069.68 476.32 2.067 74 199.47 4596.00 520.21 4668.00 254.58 5100.90 507.89 2.068 75 208.95 4598.98 516.00 4668.00 274.96 5022.82 428.95 2.068 76 204.74 4597.58 526.53 4668.00 270.09 5069.39 476.32 2.068 77 208.95 4598.98 517.05 4668.00 279.54 5006.06 413.16 2.069 78 198.42 4596.00 518.11 4668.00 252.64 5100.99 507.89 2.069 79 201.58 4596.53 518.11 4668.00 257.51 5085.44 492.11 2.069 80 197.37 4596.00 516.00 4668.00 250.69 5101.09 507.89 2.069 81 202.63 4596.88 525.47 4668.00 264.33 5085.10 492.11 2.069 82 207.89 4598.63 521.26 4668.00 274.93 5038.29 444.74 2.070 83 203.68 4597.23 519.16 4668.00 263.35 5069.79 476.32 2.071 84 206.84 4598.28 526.53 4668.00 274.96 5053.74 460.53 2.071 85 199.47 4596.00 519.16 4668.00 253.69 5100.99 507.89 2.071 86 198.42 4596.00 517.05 4668.00 251.74 5101.09 507.89 2.071 87 210.00 4599.33 521.26 4668.00 279.84 5022.56 428.95 2.071 88 205.79 4597.93 520.21 4668.00 269.15 5054.08 460.53 2.071 89 208.95 4598.98 526.53 4668.00 279.82 5038.04 444.74 2.072 Page 3 Derr 2.gar 90 202.63 4596.88 524.42 4668.00 263.45 5085.21 492.11 2.073 91 204.74 4597.58 525.47 4668.00 269.22 5069.51 476.32 2.073 92 199.47 4596.00 518.11 4668.00 252.79 5101.09 507.89 2.073 93 210.00 4599.33 531.79 4668.00 284.67 5037.76 444.74 2.074 94 203.68 4597.23 518.11 4668.00 262.47 5069.90 476.32 2.074 95 201.58 4596.53 516.00 4668.00 255.73 5085.64 492.11 2.074 96 198.42 4596.00 516.00 4668.00 250.84 5101.18 507.89 2.075 97 190.00 4596.00 516.00 4668.00 245.95 5116.69 523.68 2.075 98 207.89 4598.63 520.21 4668.00 274.08 5038.42 444.74 2.075 99 205.79 4597.93 519.16 4668.00 268.28 5054.20 460.53 2.075 Critical Failure Surface (circle 1) Intersects: XL: 208.95 YL: 4598.98 XR: 516.00 YR: 4668.00 Centre: XC: 278.70 YC: 5006.21 Radius: R: 413.16 Generated failure surface: (20 points) 208.95 4598.98 225.75 4596.46 242.64 4594.63 259.60 4593.49 276.58 4593.06 293.57 4593.32 310.54 4594.28 327.45 4595.94 344.28 4598.29 360.99 4601.33 377.57 4605.06 393.98 4609.46 410.20 4614.54 426.19 4620.28 441.94 4626.67 457.41 4633.70 472.57 4641.37 487.41 4649.65 501.89 4658.53 516.00 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 208.95 2.98 -8.5 3.51 3.55 2 0.00 35.0 372.17 0.00 111.95 1.07 2 212.46 21.96 -8.5 6.65 6.72 2 0.00 35.0 2744.82 484.19 431.79 1.07 3 219.10 43.33 -8.5 6.65 6.72 2 0.00 35.0 5415.81 1452.75 847.84 1.07 4 225.75 38.38 -6.2 4.24 4.26 2 0.00 35.0 4796.88 1399.61 1164.15 1.05 5 229.99 72.10 -6.2 6.33 6.37 3 100.00 18.0 9047.54 2732.23 1453.01 1.02 6 236.32 89.79 -6.2 6.33 6.37 3 100.00 18.0 11328.43 3500.32 1817.71 1.02 7 242.64 146.50 -3.8 8.48 8.50 3 100.00 18.0 18537.58 5777.47 2206.72 1.01 8 251.12 175.26 -3.8 8.48 8.50 3 100.00 18.0 22209.35 6963.86 2643.10 1.01 9 259.60 202.94 -1.5 8.49 8.50 3 100.00 18.0 25723.42 8058.72 3038.74 1.00 10 268.09 228.85 -1.5 8.49 8.50 3 100.00 18.0 28990.83 9062.06 3424.60 1.00 11 276.58 253.32 0.9 8.49 8.50 3 100.00 18.0 32055.93 9973.06 3766.32 1.00 12 285.08 276.26 0.9 8.49 8.50 3 100.00 18.0 34905.43 10791.10 4101.12 1.00 13 293.57 297.26 3.2 8.48 8.50 3 100.00 18.0 37488.38 11516.44 4388.90 0.99 14 302.06 317.17 3.2 8.48 8.50 3 100.00 18.0 39911.71 12148.01 4672.68 0.99 15 310.54 334.49 5.6 8.46 8.50 3 100.00 18.0 41987.86 12686.24 4906.65 0.99 16 318.99 351.32 5.6 8.46 8.50 3 100.00 18.0 43978.76 13130.37 5139.28 0.99 17 327.45 364.82 8.0 8.41 8.50 2 0.00 35.0 45603.03 13480.64 5241.35 0.96 18 335.86 378.53 8.0 8.41 8.50 2 0.00 35.0 47316.27 13736.65 5436.89 0.96 19 344.28 388.13 10.3 8.36 8.50 2 0.00 35.0 48516.60 13898.52 5555.12 0.96 20 352.64 398.71 10.3 8.36 8.50 2 0.00 35.0 49838.79 13965.63 5704.42 0.96 21 360.99 404.36 12.7 8.29 8.50 2 0.00 35.0 50545.00 13938.71 5773.24 0.95 22 369.28 411.82 12.7 8.29 8.50 2 0.00 35.0 51477.41 13817.05 5876.49 0.95 23 377.57 413.55 15.0 8.21 8.50 2 0.00 35.0 51693.39 13601.62 5896.92 0.95 24 385.78 417.91 15.0 8.21 8.50 2 0.00 35.0 52239.09 13291.25 5954.69 0.95 25 393.98 333.64 17.4 6.51 6.82 2 0.00 35.0 41704.54 10383.96 5926.38 0.94 26 400.49 334.49 17.4 6.51 6.82 2 0.00 35.0 41811.79 10063.15 5936.49 0.94 27 407.00 164.76 17.4 3.20 3.35 2 0.00 35.0 20605.42 4829.60 5947.15 0.94 28 410.20 298.45 19.7 5.80 6.16 2 0.00 35.0 37376.95 8625.58 5881.93 0.94 29 416.00 505.08 19.7 10.19 10.83 2 0.00 35.0 63318.08 14284.16 5666.77 0.94 30 426.19 363.09 22.1 7.87 8.50 2 0.00 35.0 45528.27 10334.03 5216.17 0.95 31 434.07 337.94 22.1 7.87 8.50 2 0.00 35.0 42383.60 9462.49 4853.65 0.95 Page 4 Derr 2.gar 32 441.94 306.05 24.5 7.73 8.50 2 0.00 35.0 38396.07 8498.91 4421.10 0.95 33 449.67 278.86 24.5 7.73 8.50 2 0.00 35.0 34996.40 7443.02 4024.75 0.95 34 457.41 245.55 26.8 7.58 8.50 2 0.00 35.0 30829.71 6295.45 3566.80 0.95 35 464.99 216.50 26.8 7.58 8.50 2 0.00 35.0 27198.44 5056.81 3137.91 0.95 36 472.57 182.24 29.2 7.42 8.50 2 0.00 35.0 22913.36 3727.55 2656.16 0.96 37 479.99 151.53 29.2 7.42 8.50 2 0.00 35.0 19074.46 2308.23 2195.89 0.96 38 487.41 116.88 31.5 7.25 8.50 2 0.00 35.0 14740.80 799.40 1692.14 0.97 39 494.65 84.64 31.5 7.24 8.49 2 0.00 - 35.0 10710.53 0.00 1218.34 0.97 40 501.89 60.10 33.9 9.64 11.61 2 0.00 35.0 7685.99 0.00 645.89 0.98 41 511.53 6.70 33.9 4.47 5.38 1 150.00 22.0 878.04 0.00 128.81 1.06 X -S Area: 10016.23 Path Length: 322.84 X -S Weight: 1256876.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 2 Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2 Full.gmf Processed: 07 Jun 2018 18:29:22 DATA: Analysis 1 Case 2 - NW Oil/Gas Material Properties (5 materials) Wells - Full Material: 1 (Mohr -Coulomb Isotropic) Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) — Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (4 profiles) Profile: 1 (3 points) 407.00 4665.00 Profile: 2 (3 points) 200.00 4596.00 Profile: 3 (3 points) 100.00 4596.00 Profile: 4 (3 points) 100.00 4593.00 Slope Surface (5 points) 100.00 4596.00 Material beneath: 1 - Overburden 416.00 4668.00 550.00 Material beneath: 2 - Sand and Gravel 407.00 4665.00 550.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 550.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 550.00 Phreatic Surface (2 points) 100.00 4665.00 Failure Surface 200.00 4596.00 550.00 4665.00 4668.00 4665.00 4596.00 4593.00 416.00 4668.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 526.00 YR: Centre: XC: 261.36 YC: 5092.22 Radius: R: Variable Restraints Page 1 516.00 4668.00 4668.00 500.00 550.00 4668.00 Derr 2 Full.gar Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 2 - NW Oil/Gas Wells Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 3.445 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.64 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 206.84 4598.28 516.00 4668.00 273.73 5021.98 428.95 2.640 <-- Critical Surface 2 208.95 4598.98 516.00 4668.00 278.70 5006.21 413.16 2.644 3 201.58 4596.53 516.00 4668.00 259.44 5069.31 476.32 2.653 4 203.68 4597.23 516.00 4668.00 264.42 5053.73 460.53 2.658 5 203.68 4597.23 517.05 4668.00 265.29 5053.62 460.53 2.660 6 203.68 4597.23 518.11 4668.00 266.16 5053.50 460.53 2.661 7 205.79 4597.93 516.00 4668.00 269.38 5038.10 444.74 2.665 8 205.79 4597.93 517.05 4668.00 270.25 5037.97 444.74 2.665 9 205.79 4597.93 518.11 4668.00 271.11 5037.84 444.74 2.666 10 207.89 4598.63 519.16 4668.00 276.91 5021.99 428.95 2.667 11 200.53 4596.18 516.00 4668.00 255.09 5085.25 492.11 2.668 12 207.89 4598.63 518.11 4668.00 276.05 5022.13 428.95 2.669 13 207.89 4598.63 517.05 4668.00 275.20 5022.27 428.95 2.670 14 207.89 4598.63 516.00 4668.00 274.35 5022.40 428.95 2.670 15 200.53 4596.18 517.05 4668.00 255.98 5085.15 492.11 2.670 16 210.00 4599.33 519.16 4668.00 281.84 5006.20 413.16 2.671 17 210.00 4599.33 518.11 4668.00 280.99 5006.35 413.16 2.671 18 210.00 4599.33 517.05 4668.00 280.15 5006.49 413.16 2.672 19 195.26 4596.00 516.00 4668.00 250.37 5100.90 507.89 2.672 20 210.00 4599.33 516.00 4668.00 279.31 5006.64 413.16 2.674 21 202.63 4596.88 516.00 4668.00 260.07 5069.72 476.32 2.674 22 196.32 4596.00 516.00 4668.00 250.53 5100.99 507.89 2.676 23 202.63 4596.88 517.05 4668.00 260.95 5069.61 476.32 2.676 24 202.63 4596.88 518.11 4668.00 261.83 5069.50 476.32 2.679 25 196.32 4596.00 517.05 4668.00 251.43 5100.90 507.89 2.679 26 197.37 4596.00 516.00 4668.00 250.69 5101.09 507.89 2.680 27 202.63 4596.88 519.16 4668.00 262.71 5069.39 476.32 2.681 28 202.63 4596.88 520.21 4668.00 263.59 5069.28 476.32 2.683 29 204.74 4597.58 516.00 4668.00 265.04 5054.14 460.53 2.683 30 197.37 4596.00 517.05 4668.00 251.58 5100.99 507.89 2.683 31 190.00 4596.00 516.00 4668.00 245.95 5116.69 523.68 2.684 32 204.74 4597.58 517.05 4668.00 265.91 5054.02 460.53 2.685 33 198.42 4596.00 516.00 4668.00 250.84 5101.18 507.89 2.685 Page 2 Derr 2 Full.gar 34 197.37 4596.00 518.11 4668.00 252.48 5100.90 507.89 2.686 35 204.74 4597.58 518.11 4668.00 266.79 5053.91 460.53 2.686 36 198.42 4596.00 517.05 4668.00 251.74 5101.09 507.89 2.687 37 201.58 4596.53 516.00 4668.00 255.73 5085.64 492.11 2.687 38 204.74 4597.58 516.00 4668.00 268.76 5037.68 444.74 2.687 39 191.05 4596.00 516.00 4668.00 246.11 5116.78 523.68 2.687 40 204.74 4597.58 519.16 4668.00 267.66 5053.79 460.53 2.688 41 205.79 4597.93 519.16 4668.00 271.97 5037.71 444.74 2.688 42 204.74 4597.58 520.21 4668.00 268.52 5053.67 460.53 2.689 43 199.47 4596.00 516.00 4668.00 250.99 5101.28 507.89 2.689 44 204.74 4597.58 521.26 4668.00 269.39 5053.54 460.53 2.689 45 198.42 4596.00 518.11 4668.00 252.64 5100.99 507.89 2.690 46 191.05 4596.00 517.05 4668.00 247.01 5116.69 523.68 2.690 47 192.11 4596.00 516.00 4668.00 246.27 5116.88 523.68 2.691 48 199.47 4596.00 517.05 4668.00 251.89 5101.18 507.89 2.692 49 206.84 4598.28 516.00 4668.00 270.00 5038.51 444.74 2.692 50 201.58 4596.53 518.11 4668.00 257.51 5085.44 492.11 2.693 51 198.42 4596.00 519.16 4668.00 253.53 5100.90 507.89 2.693 52 206.84 4598.28 518.11 4668.00 271.73 5038.26 444.74 2.693 53 206.84 4598.28 517.05 4668.00 270.87 5038.38 444.74 2.693 54 206.84 4598.28 522.32 4668.00 275.16 5037.74 444.74 2.693 55 206.84 4598.28 519.16 4668.00 272.59 5038.13 444.74 2.694 56 199.47 4596.00 518.11 4668.00 252.79 5101.09 507.89 2.694 57 206.84 4598.28 520.21 4668.00 273.45 5038.00 444.74 2.694 58 206.84 4598.28 521.26 4668.00 274.31 5037.87 444.74 2.694 59 192.11 4596.00 517.05 4668.00 247.16 5116.78 523.68 2.694 60 201.58 4596.53 517.05 4668.00 256.62 5085.54 492.11 2.695 61 201.58 4596.53 519.16 4668.00 258.40 5085.34 492.11 2.696 62 203.68 4597.23 516.00 4668.00 260.70 5070.12 476.32 2.696 63 193.16 4596.00 516.00 4668.00 246.42 5116.97 523.68 2.696 64 199.47 4596.00 519.16 4668.00 253.69 5100.99 507.89 2.697 65 192.11 4596.00 518.11 4668.00 248.06 5116.69 523.68 2.697 66 208.95 4598.98 521.26 4668.00 279.22 5022.13 428.95 2.697 67 193.16 4596.00 517.05 4668.00 247.32 5116.88 523.68 2.698 68 201.58 4596.53 520.21 4668.00 259.29 5085.24 492.11 2.698 69 208.95 4598.98 520.21 4668.00 278.37 5022.27 428.95 2.699 70 194.21 4596.00 516.00 4668.00 246.57 5117.06 523.68 2.700 71 208.95 4598.98 522.32 4668.00 280.07 5021.99 428.95 2.700 72 208.95 4598.98 519.16 4668.00 277.52 5022.41 428.95 2.700 73 199.47 4596.00 520.21 4668.00 254.58 5100.90 507.89 2.700 74 201.58 4596.53 521.26 4668.00 260.17 5085.13 492.11 2.701 75 208.95 4598.98 518.11 4668.00 276.67 5022.55 428.95 2.701 76 193.16 4596.00 518.11 4668.00 248.22 5116.78 523.68 2.701 77 208.95 4598.98 517.05 4668.00 275.82 5022.69 428.95 2.701 78 203.68 4597.23 518.11 4668.00 262.47 5069.90 476.32 2.702 79 208.95 4598.98 516.00 4668.00 274.96 5022.82 428.95 2.702 80 200.53 4596.18 516.00 4668.00 251.39 5101.52 507.89 2.703 81 194.21 4596.00 517.05 4668.00 247.47 5116.97 523.68 2.703 82 203.68 4597.23 519.16 4668.00 263.35 5069.79 476.32 2.704 83 193.16 4596.00 519.16 4668.00 249.11 5116.69 523.68 2.704 84 200.53 4596.18 517.05 4668.00 252.29 5101.43 507.89 2.705 85 194.21 4596.00 518.11 4668.00 248.37 5116.88 523.68 2.705 86 195.26 4596.00 516.00 4668.00 246.72 5117.15 523.68 2.705 87 203.68 4597.23 517.05 4668.00 261.59 5070.01 476.32 2.705 88 200.53 4596.18 518.11 4668.00 253.19 5101.33 507.89 2.706 89 203.68 4597.23 520.21 4668.00 264.22 5069.68 476.32 2.706 Page 3 Derr 2 Full.gar 90 195.26 4596.00 517.05 4668.00 247.63 5117.06 523.68 2.706 91 194.21 4596.00 519.16 4668.00 249.27 5116.78. 523.68 2.708 92 203.68 4597.23 521.26 4668.00 265.10 5069.57 476.32 2.708 93 205.79 4597.93 516.00 4668.00 265.67 5054.55 460.53 2.708 94 203.68 4597.23 522.32 4668.00 265.97 5069.45 476.32 2.710 95 205.79 4597.93 517.05 4668.00 266.54 5054.43 460.53 2.710 96 195.26 4596.00 518.11 4668.00 248.53 5116.97 523.68 2.710 97 196.32 4596.00 516.00 4668.00 246.87 5117.24 523.68 2.710 98 200.53 4596.18 519.16 4668.00 254.09 5101.24 507.89 2.711 99 194.21 4596.00 520.21 4668.00 250.16 5116.69 523.68 2.711 Critical Failure Surface (circle 1) Intersects: XL: 206.84 YL: 4598.28 XR: 516.00 YR: 4668.00 Centre: XC: 273.73 YC: 5021.98 Radius: R: 428.95 Generated failure surface: (20 points) 206.84 4598.28 223.77 4595.95 240.77 4594.30 257.83 4593.33 274.91 4593.03 291.99 4593.42 309.04 4594.49 326.03 4596.23 342.94 4598.65 359.75 4601.75 376.41 4605.50 392.91 4609.92 409.23 4614.99 425.32 4620.71 441.18 4627.07 456.77 4634.05 472.08 4641.64 487.06 4649.84 501.71 4658.63 516.00 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 206.84 16.19 -7.8 8.29 8.37 2 0.00 35.0 2023.38 35144.46 4325.70 1.05 2 215.13 48.56 -7.8 8.29 8.37 2 0.00 35.0 6070.12 35739.59 4650.50 1.05 3 223.43 84.03 -5.6 8.67 8.71 3 100.00 18.0 10563.52 37757.49 4957.57 1.02 4 232.10 116.40 -5.5 8.67 8.71 3 100.00 18.0 14727.01 38209.52 5260.09 1.02 5 240.77 144.58 -3.3 8.53 8.54 3 100.00 18.0 18336.96 37812.92 5529.02 1.01 6 249.30 172.97 -3.3 8.53 8.54 3 100.00 18.0 21952.73 38072.28 5777.13 1.01 7 257.83 200.22 -1.0 8.54 8.54 3 100.00 18.0 25403.24 38241.08 5992.25 1.00 8 266.37 225.80 -1.0 8.54 8.54 3 100.00 18.0 28619.80 38319.46 6191.62 1.00 9 274.91 249.88 1.3 8.54 8.54 3 100.00 18.0 31627.12 38306.92 6356.17 1.00 10 283.45 272.54 1.3 8.54 8.54 3 100.00 18.0 34432.43 38203.54 6506.60 1.00 11 291.99 293.22 3.6 8.53 8.54 3 100.00 18.0 36967.73 38009.79 6620.84 0.99 12 300.51 312.90 3.6 8.53 8.54 3 100.00 18.0 39355.29 37725.73 6722.52 0.99 13 309.04 284.91 5.9 7.36 7.40 3 100.00 18.0 35747.16 32382.60 6783.21 0.99 14 316.40 297.41 5.9 7.36 7.40 3 100.00 18.0 37220.24 32033.60 6829.06 0.99 15 323.76 94.36 5.9 2.27 2.28 2 0.00 35.0 11794.91 9820.97 6828.26 0.98 16 326.03 360.06 8.1 8.46 8.54 2 0.00 35.0 45007.20 36330.92 6821.42 0.97 17 334.49 373.66 8.1 8.46 8.54 2 0.00 35.0 46707.21 35686.00 6842.93 0.97 18 342.94 383.26 10.4 8.40 8.54 2 0.00 35.0 47908.02 34952.12 6814.82 0.97 19 351.34 393.80 10.4 8.40 8.54 2 0.00 35.0 49225.10 34128.01 6793.22 0.97 20 359.75 399.57 12.7 8.33 8.54 2 0.00 35.0 49946.34 33215.14 6720.88 0.97 21 368.08 407.05 12.7 8.33 8.54 2 0.00 35.0 50881.43 32212.88 6656.69 0.97 22 376.41 409.02 15.0 8.25 8.54 2 0.00 35.0 51127.08 31123.70 6541.03 0.97 23 384.66 413.48 15.0 8.25 8.54 2 0.00 35.0 51684.77 29945.86 6434.72 0.97 24 392.91 355.43 17.3 7.04 7.38 2 0.00 35.0 44428.73 24847.14 6286.70 0.97 25 399.96 356.54 17.3 7.04 7.38 2 0.00 35.0 44567.83 23839.52 6159.14 0.97 26 407.00 112.90 17.3 2.23 2.33 2 0.00 35.0 14117.84 7323.69 6098.79 0.97 27 409.23 343.27 19.6 6.77 7.19 2 0.00 35.0 42984.39 21891.71 6061.26 0.97 28 416.00 456.36 19.6 9.32 9.90 2 0.00 35.0 57213.03 28367.72 5854.47 0.97 29 425.32 362.34 21.8 7.93 8.54 2 0.00 35.0 45435.13 22758.66 5435.74 0.97 30 433.25 337.15 21.8 7.93 8.54 2 0.00 35.0 42286.59 21065.41 5057.75 0.97 31 441.18 305.51 24.1 7.80 8.54 2 0.00 35.0 38329.39 19288.65 4634.26 0.98 Page 4 Derr 2 Full.gar 32 448.98 278.30 24.1 7.80 8.54 2 0.00 35.0 34927.61 17427.62 4221.15 0.98 33 456.77 245.23 26.4 7.65 8.54 2 0.00 35.0 30792.04 15485.60 3767.26 0.99 34 464.43 216.17 26.4 7.65 8.54 2 0.00 35.0 27159.41 13460.68 3320.16 0.99 35 472.08 182.14 28.7 7.49 6.54 2 0.00 35.0 22902.35 11356.42 2837.39 1.00 36 479.57 151.41 28.7 7.49 8.54 2 0.00 35.0 19061.65 9170.69 2357.42 1.00 37 487.06 116.89 31.0 7.32 8.54 2 0.00 35.0 14742.83 6907.08 1847.48 1.01 38 494.39 84.70 31.0 7.32 8.54 2 0.00 35.0 10718.87 4564.32 1335.89 1.01 39 501.71 60.04 33.2 9.71 11.61 2 0.00 35.0 7680.31 2306.39 703.16 1.02 40 511.42 6.86 33.2 4.58 5.47 1 150.00 22.0 899.22 0.00 144.73 1.09 X -S Area: 9925.11 Path Length: 324.59 X -S Weight: 1245576.12 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 2 EQ.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2 EQ.gmf Processed: 07 Jun 2018 18:29:57 DATA: Analysis 1 - Case 2 - NW Oil/Gas Wells - Pseudostatic Material Properties (5 materials) Material: 1 Cohesion 150.00 Material: 2 Cohesion 0.00 Material: 3 Cohesion 100.00 Material: 4 Cohesion 2000.00 Material: 5 Cohesion 0.00 (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 22.0 131.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 35.0 125.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 18.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 20.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Material Profiles (4 profiles) Profile: 1 407.00 Profile: 2 200.00 Profile: 3 100.00 Profile: 4 100.00 — Overburden - Sand and Gravel - Weathered Bedrock Stable Bedrock - Slurry Wall Unit weight of water/medium above ground: 62.400 (3 points) Material beneath: 1 - Overburden 4665.00 416.00 4668.00 550.00 (3 points) Material beneath: 2 - Sand and Gravel 4596.00 407.00 4665.00 550.00 (3 points) Material beneath: 3 - Weathered Bedrock 4596.00 200.00 4596.00 550.00 (3 points) Material beneath: 4 - Stable Bedrock 4593.00 200.00 4593.00 550.00 Slope Surface (5 points) 100.00 4596.00 Phreatic Surface (3 points) 100.00 4596.00 Failure Surface 200.00 4596.00 200.00 4596.00 4668.00 4665.00 4596.00 4593.00 416.00 4668.00 550.00 4665.00 516.00 4668.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 526.00 YR: 4668.00 Centre: XC: 272.88 YC: 5040.06 Radius: R: 450.00 Earthquake Force 550.00 4668.00 Page 1 Derr 2 EQ.gar Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 20.00 20.00 300.00 20 20 20 RESULTS: Analysis 1 - Case 2 - NW Oil/Gas Wells - Pseudostatic Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 1.982 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 1.52 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 210.00 4599.33 518.11 4668.00 281.61 5003.56 410.53 1.517 <-- Critical Surface 2 207.89 4598.63 518.11 4668.00 276.67 5019.36 426.32 1.520 3 210.00 4599.33 517.05 4668.00 280.77 5003.71 410.53 1.522 4 205.79 4597.93 518.11 4668.00 271.73 5035.09 442.11 1.523 5 207.89 4598.63 517.05 4668.00 275.82 5019.50 426.32 1.526 6 208.95 4598.98 521.26 4668.00 279.83 5019.36 426.32 1.527 7 206.84 4598.28 521.26 4668.00 274.92 5035.11 442.11 1.528 8 210.00 4599.33 516.00 4668.00 279.93 5003.86 410.53 1.528 9 205.79 4597.93 517.05 4668.00 270.87 5035.22 442.11 1.529 10 203.68 4597.23 517.05 4668.00 265.91 5050.88 457.89 1.530 11 208.95 4598.98 520.21 4668.00 278.99 5019.51 426.32 1.531 12 210.00 4599.33 524.42 4668.00 282.98 5019.36 426.32 1.532 13 207.89 4598.63 516.00 4668.00 274.97 5019.64 426.32 1.532 14 207.89 4598.63 524.42 4668.00 278.10 5035.13 442.11 1.533 15 205.79 4597.93 516.00 4668.00 270.00 5035.35 442.11 1.534 16 206.84 4598.28 520.21 4668.00 274.06 5035.25 442.11 1.534 17 203.68 4597.23 516.00 4668.00 265.04 5050.99 457.89 1.534 18 204.74 4597.58 520.21 4668.00 269.14 5050.92 457.89 1.535 19 210.00 4599.33 523.37 4668.00 282.14 5019.50 426.32 1.538 20 208.95 4598.98 519.16 4668.00 278.14 5019.65 426.32 1.538 21 207.89 4598.63 523.37 4668.00 277.25 5035.26 442.11 1.540 22 206.84 4598.28 519.16 4668.00 273.21 5035.38 442.11 1.540 23 202.63 4596.88 519.16 4668.00 263.33 5066.66 473.68 1.540 24 204.74 4597.58 519.16 4668.00 268.27 5051.04 457.89 1.540 25 205.79 4597.93 523.37 4668.00 272.35 5050.96 457.89 1.541 26 208.95 4598.98 527.58 4668.00 281.27 5035.13 442.11 1.542 27 210.00 4599.33 522.32 4668.00 281.30 5019.65 426.32 1.543 28 202.63 4596.88 518.11 4668.00 262.45 5066.77 473.68 1.544 29 208.95 4598.98 518.11 4668.00 277.29 5019.78 426.32 1.545 Page 2 Derr 2 EQ.gar 30 208.95 4598.98 526.53 4668.00 280.42 5035.27 442.11 1.545 31 206.84 4598.28 518.11 4668.00 272.35 5035.51 442.11 1.545 32 204.74 4597.58 518.11 4668.00 267.40 5051.17 457.89 1.545 33 210.00 4599.33 530.74 4668.00 284.42 5035.13 442.11 1.545 34 203.68 4597.23 522.32 4668.00 266.58 5066.72 473.68 1.546 35 207.89 4598.63 522.32 4668.00 276.40 5035.40 442.11 1.546 36 206.84 4598.28 526.53 4668.00 275.56 5050.99 457.89 1.546 37 205.79 4597.93 522.32 4668.00 271.49 5051.09 457.89 1.546 38 202.63 4596.88 517.05 4668.00 261.57 5066.88 473.68 1.548 39 204.74 4597.58 517.05 4668.00 266.53 5051.28 457.89 1.550 40 206.84 4598.28 517.05 4668.00 271.49 5035.63 442.11 1.550 41 203.68 4597.23 521.26 4668.00 265.71 5066.83 473.68 1.550 42 210.00 4599.33 521.26 4668.00 280.45 5019.79 426.32 1.551 43 208.95 4598.98 517.05 4668.00 276.44 5019.92 426.32 1.551 44 200.53 4596.18 516.00 4668.00 255.71 5082.53 489.47 1.551 45 207.89 4598.63 529.68 4668.00 278.75 5051.01 457.89 1.551 46 205.79 4597.93 529.68 4668.00 273.91 5066.69 473.68 1.551 47 204.74 4597.58 525.47 4668.00 269.82 5066.77 473.68 1.551 48 205.79 4597.93 521.26 4668.00 270.63 5051.21 457.89 1.551 49 208.95 4598.98 525.47 4668.00 279.57 5035.41 442.11 1.551 50 206.84 4598.28 525.47 4668.00 274.70 5051.12 457.89 1.552 51 207.89 4598.63 521.26 4668.00 275.54 5035.53 442.11 1.552 52 210.00 4599.33 529.68 4668.00 283.58 5035.27 442.11 1.552 53 202.63 4596.88 516.00 4668.00 260.69 5066.99 473.68 1.552 54 201.58 4596.53 520.21 4668.00 259.90 5082.51 489.47 1.553 55 204.74 4597.58 516.00 4668.00 265.66 5051.40 457.89 1.554 56 202.63 4596.88 524.42 4668.00 264.06 5082.48 489.47 1.554 57 203.68 4597.23 520.21 4668.00 264.83 5066.95 473.68 1.555 58 207.89 4598.63 530.74 4668.00 279.59 5050.88 457.89 1.555 59 203.68 4597.23 528.63 4668.00 266.19 5082.43 489.47 1.555 60 208.95 4598.98 533.89 4668.00 282.77 5050.89 457.89 1.555 61 206.84 4598.28 516.00 4668.00 270.62 5035.76 442.11 1.556 62 208.95 4598.98 532.84 4668.00 281.92 5051.02 457.89 1.556 63 204.74 4597.58 526.53 4668.00 270.68 5066.65 473.68 1.556 64 206.84 4598.28 532.84 4668.00 277.11 5066.72 473.68 1.556 65 204.74 4597.58 524.42 4668.00 268.95 5066.89 473.68 1.556 66 205.79 4597.93 520.21 4668.00 269.76 5051.33 457.89 1.556 67 208.95 4598.98 516.00 4668.00 275.58 5020.06 426.32 1.557 68 201.58 4596.53 519.16 4668.00 259.01 5082.62 489.47 1.557 69 210.00 4599.33 528.63 4668.00 282.74 5035.41 442.11 1.557 70 205.79 4597.93 528.63 4668.00 273.05 5066.81 473.68 1.557 71 210.00 4599.33 520.21 4668.00 279.60 5019.93 426.32 1.557 72 206.84 4598.28 524.42 4668.00 273.84 5051.25 457.89 1.557 73 207.89 4598.63 520.21 4668.00 274.69 5035.66 442.11 1.558 74 207.89 4598.63 528.63 4668.00 277.90 5051.14 457.89 1.558 75 208.95 4598.98 524.42 4668.00 278.72 5035.55 442.11 1.558 76 202.63 4596.88 523.37 4668.00 263.18 5082.59 489.47 1.559 77 203.68 4597.23 519.16 4668.00 263.96 5067.06 473.68 1.559 78 203.68 4597.23 527.58 4668.00 267.32 5082.55 489.47 1.560 79 201.58 4596.53 518.11 4668.00 258.13 5082.72 489.47 1.560 80 204.74 4597.58 531.79 4668.00 271.43 5082.49 489.47 1.561 81 196.32 4596.00 516.00 4668.00 251.14 5098.28 505.26 1.561 82 207.89 4598.63 536.00 4668.00 280.31 5066.75 473.68 1.561 83 204.74 4597.58 523.37 4668.00 268.09 5067.01 473.68 1.561 84 197.37 4596.00 517.05 4668.00 252.19 5098.28 505.26 1.561 85 205.79 4597.93 519.16 4668.00 268.90 5051.45 457.89 1.561 Page 3 Derr 2 EQ.gar 86 198.42 4596.00 518.11 4668.00 253.25 5098.28 505.26 1.561 87 206.84 4598.28 527.58 4668.00 276.41 5050.86 457.89 1.561 88 199.47 4596.00 519.16 4668.00 254.30 5098.28 505.26 1.562 89 206.84 4598.28 531.79 4668.00 276.26 5066.85 473.68 1.562 90 201.58 4596.53 526.53 4668.00 261.56 5098.22 505.26 1.562 91 205.79 4597.93 527.58 4668.00 272.19 5066.94 473.68 1.562 92 206.84 4598.28 523.37 4668.00 272.98 5051.37 457.89 1.562 93 208.95 4598.98 516.00 4668.00 279.32 5003.43 410.53 1.562 94 202.63 4596.88 522.32 4668.00 262.30 5082.70 489.47 1.563 95 203.68 4597.23 518.11 4668.00 263.08 5067.17 473.68 1.563 96 208.95 4598.98 531.79 4668.00 281.08 5051.16 457.89 1.563 97 207.89 4598.63 519.16 4668.00 273.83 5035.79 442.11 1.563 98 210.00 4599.33 519.16 4668.00 278.76 5020.07 426.32 1.564 99 207.89 4598.63 527.58 4668.00 277.04 5051.27 457.89 1.564 Critical Failure Surface (circle 1) Intersects: XL: 210.00 YL: 4599.33 XR: 518.11 YR: 4668.00 Centre: XC: 281.61 YC: 5003.56 Radius: R: 410.53 Generated failure surface: (20 points) 210.00 4599.33 226.85 4596.71 243.79 4594.78 260.80 4593.57 277.84 4593.06 294.89 4593.25 311.92 4594.16 328.90 4595.77 345.79 4596.09 362.58 4601.10 379.22 4604.81 395.69 4609.21 411.97 4614.29 428.03 4620.03 443.83 4626.45 459.35 4633.51 474.56 4641.21 489.44 4649.53 503.97 4658.47 518.11 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 44 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 210.00 3.64 -8.9 3.86 3.91 2 0.00 35.0 455.27 0.00 127.13 1.09 2 213.86 22.58 -8.9 6.49 6.57 2 0.00 35.0 2822.08 470.25 462.64 1.09 3 220.35 43.21 -8.9 6.49 6.57 2 0.00 35.0 5401.56 1410.57 879.51 1.09 4 226.85 60.09 - -6.5 6.24 6.28 2 0.00 35.0 7511.87 2175.32 1251.85 1.06 5 233.09 65.44 -6.5 5.35 5.39 3 100.00 18.0 8205.89 2472.23 1567.36 1.03 6 238.44 78.24 -6.5 5.35 5.39 3 100.00 18.0 9858.58 3031.35 1881.24 1.03 7 243.79 149.12 -4.1 8.50 8.53 3 100.00 18.0 18846.54 5847.79 2244.79 1.02 8 252.30 178.40 -4.1 8.50 8.53 3 100.00 18.0 22589.75 7063.56 2689.61 1.02 9 260.80 206.64 -1.7 8.52 8.53 3 100.00 18.0 26179.82 8186.28 3087.59 1.01 10 269.32 233.03 -1.7 8.52 8.53 3 100.00 18.0 29512.91 9216.04 3480.47 1.01 11 277.84 258.01 0.7 8.53 8.53 3 100.00 18.0 32645.57 10151.62 3821.99 1.00 12 286.37 281.39 0.7 8.53 8.53 3 100.00 18.0 35555.52 10993.32 4162.70 1.00 13 294.89 302.85 3.0 8.51 8.53 3 100.00 18.0 38199.13 11740.00 4448.19 0.99 14 303.41 323.15 3.0 8.51 8.53 3 100.00 18.0 40675.96 12392.33 4736.64 0.99 15 311.92 340.87 5.4 8.49 8.53 3 100.00 18.0 42804.02 12948.95 4966.66 0.98 16 320.41 358.05 5.4 8.49 8.53 3 100.00 18.0 44841.57 13410.62 5202.99 0.98 17 328.90 72.60 7.8 1.67 1.69 3 100.00 18.0 9078.50 2709.46 5304.11 0.98 18 330.57 336.89 7.8 7.61 7.68 2 0.00 35.0 42111.52 12447.24 5300.99 0.95 19 338.18 348.26 7.8 7.61 7.68 2 0.00 35.0 43532.32 12666.29 5478.29 0.95 20 345.79 395.72 10.2 8.39 8.53 2 0.00 35.0 49464.73 14220.46 5570.77 0.94 21 354.18 406.54 10.2 8.39 8.53 2 0.00 35.0 50817.93 14298.77 5720.48 0.94 22 362.58 412.35 12.6 8.32 8.53 2 0.00 35.0 51543.31 14280.98 5772.15 0.93 23 370.90 419.99 12.6 8.32 8.53 2 0.00 35.0 52499.22 14166.50 5875.15 0.93 24 379.22 421.79 14.9 8.24 8.53 2 0.00 35.0 52723.72 13956.76 5877.91 0.92 25 387.46 426.29 14.9 8.24 8.53 2 0.00 35.0 53286.84 13651.21 5934.73 0.92 26 395.69 294.43 17.3 5.65 5.92 2 0.00 35.0 36803.15 9255.02 5887.73 0.92 27 401.35 295.11 17.3 5.65 5.92 2 0.00 35.0 36888.71 9015.42 5895.87 0.92 Page 4 Derr 2 EQ.gar 28 407.00 260.16 17.3 4.97 5.21 2 0.00 35.0 32544.58 7732.31 5907.75 0.92 29 411.97 210.72 19.7 4.03 4.28 2 0.00 35.0 26396.84 6187.65 5829.54 0.91 30 416.00 307.84 19.7 6.01 6.39 2 0.00 35.0 38588.28 8916.31 5704.92 0.91 31 422.01 294.89 19.7 6.01 6.39 2 0.00 35.0 36969.43 8529.99 5465.45 0.91 32 428.03 366.29 22.1 7.90 8.53 2 0.00 35.0 45927.91 10691.08 5094.02 0.91 33 435.93 340.96 22.1 7.90 8.53 2 0.00 35.0 42761.76 9814.08 4740.26 0.91 34 443.83 308.78 24.5 7.76 8.53 2 0.00 35.0 38737.55 8843.51 4305.21 0.91 35 451.59 281.38 24.5 7.76 8.53 2 0.00 35.0 35312.02 7778.95 3918.75 0.91 36 459.35 247.75 26.8 7.61 8.53 2 0.00 35.0 31105.25 6621.63 3461.61 0.91 37 466.95 218.46 26.8 7.61 8.53 2 0.00 35.0 27444.25 5370.94 3043.78 0.91 38 474.56 183.87 29.2 7.44 8.53 2 0.00 35.0 23117.73 4028.95 2566.14 0.91 39 482.00 152.90 29.2 7.44 8.53 2 0.00 35.0 19246.15 2594.62 2118.14 0.91 40 489.44 133.94 31.6 8.44 9.91 2 0.00 35.0 16894.40 1091.11 1583.37 0.91 41 497.88 69.37 31.6 6.08 7.14 2 0.00 35.0 8780.86 0.00 1124.06 0.91 42 503.97 60.71 34.0 9.69 11.68 2 0.00 35.0 7762.58 0.00 611.04 0.92 43 513.65 5.18 34.0 2.35 2.83 1 150.00 22.0 678.75 0.00 188.87 1.02 44 516.00 1.49 34.0 2.11 2.54 1 150.00 22.0 195.67 0.00 22.26 1.02 X -S Area: 10179.38 Path Length: 323.99 X -S Weight: 1277319.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 2 EQ Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 2 EQ Full.gmf Processed: 07 Jun 2018 18:55:44 DATA: Analysis 1 - Case 2 - NW Oil/Gas Material Properties (5 materials) Material: 1 Cohesion 150.00 Material: 2 Cohesion 0.00 Material: 3 Cohesion 100.00 Material: 4 Cohesion 2000.00 Material: 5 Cohesion 0.00 (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 22.0 131.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 35.0 125.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 18.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 20.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 45.0 110.00 Auto Water Properties Wells - Pseudostatic - Full - Overburden - Sand and Gravel - Weathered Bedrock - Stable Bedrock Slurry Wall Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (4 profiles) Profile: 1 (3 points) 407.00 4665.00 Profile: 2 (3 points) 200.00 4596.00 Profile: 3 (3 points) 100.00 4596.00 Profile: 4 (3 points) 100.00 4593.00 Slope Surface (5 points) 100.00 4596.00 Material beneath: 1 - Overburden 416.00 4668.00 550.00 Material beneath: 2 - Sand and Gravel 407.00 4665.00 550.00 Material beneath: 3 - Weathered Bedrock 200.00 4596.00 550.00 Material beneath: 4 - Stable Bedrock 200.00 4593.00 550.00 Phreatic Surface (2 points) 100.00 Failure Surface 4665.00 200.00 4596.00 550.00 4665.00 4668.00 4665.00 4596.00 4593.00 416.00 4668.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4596.00 XR: 526.00 YR: Centre: XC: 272.88 YC: 5040.06 Radius: R: Earthquake Force 516.00 4668.00 4668.00 450.00 550.00 4668.00 Page 1 Derr 2 EQ Full.gar Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 20.00 20.00 300.00 20 20 20 RESULTS: Analysis 1 - Case 2 - NW Oil/Gas Wells - Pseudostatic - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.449 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 1.66 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4598.63 518.11 4668.00 276.67 5019.36 426.32 1.658 <-- Critical Surface 2 210.00 4599.33 518.11 4668.00 281.61 5003.56 410.53 1.658 3 205.79 4597.93 518.11 4668.00 271.73 5035.09 442.11 1.658 4 203.68 4597.23 517.05 4668.00 265.91 5050.88 457.89 1.659 5 205.79 4597.93 517.05 4668.00 270.87 5035.22 442.11 1.661 6 203.68 4597.23 516.00 4668.00 265.04 5050.99 457.89 1.661 7 210.00 4599.33 517.05 4668.00 280.77 5003.71 410.53 1.661 8 207.89 4598.63 517.05 4668.00 275.82 5019.50 426.32 1.661 9 205.79 4597.93 516.00 4668.00 270.00 5035.35 442.11 1.663 10 210.00 4599.33 516.00 4668.00 279.93 5003.86 410.53 1.664 11 207.89 4598.63 516.00 4668.00 274.97 5019.64 426.32 1.664 12 206.84 4598.28 521.26 4668.00 274.92 5035.11 442.11 1.669 13 202.63 4596.88 519.16 4668.00 263.33 5066.66 473.68 1.670 14 200.53 4596.18 516.00 4668.00 255.71 5082.53 489.47 1.670 15 204.74 4597.58 520.21 4668.00 269.14 5050.92 457.89 1.670 16 202.63 4596.88 518.11 4668.00 262.45 5066.77 473.68 1.671 17 208.95 4598.98 521.26 4668.00 279.83 5019.36 426.32 1.671 18 206.84 4598.28 520.21 4668.00 274.06 5035.25 442.11 1.672 19 202.63 4596.88 517.05 4668.00 261.57 5066.88 473.68 1.672 20 208.95 4598.98 520.21 4668.00 278.99 5019.51 426.32 1.672 21 204.74 4597.58 519.16 4668.00 268.27 5051.04 457.89 1.672 22 202.63 4596.88 516.00 4668.00 260.69 5066.99 473.68 1.673 23 204.74 4597.58 518.11 4668.00 267.40 5051.17 457.89 1.674 24 206.84 4598.28 519.16 4668.00 273.21 5035.38 442.11 1.674 25 204.74 4597.58 517.05 4668.00 266.53 5051.28 457.89 1.675 26 208.95 4598.98 519.16 4668.00 278.14 5019.65 426.32 1.675 27 206.84 4598.28 518.11 4668.00 272.35 5035.51 442.11 1.676 28 204.74 4597.58 516.00 4668.00 265.66 5051.40 457.89 1.676 29 196.32 4596.00 516.00 4668.00 251.14 5098.28 505.26 1.676 Page 2 30 206.84 4598.28 517.05 4668.00 31 197.37 4596.00 517.05 4668.00 32 208.95 4598.98 518.11 4668.00 33 197.37 4596.00 516.00 4668.00 34 207.89 4598.63 524.42 4668.00 35 201.58 4596.53 520.21 4668.00 36 206.84 4598.28 516.00 4668.00 37 203.68 4597.23 522.32 4668.00 38 201.58 4596.53 519.16 4668.00 39 198.42 4596.00 518.11 4668.00 40 210.00 4599.33 524.42 4668.00 41 198.42 4596.00 517.05 4668.00 42 205.79 4597.93 523.37 4668.00 43 198.42 4596.00 516.00 4668.00 44 201.58 4596.53 518.11 4668.00 45 201.58 4596.53 517.05 4668.00 46 208.95 4598.98 517.05 4668.00 47 203.68 4597.23 521.26 4668.00 48 207.89 4598.63 523.37 4668.00 49 199.47 4596.00 519.16 4668.00 50 203.68 4597.23 520.21 4668.00 51 205.79 4597.93 522.32 4668.00 52 199.47 4596.00 518.11 4668.00 53 199.47 4596.00 517.05 4668.00 54 210.00 4599.33 523.37 4668.00 55 199.47 4596.00 516.00 4668.00 56 203.68 4597.23 519.16 4668.00 57 208.95 4598.98 516.00 4668.00 58 191.05 4596.00 516.00 4668.00 59 201.58 4596.53 516.00 4668.00 60 203.68 4597.23 518.11 4668.00 61 205.79 4597.93 521.26 4668.00 62 207.89 4598.63 522.32 4668.00 63 203.68 4597.23 517.05 4668.00 64 210.00 4599.33 522.32 4668.00 65 192.11 4596.00 517.05 4668.00 66 192.11 4596.00 516.00 4668.00 67 205.79 4597.93 520.21 4668.00 68 207.89 4598.63 521.26 4668.00 69 205.79 4597.93 519.16 4668.00 70 193.16 4596.00 518.11 4668.00 71 193.16 4596.00 517.05 4668.00 72 193.16 4596.00 516.00 4668.00 73 200.53 4596.18 521.26 4668.00 74 200.53 4596.18 520.21 4668.00 75 200.53 4596.18 519.16 4668.00 76 203.68 4597.23 516.00 4668.00 77 205.79 4597.93 518.11 4668.00 78 202.63 4596.88 524.42 4668.00 79 210.00 4599.33 521.26 4668.00 80 207.89 4598.63 520.21 4668.00 81 194.21 4596.00 519.16 4668.00 82 200.53 4596.18 518.11 4668.00 83 205.79 4597.93 517.05 4668.00 84 202.63 4596.88 523.37 4668.00 85 194.21 4596.00 518.11 4668.00 271.49 252.19 277.29 251.30 278.10 259.90 270.62 266.58 259.01 253.25 282.98 252.35 272.35 251.45 258.13 257.24 276.44 265.71 277.25 254.30 264.83 271.49 253.40 252.51 282.14 251.61 263.96 275.58 246.71 256.35 263.08 270.63 276.40 262.20 281.30 247.76 246.87 269.76 275.54 268.90 248.82 247.92 247.03 256.49 255.59 254.70 261.32 268.03 264.06 280.45 274.69 249.87 253.80 267.16 263.18 248.97 Derr 2 EQ Full.gar 5035.63 442.11 5098.28 5019.78 5098.38 5035.13 5082.51 5035.76 5066.72 5082.62 5098.28 5019.36 5098.38 5050.96 5098.47 5082.72 5082.83 5019.92 5066.83 5035.26 5098.28 5066.95 5051.09 5098.38 5098.47 5019.50 5098.57 5067.06 5020.06 5114.07 5082.93 5067.17 5051.21 5035.40 5067.28 5019.65 5114.07 5114.17 5051.33 5035.53 5051.45 5114.07 5114.17 5114.26 5098.33 5098.43 5098.53 5067.39 5051.57 5082.48 5019.79 5035.66 5114.07 5098.62 5051.69 5082.59 5114.17 Page 3 505.26 426.32 505.26 442.11 489.47 442.11 473.68 489.47 505.26 426.32 505.26 457.89 505.26 489.47 489.47 426.32 473.68 442.11 505.26 473.68 457.89 505.26 505.26 426.32 505.26 473.68 426.32 521.05 489.47 473.68 457.89 442.11 473.68 426.32 521.05 521.05 457.89 442.11 457.89 521.05 521.05 521.05 505.26 505.26 505.26 473.68 457.89 489.47 426.32 442.11 521.05 505.26 457.89 489.47 521.05 1.678 1.679 1.679 1.679 1.679 1.680 1.681 1.681 1.681 1.681. 1.681 1.681 1.681 1.681 1.681 1.682 1.682 1.682 1.683 1.683 1.683 1.683 1.684 1.684 1.684 1.684 1.684 1.685 1.685 1.685 1.685 1.686 1.686 1.686 1.686 1.687 1.687 1.687 1.689 1.689 1.689 1.689 1.689 1.690 1.690 1.690 1.690 1.690 1.690 1.690 1.691 1.691 1.691 1.691 1.691 1.691 Derr 2 EQ Full.gar 86 200.53 4596.18 517.05 4668.00 252.90 5098.72 505.26 1.691 87 194.21 4596.00 517.05 4668.00 248.08 5114.26 521.05 1.692 88 194.21 4596.00 516.00 4668.00 247.18 5114.35 521.05 1.692 89 204.74 4597.58 525.47 4668.00 269.82 5066.77 473.68 1.692 90 206.84 4598.28 526.53 4668.00 275.56 5050.99 457.89 1.692 91 202.63 4596.88 522.32 4668.00 262.30 5082.70 489.47 1.692 92 205.79 4597.93 516.00 4668.00 266.29 5051.81 457.89 1.692 93 200.53 4596.18 516.00 4668.00 252.00 5098.81 505.26 1.693 94 202.63 4596.88 521.26 4668.00 261.42 5082.81 489.47 1.693 95 208.95 4598.98 526.53 4668.00 280.42 5035.27 442.11 1.693 96 195.26 4596.00 520.21 4668.00 250.92 5114.07 521.05 1.693 97 207.89 4598.63 519.16 4668.00 273.83 5035.79 442.11 1.693 98 202.63 4596.88 520.21 4668.00 260.54 5082.91 489.47 1.694 99 195.26 4596.00 519.16 4668.00 250.03 5114.17 521.05 1.694 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4598.63 XR: 518.11 YR: 4668.00 Centre: XC: 276.67 YC: 5019.36 Radius: R: 426.32 Generated failure surface: (20 points) 207.89 4598.63 224.87 4596.21 241.92 4594.47 259.03 4593.41 276.17 4593.05 293.31 4593.37 310.42 4594.38 327.48 4596.08 344.46 4598.47 361.32 4601.54 378.05 4605.28 394.62 4609.69 410.99 4614.76 427.15 4620.49 443.07 4626.86 458.71 4633.87 474.06 4641.50 489.10 4649.74 503.78 4658.58 518.11 4668.00 Slice Geometry and Properties — Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 17.15 -8.1 8.49 8.57 2 0.00 35.0 2143.60 35822.40 4313.89 1.08 2 216.38 51.43 -8.1 8.49 8.57 2 0.00 35.0 6429.25 36471.17 4658.73 1.08 3 224.87 17.20 -5.8 2.02 2.03 2 0.00 35.0 2150.49 8724.12 4856.68 1.05 4 226.88 79.67 -5.8 7.52 7.56 3 100.00 18.0 10005.49 32717.86 5019.09 1.03 5 234.40 104.28 -5.8 7.52 7.56 3 100.00 18.0 13173.41 33079.30 5288.53 1.03 6 241.92 147.13 -3.5 8.56 8.57 3 100.00 18.0 18637.03 37867.14 5540.40 1.01 7 250.47 176.03 -3.5 8.56 8.57 3 100.00 18.0 22322.03 38148.74 5795.84 1.01 8 259.03 203.83 -1.2 8.57 8.57 3 100.00 18.0 25845.59 38338.92 6012.30 1.00 9 267.60 229.87 -1.2 8.57 8.57 3 100.00 18.0 29125.59 38436.52 6217.63 1.00 10 276.17 254.45 1.1 8.57 8.57 3 100.00 18.0 32199.49 38441.52 6381.22 1.00 11 284.74 277.54 1.1 8.57 8.57 3 100.00 18.0 35063.55 38354.81 6536.56 1.00 12 293.31 298.66 3.4 8.56 8.57 3 100.00 18.0 37657.88 38175.68 6647.86 0.99 13 301.87 318.73 3.4 8.56 8.57 3 100.00 18.0 40097.56 37905.12 6753.39 0.99 14 310.42 319.02 5.7 8.10 8.14 3 100.00 18.0 40034.72 35677.68 6811.67 0.99 15 318.53 334.36 5.7 8.10 8.14 3 100.00 18.0 41846.92 35266.84 6864.79 0.99 16 326.63 384.24 7.8 8.91 9.00 2 0.00 35.0 48029.79 38405.28 6819.88 0.95 17 335.54 399.56 8.0 8.91 9.00 2 0.00 35.0 49944.79 37722.23 6839.28 0.95 18 344.46 390.65 10.3 8.43 8.57 2 0.00 35.0 48830.79 35174.34 6796.68 0.94 19 352.89 401.43 10.3 8.43 8.57 2 0.00 35.0 50178.87 34354.81 6775.42 0.94 20 361.32 407.36 12.6 8.36 8.57 2 0.00 35.0 50920.04 33444.89 6687.26 0.94 21 369.69 415.03 12.6 8.36 8.57 2 0.00 35.0 51879.19 32444.25 6623.01 0.94 22 378.05 417.07 14.9 8.28 8.57 2 0.00 35.0 52133.31 31354.35 6491.37 0.93 23 386.34 421.67 14.9 8.28 8.57 2 0.00 35.0 52708.43 30174.12 6385.08 0.93 24 394.62 317.31 17.2 6.19 6.48 2 0.00 35.0 39663.46 21980.28 6229.18 0.93 25 400.81 318.21 17.2 6.19 6.48 2 0.00 35.0 39776.05 21204.67 6117.55 0.93 26 407.00 205.81 17.2 3.99 4.18 2 0.00 35.0 25742.34 13270.95 6066.07 0.93 27 410.99 257.87 19.5 5.01 5.31 2 0.00 35.0 32299.40 16354.91 - 6013.49 0.92 Page 4 Derr 2 EQ Full.gar 28 416.00 281.47 19.5 5.58 5.92 2 0.00 35.0 35284.30 17526.61 5889.60 0.92 29 421.58 270.45 19.5 5.58 5.92 2 0.00 35.0 33906.78 16797.50 5658.55 0.92 30 427.15 365.39 21.8 7.96 8.57 2 0.00 35.0 45817.61 22956.28 5312.40 0.92 31 435.11 340.04 21.8 7.96 8.57 2 0.00 35.0 42648.41 21251.64 4943.05 0.92 32 443.07 308.13 24.1 7.82 8.57 2 0.00 35.0 38656.80 19462.75 4516.74 0.92 33 450.89 280.72 24.1 7.82 8.57 2 0.00 35.0 35231.14 17588.97 4113.70 0.92 34 458.71 247.35 26.4 7.68 8.57 2 0.00 35.0 31056.87 15631.38 3660.60 0.92 35 466.39 218.07 26.4 7.68 8.57 2 0.00 35.0 27396.75 13591.33 3225.13 0.92 36 474.06 183.71 28.7 7.52 8.57 2 0.00 35.0 23099.16 11469.04 2747.01 0.93 37 481.58 152.74 28.7 7.52 8.57 2 0.00 35.0 19227.81 9264.77 2280.46 0.93 38 489.10 117.89 31.0 7.34 8.57 2 0.00 35.0 14868.19 6980.82 1779.26 0.93 39 496.44 85.43 31.0 7.34 8.57 2 0.00 35.0 10810.57 4616.79 1282.84 0.93 40 503.78 60.63 33.3 9.76 11.68 2 0.00 35.0 7754.65 2341.51 665.25 0.94 41 513.55 5.38 33.3 2.45 2.94 1 150.00 22.0 704.91 0.00 196.22 1.03 42 516.00 1.46 33.3 2.11 2.52 1 150.00 22.0 190.95 0.00 26.86 1.03 X -S Area: 10084.41 Path Length: 325.72 X -S Weight: 1265493.62 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 3.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3.gmf Processed: 07 Jun 2018 17:58:04 DATA: Analysis 1 Case 3 - North Side Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4665.00 Profile: 2 (2 points) 561.00 4668.00 Profile: 3 (3 points) 200.00 4598.00 Profile: 4 (2 points) 558.00 4668.00 Profile: 5 (2 points) 561.00 4665.00 Profile: 6 (3 points) 100.00 4598.00 Profile: 7 (2 points) 561.00 4598.00 Profile: 8 (7 points) 100.00 4595.00 561.00 4595.00 Slope Surface (6 points) Material beneath: 1 - Overburden 410.00 4668.00 558.00 4668.00 Material beneath: 1 - Overburden 770.00 4668.00 Material beneath: 2 - Sand and Gravel 401.00 4665.00 558.00 4665.00 Material beneath: 5 - Slurry Wall 561.00 4668.00 Material beneath: 2 - Sand and Gravel 770.00 4665.00 Material beneath: 3 - Weathered Bedrock 200.00 4598.00 558.00 4598.00 Material beneath: 3 - Weathered Bedrock 770.00 4598.00 Material beneath: 4 - Stable Bedrock 200.00 4595.00 558.00 4595.00 770.00 4595.00 100.00 4598.00 200.00 4598.00 410.00 4668.00 770.00 4668.00 Phreatic Surface (5 points) 558.01 4592.00 558.00 4668.00 560.99 4592.00 561.00 4668.00 Page 1 Derr 3.gar 100.00 4598.00 Failure Surface 200.00 4598.00 558.00 4665.00 561.00 4665.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 620.00 YR: 4668.00 Centre: XC: 300.37 YC: 5290.77 Radius: R: 700.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 3 - North Side Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 3.237 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.55 Results Summary - Lowest 99 Factor of Safety circles 770.00 4665.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4600.63 610.00 4668.00 296.93 5302.90 707.89 2.545 <-- Critical Surface 2 206.84 4600.28 610.00 4668.00 293.42 5318.77 723.68 2.553 3 205.79 4599.93 611.05 4668.00 290.75 5334.51 739.47 2.556 4 210.00 4601.33 613.16 4668.00 303.70 5287.07 692.11 2.559 5 205.79 4599.93 610.00 4668.00 289.90 5334.60 739.47 2.562 6 204.74 4599.58 611.05 4668.00 287.24 5350.32 755.26 2.564 7 203.68 4599.23 612.11 4668.00 284.57 5366.03 771.05 2.564 8 210.00 4601.33 612.11 4668.00 302.87 5287.18 692.11 2.565 9 208.95 4600.98 613.16 4668.00 300.22 5302.97 707.89 2.568 10 206.84 4600.28 611.05 4668.00 294.27 5318.67 723.68 2.568 11 202.63 4598.88 612.11 4668.00 281.04 5381.80 786.84 2.569 12 204.74 4599.58 610.00 4668.00 286.38 5350.42 755.26 2.569 13 203.68 4599.23 611.05 4668.00 283.71 5366.12 771.05 2.570 14 210.00 4601.33 611.05 4668.00 302.04 5287.29 692.11 2.570 15 206.84 4600.28 615.26 4668.00 294.93 5334.49 739.47 2.571 16 202.63 4598.88 611.05 4668.00 280.17 5381.89 786.84 2.574 17 207.89 4600.63 613.16 4668.00 296.73 5318.84 723.68 2.574 18 203.68 4599.23 610.00 4668.00 282.85 5366.21 771.05 2.575 19 204.74 4599.58 612.11 4668.00 288.09 5350.23 755.26 2.575 20 207.89 4600.63 614.21 4668.00 297.57 5318.74 723.68 2.576 21 206.84 4600.28 614.21 4668.00 294.09 5334.59 739.47 2.577 22 201.58 4598.53 611.05 4668.00 276.63 5397.64 802.63 2.577 23 202.63 4598.88 610.00 4668.00 279.30 5381.97 786.84 2.578 Page 2 Derr 3.gar 24 208.95 4600.98 612.11 4668.00 299.39 5303.08 707.89 2.578 25 208.95 4600.98 611.05 4668.00 298.55 5303.18 707.89 2.579 26 205.79 4599.93 615.26 4668.00 291.44 5350.32 755.26 2.579 27 204.74 4599.58 616.32 4668.00 288.80 5366.04 771.05 2.580 28 210.00 4601.33 610.00 4668.00 301.21 5287.40 692.11 2.581 29 201.58 4598.53 610.00 4668.00 275.75 5397.72 802.63 2.581 30 207.89 4600.63 612.11 4668.00 295.89 5318.95 723.68 2.582 31 200.53 4598.18 610.00 4668.00 272.19 5413.45 818.42 2.583 32 206.84 4600.28 613.16 4668.00 293.24 5334.69 739.47 2.583 33 208.95 4600.98 614.21 4668.00 301.05 5302.86 707.89 2.585 34 205.79 4599.93 614.21 4668.00 290.59 5350.42 755.26 2.585 35 203.68 4599.23 616.32 4668.00 285.30 5381.83 786.84 2.585 36 204.74 4599.58 615.26 4668.00 287.94 5366.13 771.05 2.586 37 208.95 4600.98 610.00 4668.00 297.71 5303.29 707.89 2.587 38 210.00 4601.33 617.37 4668.00 304.32 5302.92 707.89 2.587 39 208.95 4600.98 618.42 4668.00 301.70 5318.70 723.68 2.588 40 207.89 4600.63 619.47 4668.00 299.08 5334.46 739.47 2.588 41 202.63 4598.88 616.32 4668.00 281.79 5397.60 802.63 2.589 42 207.89 4600.63 611.05 4668.00 295.05 5319.05 723.68 2.589 43 206.84 4600.28 612.11 4668.00 292.40 5334.79 739.47 2.590 44 203.68 4599.23 615.26 4668.00 284.44 5381.92 786.84 2.590 45 210.00 4601.33 616.32 4668.00 303.50 5303.03 707.89 2.591 46 198.42 4598.00 610.00 4668.00 268.79 5429.24 834.21 2.591 47 204.74 4599.58 614.21 4668.00 287.09 5366.22 771.05 2.591 48 205.79 4599.93 613.16 4668.00 289.74 5350.51 755.26 2.591 49 206.84 4600.28 619.47 4668.00 295.62 5350.31 755.26 2.593 50 199.47 4598.00 611.05 4668.00 269.84 5429.24 834.21 2.594 51 202.63 4598.88 615.26 4668.00 280.92 5397.68 802.63 2.594 52 208.95 4600.98 617.37 4668.00 300.87 5318.81 723.68 2.595 53 203.68 4599.23 614.21 4668.00 283.58 5382.00 786.84 2.595 54 206.84 4600.28 611.05 4668.00 291.55 5334.89 739.47 2.596 55 210.00 4601.33 615.26 4668.00 302.67 5303.14 707.89 2.596 56 201.58 4598.53 615.26 4668.00 277.40 5413.43 818.42 2.596 57 207.89 4600.63 610.00 4668.00 294.21 5319.15 723.68 2.596 58 204.74 4599.58 613.16 4668.00 286.23 5366.31 771.05 2.597 59 199.47 4598.00 610.00 4668.00 268.96 5429.31 834.21 2.597 60 205.79 4599.93 612.11 4668.00 288.89 5350.61 755.26 2.597 61 202.63 4598.88 614.21 4668.00 280.06 5397.77 802.63 2.598 62 207.89 4600.63 618.42 4668.00 298.24 5334.56 739.47 2.598 63 207.89 4600.63 617.37 4668.00 297.41 5334.67 739.47 2.599 64 194.21 4598.00 610.00 4668.00 265.40 5445.01 850.00 2.599 65 208.95 4600.98 616.32 4668.00 300.04 5318.91 723.68 2.600 66 203.68 4599.23 613.16 4668.00 282.71 5382.09 786.84 2.600 67 201.58 4598.53 614.21 4668.00 276.53 5413.51 818.42 2.600 68 204.74 4599.58 620.53 4668.00 289.54 5381.84 786.84 2.601 69 204.74 4599.58 612.11, 4668.00 285.37 5366.40 771.05 2.602 70 200.53 4598.18 614.21 4668.00 272.99 5429.23 834.21 2.602 71 205.79 4599.93 619.47 4668.00 292.16 5366.13 771.05 2.602 72 195.26 4598.00 611.05 4668.00 266.45 5445.01 850.00 2.602 73 206.84 4600.28 618.42 4668.00 294.78 5350.41 755.26 2.602 74 210.00 4601.33 614.21 4668.00 301.84 5303.25 707.89 2.602 75 202.63 4598.88 613.16 4668.00 279.19 5397.85 802.63 2.602 76 205.79 4599.93 611.05 4668.00 288.03 5350.70 755.26 2.603 77 206.84 4600.28 610.00 4668.00 290.70 5334.98 739.47 2.603 78 201.58 4598.53 613.16 4668.00 275.65 5413.59 818.42 2.604 79 196.32 4598.00 612.11 4668.00 267.50 5445.01 850.00 2.604 Page 3 Derr 3.gar 80 208.95 4600.98 615.26 4668.00 299.20 5319.02 723.68 2.605 81 203.68 4599.23 612.11 4668.00 281.85 5382.18 786.84 2.605 82 210.00 4601.33 622.63 4668.00 305.81 5318.65 723.68 2.605 83 200.53 4598.18 613.16 4668.00 272.11 5429.31 834.21 2.605 84 195.26 4598.00 610.00 4668.00 265.57 5445.09 850.00 2.605 85 203.68 4599.23 620.53 4668.00 286.06 5397.62 802.63 2.606 86 202.63 4598.88 612.11 4668.00 278.31 5397.93 802.63 2.606 87 204.74 4599.58 611.05 4668.00 284.51 5366.49 771.05 2.607 88 207.89 4600.63 616.32 4668.00 296.57 5334.77 739.47 2.607 89 206.84 4600.28 617.37 4668.00 293.94 5350.51 755.26 2.607 90 197.37 4598.00 613.16 4668.00 268.56 5445.01 850.00 2.607 91 201.58 4598.53 612.11 4668.00 274.77 5413.67 818.42 2.607 92 196.32 4598.00 611.05 4668.00 266.62 5445.09 850.00 2.608 93 204.74 4599.58 619.47 4668.00 288.68 5381.93 786.84 2.608 94 205.79 4599.93 610.00 4668.00 287.18 5350.79 755.26 2.608 95 200.53 4598.18 612.11 4668.00 271.22 5429.38 834.21 2.608 96 203.68 4599.23 611.05 4668.00 280.98 5382.26 786.84 2.609 97 210.00 4601.33 621.58 4668.00 304.98 5318.76 723.68 2.609 98 205.79 4599.93 616.32 4668.00 292.29 5350.22 755.26 2.609 99 202.63 4598.88 620.53 4668.00 282.57 5413.38 818.42 2.609 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4600.63 XR: 610.00 YR: 4668.00 Centre: XC: 296.93 YC: 5302.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4600.63 229.53 4598.23 251.22 4596.49 272.96 4595.42 294.72 4595.01 316.49 4595.28 338.24 4596.22 359.94 4597.82 381.59 4600.09 403.16 4603.02 424.62 4606.62 445.97 4610.88 467.17 4615.79 488.22 4621.34 509.08 4627.55 529.74 4634.39 550.19 4641.86 570.39 4649.96 590.33 4658.68 610.00 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 44 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 3.33 -6.3 3.87 3.89 2 0.00 35.0 415.70 0.00 110.88 1.04 2 211.76 32.81 -6.3 8.88 8.94 2 0.00 35.0 4101.35 739.04 473.69 1.04 3 220.64 67.88 -6.3 8.88 8.94 2 0.00 35.0 8485.16 2216.86 977.58 1.04 4 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 1002.18 1295.66 1.03 5 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 4322.11 1612.77 1.01 6 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 5812.45 2116.21 1.01 7 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 8410.39 2625.53 1.01 8 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 10155.18 3156.19 1.01 9 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 11787.94 3652.17 1.00 10 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 13307.27 4134.77 1.00 11 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 14713.44 4579.76 1.00 12 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 16006.32 5013.97 1.00 13 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 17184.25 5408.09 1.00 14 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 18248.23 5793.51 1.00 15 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 19197.54 6136.81 0.99 16 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 20032.53 6473.52 0.99 17 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 3262.05 6644.99 0.99 18 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 19167.69 6739.00 0.98 19 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 19679.82 7016.94 0.98 20 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 19646.09 7229.07 0.97 21 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 19948.88 7460.94 0.97 Page 4 Derr 3.gar 22 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 4471.75 7604.52 0.97 23 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 14317.99 7660.81 0.97 24 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 15358.25 7662.42 0.97 25 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 15424.53 7516.33 0.97 26 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 22649.49 7272.74 0.97 27 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 22560.57 7020.15 0.97 28 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 22357.02 6708.63 0.96 29 456.57 566.62 13.0 10.60 10.88 2 0.00 - 35.0 71018.34 22037.64 6418.48 0.96 30 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 21602.94 6074.02 0.96 31 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 21052.78 5746.72 0.96 32 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 20387.38 5370.16 0.96 33 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 19607.24 5006.46 0.96 34 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 18712.55 4598.63 0.97 35 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 17702.52 4198.96 0.97 36 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 16577.44 3760.93 0.97 37 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 15339.30 3326.09 0.97 38 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 10948.52 2911.84 0.97 39 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2293.94 0.93 40 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2363.98 0.97 41 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1872.10 0.97 42 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1356.62 0.97 43 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 720.08 0.98 44 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 156.76 1.03 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869065.50 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 3 Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 Full.gmf Processed: 07 Jun 2018 18:00:12 DATA: Analysis 1 Case 3 - North Side Material Properties (5 materials) Material: 1 Cohesion 150.00 Material: 2 Cohesion 0.00 Material: 3 Cohesion 100.00 Material: 4 Cohesion 2000.00 Material: 5 Cohesion 0.00 - Full (Mohr -Coulomb Isotropic) - Overburden Phi UnitWeight Ru 22.0 131.00 Auto (Mohr -Coulomb Isotropic) - Sand and Gravel Phi UnitWeight Ru 35.0 125.00 Auto (Mohr -Coulomb Isotropic) - Weathered Bedrock Phi UnitWeight Ru 18.0 141.00 Auto (Mohr -Coulomb Isotropic) - Stable Bedrock Phi UnitWeight Ru 20.0 141.00 Auto (Mohr -Coulomb Isotropic) - Slurry Wall Phi UnitWeight Ru 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) Material beneath: 1 - Overburden 401.00 4665.00 410.00 4668.00 558.00 Profile: 2 (2 points) Material beneath: 1 - Overburden 561.00 4668.00 770.00 4668.00 Profile: 3 (3 points) Material beneath: 2 — Sand and Gravel 200.00 4598.00 401.00 4665.00 558.00 Profile: 4 (2 points) Material beneath: 5 - Slurry Wall 558.00 4668.00 561.00 4668.00 Profile: 5 (2 points) Material beneath: 2 - Sand and Gravel 561.00 4665.00 770.00 4665.00 Profile: 6 (3 points) Material beneath: 3 - Weathered Bedrock 100.00 4598.00 200.00 4598.00 558.00 4598.00 Profile: 7 (2 points) Material beneath: 3 - Weathered Bedrock 561.00 4598.00 770.00 4598.00 Profile: 8 (7 points) Material beneath: 4 - Stable Bedrock 100.00 4595.00 200.00 4595.00 558.00 4595.00 561.00 4595.00 770.00 4595.0O Slope Surface (6 points) 100.00 4598.00 770.00 4668.00 Phreatic Surface (4 points) 200.00 4598.00 4668.00 4665.00 410.00 4668.00 558.01 4592.00 558.00 4668.00 560.99 4592.00 561.00 4668.00 Page 1 Derr 3 Full.gar 100.00 4665.00 Failure Surface 558.00 4665.00 561.00 4665.00 770.00 4665.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 620.00 YR: 4668.00 Centre: XC: 300.37 YC: 5290.77 Radius: R: 700.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 3 - North Side - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 5.155 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 3.64 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4600.63 610.00 4668.00 296.93 5302.90 707.89 3.644 <-- Critical Surface 2 206.84 4600.28 610.00 4668.00 293.42 5318.77 723.68 3.648 3 205.79 4599.93 611.05 4668.00 290.75 5334.51 739.47 3.654 4 205.79 4599.93 610.00 4668.00 289.90 5334.60 739.47 3.655 5 204.74 4599.58 610.00 4668.00 286.38 5350.42 755.26 3.659 6 204.74 4599.58 611.05 4668.00 287.24 5350.32 755.26 3.659 7 200.53 4598.18 610.00 4668.00 272.19 5413.45 818.42 3.660 8 201.58 4598.53 610.00 4668.00 275.75 5397.72 802.63 3.660 9 203.68 4599.23 610.00 4668.00 282.85 5366.21 771.05 3.660 10 202.63 4598.88 610.00 4668.00 279.30 5381.97 786.84 3.661 11 203.68 4599.23 611.05 4668.00 283.71 5366.12 771.05 3.661 12 203.68 4599.23 612.11 4668.00 284.57 5366.03 771.05 3.662 13 202.63 4598.88 611.05 4668.00 280.17 5381.89 786.84 3.662 14 201.58 4598.53 611.05 4668.00 276.63 5397.64 802.63 3.662 15 202.63 4598.88 612.11 4668.00 281.04 5381.80 786.84 3.663 16 198.42 4598.00 610.00 4668.00 268.79 5429.24 834.21 3.665 17 199.47 4598.00 610.00 4668.00 268.96 5429.31 834.21 3.671 18 194.21 4598.00 610.00 4668.00 265.40 5445.01 850.00 3.672 19 199.47 4598.00 611.05 4668.00 269.84 5429.24 834.21 3.674 20 195.26 4598.00 610.00 4668.00 265.57 5445.09 850.00 3.678 21 195.26 4598.00 611.05 4668.00 266.45 5445.01 850.00 3.680 22 210.00 4601.33 611.05 4668.00 302.04 5287.29 692.11 3.683 23 196.32 4598.00 610.00 4668.00 265.73 5445.16 850.00 3.683 Page 2 24 210.00 4601.33 612.11 4668.00 302.87 25 210.00 4601.33 613.16 4668.00 303.70 26 206.84 4600.28 611.05 4668.00 294.27 27 196.32 4598.00 611.05 4668.00 266.62 28 208.95 4600.98 611.05 4668.00 298.55 29 208.95 4600.98 613.16 4668.00 300.22 30 197.37 4598.00 610.00 4668.00 265.89 31 210.00 4601.33 610.00 4668.00 301.21 32 196.32 4598.00 612.11 4668.00 267.50 33 200.53 4598.18 610.00 4668.00 269.45 34 204.74 4599.58 612.11 4668.00 288.09 35 208.95 4600.98 610.00 4668.00 297.71 36 207.89 4600.63 613.16 4668.00 296.73 37 197.37 4598.00 611.05 4668.00 266.78 38 201.58 4598.53 610.00 4668.00 273.01 39 200.53 4598.18 611.05 4668.00 270.34 40 207.89 4600.63 612.11 4668.00 295.89 41 198.42 4598.00 610.00 4668.00 266.06 42 208.95 4600.98 612.11 4668.00 299.39 43 207.89 4600.63 611.05 4668.00 295.05 44 197.37 4598.00 612.11 4668.00 267.67 45 206.84 4600.28 615.26 4668.00 294.93 46 201.58 4598.53 611.05 4668.00 273.89 47 202.63 4598.88 610.00 4668.00 276.57 48 206.84 4600.28 614.21 4668.00 294.09 49 200.53 4598.18 612.11 4668.00 271.22 50 207.89 4600.63 610.00 4668.00 294.21 51 206.84 4600.28 613.16 4668.00 293.24 52 198.42 4598.00 611.05 4668.00 266.95 53 206.84 4600.28 612.11 4668.00 292.40 54 202.63 4598.88 611.05 4668.00 277.44 55 197.37 4598.00 613.16 4668.00 268.56 56 201.58 4598.53 612.11 4668.00 274.77 57 206.84 4600.28 611.05 4668.00 291.55 58 203.68 4599.23 610.00 4668.00 280.11 59 200.53 4598.18 613.16 4668.00 272.11 60 206.84 4600.28 610.00 4668.00 290.70 61 205.79 4599.93 615.26 4668.00 291.44 62 207.89 4600.63 614.21 4668.00 297.57 63 202.63 4598.88 612.11 4668.00 278.31 64 203.68 4599.23 611.05 4668.00 280.98 65 204.74 4599.58 610.00 4668.00 283.65 66 201.58 4598.53 613.16 4668.00 275.65 67 198.42 4598.00 612.11 4668.00 267.84 68 205.79 4599.93 610.00 4668.00 287.18 69 205.79 4599.93 614.21 4668.00 290.59 70 205.79 4599.93 613.16 4668.00 289.74 71 200.53 4598.18 614.21 4668.00 272.99 72 205.79 4599.93 611.05 4668.00 288.03 73 205.79 4599.93 612.11 4668.00 288.89 74 204.74 4599.58 611.05 4668.00 284.51 75 203.68 4599.23 612.11 4668.00 281.85 76 202.63 4598.88 613.16 4668.00 279.19 77 204.74 4599.58 612.11 4668.00 285.37 78 199.47 4598.00 611.05 4668.00 267.11 79 201.58 4598.53 614.21 4668.00 276.53 Derr 3 Full.gar 5287.18 692.11 5287.07 5318.67 5445.09 5303.18 5302.97 5445.23 5287.40 5445.01 5429.53 5350.23 5303.29 5318.84 5445.16 5413.82 5429.46 5318.95 5445.30 5303.08 5319.05 5445.09 5334.49 5413.75 5398.10 5334.59 5429.38 5319.15 5334.69 5445.23 5334.79 5398.01 5445.01 5413.67 5334.89 5382.35 5429.31 5334.98 5350.32 5318.74 5397.93 5382.26 5366.58 5413.59 5445.16 5350.79 5350.42 5350.51 5429.23 5350.70 5350.61 5366.49 5382.18 5397.85 5366.40 5445.30 5413.51 Page 3 692.11 723.68 850.00 707.89 707.89 850.00 692.11 850.00 834.21 755.26 707.89 723.68 850.00 818.42 834.21 723.68 850.00 707.89 723.68 850.00 739.47 818.42 802.63 739.47 834.21 723.68 739.47 850.00 739.47 802.63 850.00 818.42 739.47 786.84 834.21 739.47 755.26 723.68 802.63 786.84 771.05 818.42 850.00 755.26 755.26 755.26 834.21 755.26 755.26 771.05 786.84 802.63 771.05 850.00 818.42 3.683 3.684 3.684 3.686 3.687 3.688 3.689 3.689 3.689 3.690 3.690 3.690 3.691 3.692 3.692 3.693 3.693 3.694 3.694 3.695 3.695 3.695 3.695 3.696 3.696 3.696 3.697 3.697 3.697 3.698 3.698 3.698 3.698 3.698 3.698 3.699 3.700 3.700 3.700 3.700 3.700 3.700 3.701 3.701 3.701 3.701 3.702 3.702 3.702 3.702 3.702 3.702 3.702 3.703 3.703 3.703 Derr 3 Full.gar 80 199.47 4598.00 610.00 4668.00 266.22 5445.38 850.00 3.703 81 204.74 4599.58 613.16 4668.00 286.23 5366.31 771.05 3.704 82 203.68 4599.23 613.16 4668.00 282.71 5382.09 786.84 3.704 83 204.74 4599.58 616.32 4668.00 288.80 5366.04 771.05 3.704 84 204.74 4599.58 614.21 4668.00 287.09 5366.22 771.05 3.704 85 204.74 4599.58 615.26 4668.00 287.94 5366.13 771.05 3.704 86 198.42 4598.00 613.16 4668.00 268.72 5445.09 850.00 3.704 87 202.63 4598.88 614.21 4668.00 280.06 5397.77 802.63 3.704 88 203.68 4599.23 614.21 4668.00 283.58 5382.00 786.84 3.705 89 201.58 4598.53 615.26 4668.00 277.40 5413.43 818.42 3.705 90 203.68 4599.23 615.26 4668.00 284.44 5381.92 786.84 3.705 91 202.63 4598.88 615.26 4668.00 280.92 5397.68 802.63 3.706 92 203.68 4599.23 616.32 4668.00 285.30 5381.83 786.84 3.706 93 199.47 4598.00 612.11 4668.00 268.00 5445.23 850.00 3.707 94 202.63 4598.88 616.32 4668.00 281.79 5397.60 802.63 3.707 95 198.42 4598.00 614.21 4668.00 269.61 5445.01 850.00 3.707 96 199.47 4598.00 613.16 4668.00 268.89 5445.16 850.00 3.710 97 199.47 4598.00 614.21 4668.00 269.78 5445.09 850.00 3.713 98 199.47 4598.00 615.26 4668.00 270.66 5445.01 850.00 3.716 99 200.53 4598.18 610.00 4668.00 266.71 5445.59 850.00 3.721 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4600.63 XR: 610.00 YR: 4668.00 Centre: XC: 296.93 YC: 5302.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4600.63 229.53 4598.23 251.22 4596.49 272.96 4595.42 294.72 4595.01 316.49 4595.28 338.24 4596.22 359.94 4597.82 381.59 4600.09 403.16 4603.02 424.62 4606.62 445.97 4610.88 467.17 4615.79 488.22 4621.34 509.08 4627.55 529.74 4634.39 550.19 4641.86 570.39 4649.96 590.33 4658.68 610.00 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 43 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 26.01 -6.3 10.82 10.88 2 0.00 35.0 3250.71 44121.15 4207.94 1.03 2 218.71 78.01 -6.3 10.82 10.88 2 0.00 35.0 9750.81 44937.53 4590.48 1.03 3 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 11808.22 4822.19 1.02 4 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 39808.55 5015.60 1.01 5 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 40255.58 5321.04 1.01 6 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 46708.78 5621.43 1.01 7 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 47072.07 5924.88 1.01 8 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 47322.51 6198.96 1.00 9 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 47459.12 6454.80 1.00 10 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 47482.78 6679.77 1.00 11 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 47392.59 6887.89 1.00 12 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 47187.72 7063.91 1.00 13 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 46869.51 7224.03 1.00 14 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 46438.39 7351.24 1.00 15 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 45894.05 7463.59 1.00 16 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 7250.45 7514.96 1.00 17 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 41552.21 7524.77 0.99 18 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 40899.08 7599.22 0.99 19 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 39270.70 7632.70 0.98 20 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 38463.15 7667.11 0.98 21 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 8433.12 7712.00 0.98 Page 4 Derr 3 Full.gar 22 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 26590.00 7791.36 0.98 23 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 27854.13 7790.24 0.98 24 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 27287.63 7639.45 0.98 25 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 38922.54 7410.58 0.98 26 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 37477.37 7149.50 0.98 27 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 35921.64 6847.29 0.98 28 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 34254.98 6547.07 0.98 29 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 32477.69 6207.55 0.98 30 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 30590.21 5868.54 0.98 31 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 28593.53 5492.50 0.99 32 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 26487.28 5115.38 0.99 33 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 24273.40 4703.54 0.99 34 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 21950.25 4288.74 0.99 35 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 19519.23 3842.07 0.99 36 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 16981.99 3390.31 0.99 37 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 11332.78 2964.86 1.00 38 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2340.28 0.97 39 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2404.37 1.00 40 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1907.86 1.01 41 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1384.25 1.01 42 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 738.92 1.01 43 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 168.14 1.05 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869064.75 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 3 EQ.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 EQ.gmf Processed: 07 Jun 2018 17:58:56 DATA: Analysis 1 - Case 3 - North Side Material Properties (5 materials) Material: 1 Cohesion 150.00 Material: 2 Cohesion 0.00 Material: 3 Cohesion 100.00 Material: 4 Cohesion 2000.00 Material: 5 Cohesion 0.00 (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 22.0 131.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 35.0 125.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight, Ru 18.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 20.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 45.0 110.00 Auto Water Properties - Pseudostatic - Overburden - Sand and Gravel - Weathered Bedrock - Stable Bedrock - Slurry Wall Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles). Profile: 1 (3 points) 401.00 4665.00 Profile: 2 (2 points) 561.00 4668.00 Profile: 3 (3 points) 200.00 4598.00 Profile: 4 (2 points) 558.00 4668.00 Profile: 5 (2 points) 561.00 4665.00 Profile: 6 (3 points) 100.00 4598.00 Profile: 7 (2 points) 561.00 4598.00 Profile: 8 (7 points) 100.00 4595.00 561.00 4595.00 Slope Surface (6 points) 100.00 4598.00 770.00 4668.00 Material beneath: 1 - Overburden 410.00 4668.00 558.00 4668.00 Material beneath: 1 - Overburden 770.00 4668.00 Material beneath: 2 - Sand and Gravel 401.00 4665.00 558.00 4665.00 Material beneath: 5 - Slurry Wall 561.00 4668.00 Material beneath: 2 - Sand and Gravel 770.00 4665.00 Material beneath: 3 - Weathered Bedrock 200.00 4598.00 558.00 4598.00 Material beneath: 3 - Weathered Bedrock 770.00 4598.00 Material beneath: 4 - Stable Bedrock 200.00 4595.00 558.00 4595.00 770.00 4595.00 Phreatic Surface (5 points) 200.00 4598.00 410.00 4668.00 Page 1 558.01 4592.00 558.00 4668.00 560.99 4592.00 561.00 4668.00 Derr 3 EQ.gar 100.00 4598.00 Failure Surface 200.00 4598.00 558.00 4665.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 620.00 YR: Centre: XC: 300.37 YC: 5290.77 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 3 - North Side - Pseudostatic Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.254 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 1.76 Results Summary - Lowest 99 Factor of Safety circles 561.00 4665.00 4668.00 700.00 770.00 4665.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4600.63 610.00 4668.00 296.93 5302.90 707.89 1.763 <-- Critical Surface 2 210.00 4601.33 613.16 4668.00 303.70 5287.07 692.11 1.764 3 210.00 4601.33 612.11 4668.00 302.87 5287.18 692.11 1.770 4 206.84 4600.28 610.00 4668.00 293.42 5318.77 723.68 1.770 5 208.95 4600.98 613.16 4668.00 300.22 5302.97 707.89 1.772 6 205.79 4599.93 611.05 4668.00 290.75 5334.51 739.47 1.772 7 206.84 4600.28 615.26 4668.00 294.93 5334.49 739.47 1.774 8 210.00 4601.33 611.05 4668.00 302.04 5287.29 692.11 1.775 9 210.00 4601.33 617.37 4668.00 304.32 5302.92 707.89 1.776 10 208.95 4600.98 618.42 4668.00 301.70 5318.70 723.68 1.777 11 207.89 4600.63 619.47 4668.00 299.08 5334.46 739.47 1.777 12 207.89 4600.63 614.21 4668.00 297.57 5318.74 723.68 1.778 13 207.89 4600.63 613.16 4668.00 296.73 5318.84 723.68 1.778 14 205.79 4599.93 610.00 4668.00 289.90 5334.60 739.47 1.778 15 206.84 4600.28 611.05 4668.00 294.27 5318.67 723.68 1.779 16 204.74 4599.58 611.05 4668.00 287.24 5350.32 755.26 1.779 17 203.68 4599.23 612.11 4668.00 284.57 5366.03 771.05 1.780 18 206.84 4600.28 614.21 4668.00 294.09 5334.59 739.47 1.780 19 210.00 4601.33 622.63 4668.00 305.81 5318.65 723.68 1.780 Page 2 Derr 3 EQ.gar 20 210.00 4601.33 616.32 4668.00 303.50 5303.03 707.89 1.781 21 208.95 4600.98 612.11 4668.00 299.39 5303.08 707.89 1.781 22 205.79 4599.93 615.26 4668.00 291.44 5350.32 755.26 1.781 23 204.74 4599.58 616.32 4668.00 288.80 5366.04 771.05 1.782 24 208.95 4600.98 614.21 4668.00 301.05 5302.86 707.89 1.782 25 206.84 4600.28 619.47 4668.00 295.62 5350.31 755.26 1.783 26 208.95 4600.98 611.05 4668.00 298.55 5303.18 707.89 1.783 27 208.95 4600.98 617.37 4668.00 300.87 5318.81 723.68 1.784 28 202.63 4598.88 612.11 4668.00 281.04 5381.80 786.84 1.785 29 210.00 4601.33 610.00 4668.00 301.21 5287.40 692.11 1.785 30 203.68 4599.23 611.05 4668.00 283.71 5366.12 771.05 1.785 31 204.74 4599.58 610.00 4668.00 286.38 5350.42 755.26 1.785 32 210.00 4601.33 621.58 4668.00 304.98 5318.76 723.68 1.785 33 207.89 4600.63 612.11 4668.00 295.89 5318.95 723.68 1.786 34 204.74 4599.58 612.11 4668.00 288.09 5350.23 755.26 1.786 35 207.89 4600.63 618.42 4668.00 298.24 5334.56 739.47 1.786 36 206.84 4600.28 613.16 4668.00 293.24 5334.69 739.47 1.786 37 210.00 4601.33 615.26 4668.00 302.67 5303.14 707.89 1.787 38 208.95 4600.98 622.63 4668.00 302.38 5334.53 739.47 1.787 39 207.89 4600.63 623.68 4668.00 299.78 5350.28 755.26 1.787 40 203.68 4599.23 616.32 4668.00 285.30 5381.83 786.84 1.788 41 205.79 4599.93 614.21 4668.00 290.59 5350.42 755.26 1.788 42 204.74 4599.58 615.26 4668.00 287.94 5366.13 771.05 1.788 43 207.89 4600.63 617.37 4668.00 297.41 5334.67 739.47 1.789 44 208.95 4600.98 616.32 4668.00 300.04 5318.91 723.68 1.789 45 202.63 4598.88 611.05 4668.00 280.17 5381.89 786.84 1.790 46 204.74 4599.58 620.53 4668.00 289.54 5381.84 786.84 1.790 47 203.68 4599.23 610.00 4668.00 282.85 5366.21 771.05 1.790 48 206.84 4600.28 618.42 4668.00 294.78 5350.41 755.26 1.790 49 210.00 4601.33 626.84 4668.00 306.50 5334.48 739.47 1.790 50 205.79 4599.93 619.47 4668.00 292.16 5366.13 771.05 1.791 51 208.95 4600.98 610.00 4668.00 297.71 5303.29 707.89 1.791 52 208.95 4600.98 627.89 4668.00 303.92 5350.25 755.26 1.791 53 210.00 4601.33 620.53 4668.00 304.15 5318.87 723.68 1.792 54 206.84 4600.28 623.68 4668.00 296.35 5366.12 771.05 1.792 55 202.63 4598.88 616.32 4668.00 281.79 5397.60 802.63 1.792 56 205.79 4599.93 624.74 4668.00 293.75 5381.84 786.84 1.792 57 207.89 4600.63 611.05 4668.00 295.05 5319.05 723.68 1.793 58 207.89 4600.63 622.63 4668.00 298.95 5350.39 755.26 1.793 59 206.84 4600.28 612.11 4668.00 292.40 5334.79 739.47 1.793 60 210.00 4601.33 614.21 4668.00 301.84 5303.25 707.89 1.793 61 203.68 4599.23 615.26 4668.00 284.44 5381.92 786.84 1.793 62 201.58 4598.53 611.05 4668.00 276.63 5397.64 802.63 1.793 63 204.74 4599.58 614.21 4668.00 287.09 5366.22 771.05 1.794 64 205.79 4599.93 613.16 4668.00 289.74 5350.51 755.26 1.794 65 208.95 4600.98 615.26 4668.00 299.20 5319.02 723.68 1.794 66 202.63 4598.88 610.00 4668.00 279.30 5381.97 786.84 1.795 67 205.79 4599.93 620.53 4668.00 293.00 5366.03 771.05 1.795 68 203.68 4599.23 620.53 4668.00 286.06 5397.62 802.63 1.795 69 207.89 4600.63 616.32 4668.00 296.57 5334.77 739.47 1.796 70 206.84 4600.28 617.37 4668.00 293.94 5350.51 755.26 1.796 71 210.00 4601.33 625.79 4668.00 305.67 5334.59 739.47 1.796 72 208.95 4600.98 626.84 4668.00 303.09 5350.35 755.26 1.796 73 208.95 4600.98 621.58 4668.00 301.55 5334.63 739.47 1.797 74 204.74 4599.58 619.47 4668.00 288.68 5381.93 786.84 1.797 75 206.84 4600.28 628.95 4668.00 297.94 5381.83 786.84 1.797 Page 3 Derr 3 EQ.gar 76 202.63 4598.88 615.26 4668.00 280.92 5397.68 802.63 1.797 77 208.95 4600.98 620.53 4668.00 300.72 5334.74 739.47 1.798 78 207.89 4600.63 621.58 4668.00 298.11 5350.49 755.26 1.798 79 205.79 4599.93 618.42 4668.00 291.31 5366.23 771.05 1.798 80 204.74 4599.58 624.74 4668.00 290.30 5397.64 802.63 1.798 81 201.58 4598.53 610.00 4668.00 275.75 5397.72 802.63 1.798 82 206.84 4600.28 622.63 4668.00 295.50 5366.22 771.05 1.798 83 203.68 4599.23 614.21 4668.00 283.58 5382.00 786.84 1.798 84 205.79 4599.93 623.68 4668.00 292.90 5381.94 786.84 1.799 85 206.84 4600.28 611.05 4668.00 291.55 5334.89 739.47 1.799 86 204.74 4599.58 613.16 4668.00 286.23 5366.31 771.05 1.799 87 202.63 4598.88 620.53 4668.00 282.57 5413.38 818.42 1.799 88 207.89 4600.63 610.00 4668.00 294.21 5319.15 723.68 1.799 89 205.79 4599.93 612.11 4668.00 288.89 5350.61 755.26 1.800 90 210.00 4601.33 613.16 4668.00 301.00 5303.35 707.89 1.800 91 205.79 4599.93 628.95 4668.00 294.52 5397.64 802.63 1.800 92 201.58 4598.53 615.26 4668.00 277.40 5413.43 818.42 1.800 93 206.84 4600.28 627.89 4668.00 297.10 5381.93 786.84 1.801 94 207.89 4600.63 615.26 4668.00 298.41 5318.63 723.68 1.801 95 207.89 4600.63 626.84 4668.00 299.68 5366.20 771.05 1.801 96 200.53 4598.18 610.00 4668.00 272.19 5413.45 818.42 1.801 97 207.89 4600.63 627.89 4668.00 300.52 5366.10 771.05 1.801 98 205.79 4599.93 616.32 4668.00 292.29 5350.22 755.26 1.801 99 203.68 4599.23 619.47 4668.00 285.20 5397.71 802.63 1.801 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4600.63 XR: 610.00 YR: 4668.00 Centre: XC: 296.93 YC: 5302.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4600.63 229.53 4598.23 251.22 4596.49 272.96 4595.42 294.72 4595.01 316.49 4595.28 338.24 4596.22 359.94 4597.82 381.59 4600.09 403.16 4603.02 424.62 4606.62 445.97 4610.88 467.17 4615.79 488.22 4621.34 509.08 4627.55 529.74 4634.39 550.19 4641.86 570.39 4649.96 590.33 4658.68 610.00 4668.00 Slice Geometry and Properties Critical Failure Surface (circle 1, 44 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 3.33 -6.3 3.87 3.89 2 0.00 35.0 415.70 0.00 112.45 1.05 2 211.76 32.81 -6.3 8.88 8.94 2 0.00 35.0 4101.35 739.04 479.24 1.05 3 220.64 67.88 -6.3 8.88 8.94 2 0.00 35.0 8485.16 2216.86 987.94 1.05 4 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 1002.18 1305.18 1.04 5 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 4322.11 1619.52 1.02 6 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 5812.45 2124.56 1.02 7 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 8410.39 2631.61 1.01 8 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 10155.18 3163.33 1.01 9 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 11787.94 3655.19 1.00 10 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 13307.27 4138.16 1.00 11 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 14713.44 4577.32 1.00 12 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 16006.32 5011.31 1.00 13 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 17184.25 5398.07 0.99 14 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 18248.23 5782.81 0.99 15 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 19197.54 6117.48 0.99 16 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 20032.53 6453.11 0.99 17 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 3262.05 6615.44 0.99 Page 4 Derr 3 EQ.gar 18 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 19167.69 6679.66 0.97 19 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 19679.82 6954.81 0.97 20 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 19646.09 7146.72 0.96 21 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 19948.88 7375.46 0.96 22 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 4471.75 7517.00 0.96 23 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 14317.99 7553.41 0.95 24 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 15358.25 7555.21 0.95 25 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 15424.53 7412.05 0.95 26 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 22649.49 7155.65 0.94 27 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 22560.57 6908.57 0.94 28 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 22357.02 6588.13 0.94 29 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 22037.64 6304.73 0.94 30 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 21602.94 5954.65 0.94 31 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 21052.78 5635.43 0.94 32 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 20387.38 5256.61 0.93 33 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 19607.24 4902.41 0.93 34 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 18712.55 4495.74 0.93 35 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 17702.52 4107.05 0.93 36 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 16577.44 3673.71 0.93 37 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 15339.30 3251.38 0.93 38 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 10948.52 2843.81 0.93 39 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2232.25 0.88 40 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2308.74 0.93 41 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1823.47 0.93 42 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1319.06 0.93 43 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 694.61 0.93 44 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 140.85 1.00 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869065.50 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 3 EQ Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 3 EQ Full.gmf Processed: 07 Jun 2018 18:56:19 DATA: Analysis 1 - Case 3 - North Side - Pseudostatic - Full Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion. Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) — Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium aboveground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 401.00 4665.00 Profile: 2 (2 points) 561.00 4668.00 Profile: 3 (3 points) 200.00 4598.00 Profile: 4 (2 points) 558.00 4668.00 Profile: 5 (2 points) 561.00 4665.00 Profile: 6 (3 points) 100.00 4598.00 Profile: 7 (2 points) 561.00 4598.00 Profile: 8 (7 points) 100.00 4595.00 561.00 4595.00 Slope Surface (6 points) 100.00 4598.00 770.00 4668.00 Material beneath: 1 - Overburden 410.00 4668.00 558.00 4668.00 Material beneath: 1 - Overburden 770.00 4668.00 Material beneath: 2 - Sand and Gravel 401.00 4665.00 558.00 4665.00 Material beneath: 5 - Slurry Wall 561.00 4668.00 Material beneath: 2 - Sand and Gravel 770.00 4665.00 Material beneath: 3 - Weathered Bedrock 200.00 4598.00 558.00 4598.00 Material beneath: 3 - Weathered Bedrock 770.00 4598.00 Material beneath: 4 - Stable Bedrock 200.00 4595.00 558.00 4595.00 770.00 4595.00 Phreatic Surface (4 points) 200.00 4598.00 410.00 4668.00 558.01 4592.00 558.00 4668.00 560.99 4592.00 561.00 4668.00 Page 1 100.00 Failure Surface 4665.00 558.00 4665.00 .561.00 Derr 3 EQ Full.gar 4665.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 620.00 YR: Centre: XC: 300.37 YC: 5290.77 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 3 - North Side - Pseudostatic - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.856 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.00 Results Summary - Lowest 99 Factor of Safety circles 770.00 4665.00 4668.00 700.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 207.89 4600.63 610.00 4668.00 296.93 5302.90 707.89 2.002 <-- Critical Surface 2 206.84 4600.28 610.00 4668.00 293.42 5318,77 723,68 2.007 3 205.79 4599.93 611.05 4668.00 290.75 5334.51 739.47 2.010 4 210.00 4601.33 613.16 4668.00 303.70 5287.07 692.11 2.011 5 210.00 4601.33 612.11 4668.00 302.87 5287.18 692.11 2.014 6 205.79 4599.93 610.00 4668.00 289.90 5334.60 739.47 2.014 7 204.74 4599.58 611.05 4668.00 287.24 5350.32 755.26 2.016 8 208.95 4600.98 613.16 4668.00 300.22 5302.97 707.89. 2.016 9 21O.00 4601.33 611.05 4668.00_ 302.04 5287.29 692.11 2.016 10 203.68 4599.23 612.11 4668.00 284.57 5366.03 771.05 2.017 11 204.74 4599.58 610.00 4668.00 286.38 5350.42 755.26 2,019 12 206.84 4600.28 615.26 4668.00 294.93 5334.49 739.47 2.020 13 203.68 4599.23 611.05 4668.00 283.71 5366.12 771.05 2.020 14 207.89 4600.63 613.16 4668.00 296.73 5318.84 723.68 2.020 15 202.63 4598.88 612.11 4668.00 281.04 5381.80 786.84 2.021 16 208.95 4600.98 611.05 4668.00 298.55 5303.18 707.89 2.022 17 203.68 4599.23 610.00 4668.00 282.85 5366.21 771.05 2.022 18 208.95 4600.98 612.11 4668.00 299.39 5303.08 707.89 2.023 19 207.89 4600.63 614.21 4668.00 297.57 5318.74 723.68 2.023 Page 2 Derr 3 EQ Fu1l.gar 20 210.00 4601.33 610.00 4668.00 301.21 5287.40 692.11 2.023 21 206.84 4600.28 614.21 4668.00 294.09 5334.59 739.47 2.023 22 202.63 4598.88 611.05 4668.00 280.17 5381.89 786.84 2.023 23 207.89 4600.63 612.11 4668.00 295.89 5318.95 723.68 2.025 24 205.79 4599.93 615.26 4668.00 291.44 5350.32 755.26 2.025 25 202.63 4598.88 610.00 4668.00 279.30 5381.97 786.84 2.025 26 206.84 4600.28 611.05 4668.00 294.27 5318.67 723.68 2.025 27 201.58 4598.53 611.05 4668.00 276.63 5397.64 802.63 2.026 28 208.95 4600.98 610.00 4668.00 297.71 5303.29 707.89 2.027 29 206.84 4600.28 613.16 4668.00 293.24 5334.69 739.47 2.027 30 204.74 4599.58 616.32 4668.00 288.80 5366.04 771.05 2.027 31 201.58 4598.53 610.00 4668.00 275.75 5397.72 802.63 2.027 32 210.00 4601.33 617.37 4668.00 304.32 5302.92 707.89 2.029 33 205.79 4599.93 614.21 4668.00 290.59 5350.42 755.26 2.029 34 207.89 4600.63 611.05 4668.00 295.05 5319.05 723.68 2.029 35 200.53 4598.18 610.00 4668.00 272.19 5413.45 818.42 2.030 36 210.00 4601.33 616.32 4668.00 303.50 5303.03 707.89 2.030 37 208.95 4600.98 618.42 4668.00 301.70 5318.70 723.68 2.030 38 204.74 4599.58 615.26 4668.00 287.94 5366.13 771.05 2.030 39 207.89 4600.63 619.47 4668.00 299.08 5334.46 739.47 2.030 40 206.84 4600.28 612.11 4668.00 292.40 5334.79 739.47 2.030 41 204.74 4599.58 612.11 4668.00 288.09 5350.23 755.26 2.031 42 203.68 4599.23 616.32 4668.00 285.30 5381.83 786.84 2.031 43 205.79 4599.93 613.16 4668.00 289.74 5350.51 755.26 2.032 44 210.00 4601.33 615.26 4668.00 302.67 5303.14 707.89 2.033 45 204.74 4599.58 614.21 4668.00 287.09 5366.22 771.05 2.033 46 207.89 4600.63 610.00 4668.00 294.21 5319.15 723.68 2.033 47 203.68 4599.23 615.26 4668.00 284.44 5381.92 786.84 2.034 48 206.84 4600.28 611.05 4668.00 291.55 5334.89 739.47 2.034 49 208.95 4600.98 617.37 4668.00 300.87 5318.81 723.68 2.034 50 206.84 4600.28 619.47 4668.00 295.62 5350.31 755.26 2.034 51 202.63 4598.88 616.32 4668.00 281.79 5397.60 802.63 2.034 52 198.42 4598.00 610.00 4668.00 268.79 5429.24 834.21 2.035 53 205.79 4599.93 612.11 4668.00 288.89 5350.61 755.26 2.035 54 208.95 4600.98 616.32 4668.00 300.04 5318.91 723.68 2.036 55 204.74 4599.58 613.16 4668.00 286.23 5366.31 771.05 2.036 56 207.89 4600.63 617.37 4668.00 297.41 5334.67 739.47 2.036 57 210.00 4601.33 614.21 4668.00 301.84 5303.25 707.89 2.036 58 203.68 4599.23 614.21 4668.00 283.58 5382.00 786.84 2.036 59 202.63 4598.88 615.26 4668.00 280.92 5397.68 802.63 2.036 60 208.95 4600.98 614.21 4668.00 301.05 5302.86 707.89 2.036 61 199.47 4598.00 611.05 4668.00 269.84 5429.24 834.21 2.037 62 207.89 4600.63 618.42 4668.00 298.24 5334.56 739.47 2.037 63 206.84 4600.28 610.00 4668.00 290.70 5334.98 739.47 2.038 64 199.47 4598.00 610.00 4668.00 268.96 5429.31 834.21 2.038 65 205.79 4599.93 611.05 4668.00 288.03 5350.70 755.26 2.038 66 208.95 4600.98 615.26 4668.00 299.20 5319.02 723.68 2.038 67 204.74 4599.58 612.11 4668.00 285.37 5366.40 771.05 2.039 68 202.63 4598.88 614.21 4668.00 280.06 5397.77 802.63 2.039 69 203.68 4599.23 613.16 4668.00 282.71 5382.09 786.84 2.039 70 201.58 4598.53 615.26 4668.00 277.40 5413.43 818.42 2.039 71 210.00 4601.33 622.63 4668.00 305.81 5318.65 723.68 2.039 72 206.84 4600.28 618.42 4668.00 294.78 5350.41 755.26 2.039 73 205.79 4599.93 619.47 4668.00 292.16 5366.13 771.05 2.040 74 210.00 4601.33 613.16 4668.00 301.00 5303.35 707.89 2.040 75 194.21 4598.00 610.00 4668.00 265.40 5445.01 850.00 2.040 Page 3 Derr 3 EQ Full.gar 76 201.58 4598.53 614.21 4668.00 276.53 5413.51 818.42 2.041 77 204.74 4599.58 620.53 4668.00 289.54 5381.84 786.84 2.041 78 207.89 4600.63 616.32 4668.00 296.57 5334.77 739.47 2.041 79 202.63 4598.88 613.16 4668.00 279.19 5397.85 802.63 2.041 80 203.68 4599.23 612.11 4668.00 281.85 5382.18 786.84 2.041 81 204.74 4599.58 611.05 4668.00 284.51 5366.49 771.05 2.041 82 205.79 4599.93 610.00 4668.00 287.18 5350.79 755.26 2.041 83 210.00 4601.33 621.58 4668.00 304.98 5318.76 723.68 2.041 84 206.84 4600.28 617.37 4668.00 293.94 5350.51 755.26 2.042 85 195.26 4598.00 611.05 4668.00 266.45 5445.01 850.00 2.042 86 201.58 4598.53 613.16 4668.00 275.65 5413.59 818.42 2.042 87 200.53 4598.18 614.21 4668.00 272.99 5429.23 834.21 2.042 88 202.63 4598.88 612.11 4668.00 278.31 5397.93 802.63 2.042 89 203.68 4599.23 611.05 4668.00 280.98 5382.26 786.84 2.043 90 208.95 4600.98 614.21 4668.00 298.36 5319.12 723.68 2.043 91 195.26 4598.00 610.00 4668.00 265.57 5445.09 850.00 2.043 92 204.74 4599.58 610.00 4668.00 283.65 5366.58 771.05 2.043 93 208.95 4600.98 622.63 4668.00 302.38 5334.53 739.47 2.044 94 200.53 4598.18 613.16 4668.00 272.11 5429.31 834.21 2.044 95 201.58 4598.53 612.11 4668.00 274.77 5413.67 818.42 2.044 96 196.32 4598.00 612.11 4668.00 267.50 5445.01 850.00 2.044 97 202.63 4598.88 611.05 4668.00 277.44 5398.01 802.63 2.044 98 203.68 4599.23 620.53 4668.00 286.06 5397.62 802.63 2.044 99 207.89 4600.63 623.68 4668.00 299.78 5350.28 755.26 2.045 Critical Failure Surface (circle 1) Intersects: XL: 207.89 YL: 4600.63 XR: 610.00 YR: 4668.00 Centre: XC: 296.93 YC: 5302.90 Radius: R: 707.89 Generated failure surface: (20 points) 207.89 4600.63 229.53 4598.23 251.22 4596.49 272.96 4595.42 294.72 4595.01 316.49 4595.28 338.24 4596.22 359.94 4597.82 381.59 4600.09 403.16 4603.02 424.62 4606.62 445.97 4610.88 467.17 4615.79 488.22 4621.34 509.08 4627.55 529.74 4634.39 550.19 4641.86 570.39 4649.96 590.33 4658.68 610.00 4668.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 43 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 207.89 26.01 -6.3 10.82 10.88 2 0.00 35.0 3250.71 44121.15 4210.74 1.05 2 218.71 78.01 -6.3 10.82 10.88 2 0.00 35.0 9750.81 44937.53 4598.88 1.05 3 229.53 28.76 -4.6 2.82 2.83 2 0.00 35.0 3595.39 11808.22 4830.62 1.03 4 232.35 120.18 -4.6 9.44 9.47 3 100.00 18.0 15079.98 39808.55 5022.25 1.02 5 241.79 157.01 -4.6 9.44 9.47 3 100.00 18.0 19797.99 40255.58 5329.22 1.02 6 251.22 224.65 -2.8 10.87 10.88 3 100.00 18.0 28390.92 46708.78 5627.37 1.01 7 262.09 269.85 -2.8 10.87 10.88 3 100.00 18.0 34133.70 47072.07 5931.80 1.01 8 272.96 313.58 -1.1 10.88 10.88 3 100.00 18.0 39665.40 47322.51 6201.88 1.00 9 283.84 355.24 -1.1 10.88 10.88 3 100.00 18.0 44907.82 47459.12 6458.06 1.00 10 294.72 395.12 0.7 10.88 10.88 3 100.00 18.0 49898.22 47482.78 6677.43 1.00 11 305.61 433.15 0.7 10.88 10.88 3 100.00 18.0 54628.77 47392.59 6885.35 1.00 12 316.49 468.93 2.5 10.87 10.88 3 100.00 18.0 59048.55 47187.72 7054.42 0.99 13 327.36 503.24 2.5 10.87 10.88 3 100.00 18.0 63255.92 46869.51 7213.96 0.99 14 338.24 534.75 4.2 10.85 10.88 3 100.00 18.0 67083.48 46438.39 7333.14 0.99 15 349.09 565.31 4.2 10.85 10.88 3 100.00 18.0 70764.70 45894.05 7444.63 0.99 16 359.94 92.48 6.0 1.72 1.73 3 100.00 18.0 11562.54 7250.45 7487.54 0.99 17 361.66 548.18 6.0 9.96 10.02 2 0.00 35.0 68522.91 41552.21 7470.95 0.97 Page 4 Derr 3 EQ Fu1l.gar 18 371.63 570.86 6.0 9.96 10.02 2 0.00 35.0 71357.02 40899.08 7543.18 0.97 19 381.59 576.49 7.7 9.71 9.80 2 0.00 35.0 72061.06 39270.70 7558.55 0.96 20 391.29 595.07 7.7 9.71 9.80 2 0.00 35.0 74383.82 38463.15 7590.60 0.96 21 401.00 134.69 7.8 2.16 2.18 2 0.00 35.0 16840.35 8433.12 7633.49 0.96 22 403.16 432.99 9.5 6.84 6.94 2 0.00 35.0 54199.85 26590.00 7692.61 0.96 23 410.00 462.18 9.5 7.31 7.41 2 0.00 35.0 57904.16 27854.13 7689.72 0.96 24 417.31 453.22 9.5 7.31 7.41 2 0.00 35.0 56784.32 27287.63 7540.74 0.96 25 424.62 643.74 11.3 10.67 10.88 2 0.00 35.0 80660.01 38922.54 7298.03 0.95 26 435.30 621.03 11.3 10.67 10.88 2 0.00 35.0 77820.87 37477.37 7040.72 0.95 27 445.97 592.64 13.0 10.60 10.88 2 0.00 35.0 74271.00 35921.64 6727.64 0.95 28 456.57 566.62 13.0 10.60 10.88 2 0.00 35.0 71018.34 34254.98 6432.38 0.95 29 467.17 534.78 14.8 10.52 10.88 2 0.00 35.0 67037.25 32477.69 6084.77 0.95 30 477.69 505.54 14.8 10.52 10.88 2 0.00 35.0 63381.60 30590.21 5752.07 0.95 31 488.22 470.52 16.6 10.43 10.88 2 0.00 35.0 59002.93 28593.53 5370.94 0.95 32 498.65 438.17 16.6 10.43 10.88 2 0.00 35.0 54959.29 26487.28 5001.63 0.95 33 509.08 400.27 18.3 10.33 10.88 2 0.00 35.0 50220.26 24273.40 4587.93 0.94 34 519.41 364.93 18.3 10.33 10.88 2 0.00 35.0 45802.39 21950.25 4182.54 0.94 35 529.74 324.46 20.1 10.22 10.88 2 0.00 35.0 40741.23 19519.23 3737.48 0.94 36 539.96 286.26 20.1 10.22 10.88 2 0.00 35.0 35967.10 16981.99 3296.87 0.94 37 550.19 192.02 21.8 7.81 8.42 2 0.00 35.0 24143.20 11332.78 2875.21 0.94 38 558.00 67.21 21.8 3.00 3.23 5 0.00 45.0 7393.58 3913.59 2255.41 0.90 39 561.00 187.04 21.8 9.39 10.11 2 0.00 35.0 23548.68 10680.52 2329.68 0.94 40 570.39 158.17 23.6 9.97 10.88 2 0.00 35.0 19951.22 8733.90 1841.87 0.95 41 580.36 114.72 23.6 9.97 10.88 2 0.00 35.0 14518.93 5774.62 1333.27 0.95 42 590.33 82.20 25.4 13.34 14.76 2 0.00 35.0 10515.07 2912.96 704.22 0.95 43 603.67 9.49 25.4 6.33 7.00 1 150.00 22.0 1243.32 0.00 146.93 1.01 X -S Area: 14899.77 Path Length: 413.55 X -S Weight: 1869064.75 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 4.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4.gmf Processed: 07 Jun 2018 18:27:10 DATA: Analysis 1 - Case 4 - East Side Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium aboveground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 383.00 Profile: 2 (2 543.00 Profile: 3 (3 200.00 Profile: 4 (2 540.00 Profile: 5 (2 543.00 Profile: 6 (3 100.00 Profile: 7 (2 543.00 Profile: 8 (7 100.00 543.00 points) 4659.00 points) 4662.00 points) 4598.00 points) 4662.00 points) 4659.00 points) 4598.00 points) 4598.00 points) 4595.00 4595.00 Slope Surface (6 points) 100.00 4598.00 730.00 4662.00 Material beneath: 1 - Overburden 392.00 4662.00 540.00 4662.00 Material beneath: 1 - Overburden 730.00 4662.00 Material beneath: 2 - Sand and Gravel 383.00 4659.00 540.00 4659.00 Material beneath: 5 - Slurry Wall 543.00 4662.00 Material beneath: 2 - Sand and Gravel 730.00 4659.00 Material beneath: 3 - Weathered Bedrock 200.00 4598.00 540.00 4598.00 Material beneath: 3 - Weathered Bedrock 730.00 4598.00 Material beneath: 4 - Stable Bedrock 200.00 4595.00 540.00 4595.00 Phreatic Surface (5 points) 730.00 4595.00 200.00 4598.00 392.00 4662.00 Page 1 540.01 4592.00 540.00 4662.00 542.99 4592.00 543.00 4662.00 Derr 4.gar 100.00 4598.00 Failure Surface 200.00 4598.00 540.00 4659.00 543.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 592.00 YR: 4662.00 Centre: XC: 287.84 YC: 5292.47 Radius: R: 700.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 4 - East Side Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 3.353 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.63 Results Summary - Lowest 99 Factor of Safety circles 730.00 4659.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 210.00 4601.33 582.00 4662.00 299.42 5223.89 628.95 2.627 <-- Critical Surface 2 208.95 4600.98 583.05 4662.00 296.80 5239.71 644.74 2.633 3 208.95 4600.98 582.00 4662.00 295.97 5239.82 644.74 2.640 4 201.58 4598.53 582.00 4662.00 274.30 5334.42 739.47 2.642 5 207.89 4600.63 583.05 4662.00 293.35 5255.61 660.53 2.643 6 206.84 4600.28 584.11 4662.00 290.73 5271.37 676.32 2.645 7 205.79 4599.93 585.16 4662.00 288.12 5287.12 692.11 2.647 8 207.89 4600.63 582.00 4662.00 292.52 5255.71 660.53 2.649 9 206.84 4600.28 583.05 4662.00 289.90 5271.48 676.32 2.650 10 207.89 4600.63 584.11 4662.00 294.18 5255.50 660.53 2.650 11 202.63 4598.88 582.00 4662.00 277.80 5318.65 723.68 2.651 12 205.79 4599.93 584.11 4662.00 287.28 5287.22 692.11 2.652 13 210.00 4601.33 586.21 4662.00 300.05 5239.75 644.74 2.657 14 204.74 4599.58 585.16 4662.00 284.66 5302.95 707.89 2.657 15 203.68 4599.23 582.00 4662.00 281.30 5302.85 707.89 2.658 16 205.79 4599.93 583.05 4662.00 286.43 5287.32 692.11 2.658 17 204.74 4599.58 584.11 4662.00 283.81 5303.04 707.89 2.658 18 202.63 4598.88 586.21 4662.00 278.57 5334.44 739.47 2.658 19 203.68 4599.23 585.16 4662.00 281.19 5318.75 723.68 2.659 20 208.95 4600.98 587.26 4662.00 297.45 5255.55 660.53 2.661 21 206.84 4600.28 582.00 4662.00 289.06 5271.58 676.32 2.663 22 201.58 4598.53 586.21 4662.00 275.09 5350.20 755.26 2.663 23 207.89 4600.63 588.32 4662.00 294.86 5271.33 676.32 2.664 Page 2 Derr 4.gar 24 210.00 4601.33 585.16 4662.00 299.23 5239.87 644.74 2.664 25 205.79 4599.93 582.00 4662.00 285.59 5287.42 692.11 2.664 26 202.63 4598.88 585.16 4662.00 277.71 5334.53 739.47 2.665 27 206.84 4600.28 589.37 4662.00 292.27 5287.09 692.11 2.665 28 199.47 4598.00 582.00 4662.00 267.59 5366.04 771.05 2.665 29 203.68 4599.23 584.11 4662.00 280.33 5318.84 723.68 2.665 30 204.74 4599.58 583.05 4662.00 282.96 5303.14 707.89 2.665 31 203.68 4599.23 586.21 4662.00 282.04 5318.66 723.68 2.667 32 208.95 4600.98 586.21 4662.00 296.63 5255.66 660.53 2.668 33 201.58 4598.53 585.16 4662.00 274.22 5350.29 755.26 2.669 34 206.84 4600.28 588.32 4662.00 291.43 5287.20 692.11 2.670 35 207.89 4600.63 587.26 4662.00 294.03 5271.44 676.32 2.670 36 202.63 4598.88 584.11 4662.00 276.85 5334.62 739.47 2.671 37 210.00 4601.33 584.11 4662.00 298.41 5239.98 644.74 2.671 38 205.79 4599.93 589.37 4662,00 288.84 5302.94 707.89 2.671. 39 203.68 4599.23 583.05 4662.00 279.48 5318.93 723.68 2.672 40 204.74 4599.58 582.00 4662.00 282.11 5303.23 707.89 2.672 41 200.53 4598.18 585.16 4662.00 270.72 5366.03 771.05 2.673 42 203.68 4599.23 590.42 4662.00 282.81 5334.46 739.47 2.674 43 195.26 4598.00 582.00 4662.00 264.22 5381.81 786.84 2.674 44 208.95 4600.98 585.16 4662.00 295.80 5255.77 660.53 2.674 45 201.58 4598.53 584.11 4662.00 273.35 5350.37 755.26 2.674 46 206.84 4600.28 587.26 4662.00 290.60 5287.30 692.11 2.675 47 207.89 4600.63 586.21 4662.00 293.20 5271.55 676.32 2.676 48 202.63 4598.88 583.05 4662.00 275.98 5334.70 739.47 2.676 49 196.32 4598.00 583.05 4662.00 265.27 5381.81 786.84 2.677 50 200.53 4598.18 584.11 4662.00 269.85 5366.11 771.05 2.677 51 203.68 4599.23 582.00 4662.00 278.62 5319.02 723.68 2.678 52 210.00 4601.33 583.05 4662.00 297.58 5240.09 644.74 2.678 53 210.00 4601.33 591.47 4662.00 301.53 5255.49 660.53 2.678 54 204.74 4599.58 589.37 4662.00 285.40 5318.75 723.68 2.679 55 197.37 4598.00 584.11 4662.00 266.32 5381.81 786.84 2.679 56 201.58 4598.53 583.05 4662.00 272.48 5350.45 755.26 2.680 57 202.63 4598.88 590.42 4662.00 279.36 5350.23 755.26 2.680 58 208.95 4600.98 584.11 4662.00 294.97 5255.88 660.53 2.681 59 203.68 4599.23 589.37 4662.00 281.96 5334.55 739.47 2.681 60 205.79 4599.93 587.26 4662.00 287.16 5303.13 707.89 2.681 61 196.32 4598.00 582.00 4662.00 264.39 5381.89 786.84 2.681 62 204.74 4599.58 588.32 4662.00 284.56 5318.85 723.68 2.682 63 202.63 4598.88 582.00 4662.00 275.12 5334.79 739.47 2.682 64 207.89 4600.63 585.16 4662.00 292.36 5271.65 676.32 2.682 65 208.95 4600.98 592.53 4662.00 298.96 5271.28 676.32 2.682 66 200.53 4598.18 583.05 4662.00 268.97 5366.18 771.05 2.682 67 198.42 4598.00 585.16 4662.00 267.37 5381.81 786.84 2.682 68 197.37 4598.00 583.05 4662.00 265.44 5381.89 786.84 2.684 69 205.79 4599.93 588.32 4662.00 288.00 5303.03 707.89 2.684 70 201.58 4598.53 582.00 4662.00 271.61 5350.54 755.26 2.684 71 210.00 4601.33 582.00 4662.00 296.76 5240.21 644.74 2.685 72 199.47 4598.00 586.21 4662.00 268.43 5381.81 786.84 2.685 73 210.00 4601.33 590.42 4662.00 300.71 5255.60 660.53 2.686 74 202.63 4598.88 589.37 4662.00 278.50 5350.32 755.26 2.686 75 206.84 4600.28 586.21 4662.00 289.76 5287.40 692.11 2.686 76 200.53 4598.18 582.00 4662.00 268.09 5366.26 771.05 2.686 77 198.42 4598.00 584.11 4662.00 266.50 5381.89 786.84 2.687 78 204.74 4599.58 590.42 4662.00 286.25 5318.66 723.68 2.688 79 203.68 4599.23 588.32 4662.00 281.10 5334.64 739.47. 2.688 Page 3 Derr 4.gar 80 206.84 4600.28 585.16 4662.00 291.57 5271.27 676.32 2.688 81 197.37 4598.00 582.00 4662.00 264.56 5381.97 786.84 2.688 82 206.84 4600.28 585.16 4662.00 288.92 5287.50 692.11 2.688 83 208.95 4600.98 591.47 4662.00 298.14 5271.39 676.32 2.689 84 204.74 4599.58 587.26 4662.00 283.71 5318.94 723.68 2.689 85 205.79 4599.93 586.21 4662.00 286.31 5303.23 707.89 2.689 86 207.89 4600.63 584.11 4662.00 291.53 5271.76 676.32 2.689 87 199.47 4598.00 585.16 4662.00 267.55 5381.89 786.84 2.689 88 206.84 4600.28 593.58 4662.00 293.00 5302.91 707.89 2.690 89 201.58 4598.53 589.37 4662.00 275.04 5366.07 771.05 2.690 90 207.89 4600.63 592.53 4662.00 295.57 5287.16 692.11 2.690 91 192.11 4598.00 582.00 4662.00 261.04 5397.67 802.63 2.690 92 198.42 4598.00 583.05 4662.00 265.61 5381.97 786.84 2.691 93 202.63 4598.88 588.32 4662.00 277.64 5350.41 755.26 2.692 94 200.53 4598.18 589.37 4662.00 271.56 5381.80 786.84 2.693 95 208.95 4600.98 582.00 4662.00 293.31 5256.10 660.53 2.693 96 193.16 4598.00 583.05 4662.00 262.10 5397.67 802.63 2.693 97 210.00 4601.33 589.37 4662.00 299.89 5255.71 660.53 2.693 98 199.47 4598.00 584.11 4662.00 266.67 5381.97 786.84 2.694 99 203.68 4599.23 587.26 4662.00 280.25 5334.73 739.47 2.694 Critical Failure Surface (circle 1) Intersects: XL: 210.00 YL: Centre: XC: 299.42 YC: Generated failure surface: (20 points) 210.00 4601.33 310.43 4595.04 410.58 4604.85 507.88 4630.50 4601.33 5223.89 XR: 582.00 YR: 4662.00 Radius: R: 628.95 229.98 4598.79 250.04 4596.89 270.15 4595.63 290.28 4595.01 330.57 4595.72 350.67 4597.04 370.72 4599.00 390.70 4601.60 430.35 4608.72 449.99 4613.23 469.47 4618.37 488.77 4624.13 526.78 4637.48 545.45 4645.06 563.86 4653.24 582.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 210.00 5.80 -7.3 5.02 5.06 2 0.00 35.0 725.05 0.00 149.55 1.04 2 215.02 30.20 -7.3 7.48 7.54 2 0.00 35.0 3774.44 540.13 519.59 1.04 3 222.50 55.99 -7.3 7.48 7.54 2 0.00 35.0 6998.53 1620.61 960.54 1.04 4 229.98 91.38 -5.4 8.32 8.35 2 0.00 35.0 11422.09 2987.59 1399.70 1.03 5 238.30 179.39 -5.4 11.74 11.79 3 100.00 18.0 22528.12 6241.27 1939.16 1.02 6 250.04 198.90 -3.6 10.05 10.07 3 100.00 18.0 25092.65 7108.14 2512.33 1.01 7 260.09 238.92 -3.6 10.05 10.07 3 100.00 18.0 30196.72 8637.80 3022.80 1.01 8 270.15 277.77 -1.7 10.07 10.07 3 100.00 18.0 35127.95 10067.13 3499.53 1.00 9 280.22 314.66 -1.8 10.07 10.07 3 100.00 18.0 39788.80 11395.73 3963.72 1.00 10 290.28 350.10 0.1 10.07 10.07 3 100.00 18.0 44242.80 12623.56 4391.50 1.00 11 300.36 383.77 0.1 10.07 10.07 3 100.00 18.0 48448.95 13750.30 4808.97 1.00 12 310.43 415.57 1.9 10.07 10.07 3 100.00 18.0 52395.31 14774.89 5187.71 1.00 13 320.50 445.95 1.9 10.07 10.07 3 100.00 18.0 56138.74 15697.74 5558.40 1.00 14 330.57 473.93 3.8 10.05 10.07 3 100.00 18.0 59555.35 16518.42 5888.07 0.99 15 340.62 500.98 3.8 10.05 10.07 3 100.00 18.0 62830.22 17237.52 6211.83 0.99 16 350.67 515.25 5.6 9.84 9.89 3 100.00 18.0 64481.86 17525.24 6490.06 0.99 17 360.51 558.38 5.6 10.21 10.26 2 0.00 35.0 69797.89 18695.77 6710.57 0.98 18 370.72 701.88 7.4 12.28 12.38 2 0.00 35.0 87734.48 23130.10 6967.03 0.97 19 383.00 455.51 7.4 7.70 7.76 2 0.00 35.0 56997.69 14734.38 7220.36 0.97 20 390.70 592.39 9.3 9.94 10.07 2 0.00 35.0 74227.68 19291.23 7234.98 0.97 21 400.64 576.27 9.3 9.94 10.07 2 0.00 35.0 72212.28 19392.91 7041.21 0.97 Page 4 Derr 4.gar. 22 410.58 555.37 11.1 9.88 10.07 2 0.00 35.0 69599.12 19392.43 6786.90 0.97 23 420.47 536.20 11.1 9.88 10.07 2 0.00 35.0 67202.55 19288.02 6556.00 0.97 24 430.35 511.98 12.9 9.82 10.07 2 0.00 35.0 64174.05 19081.13 6268.83 0.97 25 440.17 489.85 12.9 9.82 10.07 2 0.00 35.0 61408.03 18771.76 6001.57 0.97 26 449.99 462.50 14.8 9.74 10.07 2 0.00 35.0 57988.11 18358.72 5682.23 0.97 27 459.73 437.49 14.8 9.74 10.07 2 0.00 35.0 54861.22 17842.85 5378.90 0.97 28 469.47 407.29 16.6 9.65 10.07 2 0.00 35.0 51084.54 17224.96 5028.33 0.97 29 479.12 379.50 16.6 9.65 10.07 2 0.00 35.0 47610.75 16504.02 4689.69 0.97 30 488.77 346.71 18.4 9.56 10.07 2 0.00 35.0 43510.23 15681.33 4308.62 0.97 31 498.33 316.27 18.4 9.56 10.07 2 0.00 35.0 39705.21 14756.63 3935.43 0.97 32 507.88 281.18 20.3 9.45 10.07 2 0.00 35.0 35317.33 13729.67 3524.81 0.97 33 517.33 248.19 20.3 9.45 10.07 2 0.00 35.0 31194.14 12600.85 3117.56 0.97 34 526.78 153.19 22.1 6.61 7.13 2 0.00 35.0 19267.55 8190.58 2742.74 0.97 35 533.39 135.44 22.1 6.61 7.13 2 0.00 35.0 17049.39 7523.32 2430.76 0.97 36 540.00 55.63 22.1 3.00 3.24 5 0.00 45.0 6118.86 3140.38 1896.35 0.93 37 543.00 42.66 22.1 2.45 2.64 2 0.00 35.0 5376.92 2379.08 2070.75 0.97 38 545.45 137.12 23.9 9.21 10.07 2 0.00 35.0 17306.15 7476.57 1759.42 0.98 39 554.65 99.48 23.9 9.21 10.07 2 0.00 35.0 12600.73 4906.42 1275.40 0.98 40 563.86 70.15 25.8 11.93 13.25 2 0.00 35.0 8983.97 2381.49 687.72 0.98 41 575.79 9.32 25.8 6.21 6.90 1 150.00 22.0 1220.52 0.00 157.24 1.03 X -S Area: 13038.46 Path Length: 382.78 X -S Weight: 1636296.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 4 Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4 Full.gmf Processed: 07 Jun 2018 18:27:27 DATA: Analysis 1 - Case 4 - East Side — Full Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) — Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles). Profile: 1 383.00 Profile: 2 543.00 Profile: 3 200.00 Profile: 4 540.00 Profile: 5 543.00 Profile: 6 100.00 Profile: 7 543.00 Profile: 8 100.00 543.00 (3 points) Material beneath: 1 - Overburden 4659.00 392.00 4662.00 540.00 (2 points) Material beneath: 1 - Overburden 4662.00 730.00 4662.00 (3 points) Material beneath: 2 - Sand and Gravel 4598.00 383.00 4659.00 540.00 (2 points) Material beneath: 5 - Slurry Wall 4662.00 543.00 4662.00 (2 points) Material beneath: 2 - Sand 4659.00 730.00 4659.00 (3 points) Material beneath: 3 - Weathered 4598.00 200.00 4598.00 (2 points) Material beneath: 3 - Weathered 4598.00 730.00 4598.00 (7 points) Material beneath: 4 - Stable 4595.00 200.00 4595.00 4595.00 730.00 4595.00 Slope Surface (6 points) 100.00 730.00 and Gravel Bedrock 540.00 Bedrock 4662.00 4659.00 4598.00 Bedrock 540.00 4595.00 4598.00 200.00 4598.00 392.00 4662.00 4662.00 Phreatic Surface (4 points) 540.01 4592.00 540.00 4662.00 542.99 4592.00 543.00 4662.00 Page 1 Derr 4 Full.gar 100.00 4659.00 540.00 4659.00 Failure Surface 543.00 4659.00 730.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 592.00 YR: 4662.00 Centre: XC: 287.84 YC: 5292.47 Radius: R: 700.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 4 - East Side - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 5.184 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 3.69 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 201.58 4598.53 582.00 4662.00 274.30 5334.42 739.47 3.690 <-- Critical Surface 2 210.00 4601.33 582.00 4662.00 299.42 5223.89 628.95 3.706 3 199.47 4598.00 582.00 4662.00 267.59 5366.04 771.05 3.708 4 202.63 4598.88 582.00 4662.00 277.80 5318.65 723.68 3.714 5 208.95 4600.98 583.05 4662.00 296.80 5239.71 644.74 3.714 6 208.95 4600.98 582.00 4662.00 295.97 5239.82 644.74 3.714 7 195.26 4598.00 582.00 4662.00 264.22 5381.81 786.84 3.715 8 207.89 4600.63 582.00 4662.00 292.52 5255.71 660.53 3.719 9 207.89 4600.63 583.05 4662.00 293.35 5255.61 660.53 3.720 10 206.84 4600.28 583.05 4662.00 289.90 5271.48 676.32 3.722 11 196.32 4598.00 582.00 4662.00 264.39 5381.89 786.84 3.722 12 206.84 4600.28 584.11 4662.00 290.73 5271.37 676.32 3.724 13 196.32 4598.00 583.05 4662.00 265.27 5381.81 786.84 3.724 14 205.79 4599.93 582.00 4662.00 285.59 5287.42 692.11 3.725 15 205.79 4599.93 583.05 4662.00 286.43 5287.32 692.11 3.726 16 205.79 4599.93 584.11 4662.00 287.28 5287.22 692.11 3.726 17 205.79 4599.93 585.16 4662.00 288.12 5287.12 692.11 3.728 18 204.74 4599.58 584.11 4662.00 283.81 5303.04 707.89 3.728 19 192.11 4598.00 582.00 4662.00 261.04 5397.67 802.63 3.729 20 197.37 4598.00 582.00 4662.00 264.56 5381.97 786.84 3.729 21 204.74 4599.58 583.05 4662.00 282.96 5303.14 707.89 3.729 22 200.53 4598.18 582.00 4662.00 268.09 5366.26 771.05 3.730 23 204.74 4599.58 582.00 4662.00 282.11 5303.23 707.89 3.730 Page 2 Derr 4 Full gar 24 206.84 4600.28 582.00 4662.00 289.06 5271.58 676.32 3.730 25 201.58 4598.53 582.00 4662.00 271.61 5350.54 755.26 3.731 26 203.68 4599.23 582.00 4662.00 278.62 5319.02 723.68 3.731 27 202.63 4598.88 582.00 4662.00 275.12 5334.79 739.47 3.732 28 197.37 4598.00 583.05 4662.00 265.44 5381.89 786.84 3.732 29 203.68 4599.23 585.16 4662.00 281.19 5318.75 723.68 3.732 30 203.68 4599.23 583.05 4662.00 279.48 5318.93 723.68 3.732 31 203.68 4599.23 584.11 4662.00 280.33 5318.84 723.68 3.732 32 200.53 4598.18 583.05 4662.00 268.97 5366.18 771.05 3.732 33 201.58 4598.53 583.05 4662.00 272.48 5350.45 755.26 3.733 34 203.68 4599.23 582.00 4662.00 281.30 5302.85 707.89 3.733 35 202.63 4598.88 583.05 4662.00 275.98 5334.70 739.47 3.733 36 197.37 4598.00 584.11 4662.00 266.32 5381.81 786.84 3.734 37 202.63 4598.88 584.11 4662.00 276.85 5334.62 739.47 3.734 38 202.63 4598.88 585.16 4662.00 277.71 5334.53 739.47 3.734 39 200.53 4598.18 584.11 4662.00 269.85 5366.11 771.05 3.735 40 201.58 4598.53 584.11 4662.00 273.35 5350.37 755.26 3.735 41 202.63 4598.88 586.21 4662.00 278.57 5334.44 739.47 3.735 42 204.74 4599.58 585.16 4662.00 284.66 5302.95 707.89 3.735 43 193.16 4598.00 582.00 4662.00 261.22 5397.74 802.63 3.736 44 198.42 4598.00 582.00 4662.00 264.73 5382.04 786.84 3.736 45 201.58 4598.53 585.16 4662.00 274.22 5350.29 755.26 3.736 46 200.53 4598.18 585.16 4662.00 270.72 5366.03 771.05 3.736 47 201.58 4598.53 586.21 4662.00 275.09 5350.20 755.26 3.737 48 193.16 4598.00 583.05 4662.00 262.10 5397.67 802.63 3.738 49 198.42 4598.00 583.05 4662.00 265.61 5381.97 786.84 3.739 50 198.42 4598.00 584.11 4662.00 266.50 5381.89 786.84 3.741 51 194.21 4598.00 582.00 4662.00 261.39 5397.82 802.63 3.742 52 199.47 4598.00 582.00 4662.00 264.90 5382.12 786.84 3.742 53 207.89 4600.63 584.11 4662.00 294.18 5255.50 660.53 3.743 54 198.42 4598.00 585.16 4662.00 267.37 5381.81 786.84 3.744 55 194.21 4598.00 583.05 4662.00 262.27 5397.74 802.63 3.745 56 199.47 4598.00 583.05 4662.00 265.79 5382.04 786.84 3.746 57 194.21 4598.00 584.11 4662.00 263.15 5397.67 802.63 3.748 58 199.47 4598.00 584.11 4662.00 266.67 5381.97 786.84 3.749 59 190.00 4598.00 582.00 4662.00 258.07 5413.59 818.42 3.749 60 195.26 4598.00 582.00 4662.00 261.56 5397.89 802.63 3.749 61 199.47 4598.00 585.16 4662.00 267.55 5381.89 786.84 3.751 62 195.26 4598.00 583.05 4662.00 262.44 5397.82 802.63 3.752 63 190.00 4598.00 583.05 4662.00 258.95 5413.51 818.42 3.752 64 199.47 4598.00 586.21 4662.00 268.43 5381.81 786.84 3.753 65 190.00 4598.00 584.11 4662.00 259.83 5413.44 818.42 3.754 66 195.26 4598.00 584.11 4662.00 263.32 5397.74 802.63 3.755 67 196.32 4598.00 582.00 4662.00 261.72 5397.96 802.63 3.755 68 191.05 4598.00 582.00 4662.00 258.24 5413.66 818.42 3.755 69 195.26 4598.00 585.16 4662.00 264.20 5397.67 802.63 3.757 70 203.68 4599.23 586.21 4662.00 282.04 5318.66 723.68 3.758 71 196.32 4598.00 583.05 4662.00 262.61 5397.89 802.63 3.758 72 191.05 4598.00 583.05 4662.00 259.12 5413.59 818.42 3.758 73 210.00 4601.33 586.21 4662.00 300.05 5239.75 644.74 3.761 74 191.05 4598.00 584.11 4662.00 260.00 5413.51 818.42 3.761 75 197.37 4598.00 582.00 4662.00 261.89 5398.03 802.63 3.761 76 196.32 4598.00 584.11 4662.00 263.49 5397.82 802.63 3.762 77 210.00 4601.33 585.16 4662.00 299.23 5239.87 644.74 3.762 78 192.11 4598.00 582.00 4662.00 258.41 5413.73 818.42 3.762 79 210.00 4601.33 582.00 4662.00 296.76 5240.21 644.74 3.762 Page 3 Derr 4 Full.gar 80 210.00 4601.33 584.11 4662.00 298.41 5239.98 644.74 81 210.00 4601.33 583.05 4662.00 297.58 5240.09 644.74 82 200.53 4598.18 582.00 4662.00 265.40 5382.34 786.84 83 191.05 4598.00 585.16 4662.00 260.88 5413.44 818.42 84 196.32 4598.00 585.16 4662.00 264.37 5397.74 802.63 85 197.37 4598.00 583.05 4662.00 262.78 5397.96 802.63 86 192.11 4598.00 583.05 4662.00 259.29 5413.66 818.42 87 208.95 4600.98 582.00 4662.00 293.31 5256.10 660.53 88 200.53 4598.18 583.05 4662.00 266.29 5382.26 786.84 89 201.58 4598.53 582.00 4662.00 268.93 5366.63 771.05 90 196.32 4598.00 586.21 4662.00 265.25 5397.67 802.63 91 208.95 4600.98 584.11 4662.00 294.97 5255.88 660.53 92 198.42 4598.00 582.00 4662.00 262.05 5398.11 802.63 93 208.95 4600.98 585.16 4662.00 295.80 5255.77 660.53 94 208.95 4600.98 587.26 4662.00 297.45 5255.55 660.53 95 208.95 4600.98 586.21 4662.00 296.63 5255.66 660.53 96 192.11 4598.00 584.11 4662.00 260.17 5413.59 818.42 97 193.16 4598.00 582.00 4662.00 258.57 5413.80 818.42 98 197.37 4598.00 584.11 4662.00 263.66 5397.89 802.63 99 200.53 4598.18 584.11 4662.00 267.17 5382.19 786.84 Critical Failure Surface (circle 1) 3.762 3.762 3.763 3.764 3.764 3.765 3.765 3.765 3.767 3.767 3.767 3.767 3.767 3.768 3.768 3.768 3.768 3.768 3.768 3.770 Intersects: XL: 201.58 YL: 4598.53 XR: 582.00 YR: 4662.00 Centre: XC: 274.30 YC: 5334.42 Radius: R: 739.47 Generated failure surface: (20 points) 201.58 4598.53 222.04 4596.79 242.54 4595.62 263.07 4595.03 283.61 4595.00 304.14 4595.54 324.64 4596.66 345.11 4598.34 365.52 4600.59 385.86 4603.41 406.12 4606.79 426.27 4610.73 446.31 4615.23 466.21 4620.28 485.97 4625.88 505.56 4632.03 524.98 4638.73 544.20 4645.96 563.21 4653.72 582.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 43 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 201.58 8.05 -4.8 6.21 6.23 2 0.00 35.0 1006.54 23607.62 3872.52 1.02 2 207.79 29.12 -4.8 7.13 7.15 3 100.00 18.0 3674.55 27363.89 4090.12 1.01 3 214.91 50.37 -4.8 7.13 7.15 3 100.00 18.0 6399.05 27633.78 4325.57 1.01 4 222.04 108.22 -3.3 10.25 10.27 3 100.00 18.0 13773.74 40045.81 4589.92 1.01 5 232.29 149.23 -3.3 10.25 10.27 3 100.00 18.0 18995.75 40419.61 4887.41 1.01 6 242.54 189.02 -1.7 10.26 10.27 3 100.00 18.0 24042.42 40701.12 5161.11 1.00 7 252.81 227.19 -1.7 10.26 10.27 3 100.00 18.0 28862.90 40892.21 5417.93 1.00 8 263.07 264.03 -0.1 10.27 10.27 3 100.00 18.0 33493.19 40992.35 5649.93 1.00 9 273.34 299.31 -0.1 10.27 10.27 3 100.00 18.0 37905.53 41000.92 5866.10 1.00 10 283.61 333.01 1.5 10.26 10.27 3 100.00 18.0 42096.04 40918.30 6056.32 1.00 11 293.87 365.33 1.5 10.26 10.27 3 100.00 18.0 46092.02 40743.87 6231.72 1.00 12 304.14 395.74 3.1 10.25 10.27 3 100.00 18.0 49825.11 40479.43 6380.25 1.00 13 314.39 425.08 3.1 10.25 10.27 3 100.00 18.0 53400.75 40122.66 6514.92 1.00 14 324.64 358.63 4.7 8.17 8.19 3 100.00 18.0 44960.26 31704.42 6612.33 1.00 15 332.81 375.38 4.7 8.17 8.19 3 100.00 18.0 46965.98 31361.14 6687.23 1.00 16 340.97 196.39 4.7 4.13 4.15 2 0.00 35.0 24549.12 15743.61 6724.25 0.99 17 345.11 501.81 6.3 10.21 10.27 2 0.00 35.0 62725.81 38505.14 6764.95 0.99 18 355.31 525.05 6.3 10.21 10.27 2 0.00 35.0 65630.70 37784.45 6834.36 0.99 19 365.52 467.04 7.9 8.74 8.82 2 0.00 35.0 58379.57 31827.17 6866.46 0.98 20 374.26 481.93 7.9 8.74 8.82 2 0.00 35.0 60240.82 31160.97 6894.87 0.98 21 - 383.00 160.99 7.9 2.86 2.89 2 0.00 35.0 20132.38 10055.78 6945.57 0.98 Page 4 Derr 4 Fu1l.gar 22 385.86 350.28 9.5 6.14 6.22 2 0.00 35.0 43857.72 21391.85 7030.46 0.98 23 392.00 402.21 9.5 7.06 7.16 2 0.00 35.0 50402.73 24104.68 7024.96 0.98 24 399.06 393.89 9.5 7.06 7.16 2 0.00 35.0 49363.59 23579.04 6879.96 0.98 25 406.12 546.47 11.1 10.08 10.27 2 0.00 35.0 68489.97 32823.47 6667.87 0.98 26 416.19 526.61 11.1 10.08 10.27 2 0.00 35.0 66008.25 31560.84 6426.04 0.98 27 426.27 502.42 12.7 10.02 10.27 2 0.00 35.0 62982.26 30209.19 6150.00 0.98 28 436.29 479.88 12.7 10.02 10.27 2 0.00 35.0 60165.20 28767.90 5874.56 0.98 29 446.31 452.93 14.2 9.95 10.27 2 0.00 35.0 56795.87 27237.73 5566.58 0.98 30 456.26 427.79 14.2 9.95 10.27 2 0.00 35.0 53652.61 25618.82 5257.99 0.98 31 466.21 398.29 15.8 9.88 10.27 2 0.00 35.0 49963.74 23911.64 4918.57 0.99 32 476.09 370.61 15.8 9.88 10.27 2 0.00 35.0 46504.20 22116.49 4577.31 0.99 33 485.97 338.75 17.4 9.80 10.27 2 0.00 35.0 42520.25 20232.96 4207.16 0.99 34 495.76 308.63 17.4 9.80 10.27 2 0.00 35.0 38754.63 18262.71 3833.58 0.99 35 505.56 274.65 19.0 9.71 10.27 2 0.00 35.0 34505.47 16205.42 3433.28 0.99 36 515.27 242.17 19.0 9.71 10.27 2 0.00 35.0 30445.38 14061.79 3027.86 0.99 37 524.98 164.22 20.6 7.51 8.03 2 0.00 35.0 20663.11 9445.81 2645.78 1.00 38 532.49 143.00 20.6 7.51 8.03 2 0.00 35.0 18010.18 8030.90 2304.41 1.00 39 540.00 51.18 20.6 3.00 3.21 5 0.00 45.0 5629.50 2811.73 1784.10 0.97 40 543.00 146.23 22.0 10.11 10.90 2 0.00 35.0 18460.89 7802.14 1747.72 1.00 41 553.11 104.55 22.2 10.11 10.91 2 0.00 35.0 13251.09 5003.51 1250.03 1.00 42 563.21 67.63 23.8 11.99 13.10 2 0.00 35.0 8668.89 2159.61 680.15 1.01 43 575.20 10.21 23.8 6.80 7.44 1 150.00 22.0 1337.00 0.00 170.35 1.04 X -S Area: 12613.49 Path Length: 390.18 X -S Weight: 1583584.88 Page 5 GALENA 7.1 Analysis Results Derr 4 EQ.gar Version: 7.10.3.02 Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4 EQ.gmf Processed: 07 Jun 2018 18:27:44 DATA: Analysis 1 - Case 4 - East Side - Pseudostatic Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) Material beneath: 1 - Overburden 383.00 4659.00 392.00 4662.00 540.00 4662.00 Profile: 2 (2 points) Material beneath: 1 - Overburden 543.00 4662.00 730.00 4662.00 Profile: 3 (3 points) Material beneath: 2 - Sand and Gravel 200.00 4598.00 383.00 4659.00 540.00 4659.00 Profile: 4 (2 points) Material beneath: 5 - Slurry Wall 540.00 4662.00 543.00 4662.00 Profile: 5 (2 points) Material beneath: 2 - Sand and Gravel 543.00 4659.00 730.00 4659.00 Profile: 6 (3 points) Material beneath: 3 - Weathered Bedrock 100.00 4598.00 200.00 4598.00 540.00 4598.00 Profile: 7 (2 points) Material beneath: 3 - Weathered Bedrock 543.00 4598.00 730.00 4598.00 Profile: 8 (7 points) Material beneath: 4 - Stable Bedrock 100.00 4595.00 200.00 4595.00 540.00 4595.00 543.00 4595.00 730.00 4595.00 Slope Surface (6 points) 100.00 4598.00 730.00 4662.00 Phreatic Surface (5 points) 200.00 4598.00 392.00 4662.00 Page 1 540.01 4592.00 540.00 4662.00 542.99 4592.00 543.00 4662.00 Derr -4 EQ.gar 100.00 4598.00 Failure Surface 200.00 4598.00 540.00 4659.00 543.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 592.00 YR: 4662.00 Centre: XC: 287.84 YC: 5292.47 Radius: R: 700.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 4 - East Side - Pseudostatic Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.317 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 1.80 Results Summary - Lowest 99 Factor of Safety circles 730.00 4659.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 210.00 4601.33 582.00 4662.00 299.42 5223.89 628.95 1.802 <-- Critical Surface 2 208.95 4600.98 583.05 4662.00 296.80 5239.71 644.74 1.806 3 208.95 4600.98 582.00 4662.00 295.97 5239.82 644.74 1.813 4 210.00 4601.33 586.21 4662.00 300.05 5239.75 644.74 1.815 5 207.89 4600.63 583.05 4662.00 293.35 5255.61 660.53 1.815 6 206.84 4600.28 584.11 4662.00 290.73 5271.37 676.32 1.816 7 208.95 4600.98 587.26 4662.00 297.45 5255.55 660.53 1.818 8 205.79 4599.93 585.16 4662.00 288.12 5287.12 692.11 1.818 9 207.89 4600.63 584.11 4662.00 294.18 5255.50 660.53 1.818 10 210.00 4601.33 591.47 4662.00 301.53 5255.49 660.53 1.820 11 207.89 4600.63 588.32 4662.00 294.86 5271.33 676.32 1.820 12 206.84 4600.28 589.37 4662.00 292.27 5287.09 692.11 1.821 13 207.89 4600.63 582.00 4662.00 292.52 5255.71 660.53 1.822 14 210.00 4601.33 585.16 4662.00 299.23 5239.87 644.74 1.822 15 206.84 4600.28 583.05 4662.00 289.90 5271.48 676.32 1.822 16 208.95 4600.98 592.53 4662.00 298.96 5271.28 676.32 1.822 17 205.79 4599.93 584.11 4662.00 287.28 5287.22 692.11 1.823 18 208.95 4600.98 586.21 4662.00 296.63 5255.66 660.53 1.825 19 207.89 4600.63 587.26 4662.00 294.03 5271.44 676.32 1.826 Page 2 Derr 4 EQ.gar 20 206.84 4600.28 588.32 4662.00 291.43 5287.20 692.11 1.826 21 210.00 4601.33 590.42 4662.00 300.71 5255.60 660.53 1.827 22 204.74 4599.58 585.16 4662.00 284.66 5302.95 707.89 1.827 23 205.79 4599.93 589.37 4662.00 288.84 5302.94 707.89 1.827 24 201.58 4598.53 582.00 4662.00 274.30 5334.42 739.47 1.828 25 210.00 4601.33 584.11 4662.00 298.41 5239.98 644.74 1.829 26 208.95 4600.98 591.47 4662.00 298.14 5271.39 676.32 1.829 27 205.79 4599.93 583.05 4662.00 286.43 5287.32 692.11 1.830 28 204.74 4599.58 584.11 4662.00 283.81 5303.04 707.89 1.830 29 202.63 4598.88 586.21 4662.00 278.57 5334.44 739.47 1.830 30 206.84 4600.28 593.58 4662.00 293.00 5302.91 707.89 1.830 31 203.68 4599.23 585.16 4662.00 281.19 5318.75 723.68 1.830 32 207.89 4600.63 592.53 4662.00 295.57 5287.16 692.11 1.830 33 210.00 4601.33 595.68 4662.00 302.23 5271.33 676.32 1.831 34 208.95 4600.98 585.16 4662.00 295.80 5255.77 660.53 1.831 35 203.68 4599.23 590.42 4662.00 282.81 5334.46 739.47 1.831 36 206.84 4600.28 587.26 4662.00 290.60 5287.30 692.11 1.832 37 207.89 4600.63 586.21 4662.00 293.20 5271.55 676.32 1.832 38 202.63 4598.88 582.00 4662.00 277.80 5318.65 723.68 1.833 39 206.84 4600.28 582.00 4662.00 289.06 5271.58 676.32 1.834 40 203.68 4599.23 586.21 4662.00 282.04 5318.66 723.68 1.834 41 210.00 4601.33 589.37 4662.00 299.89 5255.71 660.53 1.834 42 208.95 4600.98 596.74 4662.00 299.68 5287.11 692.11 1.834 43 207.89 4600.63 597.79 4662.00 297.14 5302.88 707.89 1.834 44 210.00 4601.33 600.95 4662.00 303.77 5287.06 692.11 1.834 45 204.74 4599.58 589.37 4662.00 285.40 5318.75 723.68 1.835 46 203.68 4599.23 582.00 4662.00 281.30 5302.85 707.89 1.835 47 201.58 4598.53 586.21 4662.00 275.09 5350.20 755.26 1.836 48 206.84 4600.28 592.53 4662.00 292.17 5303.01 707.89 1.836 49 208.95 4600.98 590.42 4662.00 297.31 5271.50 676.32 1.836 50 210.00 4601.33 583.05 4662.00 297.58 5240.09 644.74 1.836 51 205.79 4599.93 593.58 4662.00 289.60 5318.74 723.68 1.836 52 205.79 4599.93 582.00 4662.00 285.59 5287.42 692.11 1.836 53 202.63 4598.88 585.16 4662.00 277.71 5334.53 739.47 1.836 54 207.89 4600.63 591.47 4662.00 294.74 5287.27 692.11 1.837 55 203.68 4599.23 584.11 4662.00 280.33 5318.84 723.68 1.837 56 204.74 4599.58 583.05 4662.00 282.96 5303.14 707.89 1.837 57 202.63 4598.88 590.42 4662.00 279.36 5350.23 755.26 1.837 58 208.95 4600.98 584.11 4662.00 294.97 5255.88 660.53 1.838 59 205.79 4599.93 588.32 4662.00 288.00 5303.03 707.89 1.838 60 205.79 4599.93 587.26 4662.00 287.16 5303.13 707.89 1.838 61 203.68 4599.23 589.37 4662.00 281.96 5334.55 739.47 1.838 62 210.00 4601.33 594.63 4662.00 301.41 5271.44 676.32 1.838 63 207.89 4600.63 585.16 4662.00 292.36 5271.65 676.32 1.839 64 204.74 4599.58 588.32 4662.00 284.56 5318.85 723.68 1.839 65 203.68 4599.23 594.63 4662.00 283.61 5350.25 755.26 1.839 66 204.74 4599.58 590.42 4662.00 286.25 5318.66 723.68 1.839 67 208.95 4600.98 595.68 4662.00 298.86 5287.22 692.11 1.840 68 206.84 4600.28 597.79 4662.00 293.77 5318.73 723.68 1.840 69 210.00 4601.33 599.89 4662.00 302.95 5287.17 692.11 1.841 70 210.00 4601.33 588.32 4662.00 299.07 5255.83 660.53 1.841 71 206.84 4600.28 591.47 4662.00 291.33 5303.12 707.89 1.841 72 201.58 4598.53 585.16 4662.00 274.22 5350.29 755.26 1.841 73 207.89 4600.63 596.74 4662.00 296.31 5302.98 707.89 1.841 74 206.84 4600.28 586.21 4662.00 289.76 5287.40 692.11 1.842 75 204.74 4599.58 593.58 4662.00 286.18 5334.55 739.47 1.842 Page 3 Derr 4 EQ.gar 76 208.95 4600.98 589.37 4662.00 296.49 5271.61 676.32 1.842 77 208.95 4600.98 600.95 4662.00 300.43 5302.94 707.89 1.842 78 202.63 4598.88 584.11 4662.00 276.85 5334.62 739.47 1.843 79 210.00 4601.33 582.00 4662.00 296.76 5240.21 644.74 1.843 80 207.89 4600.63 590.42 4662.00 293.91 5287.37 692.11 1.843 81 207.89 4600.63 602.00 4662.00 297.91 5318.70 723.68 1.843 82 204.74 4599.58 598.84 4662.00 287.84 5350.26 755.26 1.843 83 203.68 4599.23 583.05 4662.00 279.48 5318.93 723.68 1.844 84 202.63 4598.88 589.37 4662.00 278.50 5350.32 755.26 1.844 85 204.74 4599.58 582.00 4662.00 282.11 5303.23 707.89 1.844 86 202.63 4598.88 594.63 4662.00 280.18 5366.02 771.05 1.845 87 206.84 4600.28 596.74 4662.00 292.93 5318.83 723.68 1.845 88 203.68 4599.23 588.32 4662.00 281.10 5334.64 739.47 1.845 89 206.84 4600.28 585.16 4662.00 291.57 5271.27 676.32 1.845 90 205.79 4599.93 597.79 4662.00 290.38 5334.55 739.47 1.845 91 206.84 4600.28 585.16 4662.00 288.92 5287.50 692.11 1.845 92 204.74 4599.58 594.63 4662.00 287.03 5334.46 739.47 1.845 93 210.00 4601.33 593.58 4662.00 300.59 5271.56 676.32 1.846 94 204.74 4599.58 587.26 4662.00 283.71 5318.94 723.68 1.846 95 205.79 4599.93 586.21 4662.00 286.31 5303.23 707.89 1.846 96 207.89 4600.63 584.11 4662.00 291.53 5271.76 676.32 1.846 97 200.53 4598.18 585.16 4662.00 270.72 5366.03 771.05 1.846 98 203.68 4599.23 593.58 4662.00 282.76 5350.34 755.26 1.846 99 205.79 4599.93 592.53 4662.00 288.76 5318.84 723.68 1.846 Critical Failure Surface (circle 1) Intersects: XL: 210.00 YL: 4601.33 XR: 582.00 YR: 4662.00 Centre: XC: 299.42 YC: 5223.89 Radius: R: 628.95 Generated failure surface: (20 points) 210.00 4601.33 229.98 4598.79 250.04 4596.89 270.15 4595.63 290.28 4595.01 310.43 4595.04 330.57 4595.72 350.67 4597.04 370.72 4599.00 390.70 4601.60 410.58 4604.85 430.35 4608.72 449.99 4613.23 469.47 4618.37 488.77 4624.13 507.88 4630.50 526.78 4637.48 545.45 4645.06 563.86 4653.24 582.00 4662.00 Slice Geometry and Properties — Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 210.00 5.80 -7.3 5.02 5.06 2 0.00 35.0 725.05 0.00 151.99 1.06 2 215.02 30.20 -7.3 7.48 7.54 2 0.00 35.0 3774.44 540.13 526.92 1.06 3 222.50 55.99 -7.3 7.48 7.54 2 0.00 35.0 6998.53 1620.61 972.74 1.06 4 229.98 91.38 -5.4 8.32 8.35 2 0.00 35.0 11422.09 2987.59 1412.23 1.04 5 238.30 179.39 -5.4 11.74 11.79 3 100.00 18.0 22528.12 6241.27 1948.56 1.02 6 250.04 198.90 -3.6 10.05 10.07 3 100.00 18.0 25092.65 7108.14 2519.92 1.01 7 260.09 238.92 -3.6 10.05 10.07 3 100.00 18.0 30196.72 8637.80 3031.68 1.01 8 270.15 277.77 -1.7 10.07 10.07 3 100.00 18.0 35127.95 10067.13 3504.42 1.01 9 280.22 314.66 -1.8 10.07 10.07 3 100.00 18.0 39788.80 11395.73 3969.18 1.01 10 290.28 350.10 0.1 10.07 10.07 3 100.00 18.0 44242.80 12623.56 4391.22 1.00 11 300.36 383.77 0.1 10.07 10.07 3 100.00 18.0 48448.95 13750.30 4808.65 1.00 12 310.43 415.57 1.9 10.07 10.07 3 100.00 18.0 52395.31 14774.89 5180.09 0.99 13 320.50 445.95 1.9 10.07 10.07 3 100.00 18.0 56138.74 15697.74 5550.26 0.99 14 330.57 473.93 3.8 10.05 10.07 3 100.00 18.0 59555.35 16518.42 5871.33 0.99 15 340.62 500.98 3.8 10.05 10.07 3 100.00 18.0 62830.22 17237.52 6194.17 0.99 16 350.67 515.25 5.6 9.84 9.89 3 100.00 18.0 64481.86 17525.24 6462.66 0.99 17 360.51 558.38 5.6 10.21 10.26 2 0.00 35.0 69797.89 18695.77 6654.29 0.97 Page 4 Derr 4 EQ.gar 18 370.72 701.88 7.4 12.28 12.38 2 0.00 35.0 87734.48 23130.10 6889.80 0.96 19 383.00 455.51 7.4 7.70 7.76 2 0.00 35.0 56997.69 14734.38 7139.74 0.96 20 390.70 592.39 9.3 9.94 10.07 2 0.00 35.0 74227.68 19291.23, 7135.36 0.95 21 400.64 576.27 9.3 9.94 10.07 2 0.00 35.0 72212.28 19392.91 6945.44 0.95 22 410.58 555.37 11.1 9.88 10.07 2 0.00 35.0 69599.12 19392.43 6678.72 0.95 23 420.47 536.20 11.1 9.88 10.07 2 0.00 35.0 67202.55 19288.02 6452.73 0.95 24 430.35 511.98 12.9 9.82 10.07 2 0.00 35.0 64174.05 19081.13 6156.25 0.94 25 440.17 489.85 12.9 9.82 10.07 2 0.00 35.0 61408.03 18771.76 5895.07 0.94 26 449.99 462.50 14.8 9.74 10.07 2 0.00 35.0 57988.11 18358.72 5569.55 0.94 27 459.73 437.49 14.8 9.74 10.07 2 0.00 35.0 54861.22 17842.85 5273.58 0.94 28 469.47 407.29 16.6 9.65 10.07 2 0.00 35.0 51084.54 17224.96 4920.08 0.94 29 479.12 379.50 16.6 9.65 10.07 2 0.00 35.0 47610.75 16504.02 4590.15 0.94 30 488.77 346.71 18.4 9.56 10.07 2 0.00 35.0 43510.23 15681.33 4209.47 0.93 31 498.33 316.27 18.4 9.56 10.07 2 0.00 35.0 39705.21 14756.63 3846.42 0.93 32 507.88 281.18 20.3 9.45 10.07 2 0.00 35.0 35317.33 13729.67 3439.56 0.93 33 517.33 248.19 20.3 9.45 10.07 2 0.00 35.0 31194.14 12600.85 3043.96 0.93 34 526.78 153.19 22.1 6.61 7.13 2 0.00 35.0 19267.55 8190.58 2674.44 0.93 35 533.39 135.44 22.1 6.61 7.13 2 0.00 35.0 17049.39 7523.32 2371.81 0.93 36 540.00 55.63 22.1 3.00 3.24 5 0.00 45.0 6118.86 3140.38 1842.80 0.88 37 543.00 42.66 22.1 2.45 2.64 2 0.00 35.0 5376.92 2379.08 2020.64 0.93 38 545.45 137.12 23.9 9.21 10.07 2 0.00 35.0 17306.15 7476.57 1712.39 0.93 39 554.65 99.48 23.9 9.21 10.07 2 0.00 35.0 12600.73 4906.42 1238.96 0.93 40 563.86 70.15 25.8 11.93 13.25 2 0.00 35.0 8983.97 2381.49 662.50 0.94 41 575.79 9.32 25.8 6.21 6.90 1 150.00 22.0 1220.52 0.00 141.02 1.00 X -S Area: 13038.46 Path Length: 382.78 X -S Weight: 1636296.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 4 EQ Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 4 EQ Full.gmf Processed: 07 Jun 2018 18:28:14 DATA: Analysis 1 - Case 4 - East Side - Pseudostatic - Full Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) -- Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 383.00 4659.00 Profile: 2 (2 points) 543.00 4662.00 Profile: 3 (3 points) 200.00 4598.00 Profile: 4 (2 points) 540.00 4662.00 Profile: 5 (2 points) 543.00 4659.00 Profile: 6 (3 points) 100.00 4598.00 Profile: 7 (2 points) 543.00 4598.00 Profile: 8 (7 points) 100.00 4595.00 543.00 4595.00 Slope Surface (6 points) 100.00 4598.00 730.00 4662.00 Material beneath: 1 - Overburden 392.00 4662.00 540.00 Material beneath: 1 - Overburden 730.00 4662.00 Material beneath: 2 - Sand and Gravel 383.00 4659.00 540.00 Material beneath: 5 - Slurry Wall 543.00 4662.00 Material beneath: 2 - Sand and Gravel 730.00 4659.00 Material beneath: 3 - Weathered Bedrock 200.00 4598.00 540.00 Material beneath: 3 - Weathered Bedrock 730.00 4598.00 Material beneath: 4 - Stable Bedrock 200.00 4595.00 540.00 730.00 4595.00 Phreatic Surface (4 points) 200.00 4598.00 4662.00 4659.00 4598.00 4595.00 392.00 4662.00 540.01 4592.00 540.00 4662.00 542.99 4592.00 543.00 4662.00 Page 1 Derr 4 EQ Full.gar 100.00 4659.00 Failure Surface 540.00 4659.00 543.00 4659.00 730.00 4659.0O Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4598.00 XR: 592.00 YR: 4662.00 Centre: XC: 287.84 YC: 5292.47 Radius: R: 700.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 20.00 20.00 300.00 20 20 20 RESULTS: Analysis 1 - Case 4 - East Side - Pseudostatic Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.849 There were: 8001 successful analyses from a total of 8001 trial surfaces Critical (minimum) Factor of Safety: 2.01 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 210.00 4601.33 582.00 4662.00 299.42 5223.89 628.95 2.014 <-- Critical Surface 2 208.95 4600.98 583.05 4662.00 296.80 5239.71 644.74 2.018 3 208.95 4600.98 582.00 4662.00 295.97 5239.82 644.74 2.022 4 207.89 4600.63 583.05 4662.00 293.35 5255.61 660.53 2.025 5 206.84 4600.28 584.11 4662.00 290.73 5271.37 676.32 2.027 6 207.89 4600.63 582.00 4662.00 292.52 5255.71 660.53 2.028 7 201.58 4598.53 582.00 4662.00 274.30 5334.42 739.47 2.029 8 205.79 4599.93 585.16 4662.00 288.12 5287.12 692.11 2.029 9 206.84 4600.28 583.05 4662.00 289.90 5271.48 676.32 2.029 10 205.79 4599.93 584.11 4662.00 287.28 5287.22 692.11 2.031 11 210.00 4601.33 586.21 4662.00 300.05 5239.75 644.74 2.032 12 205.79 4599.93 583.05 4662.00 286.43 5287.32 692.11 2.034 13 207.89 4600.63 584.11 4662.00 294.18 5255.50 660.53 2.035 14 208.95 4600.98 587.26 4662.00 297.45 5255.55 660.53 2.035 15 204.74 4599.58 584.11 4662.00 283.81 5303.04 707.89 2.036 16 210.00 4601.33 585.16 4662.00 299.23 5239.87 644.74 2.036 17 204.74 4599.58 585.16 4662.00 284.66 5302.95 707.89 2.036 18 206.84 4600.28 582.00 4662.00 289.06 5271.58 676.32 2.037 19 203.68 4599.23 585.16 4662.00 281.19 5318.75 723.68 2.037 Page 2 20 205.79 4599.93 582.00 4662.00 21 207.89 4600.63 588.32 4662.00 22 202.63 4598.88 586.21 4662.00 23 208.95 4600.98 586.21 4662.00 24 210.00 4601.33 584.11 4662.00 25 204.74 4599.58 583.05 4662.00 26 202.63 4598.88 582.00 4662.00 27 206.84 4600.28 589.37 4662.00 28 203.68 4599.23 584.11 4662.00 29 207.89 4600.63 587.26 4662.00 30 202.63 4598.88 585.16 4662.00 31 208.95 4600.98 585.16 4662.00 32 206.84 4600.28 588.32 4662.00 33 201.58 4598.53 586.21 4662.00 34 210.00 4601.33 583.05 4662.00 35 204.74 4599.58 582.00 4662.00 36 199.47 4598.00 582.00 4662.00 37 203.68 4599.23 583.05 4662.00 38 207.89 4600.63 586.21 4662.00 39 205.79 4599.93 589.37 4662.00 40 206.84 4600.28 587.26 4662.00 41 202.63 4598.88 584.11 4662.00 42 210.00 4601.33 591.47 4662.00 43 208.95 4600.98 584.11 4662.00 44 201.58 4598.53 585.16 4662.00 45 210.00 4601.33 582.00 4662.00 46 207.89 4600.63 585.16 4662.00 47 203.68 4599.23 582.00 4662.00 48 202.63 4598.88 583.05 4662.00 49 203.68 4599.23 582.00 4662.00 50 203.68 4599.23 590.42 4662.00 51 201.58 4598.53 584.11 4662.00 52 208.95 4600.98 592.53 4662.00 53 203.68 4599.23 586.21 4662.00 54 200.53 4598.18 585.16 4662.00 55 205.79 4599.93 587.26 4662.00 56 210.00 4601.33 590.42 4662.00 57 195.26 4598.00 582.00 4662.00 58 204.74 4599.58 589.37 4662.00 59 202.63 4598.88 582.00 4662.00 60 201.58 4598.53 583.05 4662,00 61 204.74 4599.58 588.32 4662.00 62 207.89 4600.63 584.11 4662.00 63 200.53 4598.18 584.11 4662.00 64 206.84 4600.28 586.21 4662.00 65 208.95 4600.98 582.00 4662.00 66 196.32 4598.00 583.05 4662.00 67 206.84 4600.28 585.16 4662.00 68 203.68 4599.23 589.37 4662.00 69 205.79 4599.93 588.32 4662.00 70 208.95 4600.98 591.47 4662.00 71 202.63 4598.88 590.42 4662.00 72 201.58 4598.53 582.00 4662.00 73 200.53 4598.18 583.05 4662.00 74 210.00 4601.33 589.37 4662.00 75 205.79 4599.93 586.21 4662.00 Derr 4 EQ Fu1l.gar 285.59 5287.42 692.11 294.86 5271.33 676.32 278.57 5334.44 739.47 296.63 5255.66 660.53 298.41 5239.98 644.74 282.96 5303.14 707.89 277.80 5318.65 723.68 292.27 5287.09 692.11 280.33 5318.84 723.68 294.03 5271.44 676.32 277.71 5334.53 739.47 295.80 5255.77 660.53 291.43 5287.20 692.11 275.09 5350.20 755.26 297.58 5240.09 644.74 282.11 5303.23 707.89 267.59 5366.04 771.05 279.48 5318.93 723.68 293.20 5271.55 676.32 288.84 5302.94 707.89 290.60 5287.30 692.11 276.85 5334.62 739.47 301.53 5255.49 660.53 294.97 5255.88 660.53 274.22 5350.29 755.26 296.76 5240.21 644.74 292.36 5271.65 676.32 278.62 5319.02 723.68 275.98 5334.70 739.47 281.30 5302.85 707.89 282.81 5334.46 739.47 273.35 5350.37 755.26 298.96 5271.28 676.32 282.04 5318.66 723.68 270.72 5366.03 771.05 287.16 5303.13 707.89 300.71 5255.60 660.53 264.22 5381.81 786.84 285.40 5318.75 723.68 275.12 5334.79 739.47 272.48 5350.45 755.26 284.56 5318.85 723.68 291.53 5271.76 676.32 269.85 5366.11 771.05 289.76 5287.40 692.11 293.31 5256.10 660.53 265.27 5381.81 786.84 288.92 5287.50 692.11 281.96 5334.55 739.47 288.00 5303.03 707.89 298.14 5271.39 676.32 279.36 5350.23 755.26 271.61 5350.54 755.26 268.97 5366.18 771.05 299.89 5255.71 660.53 286.31 5303.23 707.89 Page 3 2.038 2.038 2.039 2.039 2.039 2.039 2.040 2.040 2.041 2.041 2.042 2.042 2.042 2.043 2.043 2.043 2.044 2.044 2.044 2.044 2.045 2.045 2.045 2.045 2.046 2.046 2.047 2.047 2.048 2.048 2.048 2.048 2.049 2.049 2.049 2.049 2.049 2.050 2.050 2.050 2.051 2.051 2.051 2.051 2.051 2.051 2.052 2.052 2.052 2.052 2.052 2.053 2.053 2.053 2.053 2.053 Derr 4 EQ Full.gar 76 197.37 4598.00 584.11 4662.00 266.32 5381.81 786.84 2.054 77 196.32 4598.00 582.00 4662.00 264.39 5381.89 786.84 2.054 78 207.89 4600.63 592.53 4662.00 295.57 5287.16 692.11 2.054 79 207.89 4600.63 583.05 4662.00 290.69 5271.86 676.32 2.054 80 204.74 4599.58 587.26 4662.00 283.71 5318.94 723.68 2.055 81 200.53 4598.18 582.00 4662.00 268.09 5366.26 771.05 2.055 82 208.95 4600.98 583.05 4662.00 294.14 5255.99 660.53 2.055 83 206.84 4600.28 593.58 4662.00 293.00 5302.91 707.89 2.055 84 198.42 4598.00 585.16 4662.00 267.37 5381.81 786.84 2.055 85 203.68 4599.23 588.32, 4662.00 281.10 5334.64 739.47 2.055 86 197.37 4598.00 583.05 4662.00 265.44 5381.89 786.84 2.055 87 208.95 4600.98 590.42 4662.00 297.31 5271.50 676.32 2.056 88 202.63 4598.88 589.37 4662.00 278.50 5350.32 755.26 2.056 89 206.84 4600.28 584.11 4662.00 288.08 5287.60 692.11 2.056 90 210.00 4601.33 588.32 4662.00 299.07 5255.83 660.53 2.057 91 197.37 4598.00 582.00 4662.00 264.56 5381.97 786.84 2.057 92 199.47 4598.00 586.21 4662.00 268.43 5381.81 786.84 2.057 93 198.42 4598.00 584.11 4662.00 266.50 5381.89 786.84 2.057 94 207.89 4600.63 591.47 4662.00 294.74 5287.27 692.11 2.057 95 205.79 4599.93 585.16 4662.00 285.47 5303.33 707.89 2.057 96 206.84 4600.28 592.53 4662.00 292.17 5303.01 707.89 2.058 97 204.74 4599.58 586.21 4662.00 282.86 5319.03 723.68 2.058 98 203.68 4599.23 587.26 4662.00 280.25 5334.73 739.47 2.059 99 208.95 4600.98 589.37 4662.00 296.49 5271.61 676.32 2.059 Critical Failure Surface (circle 1) Intersects: XL: 210.00 YL: 4601.33 Centre: XC: 299.42 YC: 5223.89 Generated failure surface: (20 points) 210.00 4601.33 229.98 4598.79 310.43 4595.04 330.57 4595.72 410.58 4604.85 430.35 4608.72 507.88 4630.50 526.78 4637.48 XR: 582.00 YR: 4662.00 Radius: R: 628.95 250.04 4596.89 270.15 4595.63 290.28 4595.01 350.67 4597.04 370.72 4599.00 390.70 4601.60 449.99 4613.23 469.47 4618.37 488.77 4624.13 545.45 4645.06 563.86 4653.24 582.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 210.00 23.00 -7.3 9.99 10.07 2 0.00 35.0 2874.42 36646.83 3788.82 1.05 2 219.99 68.99 -7.3 9.99 10.07 2 0.00 35.0 8623.87 37446.57 4169.70 1.05 3 229.98 91.38 -5.4 8.32 8.35 2 0.00 35.0 11422.09 31594.09 4493.02 1.04 4 238.30 179.39 -5.4 11.74 11.79 3 100.00 18.0 22528.12 45295.68 4826.45 1.02 5 250.04 198.90 -3.6 10.05 10.07 3 100.00 18.0 25092.65 39240.23 5172.96 1.01 6 260.09 238.92 -3.6 10.05 10.07 3 100.00 18.0 30196.72 39636.16 5474.20 1.01 7 270.15 277.77 -1.7 10.07 10.07 3 100.00 18.0 35127.95 39930.91 5741.83 1.01 8 280.22 314.66 -1.8 10.07 10.07 3 100.00 18.0 39788.80 40124.15 5996.48 1.01 9 290.28 350.10 0.1 10.07 10.07 3 100.00 18.0 44242.80 40216.76 6215.24 1.00 10 300.36 383.77 0.1 10.07 10.07 3 100.00 18.0 48448.95 40207.37 6423.21 1.00 11 310.43 415.57 1.9 10.07 10.07 3 100.00 18.0 52395.31 40096.01 6593.34 1.00 12 320.50 445.95 1.9 10.07 10.07 3 100.00 18.0 56138.74 39883.50 6754.80 1.00 13 330.57 473.93 3.8 10.05 10.07 3 100.00 18.0 59555.35 39569.81 6876.66 0.99 14 340.62 500.98 3.8 10.05 10.07 3 100.00 18.0 62830.22 39155.17 6991.73 0.99 15 350.67 515.25 5.6 9.84 9.89 3 100.00 18.0 64481.86 37943.67 7065.14 0.99 16 360.51 558.38 5.6 10.21 10.26 2 0.00 35.0 69797.89 38718.36 7086.96 0.97 17 370.72 701.88 7.4 12.28 12.38 2 0.00 35.0 87734.48 45749.28 7116.76 0.96 Page 4 Derr 4 EQ Fu1l.gar 18 383.00 455.51 7.4 7.70 7.76 2 0.00 35.0 56997.69 28042.91 7240.80 0.96 19 390.70 592.39 9.3 9.94 10.07 2 0.00 35.0 74227.68 35567.92 7255.01 0.96 20 400.64 576.27 9.3 9.94 10.07 2 0.00 35.0 72212.28 34548.28 7057.82 0.96 21 410.58 555.37 11.1 9.88 10.07 2 0.00 35.0 69599.12 33429.81 6803.37 0.95 22 420.47 536.20 11.1 9.88 10.07 2 0.00 35.0 67202.55 32210.65 6568.69 0.95 23 430.35 511.98 12.9 9.82 10.07 2 0.00 35.0 64174.05 30893.20 6279.98 0.95 24 440.17 489.85 12.9 9.82 10.07 2 0.00 35.0 61408.03 29476.46 6008.68 0.95 25 449.99 462.50 14.8 9.74 10.07 2 0.00 35.0 57988.11 27960.54 5686.57 0.95 26 459.73 437.49 14.8 9.74 10.07 2 0.00 35.0 54861.22 26346.25 5379.02 0.95 27 469.47 407.29 16.6 9.65 10.07 2 0.00 35.0 51084.54 24634.80 5024.62 0.95 28 479.12 379.50 16.6 9.65 10.07 2 0.00 35.0 47610.75 22825.23 4681.69 0.95 29 488.77 346.71 18.4 9.56 10.07 2 0.00 35.0 43510.23 20919.49 4295.87 0.94 30 498.33 316.27 18.4 9.56 10.07 2 0.00 35.0 39705.21 18917.22 3918.39 0.94 31 507.88 281.18 20.3 9.45 10.07 2 0.00 35.0 35317.33 16818.79 3502.24 0.94 32 517.33 248.19 20.3 9.45 10.07 2 0.00 35.0 31194.14 14624.31 3090.80 0.94 33 526.78 153.19 22.1 6.61 7.13 2 0.00 35.0 19267.55 8982.38 2710.37 0.95 34 533.39 135.44 22.1 6.61 7.13 2 0.00 35.0 17049.39 7787.18 2395.55 0.95 35 540.00 55.63 22.1 3.00 3.24 5 0.00 45.0 6118.86 3140.38 1860.01 0.90 36 543.00 42.66 22.1 2.45 2.64 2 0.00 35.0 5376.92 2379.08 2036.92 0.95 37 545.45 137.12 23.9 9.21 10.07 2 0.00 35.0 17306.15 7476.57 1727.64 0.95 38 554.65 99.48 23.9 9.21 10.07 2 0.00 35.0 12600.73 4906.42 1250.77 0.95 39 563.86 70.15 25.8 11.93 13.25 2 0.00 35.0 8983.97 2381.49 670.66 0.95 40 575.79 9.32 25.8 6.21 6.90 1 150.00 22.0 1220.52 0.00 146.34 1.01 X -S Area: 13038.47 Path Length: 382.78 X -S Weight: 1636297.12 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 5.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5.gmf Processed: 07 Jun 2018 18:32:38 DATA: Analysis 1 - Case 5 - SE Building & Oil/Gas Well Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) — Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 347.00 4659.00 Profile: 2 (2 points) 407.00 4662.00 Profile: 3 (3 points) 200.00 4610.00 Profile: 4 (2 points) 404.00 4662.00 Profile: 5 (2 points) 407.00 4659.00 Profile: 6 (3 points) 100.00 4610.00 Profile: 7 (2 points) 407.00 4610.00 Profile: 8 (7 points) 100.00 4607.00 407.00 4607.00 Slope Surface (6 points) Material beneath: 1 - Overburden 356.00 4662.00 404.00 4662.00 Material beneath: 1 - Overburden 530.00 4662.00 Material beneath: 2 - Sand and Gravel 347.00 4659.00 404.00 4659.00 Material beneath: 5 - Slurry Wall 407.00 4662.00 Material beneath: 2 - Sand and Gravel 530.00 4659.00 Material beneath: 3 - Weathered Bedrock 200.00 4610.00 404.00 4610.00 Material beneath: 3 - Weathered Bedrock 530.00 4610.00 Material beneath: 4 - Stable Bedrock 200.00 4607.00 404.00 4607.00 530.00 4607.00 100.00 4610.00 200.00 4610.00 356.00 4662.00 530.00 4662.00 Phreatic Surface (5 points) Page 1 404.01 4604.00 404.00 4662.00 406.99 4604.00 407.00 4662.00 Derr 5.gar 100.00 4610.00 Failure Surface 200.00 4610.00 406.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4610.00 XR: 526.00 YR: Centre: XC: 272.14 YC: 5205.65 Radius: R: Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 5 - SE Building & Oil/Gas Well Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 3.106 There were: 5601 successful analyses from a total of 8001 trial surfaces 2400 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.26 Results Summary - Lowest 99 Factor of Safety circles 407.00 4659.00 4662.00 600.00 530.00 4659.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 206.84 4612.28 516.00 4662.00 281.20 5135.98 528.95 2.257 <-- Critical Surface 2 205.79 4611.93 517.05 4662.00 278.61 5151.78 544.74 2.265 3 198.42 4610.00 516.00 4662.00 259.84 5230.65 623.68 2.270 4 204.74 4611.58 518.11 4662.00 276.02 5167.55 560.53 2.271 5 205.79 4611.93 516.00 4662.00 277.78 5151.89 544.74 2.273 6 208.95 4612.98 518.11 4662.00 287.00 5120.17 513.16 2.274 7 204.74 4611.58 517.05 4662.00 275.19 5167.66 560.53 2.275 8 203.68 4611.23 519.16 4662.00 273.44 5183.31 576.32 2.276 9 199.47 4610.00 517.05 4662.00 260.90 5230.65 623.68 2.276 10 210.00 4613.33 516.00 4662.00 288.77 5104.43 497.37 2.277 11 194.21 4610.00 516.00 4662.00 256.46 5246.44 639.47 2.278 12 204.74 4611.58 516.00 4662.00 274.36 5167.77 560.53 2.279 13 203.68 4611.23 518.11 4662.00 272.60 5183.41 576.32 2.279 14 199.47 4610.00 516.00 4662.00 260.03 5230.74 623.68 2.279 15 202.63 4610.88 519.16 4662.00 270.01 5199.14 592.11 2.282 16 195.26 4610.00 517.05 4662.00 257.51 5246.44 639.47 2.283 17 195.26 4610.00 516.00 4662.00 256.65 5246.52 639.47 2.284 18 203.68 4611.23 517.05 4662.00 271.76 5183.51 576.32 2.285 19 203.68 4611.23 516.00 4662.00 270.92 5183.61 576.32 2.285 20 207.89 4612.63 519.16 4662.00 284.43 5136.01 528.95 2.285 21 201.58 4610.53 519.16 4662.00 266.58 5214.94 607.89 2.286 22 208.95 4612.98 517.05 4662.00 286.19 5120.29 513.16 2.286 Page 2 Derr 5.gar 23 202.63 4610.88 517.05 4662.00 268.32 5199.33 592.11 2.287 24 202.63 4610.88 518.11 4662.00 269.17 5199.23 592.11 2.287 25 206.84 4612.28 521.26 4662.00 282.68 5151.71 544.74 2.288 26 208.95 4612.98 516.00 4662.00 285.38 5120.42 513.16 2.288 27 201.58 4610.53 518.11 4662.00 265.72 5215.03 607.89 2.289 28 196.32 4610.00 517.05 4662.00 257.70 5246.52 639.47 2.289 29 202.63 4610.88 516.00 4662.00 267.47 5199.42 592.11 2.289 30 196.32 4610.00 518.11 4662.00 258.57 5246.44 639.47 2.290 31 201.58 4610.53 517.05 4662.00 264.87 5215.12 607.89 2.291 32 200.53 4610.18 518.11 4662.00 262.27 5230.80 623.68 2.292 33 197.37 4610.00 519.16 4662.00 259.62 5246.44 639.47 2.293 34 200.53 4610.18 519.16 4662.00 263.13 5230.71 623.68 2.293 35 191.05 4610.00 516.00 4662.00 253.30 5262.30 655.26 2.293 36 206.84 4612.28 520.21 4662.00 281.87 5151.83 544.74 2.293 37 196.32 4610.00 516.00 4662.00 256.84 5246.60 639.47 2.294 38 205.79 4611.93 522.32 4662.00 280.13 5167.50 560.53 2.294 39 197.37 4610.00 518.11 4662.00 258.76 5246.52 639.47 2.296 40 207.89 4612.63 518.11 4662.00 283.62 5136.13 528.95 2.297 41 200.53 4610.18 517.05 4662.00 261.40 5230.88 623.68 2.297 42 207.89 4612.63 517.05 4662.00 282.80 5136.25 528.95 2.297 43 198.42 4610.00 520.21 4662.00 260.67 5246.44 639.47 2.298 44 192.11 4610.00 517.05 4662.00 254.35 5262.30 655.26 2.298 45 200.53 4610.18 516.00 4662.00 260.54 5230.97 623.68 2.298 46 197.37 4610.00 516.00 4662.00 257.02 5246.69 639.47 2.298 47 201.58 4610.53 516.00 4662.00 264.01 5215.21 607.89 2.298 48 206.84 4612.28 519.16 4662.00 281.05 5151.94 544.74 2.299 49 198.42 4610.00 519.16 4662.00 259.81 5246.52 639.47 2.299 50 205.79 4611.93 521.26 4662.00 279.30 5167.61 560.53 2.299 51 197.37 4610.00 517.05 4662.00 257.89 5246.60 639.47 2.302 52 193.16 4610.00 518.11 4662.00 255.41 5262.30 655.26 2.302 53 199.47 4610.00 521.26 4662.00 261.72 5246.44 639.47 2.303 54 207.89 4612.63 516.00 4662.00 281.98 5136.36 528.95 2.303 55 192.11 4610.00 516.00 4662.00 253.49 5262.38 655.26 2.304 56 205.79 4611.93 520.21 4662.00 278.48 5167.72 560.53 2.304 57 204.74 4611.58 522.32 4662.00 276.75 5183.38 576.32 2.304 58 198.42 4610.00 518.11 4662.00 258.94 5246.60 639.47 2.304 59 198.42 4610.00 517.05 4662.00 258.07 5246.69 639.47 2.305 60 193.16 4610.00 516.00 4662.00 253.67 5262.46 655.26 2.306 61 198.42 4610.00 516.00 4662.00 257.20 5246.77 639.47 2.306 62 199.47 4610.00 520.21 4662.00 260.86 5246.52 639.47 2.307 63 203.68 4611.23 523.37 4662.00 274.19 5199.12 592.11 2.307 64 206.84 4612.28 518.11 4662.00 280.22 5152.05 544.74 2.308 65 204.74 4611.58 521.26 4662.00 275.91 5183.48 576.32 2.308 66 199.47 4610.00 518.11 4662.00 259.13 5246.69 639.47 2.308 67 193.16 4610.00 517.05 4662.00 254.54 5262.38 655.26 2.308 68 206.84 4612.28 517.05 4662.00 279.40 5152.16 544.74 2.308 69 199.47 4610.00 519.16 4662.00 259.99 5246.60 639.47 2.309 70 208.95 4612.98 523.37 4662.00 288.45 5135.92 528.95 2.309 71 210.00 4613.33 520.21 4662.00 289.39 5120.31 513.16 2.309 72 210.00 4613.33 521.26 4662.00 290.19 5120.19 513.16 2.310 73 194.21 4610.00 519.16 4662.00 256.46 5262.30 655.26 2.310 74 203.68 4611.23 522.32 4662.00 273.35 5199.22 592.11 2.310 75 194.21 4610.00 517.05 4662.00 254.73 5262.46 655.26 2.311 76 205.79 4611.93 518.11 4662.00 276.82 5167.94 560.53 2.311 77 195.26 4610.00 520.21 4662.00 257.51 5262.30 655.26 2.312 78 202.63 4610.88 523.37 4662.00 270.79 5214.94 607.89 2.312 Page 3 Derr 5.gar 79 205.79 4611.93 519.16 4662.00 277.65 5167.83 560.53 2.312 80 206.84 4612.28 516.00 4662.00 278.58 5152.27 544.74 2.313 81 199.47 4610.00 517.05 4662.00 258.26 5246.77 639.47 2.313 82 194.21 4610.00 518.11 4662.00 255.59 5262.38 655.26 2.313 83 208.95 4612.98 522.32 4662.00 287.65 5136.04 528.95 2.313 84 203.68 4611.23 521.26 4662.00 272.51 5199.32 592.11 2.313 85 194.21 4610.00 516.00 4662.00 253.86 5262.54 655.26 2.314 86 204.74 4611.58 519.16 4662.00 274.25 5183.69 576.32 2.314 87 202.63 4610.88 522.32 4662.00 269.95 5215.03 607.89 2.315 88 205.79 4611.93 517.05 4662.00 275.99 5168.04 560.53 2.315 89 190.00 4610.00 519.16 4662.00 253.14 5278.08 671.05 2.316 90 195.26 4610.00 518.11 4662.00 255.78 5262.46 655.26 2.316 91 201.58 4610.53 523.37 4662.00 267.38 5230.73 623.68 2.316 92 207.89 4612.63 524.42 4662.00 285.92 5151.75 544.74 2.316 93 204.74 4611.58 520.21 4662.00 275.08 5183.59 576.32 2.316 94 196.32 4610.00 521.26 4662.00 258.57 5262.30 655.26 2.317 95 210.00 4613.33 519.16 4662.00 288.58 5120.44 513.16 2.317 96 204.74 4611.58 518.11 4662.00 273.41 5183.79 576.32 2.318 97 199.47 4610.00 516.00 4662.00 257.38 5246.85 639.47 2.318 98 200.53 4610.18 523.37 4662.00 263.96 5246.50 639.47 2.318 99 203.68 4611.23 519.16 4662.00 270.83 5199.51 592.11 2.319 Critical Failure Surface (circle 1) Intersects: XL: 206.84 YL: 4612.28 XR: 516.00 YR: 4662.00 Centre: XC: 281.20 YC: 5135.98 Radius: R: 528.95 Generated failure surface: (20 points) 206.84 4612.28 223.44 4610.19 240.10 4608.63 256.80 4607.59 273.52 4607.08 290.25 4607.11 306.97 4607.66 323.67 4608.74 340.32 4610.34 356.92 4612.48 373.43 4615.13 389.86 4618.31 406.18 4622.01 422.37 4626.22 438.42 4630.94 454.31 4636.16 470.03 4641.88 485.57 4648.10 500.89 4654.81 516.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 206.84 0.74 -7.2 1.80 1.81 2 0.00 35.0 92.52 0.00 53.61 1.05 2 208.64 18.68 -7.2 7.40 7.46 2 0.00 35.0 2335.19 626.67 324.90 1.05 3 216.04 43.84 -7.2 7.40 7.46 2 0.00 35.0 5479.96 1880.02 760.20 1.05 4 223.44 16.43 -5.4 2.04 2.05 2 0.00 35.0 2054.07 731.41 1026.76 1.03 5 225.48 73.49 -5.4 7.31 7.34 3 100.00 18.0 9226.42 3331.68 1277.61 1.02 6 232.79 96.31 -5.4 7.31 7.34 3 100.00 18.0 12159.56 4442.48 1682.33 1.02 7 240.10 136.84 -3.6 8.35 8.37 3 100.00 18.0 17322.41 6348.75 2089.38 1.01 8 248.45 164.39 -3.6 8.35 8.37 3 100.00 18.0 20836.39 7655.51 2512.64 1.01 9 256.80 191.15 -1.7 8.36 8.37 3 100.00 18.0 24233.13 8894.46 2907.64 1.00 10 265.16 216.57 -1.7 8.36 8.37 3 100.00 18.0 27444.90 10064.84 3292.81 1.00 11 273.52 241.01 0.1 8.37 8.37 3 100.00 18.0 30516.33 11167.15 3647.44 1.00 12 281.89 264.25 0.1 8.37 8.37 3 100.00 18.0 33418.89 12199.89 3994.40 1.00 13 290.25 286.21 1.9 8.36 8.37 3 100.00 18.0 36144.99 13163.42 4308.78 1.00 14 298.61 307.21 1.9 8.36 8.37 3 100.00 18.0 38733.11 14057.79 4617.38 1.00 15 306.97 326.58 3.7 8.35 8.37 3 100.00 18.0 41099.71 14882.27 4891.61 0.99 16 315.32 345.30 3.7 8.35 8.37 3 100.00 18.0 43367.75 15636.97 5161.63 0.99 17 323.67 283.28 5.5 6.55 6.58 3 100.00 18.0 35509.03 12783.82 5371.00 0.99 18 330.22 293.43 5.5 6.55 6.58 3 100.00 18.0 36711.98 13163.79 5553.01 0.99 19 336.76 163.67 5.5 3.56 3.57 2 0.00 35.0 20459.02 7310.91 5643.47 0.98 20 340.32 314.67 7.3 6.68 6.73 2 0.00 35.0 39333.53 14034.01 5743.40 0.97 Page 4 Derr 5.gar 21 347.00 438.48 7.3 9.00 9.07 2 0.00 35.0 54890.69 19396.61 5947.09 0.97 22 356.00 426.86 8.9 8.72 8.82 2 0.00 35.0 53513.89 19334.36 5955.42 0.97 23 364.72 414.64 9.1 8.72 8.83 2 0.00 35.0 51986.46 19714.32 5786.76 0.96 24 373.43 378.39 10.9 8.21 8.37 2 0.00 35.0 47447.00 18949.93 5578.29 0.96 25 381.65 365.35 10.9 8.21 8.37 2 0.00 35.0 45816.34 19140.37 5392.33 0.96 26 389.86 303.24 12.8 7.07 7.25 2 0.00 35.0 38032.73 16688.23 5177.13 0.96 27 396.93 291.92 12.8 7.07 7.25 2 0.00 35.0 36617.27 16724.42 4990.46 0.96 28 404.00 80.52 12.8 2.00 2.05 5 0.00 45.0 8857.36 4737.57 4235.46 0.93 29 406.00 319.00 14.5 8.18 8.45 2 0.00 35.0 40021.73 18980.46 4693.15 0.96 30 414.18 301.58 14.6 8.18 8.46 2 0.00 35.0 37845.39 17861.48 4436.62 0.96 31 422.37 277.72 16.4 8.03 8.37 2 0.00 35.0 34859.67 16497.52 4145.40 0.96 32 430.39 258.78 16.4 8.03 8.37 2 0.00 35.0 32491.67 15265.39 3862.71 0.96 33 438.42 236.49 18.2 7.95 8.37 2 0.00 35.0 29704.54 13968.21 3546.46 0.96 34 446.37 215.73 18.2 7.95 8.37 2 0.00 35.0 27108.96 12604.04 3235.02 0.96 35 454.31 191.86 20.0 7.86 8.37 2 0.00 35.0 24123.63 11175.01 2893.18 0.96 36 462.17 169.36 20.0 7.86 8.37 2 0.00 35.0 21311.43 9680.96 2553.58 0.96 37 470.03 144.14 21.8 7.77 8.37 2 0.00 35.0 18156.92 8122.37 2187.04 0.96 38 477.80 1.19.99 21.8 7.77 8.37 2 0.00 35.0 15138.11 6499.21 1819.79 0.96 39 485.57 93.64 23.6 7.66 8.37 2 0.00 35.0 11843.42 4812.48 1429.45 0.96 40 493.23 67.94 23.6 7.66 8.37 2 0.00 35.0 8630.44 3061.60 1035.31 0.96 41 500.89 44.84 25.4 8.80 9.75 2 0.00 35.0 5763.63 1273.89 587.37 0.97 42 509.70 9.46 25.4 6.30 6.98 1 150.00 22.0 1238.88 0.00 151.94 1.02 X -S Area: 8933.99 Path Length: 317.88 X -S Weight: 1121878.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 5 Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 Full.gmf Processed: 07 Jun 2018 18:34:15 DATA: Analysis 1 - Case 5 - SE Building & Oil/Gas Well Material Properties (5 materials) Material: 1 Cohesion 150.00 Material: 2 Cohesion 0.00 Material: 3 Cohesion 100.00 Material: 4 Cohesion 2000.00 Material: 5 Cohesion 0.00 (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 22.0 131.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 35.0 125.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 18.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 20.0 141.00 Auto (Mohr -Coulomb Isotropic) Phi UnitWeight Ru 45.0 110.00 Auto Water Properties —Full - Overburden - Sand and Gravel - Weathered Bedrock - Stable Bedrock - Slurry Wall Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 347.00 4659.00 Profile: 2 (2 points) 407.00 4662.00 Profile: 3 (3 points) 200.00 4610.00 Profile: 4 (2 points) 404.00 4662.00 Profile: 5 (2 points) 407.00 4659.00 Profile: 6 (3 points) 100.00 4610.00 Profile: 7 (2 points) 407.00 4610.00 Profile: 8 (7 points) 100.00 4607.00 407.00 4607.00 Slope Surface (6 points) 100.00 4610.00 530.00 4662.00 Material beneath: 1 - Overburden 356.00 4662.00 404.00 4662.00 Material beneath: 1 - Overburden 530.00 4662.00 Material beneath: 2 - Sand and Gravel 347.00 4659.00 404.00 4659.00 Material beneath: 5 - Slurry Wall 407.00 4662.00 Material beneath: 2 - Sand and Gravel 530.00 4659.00 Material beneath: 3 - Weathered Bedrock 200.00 4610.00 404.00 4610.00 Material beneath: 3 - Weathered Bedrock 530.00 4610.00 Material beneath: 4 - Stable Bedrock 200.00 4607.00 404.00 530.00 4607.00 Phreatic Surface (4 points) 200.00 4610.00 4607.00 356.00 4662.00 Page 1 404.01 4604.00 404.00 4662.00 406.99 4604.00 407.00 4662.00 Derr 5 Full.gar 100.00 Failure Surface 4659.00 406.00 4659.00 407.00 4659.00 530.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4610.00 XR: 526.00 YR: 4662.00 Centre: XC: 272.14 YC: 5205.65 Radius: R: 600.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 5 - SE Building & Oil/Gas Well - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 5.283 There were: 5601 successful analyses from a total of 8001 trial surfaces 2400 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 3.71 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 206.84 4612.28 516.00 4662.00 281.20 5135.98 528.95 3.712 <-- Critical Surface 2 198.42 4610.00 516.00 4662.00 259.84 5230.65 623.68 3.712 3 194.21 4610.00 516.00 4662.00 256.46 5246.44 639.47 3.721 4 205.79 4611.93 517.05 4662.00 278.61 5151.78 544.74 3.724 5 199.47 4610.00 517.05 4662.00 260.90 5230.65 623.68 3.727 6 199.47 4610.00 516.00 4662.00 260.03 5230.74 623.68 3.728 7 195.26 4610.00 516.00 4662.00 256.65 5246.52 639.47 3.729 8 195.26 4610.00 517.05 4662.00 257.51 5246.44 639.47 3.732 9 205.79 4611.93 516.00 4662.00 277.78 5151.89 544.74 3.733 10 204.74 4611.58 517.05 4662.00 275.19 5167.66 560.53 3.733 11 204.74 4611.58 516.00 4662.00 274.36 5167.77 560.53 3.734 12 204.74 4611.58 518.11 4662.00 276.02 5167.55 560.53 3.734 13 191.05 4610.00 516.00 4662.00 253.30 5262.30 655.26 3.738 14 203.68 4611.23 516.00 4662.00 270.92 5183.61 576.32 3.739 15 196.32 4610.00 517.05 4662.00 257.70 5246.52 639.47 3.740 16 196.32 4610.00 516.00 4662.00 256.84 5246.60 639.47 3.741 17 202.63 4610.88 516.00 4662.00 267.47 5199.42 592.11 3.741 18 203.68 4611.23 518.11 4662.00 272.60 5183.41 576.32 3.741 19 203.68 4611.23 519.16 4662.00 273.44 5183.31 576.32 3.742 20 202.63 4610.88 517.05 4662.00 268.32 5199.33 592.11 3.744 21 201.58 4610.53 517.05 4662.00 264.87 5215.12 607.89 3.746 22 197.37 4610.00 516.00 4662.00 257.02 5246.69 639.47 3.746 Page 2 23 202.63 4610.88 519.16 24 203.68 4611.23 517.05 25 201.58 4610.53 518.11 26 208.95 4612.98 518.11 27 192.11 4610.00 517.05 28 201.58 4610.53 519.16 29 200.53 4610.18 516.00 30 196.32 4610.00 518.11 31 200.53 4610.18 518.11 32 192.11 4610.00 516.00 33 201.58 4610.53 516.00 34 210.00 4613.33 516.00 35 200.53 4610.18 517.05 36 202.63 4610.88 518.11 37 193.16 4610.00 516.00 38 197.37 4610.00 519.16 39 208.95 4612.98 516.00 40 197.37 4610.00 518.11 41 198.42 4610.00 516.00 42 193.16 4610.00 518.11 43 200.53 4610.18 519.16 44 197.37 4610.00 517.05 45 193.16 4610.00 517.05 46 198.42 4610.00 519.16 47 198.42 4610.00 517.05 48 194.21 4610.00 516.00 49 207.89 4612.63 519.16 50 198.42 4610.00 518.11 51 208.95 4612.98 517.05 52 194.21 4610.00 517.05 53 198.42 4610.00 520.21 54 207.89 4612.63 517.05 55 199.47 4610.00 518.11 56 207.89 4612.63 516.00 57 199.47 4610.00 517.05 58 190.00 4610.00 516.00 59 194.21 4610.00 518.11 60 190.00 4610.00 517.05 61 195.26 4610.00 516.00 62 199.47 4610.00 516.00 63 199.47 4610.00 519.16 64 206.84 4612.28 521.26 65 195.26 4610.00 517.05 66 195.26 4610.00 518.11 67 206.84 4612.28 520.21 68 199.47 4610.00 521.26 69 206.84 4612.28 519.16 70 194.21 4610.00 519.16 71 206.84 4612.28 516.00 72 206.84 4612.28 517.05 73 190.00 4610.00 519.16. 74 207.89 4612.63 518.11 75 199.47 4610.00 520.21 76 191.05 4610.00 516.00 77 195.26 4610.00 520.21 78 196.32 4610.00 516.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 4662.00 270.01 271.76 265.72 287.00 254.35 266.58 260.54 258.57 262.27 253.49 264.01 288.77 261.40 269.17 253.67 259.62 285.38 258.76 257.20 255.41 263.13 257.89 254.54 259.81 258.07 253.86 284.43 258.94 286.19 254.73 260.67 282.80 259.13 281.98 258.26 250.54 255.59 251.41 254.04 257.38 259.99 282.68 254.91 255.78 281.87 261.72 281.05 256.46 278.58 279.40 253.14 283.62 260.86 250.73 257.51 254.22 Derr 5 Full.gar 5199.14 592.11 5183.51 5215.03 5120.17 5262.30 5214.94 5230.97, 5246.44 5230.80 5262.38 5215.21 5104.43 5230.88 5199.23 5262.46 5246.44 5120.42 5246.52 5246.77 5262.30 5230.71 5246.60. 5262.38 5246.52 5246.69 5262.54 5136.01 5246.60 5120.29 5262.46 5246.44 5136.25 5246.69 5136.36 5246.77 5278.32 5262.38 5278.24 5262.62 5246.85 5246.60 5151.71 5262.54 5262.46 5151.83 5246.44 5151.94 5262.30 5152.27 5152.16 5278.08 5136.13 5246.52 5278.39 5262.30 5262.70 Page 3 576.32 607.89 513.16 655.26 607.89 623.68 639.47 623.68 655.26 607.89 497.37 623.68 592.11 655.26 639.47 513.16 639.47 639.47 655.26 623.68 639.47 655.26 639.47 639.47 655.26 528.95 639.47 513.16 655.26 639.47 528.95 639.47 528.95 639.47 671.05 655.26 671.05 655.26 639.47 639.47 544.74 655.26 655.26 544.74 639.47 544.74 655.26 544.74 544.74 671.05 528.95 639.47 671.05 655.26 655.26 3.748 3.748 3.749 3.749 3.749 3.750 3.750 3.750 3.751 3.751 3.752 3.752 3.752 3.753 3.754 3.755 3.755 3.755 3.756 3.760 3.761 3.761 3.763 3.763 3.764 3.764 3.765 3.765 3.765 3.765 3.766 3.769 3.769 3.771 3.771 3.773 3.774 3.774 3.774 3.775 3.775 3.775 3.776 3.777 3.777 3.778 3.779 3.779 3.780 3.780 3.781 3.781 3.782 3.783 3.783 3.784 Derr 5 Full.gar 79 191.05 4610.00 517.05 4662.00 251.60 5278.32 671.05 3.784 80 205.79 4611.93 517.05 4662.00 275.99 5168.04 560.53 3.785 81 191.05 4610.00 518.11 4662.00 252.47 5278.24 671.05 3.785 82 190.00 4610.00 518.11 4662.00 252.28 5278.16 671.05 3.785 83 196.32 4610.00 517.05 4662.00 255.09 5262.62 655.26 3.786 84 205.79 4611.93 518.11 4662.00 276.82 5167.94 560.53 3.786 85 205.79 4611.93 522.32 4662.00 280.13 5167.50 560.53 3.786 86 204.74 4611.58 517.05 4662.00 272.57 5183.89 576.32 3.787 87 205.79 4611.93 521.26 4662.00 279.30 5167.61 560.53 3.787 88 205.79 4611.93 520.21 4662.00 278.48 5167.72 560.53 3.787 89 203.68 4611.23 516.00 4662.00 268.29 5199.80 592.11 3.790 90 206.84 4612.28 518.11 4662.00 280.22 5152.05 544.74 3.790 91 195.26 4610.00 519.16 4662.00 256.65 5262.38 655.26 3.790 92 196.32 4610.00 519.16 4662.00 256.83 5262.46 655.26 3.790 93 204.74 4611.58 518.11 4662.00 273.41 5183.79 576.32 3.791. 94 191.05 4610.00 520.21 4662.00 254.20 5278.08 671.05 3.792 95 203.68 4611.23 518.11 4662.00 269.98 5199.61 592.11 3.792 96 204.74 4611.58 519.16 4662.00 274.25 5183.69 576.32 3.792 97 192.11 4610.00 516.00 4662.00 250.91 5278.47 671.05 3.792 98 202.63 4610.88 517.05 4662.00 265.69 5215.49 607.89 3.793 99 205.79 4611.93 516.00 4662.00 275.16 5168.15 560.53 3.793 Critical Failure Surface (circle 1) Intersects: XL: 206.84 YL: 4612.28 XR: 516.00 YR: 4662.00 Centre: XC: 281.20 YC: 5135.98 Radius: R: 528.95 Generated failure surface: (20 points) 206.84 4612.28 223.44 4610.19 240.10 4608.63 256.80 4607.59 273.52 4607.08 290.25 4607.11 306.97 4607.66 323.67 4608.74 340.32 4610.34 356.92 4612.48 373.43 4615.13 389.86 4618.31 406.18 4622.01 422.37 4626.22 438.42 4630.94 454.31 4636.16 470.03 4641.88 485.57 4648.10 500.89 4654.81 516.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 206.84 15.82 -7.2 8.30 8.37 2 0.00 35.0 1977.18 24659.76 3070.08 1.03 2 215.14 47.45 -7.2 8.30 8.37 2 0.00 35.0 5931.03 25205.13 3379.63 1.03 3 223.44 16.43 -5.4 2.04 2.05 2 0.00 35.0 2054.07 6250.42 3565.16 1.02 4 225.48 73.49 -5.4 7.31 7.34 3 100.00 18.0 9226.42 22603.54 3721.71 1.01 5 232.79 96.31 -5.4 7.31 7.34 3 100.00 18.0 12159.56 22917.86 3972.67 1.01 6 240.10 136.84 -3.6 8.35 8.37 3 100.00 18.0 17322.41 26429.06 4218.89 1.01 7 248.45 164.39 -3.6 8.35 8.37 3 100.00 18.0 20836.39 26699.23 4467.27 1.01 8 256.80 .191.15 -1.7 8.36 8.37 3 100.00 18.0 24233.13 26900.80 4692.22 1.00 9 265.16 216.57 -1.7 8.36 8.37 3 100.00 18.0 27444.90 27033.03 4902.93 1.00 10 273.52 241.01 0.1 8.37 8.37 3 100.00 18.0 30516.33 27097.03 5089.07 1.00 11 281.89 264.25 0.1 8.37 8.37 3 100.00 18.0 33418.89 27091.07 5262.05 1.00 12 290.25 286.21 1.9 8.36 8.37 3 100.00 18.0 36144.99 27016.03 5409.47 1.00 13 298.61 307.21 1.9 8.36 8.37 3 100.00 18.0 38733.11 26872.28 5544.67 1.00 14 306.97 326.58 3.7 8.35 8.37 3 100.00 18.0 41099.71 26659.63 5653.49 1.00 15 315.32 345.30 3.7 8.35 8.37 3 100.00 18.0 43367.75 26377.74 5750.80 1.00 16 323.67 283.28 5.5 6.55 6.58 3 100.00 18.0 35509.03 20503.21 5814.70 1.00 17 330.22 293.43 5.5 6.55 6.58 3 100.00 18.0 36711.98 20243.76 5861.52 1.00 18 336.76 163.67 5.5 3.56 3.57 2 0.00 35.0 20459.02 10889.32 5875.60 0.99 19 340.32 314.67 7.3 6.68 6.73 2 0.00 35.0 39333.53 20264.60 5888.94 0.98 20 347.00 438.48 7.3 9.00 9.07 2 0.00 35.0 54890.69 26736.73 6024.35 0.98 Page 4 Derr 5 Full.gar 21 356.00 426.86 8.9 8.72 8.82 2 0.00 35.0 53513.89 25312.14 6044.93 0.98 22 364.72 414.64 9.1 8.72 8.83 2 0.00 35.0 51986.46 24553.06 5870.33 0.98 23 373.43 378.39 10.9 8.21 8.37 2 0.00 35.0 47447.00 22483.56 5668.33 0.98 24 381.65 365.35 10.9 8.21 8.37 2 0.00 35.0 45816.34 21654.21 5473.32 0.98 25 389.86 303.24 12.8 7.07 7.25 2 0.00 35.0 38032.73 18044.68 5260.72 0.98 26 396.93 291.92 12.8 7.07 7.25 2 0.00 35.0 36617.27 17319.92 5064.67 0.98 27 404.00 80.52 12.8 2.00 2.05 5 0.00 45.0 8857.36 4767.99 4307.68 0.97 28 406.00 319.00 14.5 8.18 8.45 2 0.00 35.0 40021.73 18980.46 4766.71 0.98 29 414.18 301.58 14.6 8.18 8.46 2 0.00 35.0 37845.39 17861.48 4506.65 0.98 30 422.37 277.72 16.4 8.03 8.37 2 0.00 35.0 34859.67 16497.52 4219.00 0.99 31 430.39 258.78 16.4 8.03 8.37 2 0.00 35.0 32491.67 15265.39 3931.72 0.99 32 438.42 236.49 18.2 7.95 8.37 2 0.00 35.0 29704.54 13968.21 3617.08 0.99 33 446.37 215.73 18.2 7.95 8.37 2 0.00 35.0 27108.96 12604.04 3300.06 0.99 34 454.31 191.86 20.0 7.86 8.37 2 0.00 35.0 24123.63 11175.01 2957.69 1.00 35 462.17 169.36 20.0 7.86 8.37 2 0.00 35.0 21311.43 9680.96 2611.42 1.00 36 470.03 144.14 21.8 7.77 8.37 2 0.00 35.0 18156.92 8122.37 2242.07 1.00 37 477.80 119.99 21.8 7.77 8.37 2 0.00 35.0 15138.11 6499.21 1867.00 1.00 38 485.57 93.64 23.6 7.66 8.37 2 0.00 35.0 11843.42 4812.48 1471.43 1.01 39 493.23 67.94 23.6 7.66 8.37 2 0.00 35.0 8630.44 3061.60 1068.20 1.01 40 500.89 44.84 25.4 8.80 9.75 2 0.00 35.0 5763.63 1273.89 611.61 1.02 41 509.70 9.46 25.4 6.30 6.98 1 150.00 22.0 1238.88 0.00 168.54 1.05 X -S Area: 8933.99 Path Length: 317.88 X -S weight: 1121879.38 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 5 EQ.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 EQ.gmf Processed: 07 Jun 2018 18:33:25 DATA: Analysis 1 — Case 5 - SE Building & Oil/Gas Well Material Properties (5 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Pseudostatic Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 (3 points) 347.00 4659.00 Profile: 2 (2 points) 407.00 4662.00 Profile: 3 (3 points) 200.00 4610.00 Profile: 4 (2 points) 404.00 4662.00 Profile: 5 (2 points) 407.00 4659.00 Profile: 6 (3 points) 100.00 4610.00 Profile: 7 (2 points) 407.00 4610.00 Profile: 8 (7 points) 100.00 4607.00 407.00 4607.00 Slope Surface (6 points) 100.00 4610.00 530.00 4662.00 Material beneath: 1 - Overburden 356.00 4662.00 404.00 4662.00 Material beneath: 1 - Overburden 530.00 4662.00 Material beneath: 2 - Sand and Gravel 347.00 4659.00 404.00 4659.00 Material beneath: 5 - Slurry Wall 407.00 4662.00 Material beneath: 2 - Sand and Gravel 530.00 4659.00 Material beneath: 3 - Weathered Bedrock 200.00 4610.00 404.00 4610.00 Material beneath: 3 - Weathered Bedrock 530.00 4610.00 Material beneath: 4 - Stable Bedrock 200.00 4607.00 404.00 4607.00 530.00 4607.00 Phreatic Surface (5 points) 200.00 4610.00 356.00 4662.00 404.01 4604.00 404.00 4662.00 406.99 4604.00 407.00 4662.00 Page 1 Derr 5 EQ.gar 100.00 Failure Surface 4610.00 200.00 4610.00 406.00 4659.00 407.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4610.00 XR: 526.00 YR: 4662.00 Centre: XC: 272.14 YC: 5205.65 Radius: R: 600.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 20.00 20.00 300.00 Trial positions within range: 20 20 20 RESULTS: Analysis 1 - Case 5 - SE Building & Oil/Gas Well - Pseudostatic Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.127 There were: 5601 successful analyses from a total of 8001 trial surfaces 2400 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.53 Results Summary - Lowest 99 Factor of Safety circles 530.00 4659.00 Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 206.84 4612.28 516.00 4662.00 281.20 5135.98 528.95 1.535 <-- Critical Surface 2 208.95 4612.98 518.11 4662.00 287.00 5120.17 513.16 1.538 3 205.79 4611.93 517.05 4662.00 278.61 5151.78 544.74 1.540 4 210.00 4613.33 516.00 4662.00 288.77 5104.43 497.37 1.542 5 204.74 4611.58 518.11 4662.00 276.02 5167.55 560.53 1.545 6 206.84 4612.28 521.26 4662.00 282.68 5151.71 544.74 1.546 7 207.89 4612.63 519.16 4662.00 284.43 5136.01 528.95 1.546 8 205.79 4611.93 516.00 4662.00 277.78 5151.89 544.74 1.548 9 208.95 4612.98 517.05 4662.00 286.19 5120.29 513.16 1.548 10 203.68 4611.23 519.16 4662.00 273.44 5183.31 576.32 1.548 11 204.74 4611.58 517.05 4662.00 275.19 5167.66 560.53 1.550 12 205.79 4611.93 522.32 4662.00 280.13 5167.50 560.53 1.550 13 208.95 4612.98 523.37 4662.00 288.45 5135.92 528.95 1.551 14 206.84 4612.28 520.21 4662.00 281.87 5151.83 544.74 1.552 15 208.95 4612.98 516.00 4662.00 285.38 5120.42 513.16 1.552 16 203.68 4611.23 518.11 4662.00 272.60 5183.41 576.32 1.553 17 210.00 4613.33 521.26 4662.00 290.19 5120.19 513.16 1.554 18 204.74 4611.58 516.00 4662.00 274.36 5167.77 560.53 1.555 Page 2 Derr 5 EQ.gar 19 202.63 4610.88 519.16 4662.00 270.01 5199.14 592.11 1.555 20 207.89 4612.63 518.11 4662.00 283.62 5136.13 528.95 1.556 21 210.00 4613.33 520.21 4662.00 289.39 5120.31 513.16 1.556 22 205.79 4611.93 521.26 4662.00 279.30 5167.61 560.53 1.556 23 207.89 4612.63 524.42 4662.00 285.92 5151.75 544.74 1.556 24 208.95 4612.98 522.32 4662.00 287.65 5136.04 528.95 1.557 25 206.84 4612.28 519.16 4662.00 281.05 5151.94 544.74 1.558 26 198.42 4610.00 516.00 4662.00 259.84 5230.65 623.68 1.558 27 207.89 4612.63 517.05 4662.00 282.80 5136.25 528.95 1.559 28 203.68 4611.23 517.05 4662.00 271.76 5183.51 576.32 1.559 29 204.74 4611.58 522.32 4662.00 276.75 5183.38 576.32 1.559 30 199.47 4610.00 517.05 4662.00 260.90 5230.65 623.68 1.560 31 201.58 4610.53 519.16 4662.00 266.58 5214.94 607.89 1.560 32 202.63 4610.88 518.11 4662.00 269.17 5199.23 592.11 1.560 33 203.68 4611.23 516.00 4662.00 270.92 5183.61 576.32 1.561 34 205.79 4611.93 520.21 4662.00 278.48 5167.72 560.53 1.561 35 206.84 4612.28 525.47 4662.00 283.39 5167.56 560.53 1.562 36 203.68 4611.23 523.37 4662.00 274.19 5199.12 592.11 1.562 37 202.63 4610.88 517.05 4662.00 268.32 5199.33 592.11 1.563 38 207.89 4612.63 523.37 4662.00 285.11 5151.87 544.74 1.563 39 210.00 4613.33 519.16 4662.00 288.58 5120.44 513.16 1.563 40 208.95 4612.98 521.26 4662.00 286.84 5136.16 528.95 1.564 41 201.58 4610.53 518.11 4662.00 265.72 5215.03 607.89 1.564 42 199.47 4610.00 516.00 4662.00 260.03 5230.74 623.68 1.564 43 204.74 4611.58 521.26 4662.00 275.91 5183.48 576.32 1.564 44 207.89 4612.63 516.00 4662.00 281.98 5136.36 528.95 1.565 45 205.79 4611.93 526.53 4662.00 280.86 5183.33 576.32 1.565 46 206.84 4612.28 518.11 4662.00 280.22 5152.05 544.74 1.566 47 207.89 4612.63 529.68 4662.00 287.45 5167.48 560.53 1.566 48 194.21 4610.00 516.00 4662.00 256.46 5246.44 639.47 1.566 49 202.63 4610.88 516.00 4662.00 267.47 5199.42 592.11 1.566 50 203.68 4611.23 522.32 4662.00 273.35 5199.22 592.11 1.566 51 200.53 4610.18 519.16 4662.00 263.13 5230.71 623.68 1.567 52 195.26 4610.00 517.05 4662.00 257.51 5246.44 639.47 1.567 53 208.95 4612.98 527.58 4662.00 289.15 5151.78 544.74 1.567 54 210.00 4613.33 525.47 4662.00 290.85 5136.06 528.95 1.567 55 201.58 4610.53 517.05 4662.00 264.87 5215.12 607.89 1.567 56 202.63 4610.88 523.37 4662.00 270.79 5214.94 607.89 1.568 57 206.84 4612.28 524.42 4662.00 282.57 5167.67 560.53 1.568 58 207.89 4612.63 520.21 4662.00 285.24 5135.89 528.95 1.568 59 200.53 4610.18 518.11 4662.00 262.27 5230.80 623.68 1.568 60 204.74 4611.58 527.58 4662.00 278.34 5199.09 592.11 1.568 61 210.00 4613.33 526.53 4662.00 291.65 5135.94 528.95 1.568 62 197.37 4610.00 519.16 4662.00 259.62 5246.44 639.47 1.569 63 206.84 4612.28 517.05 4662.00 279.40 5152.16 544.74 1.569 64 205.79 4611.93 519.16 4662.00 277.65 5167.83 560.53 1.569 65 196.32 4610.00 518.11 4662.00 258.57 5246.44 639.47 1.569 66 207.89 4612.63 522.32 4662.00 284.29 5151.98 544.74 1.570 67 198.42 4610.00 520.21 4662.00 260.67 5246.44 639.47 1.570 68 195.26 4610.00 516.00 4662.00 256.65 5246.52 639.47 1.570 69 203.68 4611.23 521.26 4662.00 272.51 5199.32 592.11 1.571 70 208.95 4612.98 520.21 4662.00 286.03 5136.28 528.95 1.571 71 210.00 4613.33 518.11 4662.00 287.78 5120.56 513.16 1.571 72 205.79 4611.93 525.47 4662.00 280.04 5183.44 576.32 1.571 73 199.47 4610.00 521.26 4662.00 261.72 5246.44 639.47 1.571 74 196.32 4610.00 517.05 4662.00 257.70 5246.52 639.47 1.571 Page 3 Derr 5 EQ.gar 75 205.79 4611.93 518.11 4662.00 276.82 5167.94 560.53 1.571 76 202.63 4610.88 522.32 4662.00 269.95 5215.03 607.89 1.572 77 204.74 4611.58 520.21 4662.00 275.08 5183.59 576.32 1.572 78 201.58 4610.53 523.37 4662.00 267.38 5230.73 623.68 1.572 79 207.89 4612.63 528.63 4662.00 286.64 5167.60 560.53 1.573 80 197.37 4610.00 518.11 4662.00 258.76 5246.52 639.47 1.573 81 198.42 4610.00 519.16 4662.00 259.81 5246.52 639.47 1.573 82 204.74 4611.58 526.53 4662.00 277.51 5199.20 592.11 1.573 83 204.74 4611.58 519.16 4662.00 274.25 5183.69 576.32 1.573 84 206.84 4612.28 523.37 4662.00 281.75 5167.78 560.53 1.574 85 200.53 4610.18 517.05 4662.00 261.40 5230.88 623.68 1.574 86 206.84 4612.28 516.00 4662.00 278.58 5152.27 544.74 1.574 87 208.95 4612.98 526.53 4662.00 288.34 5151.90 544.74 1.574 88 201.58 4610.53 516.00 4662.00 264.01 5215.21 607.89 1.575 89 210.00 4613.33 524.42 4662.00 290.05 5136.19 528.95 1.575 90 203.68 4611.23 527.58 4662.00 274.98 5214.93 607.89 1.575 91 199.47 4610.00 520.21 4662.00 260.86 5246.52 639.47 1.576 92 205.79 4611.93 517.05 4662.00 275.99 5168.04 560.53 1.576 93 207.89 4612.63 521.26 4662.00 283.48 5152.10 544.74 1.576 94 205.79 4611.93 524.42 4662.00 279.21 5183.55 576.32 1.576 95 196.32 4610.00 516.00 4662.00 256.84 5246.60 639.47 1.576 96 200.53 4610.18 516.00 4662.00 260.54 5230.97 623.68 1.576 97 200.53 4610.18 523.37 4662.00 263.96 5246.50 639.47 1.577 98 206.84 4612.28 529.68 4662.00 284.14 5183.39 576.32 1.577 99 203.68 4611.23 520.21 4662.00 271.67 5199.42 592.11 1.577 Critical Failure Surface (circle 1) Intersects: XL: 206.84 YL: 4612.28 XR: 516.00 YR: 4662.00 Centre: XC: 281.20 YC: 5135.98 Radius: R: 528.95 Generated failure surface: (20 points) 206.84 4612.28 223.44 4610.19 240.10 4608.63 256.80 4607.59 273.52 4607.08 290.25 4607.11 306.97 4607.66 323.67 4608.74 340.32 4610.34 356.92 4612.48 373.43 4615.13 389.86 4618.31 406.18 4622.01 422.37 4626.22 438.42 4630.94 454.31 4636.16 470.03 4641.88 485.57 4648.10 500.89 4654.81 516.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 206.84 0.74 -7.2 1.80 1.81 2 0.00 35.0 92.52 0.00 54.65 1.07 2 208.64 18.68 -7.2 7.40 7.46 2 0.00 35.0 2335.19 626.67 329.59 1.07 3 216.04 43.84 -7.2 7.40 7.46 2 0.00 35.0 5479.96 1880.02 770.10 1.07 4 223.44 16.43 -5.4 2.04 2.05 2 0.00 35.0 2054.07 731.41 1036.35 1.05 5 225.48 73.49 -5.4 7.31 7.34 3 100.00 18.0 9226.42 3331.68 1284.95 1.02 6 232.79 96.31 -5.4 7.31 7.34 3 100.00 18.0 12159.56 4442.48 1691.31 1.02 7 240.10 136.84 -3.6 8.35 8.37 3 100.00 18.0 17322.41 6348.75 2096.36 1.02 8 248.45 164.39 -3.6 8.35 8.37 3 100.00 18.0 20836.39 7655.51 2520.76 1.02 9 256.80 191.15 -1.7 8.36 8.37 3 100.00 18.0 24233.13 8894.46 2912.09 1.01 10 265.16 216.57 -1.7 8.36 8.37 3 100.00 18.0 27444.90 10064.84 3297.76 1.01 11 273.52 241.01 0.1 8.37 8.37 3 100.00 18.0 30516.33 11167.15 3647.20 1.00 12 281.89 264.25 0.1 8.37 8.37 3 100.00 18.0 33418.89 12199.89 3994.16 1.00 13 290.25 286.21 1.9 8.36 8.37 3 100.00 18.0 36144.99 13163.42 4302.04 0.99 14 298.61 307.21 1.9 8.36 8.37 3 100.00 18.0 38733.11 14057.79 4610.19 0.99 15 306.97 326.58 3.7 8.35 8.37 3 100.00 18.0 41099.71 14882.27 4876.84 0.99 16 315.32 345.30 3.7 8.35 8.37 3 100.00 18.0 43367.75 15636.97 5146.08 0.99 Page 4 Derr 5 EQ.gar 17 323.67 283.28 5.5 6.55 6.58 3 100.00 18.0 35509.03 12783.82 5347.07 0.98 18 330.22 293.43 5.5 6.55 6.58 3 100.00 18.0 36711.98 13163.79 5528.29 0.98 19 336.76 163.67 5.5 3.56 3.57 2 0.00 35.0 20459.02 7310.91 5594.93 0.96 20 340.32 314.67 7.3 6.68 6.73 2 0.00 35.0 39333.53 14034.01 5678.54 0.95 21 347.00 438.48 7.3 9.00 9.07 2 0.00 35.0 54890.69 19396.61 5879.57 0.95 22 356.00 426.86 8.9 8.72 8.82 2 0.00 35.0 53513.89 19334.36 5874.68 0.94 23 364.72 414.64 9.1 8.72 8.83 2 0.00 35.0 51986.46 19714.32 5709.03 0.94 24 373.43 378.39 10.9 8.21 8.37 2 0.00 35.0 47447.00 18949.93 5492.31 0.94 25 381.65 365.35 10.9 8.21 8.37 2 0.00 35.0 45816.34 19140.37 5311.79 0.94 26 389.86 303.24 12.8 7.07 7.25 2 0.00 35.0 38032.73 16688.23 5090.96 0.93 27 396.93 291.92 12.8 7.07 7.25 2 0.00 35.0 36617.27 16724.42 4910.06 0.93 28 404.00 80.52 12.8 2.00 2.05 5 0.00 45.0 8857.36 4737.57 4156.21 0.89 29 406.00 319.00 14.5 8.18 8.45 2 0.00 35.0 40021.73 18980.46 4610.30 0.92 30 414.18 301.58 14.6 8.18 8.46 2 0.00 35.0 37845.39 17861.48 4357.75 0.92 31 422.37 277.72 16.4 8.03 8.37 2 0.00 35.0 34859.67 16497.52 4063.15 0.92 32 430.39 258.78 16.4 8.03 8.37 2 0.00 35.0 32491.67 15265.39 3785.58 0.92 33 438.42 236.49 18.2 7.95 8.37 2 0.00 35.0 29704.54 13968.21 3468.13 0.92 34 446.37 215.73 18.2 7.95 8.37 2 0.00 35.0 27108.96 12604.04 3162.90 0.92 35 454.31 191.86 20.0 7.86 8.37 2 0.00 35.0 24123.63 11175.01 2822.19 0.91 36 462.17 169.36 20.0 7.86 8.37 2 0.00 35.0 21311.43 9680.96 2489.93 0.91 37 470.03 144.14 21.8 7.77 8.37 2 0.00 35.0 18156.92 8122.37 2126.94 0.91 38 477.80 119.99 21.8 7.77 8.37 2 0.00 35.0 15138.11 6499.21 1768.24 0.91 39 485.57 93.64 23.6 7.66 8.37 2 0.00 35.0 11843.42 4812.48 1383.96 0.91 40 493.23 67.94 23.6 7.66 8.37 2 0.00 35.0 8630.44 3061.60 999.66 0.91 41 500.89 44.84 25.4 8.80 9.75 2 0.00 35.0 5763.63 1273.89 561.31 0.91 42 509.70 9.46 25.4 6.30 6.98 1 150.00 22.0 1238.88 0.00 133.30 0.98 X -S Area: 8933.99 Path Length: 317.88 X -S Weight: 1121878.88 Page 5 GALENA 7.1 Analysis Results Version: 7.10.3.02 Derr 5 EQ Full.gar Licensee: J & T Consulting Project: Derr Pit Amendment File: P:\07123 Derr Gravel Pit\Slope Stability\Galena\Derr 5 EQ Full.gmf Processed: 07 Jun 2018 18:34:57 DATA: Analysis 1 — Case 5 - SE Building & Oil/Gas Material Properties (5 materials) Well - Pseudostatic - Full Material: 1 (Mohr -Coulomb Isotropic) - Overburden Cohesion Phi UnitWeight Ru 150.00 22.0 131.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru 0.00 35.0 125.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Weathered Bedrock Cohesion Phi UnitWeight Ru 100.00 18.0 141.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Bedrock Cohesion Phi UnitWeight Ru 2000.00 20.0 141.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (8 profiles) Profile: 1 347.00 Profile: 2 407.00 Profile: 3 200.00 Profile: 4 404.00 Profile: 5 407.00 Profile: 6 100.00 Profile: 7 407.00 Profile: 8 100.00 407.00 (3 points) Material beneath: 1 - Overburden 4659.00 356.00 4662.00 404.00 (2 points) Material beneath: 1 - Overburden 4662.00 530.00 4662.00 (3 points) Material beneath: 2 - Sand and Gravel 4610.00 347.00 4659.00 404.00 (2 points) Material beneath: 5 - Slurry Wall 4662.00 407.00 4662.00 (2 points) Material beneath: 2 - Sand and Gravel 4659.00 530.00 4659.00 (3 points) Material beneath: 3 - Weathered Bedrock 4610.00 200.00 4610.00 404.00 (2 points) Material beneath: 3 - Weathered Bedrock 4610.00 530.00 4610.00 (7 points) Material beneath: 4 — Stable Bedrock 4607.00 200.00 4607.00 404.00 4607.00 530.00 4607.00 Slope Surface (6 points) 100.00 4610.00 530.00 4662.00 Phreatic Surface (4 points) 200.00 4610.00 4662.00 4659.00 4610.00 4607.00 356.00 4662.00 404.01 4604.00 404.00 4662.00 406.99 4604.00 407.00 4662.00 Page 1 Derr 5 EQ Full.gar 100.00 4659.00 Failure Surface 406.00 4659.00 407.00 4659.00 530.00 4659.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 200.00 YL: 4610.00 XR: 526.00 YR: 4662.00 Centre: XC: 272.14 YC: 5205.65 Radius: R: 600.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 20.00 20.00 300.00 20 20 20 RESULTS: Analysis 1 - Case 5,- SE Building & Oil/Gas Well - Pseudostatic - Full Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 2.891 There were: 5601 successful analyses from a total of 8001 trial surfaces 2400 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.02 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 206.84 4612.28 516.00 4662.00 281.20 5135.98 528.95 2.017 <-- Critical Surface 2 208.95 4612.98 518.11 4662.00 287.00 5120.17 513.16 2.022 3 205.79 4611.93 517.05 4662.00 278.61 5151.78 544.74 2.024 4 210.00 4613.33 516.00 4662.00 288.77 5104.43 497.37 2.026 5 204.74 4611.58 518.11 4662.00 276.02 5167.55 560.53 2.029 6 207.89 4612.63 519.16 4662.00 284.43 5136.01 528.95 2.031 7 205.79 4611.93 516.00 4662.00. 277.78 5151.89 544.74 2.031 8 206.84 4612.28 521.26 4662.00 282.68 5151.71 544.74 2.033 9 204.74 4611.58 517.05 4662.00 275.19 5167.66 560.53 2.033 10 208.95 4612.98 517.05 4662.00 286.19 5120.29 513.16 2.033 11 203.68 4611.23 519.16 4662.0O 273.44 5183.31 576.32 2.034 12 208.95 4612.98 516.00 4662.00 285.38 5120.42 513.16 2.034 13 204.74 4611.58 516.00 4662.00 274.36 5167.77 560.53 2.037 14 203.68 4611.23 518.11 4662.00 272.60 5183.41 576.32 2.037 15 206.84 4612.28 520.21 4662.00 281.87 5151.83 544.74 2.038 16 205.79 4611.93 522.32 4662.00 280.13 5167.50 560.53 2.039 17 208.95 4612.98 523.37 4662.00 288.45 5135.92 528.95 2.040 18 202.63 4610.88 519.16 4662.00 270.01 5199.14 592.11 2.041 Page 2 Derr 5 EQ Full gar 19 210.00 4613.33 521.26 4662.00 290.19 5120.19 513.16 2.041 20 210.00 4613.33 520.21 4662.00 289.39 5120.31 513.16 2.041 21 207.89 4612.63 517.05 4662.00 282.80 5136.25 528.95 2.042 22 198.42 4610.00 516.00 4662.00 259.84 5230.65 623.68 2.042 23 207.89 4612.63 518.11 4662.00 283.62 5136.13 528.95 2.042 24 206.84 4612.28 519.16 4662.00 281.05 5151.94 544.74 2.043 25 205.79 4611.93 521.26 4662.00 279.30 5167.61 560.53 2.044 26 203.68 4611.23 516.00 4662.00 270.92 5183.61 576.32 2.044 27 203.68 4611.23 517.05 4662.00 271.76 5183.51 576.32 2.044 28 208.95 4612.98 522.32 4662.00 287.65 5136.04 528.95 2.044 29 199.47 4610.00 517.05 4662.00 260.90 5230.65 623.68 2.045 30 201.58 4610.53 519.16 4662.00 266.58 5214.94 607.89 2.046 31 207.89 4612.63 524.42 4662.00 285.92 5151.75 544.74 2.046 32 202.63 4610.88 517.05 4662.00 268.32 5199.33 592.11 2.046 33 202.63 4610.88 518.11 4662.00 269.17 5199.23 592.11 2.047 34 207.89 4612.63 516.00 4662.00 281.98 5136.36 528.95 2.047 35 205.79 4611.93 520.21 4662.00 278.48 5167.72. 560.53 2.048 36 204.74 4611.58 522.32 4662.00 276.75 5183.38 576.32 2.048 37 210.00 4613.33 519.16 4662.00 288.58 5120.44 513.16 2.048 38 201.58 4610.53 518.11 4662.00 265.72 5215.03 607.89 2.049 39 202.63 4610.88 516.00 4662.00 267.47 5199.42 592.11 2.049 40 199.47 4610.00 516.00 4662.00 260.03 5230.74 623.68 2.049 41 194.21 4610.00 516.00 4662.00 256.46 5246.44 639.47 2.050 42 208.95 4612.98 521.26 4662.00 286.84 5136.16 528.95 2.051 43 201.58 4610.53 517.05 4662.00 264.87 5215.12 607.89 2.051 44 203.68 4611.23 523.37 4662.00 274.19 5199.12 592.11 2.052 45 195.26 4610.00 517.05 4662.00 257.51 5246.44 639.47 2.052 46 204.74 4611.58 521.26 4662.00 275.91 5183.48 576.32 2.052 47 206.84 4612.28 518.11 4662.00 280.22 5152.05 544.74 2.052 48 206.84 4612.28 517.05 4662.00 279.40 5152.16 544.74 2.052 49 207.89 4612.63 523.37 4662.00 285.11 5151.87 544.74 2.052 50 206.84 4612.28 525.47 4662.00 283.39 5167.56 560.53 2.053 51 200.53 4610.18 518.11 4662.00 262.27 5230.80 623.68 2.053 52 195.26 4610.00 516.00 4662.00 256.65 5246.52 639.47 2.054 53 200.53 4610.18 519.16 4662.00 263.13 5230.71 623.68 2.055 54 210.00 4613.33 518.11 4662.00 287.78 5120.56 513.16 2.055 55 203.68 4611.23 522.32 4662.00 273.35 5199.22 592.11 2.055 56 205.79 4611.93 518.11 4662.00 276.82 5167.94 560.53 2.055 57 196.32 4610.00 517.05 4662.00 257.70 5246.52 639.47 2.056 58 197.37 4610.00 519.16 4662.00 259.62 5246.44 639.47 2.056 59 206.84 4612.28 516.00 4662.00 278.58 5152.27 544.74 2.056 60 196.32 4610.00 518.11 4662.00 258.57 5246.44 639.47 2.057 61 205.79 4611.93 519.16 4662.00 277.65 5167.83 560.53 2.057 62 208.95 4612.98 520.21 4662.00 286.03 5136.28 528.95 2.057 63 210.00 4613.33 525.47 4662.00 290.85 5136.06 528.95 2.058 64 207.89 4612.63 522.32 4662.00 284.29 5151.98 544.74 2.058 65 202.63 4610.88 523.37 4662.00 270.79 5214.94 607.89 2.058 66 205.79 4611.93 526.53 4662.00 280.86 5183.33 576.32 2.058 67 198.42 4610.00 520.21 4662.00 260.67 5246.44 639.47 2.058 68 206.84 4612.28 524.42 4662.00 282.57 5167.67 560.53 2.058 69 201.58 4610.53 516.00 4662.00 264.01 5215.21 607.89 2.058 70 200.53 4610.18 517.05 4662.00 261.40 5230.88 623.68 2.058 71 203.68 4611.23 521.26 4662.00 272.51 5199.32 592.11 2.058 72 204.74 4611.58 519.16 4662.00 274.25 5183.69 576.32 2.059 73 205.79 4611.93 517.05 4662.00 275.99 5168.04 560.53 2.059 74 197.37 4610.00 518.11 4662.00 258.76 5246.52 639.47 2.059 Page 3 Derr 5 EQ Full.gar 75 208.95 4612.98 527.58 4662.00 289.15 5151.78 544.74 2.059 76 199.47 4610.00 521.26 4662.00 261.72 5246.44 639.47 2.060 77 198.42 4610.00 519.16 4662.00 259.81 5246.52 639.47 2.060 78 196.32 4610.00 516.00 4662.00 256.84 5246.60 639.47 2.060 79 200.53 4610.18 516.00 4662.00 260.54 5230.97 623.68 2.060 80 207.89 4612.63 529.68 4662.00 287.45 5167.48 560.53 2.060 81 202.63 4610.88 522.32 4662.00 269.95 5215.03 607.89 2.061 82 210.00 4613.33 526.53 4662.00 291.65 5135.94 528.95 2.061 83 210.00 4613.33 517.05 4662.00 286.97 5120.69 513.16 2.061 84 204.74 4611.58 520.21 4662.00 275.08 5183.59 576.32 2.061 85 191.05 4610.00 516.00 4662.00 253.30 5262.30 655.26 2.062 86 204.74 4611.58 527.58 4662.00 278.34 5199.09 592.11 2.062 87 204.74 4611.58 518.11 4662.00 273.41 5183.79 576.32 2.062 88 197.37 4610.00 516.00 4662.00 257.02 5246.69 639.47 2.062 89 205.79 4611.93 525.47 4662.00 280.04 5183.44 576.32 2.062 90 208.95 4612.98 519.16 4662.00 285.22 5136.40 528.95 2.062 91 201.58 4610.53 523.37 4662.00 267.38 5230.73 623.68 2.063 92 206.84 4612.28 523.37 4662.00 281.75 5167.78 560.53 2.063 93 207.89 4612.63 521.26 4662.00 283.48 5152.10 544.74 2.063 94 192.11 4610.00 517.05 4662.00 254.35 5262.30 655.26 2.064 95 203.68 4611.23 519.16 4662.00 270.83 5199.51 592.11 2.064 96 204.74 4611.58 517.05 4662.00 272.57 5183.89 576.32 2.064 97 210.00 4613.33 524.42 4662.00 290.05 5136.19 528.95 2.065 98 198.42 4610.00 518.11 4662.00 258.94 5246.60 639.47 2.065 99 199.47 4610.00 520.21 4662.00 260.86 5246.52 639.47 2.065 Critical Failure Surface (circle 1) Intersects: XL: 206.84 YL: 4612.28 XR: 516.00 YR: 4662.00 Centre: XC: 281.20 YC: 5135.98 Radius: R: 528.95 Generated failure surface: (20 points) 206.84 4612.28 223.44 4610.19 240.10 4608.63 256.80 4607.59 273.52 4607.08 290.25 4607.11 306.97 4607.66 323.67 4608.74 340.32 4610.34 356.92 4612.48 373.43 4615.13 389.86 4618.31 406.18 4622.01 422.37 4626.22 438.42 4630.94 454.31 4636.16 470.03 4641.88 485.57 4648.10 500.89 4654.81 516.00 4662.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 206.84 15.82 -7.2 8.30 8.37 2 0.00 35.0 1977.18 24659.76 3072.63 1.05 2 215.14 47.45 -7.2 8.30 8.37 2 0.00 35.0 5931.03 25205.13 3387.28 1.05 3 223.44 16.43 -5.4 2.04 2.05 2 0.00 35.0 2054.07 6250.42 3573.06 1.04 4 225.48 73.49 -5.4 7.31 7.34 3 100.00 18.0 9226.42 22603.54 3728.37 1.02 5 232.79 96.31 -5.4 7.31 7.34 3 100.00 18.0 12159.56 22917.86 3980.80 1.02 6 240.10 136.84 -3.6 8.35 8.37 3 100.00 18.0 17322.41 26429.06 4225.19 1.01 7 248.45 164.39 -3.6 8.35 8.37 3 100.00 18.0 20836.39 26699.23 4474.57 1.01 8 256.80 191.15 -1.7 8.36 8.37 3 100.00 18.0 24233.13 26900.80 4696.22 1.01 9 265.16 216.57 -1.7 8.36 8.37 3 100.00 18.0 27444.90 27033.03 4907.36 1.01 10 273.52 241.01 0.1 8.37 8.37 3 100.00 18.0 30516.33 27097.03 5088.86 1.00 11 281.89 264.25 0.1 8.37 8.37 3 100.00 18.0 33418.89 27091.07 5261.83 1.00 12 290.25 286.21 1.9 8.36 8.37 3 100.00 18.0 36144.99 27016.03 5403.47 1.00 13 298.61 307.21 1.9 8.36 8.37 3 100.00 18.0 38733.11 26872.28 5538.31 1.00 14 306.97 326.58 3.7 8.35 8.37 3 100.00 18.0 41099.71 26659.63 5640.43 0.99 15 315.32 345.30 3.7 8.35 8.37 3 100.00 18.0 43367.75 26377.74 5737.13 0.99 16 323.67 283.28 5.5 6.55 6.58 3 100.00 18.0 35509.03 20503.21 5793.69 0.99 Page 4 Derr 5 EQ Full.gar 17 330.22 293.43 5.5 6.55 6.58 3 100.00 18.0 36711.98 20243.76 5839.91 0.99 18 336.76 163.67 5.5 3.56 3.57 2 0.00 35.0 20459.02 10889.32 5833.74 0.97 19 340.32 314.67 7.3 6.68 6.73 2 0.00 35.0 39333.53 20264.60 5832.78 0.97 20 347.00 438.48 7.3 9.00 9.07 2 0.00 35.0 54890.69 26736.73 5964.32 0.97 21 356.00 426.86 8.9 8.72 8.82 2 0.00 35.0 53513.89 25312.14 5969.76 0.96 22 364.72 414.64 9.1 8.72 8.83 2 0.00 35.0 51986.46 24553.06 5795.74 0.96 23 373.43 378.39 10.9 8.21 8.37 2 0.00 35.0 47447.00 22483.56 5582.68 0.95 24 381.65 365.35 10.9 8.21 8.37 2 0.00 35.0 45816.34 21654.21 5390.44 0.95 25 389.86 303.24 12.8 7.07 7.25 2 0.00 35.0 38032.73 18044.68 5168.46 0.95 26 396.93 291.92 12.8 7.07 7.25 2 0.00 35.0 36617.27 17319.92 4975.63 0.95 27 404.00 80.52 12.8 2.00 2.05 5 0.00 45.0 8857.36 4767.99 4216.26 0.92 28 406.00 319.00 14.5 8.18 8.45 2 0.00 35.0 40021.73 18980.46 4671.63 0.95 29 414.18 301.58 14.6 8.18 8.46 2 0.00 35.0 37845.39 17861.48 4416.13 0.95 30 422.37 277.72 16.4 8.03 8.37 2 0.00 35.0 34859.67 16497.52 4123.97 0.95 31 430.39 258.78 16.4 8.03 8.37 2 0.00 35.0 32491.67 15265.39 3842.61 0.95 32 438.42 236.49 18.2 7.95 8.37 2 0.00 35.0 29704.54 13968.21 3525.99 0.94 33 446.37 215.73 18.2 7.95 8.37 2 0.00 35.0 27108.96 12604.04 3216.18 0.94 34 454.31 191.86 20.0 7.86 8.37 2 0.00 35.0 24123.63 11175.01 2874.58 0.94 35 462.17 169.36 20.0 7.86 8.37 2 0.00 35.0 21311.43 9680.96 2536.90 0.94 36 470.03 144.14 21.8 7.77 8.37 2 0.00 35.0 18156.92 8122.37 2171.24 0.95 37 477.80 119.99 21.8 7.77 8.37 2 0.00 35.0 15138.11 6499.21 1806.24 0.95 38 485.57 93.64 23.6 7.66 8.37 2 0.00 35.0 11843.42 4812.48 1417.46 0.95 39 493.23 67.94 23.6 7.66 8.37 2 0.00 35.0 8630.44 3061.60 1025.91 0.95 40 500.89 44.84 25.4 8.80 9.75 2 0.00 35.0 5763.63 1273.89 580.48 0.95 41 509.70 9.46 25.4 6.30 6.98 1 150.00 22.0 1238.88 0.00 147.09 1.01 X -S Area: 8933.99 Path Length: 317.88 X -S Weight: 1121879.38 Page 5 APPENDIX D JT J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Project Slope Stability Analysis PREUMINARY SAND AND GRAVEL MINERAL EVALUATION 30 -ACRE PARCEL - NORTH OF 8Th STREET AND EAST OF BALSAM AVENUE NORTHEAST % OF SECTION 4, TOWNSHIP 5 NORTH, RANGE 6$ WEST GREELEY, WELD COUNTY, COLORADO TERRACON PROJECT NO. 20016242 JANUARY 11, 2002 Prepared for: DUST & DIRT EXCAVATING, LLC P.O. BOX 2295 GREELEY, COLORADO 80632 ATTN: MR. DOUG AND DARWIN DERR Prepared by: Terrecon 301 North Howes. Street Fort Collins, Colorado 80521 llerrac:on January 11, 2002 Dust & Dirt Excavating. LLD P.O. Box 2295 Greeley, Colorado 80632 Attn: Mr. Doug and Darwin Derr lierracon 301 1y Howes • P.O. Box 5U3 for Collins. Colorado 805210503 (970) 4844359 fax: "(970) 4844454 Re: Preliminary Sand and Gravel Mineral Evaluation Approximate 29 Acre Parcel Located North of 8t Street and East of Balsam Avenue Northeast'/. of Section 4, Township 5 North, Range 65 West Greeley, Weld County, Colorado Terracon Project No. 20015242 Terracon has completed a preliminary sand and gravel mineral evaluation for the approximate 29 -acre parcel situated on the east side of Balsam Avenue, approximately %- Mile north of 8th Street, south of the Eaton Ditch in east Greeley, Colorado: This study was performed in general accordance with our Proposal No. D2001357 dated October 18, 2001 The results of our engineering study, including the boring location diagram, laboratory test results, test boring records conducted by Terracon and Layne -Western, and the conclusions and recommendations needed to aid in the consideration of this tract of land to be utilized as a sand and gravel pit from a geotechnical point of view are attached. Further details are provided in this mineral evaluation report We appreciate the opportunity to be of service to you on this phase of your project. If you have any questions concerning this report, or if we may be of further service to you, please feel free to contact us at your convenience. Sincerely, TERRACON r � / David A. Richer, P. `'^ ueg . J , P.E. Geotechnicat Engines' A^a. '' Manager ffice Manager Copies to: Addressee (4) 0`��1NM11lIfRltyg, g G �. 0," 25084 _ a #40'OkAI �r�rhttt{flit{t,0 Arizona al Arkansas ■ Colorado r Oaorgta ■ Idaho ■ llinoia ■ Iowa ■ Kansas U 'Kentucky u Minnesota A Missouri Mortoe Nebraska to Nevada ■ NewAlleiuca ■ (Mahon,. i Tennessee U Tetras II Utah R Wisconsin ■ Wyontltg °wittyEngtnee► ng Sit= 1905 TABLE OF CONTENTS Page No. Letter of Transmittal INTRODUCTION .....1 PROPOSED CONSTRUCTION 1 SITE EXPLORATION 1 Field Exploration 2 Laboratory Tests 2 SITE CONDITIONS3 SUBSURFACE CONDITIONS 3 Geology....... 3 Soil and Bedrock Conditions 4 Field and Laboratory Test Results 5 CONCLUSIONS AND DISCUSSION 5 GENERAL COMMENTS 6 APPENDIX A Vicinity Map — Figure 1 Soil Conservation Weld County, Colorado Map - Figure 2 Site Plan and Boring Location Diagram Figure 3 Log of Borings - Terracon Test Boring Nos, 1, 2, and 3 and Layne-Westem Boring Nos. B-1, 8-2, B-3, and R-4 APPENDIX B Grain -Size Distribution Curves APPENDIX C General Notes iI PRELIMINARY SAND AND GRAVEL MINERAL EVALUATION 30 -ACRE PARCEL - NORTH OF 8T" STREET AND EAST OF BALSAM AVENUE NORTHEAST Y4 OF SECTION 4, TOWNSHIP 5 NORTH, RANGE 65 WEST GREELEY, WELD COUNTY, COLORADO TERRACON PROJECT NO. 20015242 JANUARY 11, 2002 INTRODUCTION This report contains the results of our preliminary sand and gravel mineral evaluation for an approximate 29 -acre parcel situated on the east side of Balsam Avenue, approximately 34 -mile north of 8th Street, south of the Eaton Ditch in east Greeley, Colorado. The site is generally located in the North 1/4 of Section 4, Township 5 North, Range 65 West of the 6th P.M., Weld County, Colorado. The purpose of these services is to provide information and geotechnical engineering recommendations relative to: subsurface soil and bedrock conditions • groundwater conditions • physical properties and estimated quantities of overburden and granular materials. The conclusions and recommendations contained In this report are based upon the results of our field and laboratory testing, engineering analyses, and experience with similar soli conditions, and our understanding of the proposed project. PROPOSED CONSTRUCTION Based on the Information provided, it is Terracon's understanding approximately 29 -acres of land situated on the east side of Balsam Avenue, approximately 14 mile north of 8t Street (Highway 263), south of the Eaton Ditch, presently being utilized as grazing and/or agricultural property as well as for the Oil industry, is to be considered for a future gravel pit for the mining and extraction of sand and gravel reserves. SITE EXPLORATION The scope of the services performed for this project included a site reconnaissance by an engineering geologist, a subsurface exploration program, limited laboratory testing and engineering analysis. �s Preliminary Sand and Gravel Mineral Evaluation 29 Acre Parcel East of Balsam Avenue Greeley, Weld County, Colorado Project No 20015242 Terracon Field Exploration A total of 7 test borings were drilled at the site during month of November of 2001. Terracon drilled 3 test borings, (identified as Test Boring Nos. 1, 2, and 3 shown on the enclosed Site Plan, Figure 3) on November 5 and 6, 2001 to approximate depths of 75 to 90 -feet below existing site grades. These 3 borings were advanced with a CME 75 truck -mounted drilling rig, utilizing 4 -1/4 -inch inside diameter hollow stem augers. After completing the first three borings, the client elected to obtain a specialized drill rig capable of extending the test borings to the bedrock stratum by means of air rotary equipment. An air rotary rig from Layne -Western of Denver, Colorado, with assistance from the clients conducted the remaining 4 test borings, (identified as Test Boring Nos., B-1, B-2, B-3, and B-4 shown on the enclosed Site Plan, Figure 3) and logged the depths of the soil stratification to bedrock. These test borings extended to approximate depths of 82 to 90 -feet below existing site grades. The borings were located in the field by measurements from existing site features at the direction of Doug and Darwin Derr. After completing the related field services, the client hired a land surveyor, which provided the appropriate boring locations and elevations as presented in this report. Continuous lithologic logs of each boring drilled by Terracon (Test Boring Nos. 1, 2, and 3) were recorded by the engineering geologist during the drilling operations. At selected intervals, samples of the subsurface materials from these test borings were taken by driving a split -spoon sampler. Auger cutting samples from the air rotary Layne-Westem Test Boring Nos. B-1, B-2, B-3, and B-4, were obtained by the client at selected intervals and were delivered to Terracon's Greeley office for further evaluation and laboratory testing. Penetration resistance measurements were obtained by driving the split -spoon into the subsurface materials with a 140 -pound hammer falling 30 inches for the Terracon test borings. These penetration resistance values are a useful index to the consistency, relative density or hardness of the materials encountered. Groundwater measurements were made in Test Boring Nos. 1, 2, and 3 at the time of the initial site exploration. Groundwater measurements were not recorded or provided to Terracon for the Layne -Western borings prior to preparation of this report. Laboratory Testing All samples retrieved during the field exploration for Test Boring Nos. 1, 2, and 3 and the composite samples collected by the client for the Layne -Western borings were returned to the laboratory for observation by the project geotechnical engineer, and were classified in 2 Preliminary Sand and Gravel Mineral Evaluation 29 Acre Parcel East of Balsam Avenue Greeley, Weld County, Colorado Project No. 20015242 Terracon accordance with the Unified Soil Classification System described in Appendix C. Samples of bedrock were classified in accordance with the general notes for Bedrock Classification. At that time, the field descriptions were confirmed or modified as necessary and an applicable laboratory testing program was formulated to determine engineering properties of the subsurface materials: Boring logs were prepared and are presented in Appendix A. Selected soil samples were tested for the following engineering properties: • Water content • Grain size distribution Laboratory test results are presented in Appendix B. All laboratory tests were performed in general accordance with the applicable ASTM, local or other accepted standards: SITE CONDITIONS The site is presently utilized as agricultural land and/or grazing land as well as by the Oil Industry: The site is relatively fiat exhibiting positive surface drainage in the southeast direction. South of the site is vacant, undisturbed land typical in terrain as the subject site; West of the site is Balsam Avenue and north id the Eaton Ditch. The Cache La Poudre River Is situated approximately 1 -mile south of the site. An abandoned gravel pit is located directly west of the subject site on the west side of Balsam Avenue, SUBSURFACE CONDITIONS Geology The proposed area is located within the Colorado Piedmont section of the Great Plains physiographic province. The Colorado Piedmont, formed during Late Tertiary and Early Quaternary time (approximately 2,000,000 years ago), is a broad, erosional trench, which separates the Southern Rocky Mountains from the High Plains, Structurally, the site lies along the western flank of the Denver Basin. During the Late Mesozoic and Early Cenozoic Periods (approximately 70,000,000 years ago), intense tectonic activity occurred, causing the uplifting of the Front Range and associated downwarping of the Denver Basin to the east. Relatively flat uplands and broad valleys characterize the present-day topography of the Colorado Piedmont in this region. The site is underlain by the Cretaceous Pierre Formation at approximate depths of 68 to greater than 90 -feet below existing site grades. The bedrock is 3 Preliminary Sand and Gravel Mineral Evaluation 29 Acre. Parcel East of Balsam Avenue Greeley, Weld County, Colorado Project No. 20015242 Terracon overlain by alluvial sands, gravels and clays of Pleistocene and/or Recent Age. The sand and gravel represent an ancient Terrace of the Poudre River. Soil and Bedrock Conditions The following describes the characteristics of the primary soil strata encountered at the site in order of increasing depths, along with current groundwater conditions: • Overburden Material - The overburden material consisted of slightly cohesive silty clayey sand (SC) with trace amounts of gravel and/or cobbles. This material was generally encountered at the surface and extended to depths of approximately 2-1/2 to 7 -1/2 -feet below the ,surface. An approximate 3 to 7 -foot Sandy Lean Clay lens was encountered at increased depths in Test Boring Nos. 1, 2, and 3 at approximately 47 to 56 -feet below site grades. The silty clayey sand layers are relatively fine in nature, medium dense in relative density and moist in -situ, while the clay layers are medium stiff to stiff in consistency and saturated. Silty Sand with Gravel and Cobbles:. - Well Graded Sand with Graven. Well Graded Sand with Silt.' Poorly Graded Sand with Gravel, Poorly Graded Gravel with Sand. Poorly Graded Gravel with Silt and Sand, Well Graded Sand with Gravel, and Well Graded Gravel with Sand — These strata were encountered in all borings at approximate depths of 2-1/2 to 7- 1/2 feet below the surface, and extended to the bedrock below in all but Test Boring Nos. B-3, and B-4, where bedrock was not encountered to maximum depths of exploration, 90 - feet. The sand and gravel stratum is poorly graded to well graded, loose to dense, contains moderate amounts of silt, and is moist to wet in -situ. It is estimated that the maximum size of gravel, and/or cobbles encountered with depth is typically less than C- inches diameter. • W athered Claystone/Siltstonee Bedrock - The bedrock stratum was encountered below the sand and gravel layer at approximate depths 68 to greater than 90 -feet feet below existing site grades. Groundwater - Groundwater was encountered in Test Boring Nos. 1, 2, and 3 at approximate depths of 4 to 4 -1/2 -feet below the surface at the time of the initial exploration. Water measurements were not recorded for the Layne-Westem test borings. However, it is anticipated that water levels would be relatively consistent at approximate depths of 4 to 6 -feet below site grades. Water levels in this area are subject to change due to seasonal variations and fluctuations in irrigation practices. 4 Preliminary Sand and Gravel Mineral Evaluation 29 Acre Parcel - East of Balsam Avenue Greeley, Weld County, Colorado Project No. 20015242 Terracon The stratification boundaries shown on the enclosed boring logs represent the approximate locations of changes in soil types; in -situ, the transition of materials may be gradual. According to the Soil Survey of Weld County, Colorado and as shown on the enclosed soil conservation map, Figure 2 in Appendix A, the soils at the site consist of: 3 —Aquolls and Aquents, gravelly substratum -9 • 10 Bankard sandy loam, 0 to 3 percent slopes. . —y 68- Ustic Torriorhents, moderately steep. Field and Laboratory Test Results ?fy,rriA4f°G r_ - Field test results indicate that the overburden silty clayey sand layers are medium dense in relative density. The coarse sand with gravel stratum varies from loose to dense in relative density and the bedrock stratum varies from weathered to hard with depth. CONCLUSIONS AND DISCUSSION It is Terracon's understanding that the area under evaluation, approximately 29 -net acres, based on plan line dimensions, is being considered as a potential gravel pit. Based on this preliminary investigation and number of test borings drilled at the site, it is Terracon's opinion the sand with gravel material encountered during the field exploration at various depths is suitable for use as construction aggregate material. The sand and gravel materials appear to satisfy the quality requirements to meet Colorado Department of Transportation specifications for Class 1 Structure Backfill, Class 1 to 3 Aggregate Base Course and could be processed to obtain Class S and 7 Aggregate Base Course if the course aggregate meets durability requirements. The gravel encountered appears to be of good quality and contains durable rock fragments composed of igneous and orphic rock fragments. The overburden thickness encountered in the test borings ranges from approximately 2-1/2 to 11 -feet in thickness. The underlying granular sand with gravel strata thicknesses encountered during the drilling operations, (based on available information provided to Terracon for the Layne -Western; borings) ranges from approximately 57 to 84 -1/2 -feet Based on these thicknesses, plan line dimensions for the proposed 29 -acre parcel, and approximate areas of potential mining operations, there are approximately Q.3 million cubic Yards of overburden material that willJjaye to be removed to obtain approximately 3.5 million cubic yards of sand, and gravel material, Hence, the average ratio of sand and gravel volume to overburden 5 I t Preliminary Sand and Gravel Mineral Evaluation 29 Acre Parcel — East of Balsam Avenue Greeley, Weld County, Colorado Project No 20015242 Terracon volume is approximately 11.6. The above referenced quantities are strictly estimated values based upon average thickness of layers, average depth to bedrock and straight-line plan dimensions. These estimates do not account for variations of thicknesses, actual areas of mining and/or anticipated cut slopes. Variations may be encountered in the field when gravel extraction/mining operations take place. Safe distances should be kept from property lines, roads,. and waterways. Since the sand and gravel strata was encountered below the groundwater, temporary dewatering of the gravel pit or use of a drag line will be required to remove the sand and gravel material. Excavation and possibly dewatering of the pit should be performed in such a manner as to protect the adjacent properties, roads, railroads and waterways. GENERAL COMMENTS Variations in overburden and sand and gravel stratum thicknesses, the quantity of the sand and gravel, as well as the soil and groundwater conditions, may exist between test borings, These variations may not become evident until gravel/mining operations take place. Additional test borings, test pits, and laboratory analysis may be required prior to the proposed gravel/mining operations to more accurately evaluate the quantity and quality of the granular Materials encountered at the site. APPENDIX A PROPOSED oRAVEi.Prr srr antVer flGu 1. 5t' VICINIl1' MAP PROPOSED 0MGRAVEL PIT rA-Ir Or 04Ik 5ANI AVE., . 01011 OF 8th 51% DAR IMSCAtION ONLY. POTION PURPOSE% LTREELE p COLORADO irerracon 901 $ . tlowez$treet Tort Caltin5, Dolor do 84921 24rl i { rYo Oats lI NTS 3 10 10 3 t+at.tt e5.i;R tt t+aa. a0Alw41 FIGURE 2r 5Oft CONSERVATION MAP PROPOwDAERP GRA.VQ. PI ass Or CALSAM AVt. HOKIN Or St, CRC .XY; COLORADO lIorracon Sot tit; esowts saw.. Port Cc!++dr;,Cdas 040.b0002,' OO 15242 VIC Ace TE'T BORMG NO5. I , 2 s 3 £ R U. 5" TERRACON ON NOV£MBCR 5 t G. 2001 .K 3 vpt ..'SEmGE9 sqt Cw-ssw:4?+). 44.0005E1. G 7957 BOR:NG NO5, 8- I . S-2, 3,3 s 8=4 DRILLED BY L YNE-WE5`fERN J 3e5iff r RJ+VEL P17 rsir 9Atitxvt..NC:100CAPaci+Ss. Gmni.` 4. C4l.Cml7t rerracon 06, COA-1 s GCJa,'l SC*2? ror. ;5242 i i 1 i LOG OF BORING NO. 1 Page 1 of 2 CUENT Dougand Darwin Derr ARCHITECT/ ENGINEER SITE WE Corner of Balsam Avenue & 8th Street Greeley, Colorado PROJECT Derr Gravel Pit M GRAPHIC LOG DESCRIPTION Approx. Surface Sev, 4828.64 ft ie a USCS SYMBOL AMPLER `-- -- NUMBER } cc i m m 18 DRY UNIT VW Pef UNCONFINED`. STRENGTH.psi SJ<TY CLAYEY SAND trace GRAVEL _ Tan, brown, dry to moist, loose I ermlttent Sa • n CIa La era c .. .; t e , _ .'i.� t - • v'� 1 SR 12 4 1R 2 Tar% brown, moist to wet, loose to medium dense * Classified as Poorly Graded Sand with Gravel 4603 5 10 z 2 AS 17 111 14 A _ 15 : n SS 12 ?A 12A _ 4 SS 1? _ 11 '15 25 _ SILTY SAND ' GRAVEL Tan, erowrt, moist to wet, loose to medium don_ * Cl hied as Weil Graded Sand with Silt 49 4579.0 3O _ 5 S.S., 12 a 721 7 35— _ 40 ' R SS 12 94 17 n - Continued Next Page do— 7 .RS 19 7 292 The stratification rho st atp cation lines • �� w the �e Mei between *ell walla* type*: In-e*u,the transition may be pre duet i WATER LEVEL OBSERVATIONS, ft BORING STARTED 11.5-01 WL St 4 WD X 3.8 AB BORING COMPLETED ` 11-5-01 'WI_ RIG CME-75 FOREMAerr N AN ARS M.. Water Checked 24 Hrs. A8 APPROVED DAR JOB # 20015242 LOG OF BORING NO. 1 Page 2 of 2 CLIENT Doug and Darwin Derr ARCHITECT/ ENGINEER SITE NIE Corner of Balsam Avenue & 8th Street Greeley, Colorado PROJECT Derr Gravel Pit DEPTH, it. USCS SYMBOL SAMPLES TESTS v a� p O DESCRIPTION NUMBER TYPE RECOVERY. in: z g i7 it WATER CONTENT. IS pd 1MJJNA A2ia UNCONFINED STRENGTH. psi SANDY LEAN CLAY // '/� Tan, gray, moist to wet, stiff to very stiff 4572.5 _ 'i3 ti;, SILTY SAND with GRAVEL, _ • •;. Tan, brown, moist to wet, loose to medium dense — eo R .PA 1? fifl 11 $ s: ? eB 4560.5 is-_ - WEATHERED SILTSTONEICLAYST,Qf' g -- 71 Gray,, moist, moderately hard70— 4557.5 =Ss=► Si jSTONE/CLAYSTONk — � Gray, moist, and to very hard - _ 7g 4553,5 _ 0 ` Af 75 15 A BOTTOM OF BORING The stratification Knee represent the approximate boundary between soil and rook types: iniltu, thetnarteition maybe aeduaa. ,,••••••� ' WATER LEVEL OBSERVATIONS, ft BORING STARTED 11-5.01 MIL 2 4 WD X 3.8 AR BORING COMPLETED 11-5-41 Wt. I iferracc3n RIG CME-75 FOREMAN.. ARS W Water Checked 24 Hm. AB APPROVED DAR I JOB # 20015242 a WI. LOG OF BORING NO. 2 CLIENT Doug and Darwin Derr SITE WE Cooler of Balsam Avenue & 8th Street Greeley, Colorado h'. DESCRIPTION Approx. Surface Elev.: , 4630.12 ft SANDY LEAN CLAY trace GRAVEL and COBBLES NTan, trav hoist to vet stiff to very stiff an, brown, moist to wet, oose to medium dense ▪ Cobbles Encountered • Classified as Silty Gravel with Sand 4627 siLTY SAND trace GRAVEN Tan, brown, moist to wet, loose to medium dense Continued Next Page The stratification Ines represent the approttnate boundary tines berween soil and rook types: Inoltu, the transition may be ptadusI. WATER LEVEL OBSERVATIONS, ft 4.5 WD I .VL I WL. Initial Water Levet Reading ARCHITECT /ENGINEER PROJECT v Derr Gravel Pit SAMPLES Page 1 of 2 TESTS w m a z a. .1' a z Z1 °OW ranm %8. i OOP SS, 11 17 in R 10� 15 9 SS 19 19 15 t a SS 12 2R - 15.0 5= 4 s SS : 19 50 15 a 9$. 71 6 RS i rerracon 19 37 10 7 BORING STARTED 11-5-01; BORING COMPLETED 11-6.01 RIG CME-75 ` FOREMAN ARD APPROVED DARJOB # 20015242 LOG OF BORING NO. 2 Page 2 of 2 CLIENT Doug and Darwin Derr ARCHITECT! ENGINEER SITE NIE Corner of Balsam Avenue & 8th. Street Greeley, Colorado PROJECT Derr Gravel Pit 2 DESCRIPTION g 0 SAMPLES TESTS 5 , .e W — ? SI. �b .• r • ' l':',:f; SILTY$ ND ice GRAVEL` - 55 — 60 - — 70� � Tan, brown, moist to wet, loose to medium 4574 i SANDY LEAN CLAY Tan, pray, moist to wet, stiff to very stiff ft 4570 j. t ;' • .:.i SILTY SAtip with GRAVE(, Tan, `brown, moist to wet, loose to medium dense 419 � 6 ►i I ► � L 4548 era - hard ! T 4548 843 �r`��7tI L rV nT'I�l / r i 4 o0ru. c' 4b., Gray, moist, hard to very hard I ittent Sandstone Lenses TOM OF BoWNG I The. lallonInesnrpts stitthe"We s% Mee tIii lwssn soil end teak twee In u, the thmeltien MY 00 I,: 4 WATER LEVEL OBSERVATIONS, ft " " r ,- BORING STARTED 11 01' 1NL St 4 5 WD BORING COMPLETED 11-8-01 wt err RIG CME-75 FOREMAN ARS Wt " , Initial Water Level Reading APPROVED DAR JOB # 20015242_ i I I I, II Ii LOG OF BORING NO. 3 Page of 2 CLIENT Doug and Darwin Derr ARCHITECT / ENGINEER SITE NIE Corner of Balsam Avenue & 8th Street °male Colorado PROJECT Derr Gravel Pit DESCRIPTION Approx. Surface Elev.: 4630.58 ft USCS SYMBOL SAMPLES TESTS NUMBER TYPE .a Ir UNCONFINED STRENGTH, pi[ _ SANDY LEAN CI, AY trace GRAVE(, ;:: Tan . _ , moist to - stiff tov= stiff SAND with GRAVEL Tan, brown, moist to wet, loose to medium 2 dense • Cobbles Encountered * Classified as Well Graded Sand with Gravel 5 1 S.s 12 15 12 To 15 ? 12 26 115 so 2 ng 12 M 154 35 _► • tr. Z. -I an, brown, moist to wet, loose to medium dense 7 d :F..^, 12 2j1 15 4 46 60 .. an, gray, moist to wet, stiff to very stiff . Contirttted Next Page T * t� s thi *V S bourxMry t si s$ and roc* 1 1i�. X1 41, 7 1! may be y. w.N WATER LEVEL. OBSERVATIONS, ft errac ® er BORING STARTED 11.8-01' WL c• 4.5 WQ1 BORING COMPLETED 11-8-01 WL RIG CME75 FOREMAN AR s Wl- initial Water Level Reediin APPROVED DAR JOB* 20015242 r.. LOG OF BORING NO. 3 Page 2 of 2 iThe 3 CLIENT Doug and Darwin Derr ARCHITECT/ ENGINEER SITE NM Corner of Balsam Avenue & 8th Street Greeley, Colorado PROJECT Derr Gravel Pit GRAPHIC LOG DESCRIPTION or a USCS SYMBOL SAMPLES TESTS NUMBER F- RECOVERY, In. COm WATER CONTENT,% DRYUNITWT Pet UNCONFINED STRENGTH, psi • C C• ;s ' ,.;� ; .r ' • ',• ' - SILTY sov with GRAVEL _ `. Tan, brown, moist to wet, loose to medium dense * Cobbles Encountered 454415 5g fi ,$R '19 , .Tit; 1R4° _ 70: R AC 147' so- - 87 t18rd Gray, mo hand so ` AC 17 R to very hard f—_°- 8O1I OM OF BORING shaNNwtton Nnse represent the approximate boundary peas between sob and reek kre* the transition may be gradual. WATER LEVEL OBSERVATIONS, ft • lieBORING ac BORING STARTED 11-8-01 WL � � �.5 WD 1 COMPLETED 11401 I wt z RIG CME-75 FOREMAN ARS w 1 i. lnaial Water Level Reading APPROVED DAR JoB # 20015242 i 4 CLIENT Dou and Darwin Derr LOG OF BORING NO. BI SITE NIE Corner of Balsam Avenue & 8th Street Greeley, Colorado DESCRIPTION o/ APprox. Surface Elev.: 4628.24 ft ARCHITECT / ENGINEER PROJECT SANDY LEAN CLity tee ORAV Tans may, moist to wet, stiff to very stiff SILTY SAND vela) GRAVEL Tarp, brown, moist to wet, loose to medium dense ,.; • sifted as Poorly Graded Gravel with sand • • SILTY SAND trace GRAVEL, Tan, brown, moist to wet loose to medium dense SILTY SAND with GRAVEL Tan, brown. moist to wet, loose to medium dense • Classified as Poorly Graded Gravel with Sand 4t933 4591 Continued Next Page !$ The stratificetionlines represent the apprcod,nate boUn ant Mee gbotwsen sot: and took types: In -situ, the transition may be gradual. WATER LEVEL OBSERVATIONS, ft ";Wt,• a a 400. c a Derr Gravel Pit SAMPLES Page 1 012 TESTS w 3 i2 W 0. vow 1 AC 2 AC 35 arm 3 AC 4 AC 45 '", 5 AC 6 AC AIM lrerracon BORING STARTED 11-501' BORING COMPLETED 11-&01 RIG LW -AR FOREMAN ARS APPROVED DAR JOB # 20015242, LOG OF BORING NO. BI Page 2 of 2 CUENT Douq end Darwin Den ARCHITECT / ENGINEER SITE WE Corner of Balsam Avenue & Sth Street Greeley, Colorado ' PROJECT Derr Gravel Pit SAMPLES TESTS g DESCRIPTION qa ?•'••g c e * I_ ;1• SILTY SAND vyith GRAVEL trace — 7 AC ran, brown, molstto wet, loose to medium dense 55 r' • Classified as Poorly Graded Gravel wIth . Silt and Sand es AC :ir = 9 AC •': 10 AC so— 11 AC 4546 12 AC WEATHERED SILTSTONE/CLAYSTONE 4545 7:_-- a nto moderate hard gawp86 .I — 43 ,A Gray, tan, moist, hard to very hard merttlttent Sandstone Lenses 'MOM OF BORING The straidnadion Itnes represent the appno4 to bounduyOnes brtwean soli and rock : iMitu, the transition may be WATER LEVEL OBSERVATIONS, ft -1 �� r racoriBORING BORING STARTED 'I'1-6.01 WL q '.L COMPLETED 11-6-Qi wt. l Y RIG ' LW -AR FOREMAN AR; APPROVED DAR JOB* 20015242 LOG OF BORING NO. B2 i i i i CLIENT Doug and Darwin Derr ARCHITECT / ENGINEER SITE-N/E Corner of Balsam Avenue & 8th Street GreeleyLColorada PROJECT - Derr Gravel Pit c� DESCRIPTION Approx. Surface Elev.: 4628.81 ft � a USCS SYMBOL I SAMPLES TES NUMBER TYPE 5 a Og t oa * 8 5 a c UNCONFINED STRENGTH, pet DiuxC air SA4 a GRAV L Tan, brown, dry to moist, loose "A 4821.3 s_ — ao 1 AC I SILT MISGRAVEL ,a s • Tan, brown, moist tom*, loose to medium dense • Classified as Well Graded Sand with ' Gravel 15 2 AC - 20 3 AC r. 4 AC — 30 5 AC _ _ 6 AC — 40 Z 7 AC SILTY CwYgy SAND trace GRAVE( Tan, brown, moist to wet, base to medium dense 4587 — — 8 AC ' . ti SILTYSAND with GRAVEL Tan, brown, moist to wet, loose to medium dense Continued Next Page 6 AC The *ratification lea represent the `approximate boundary dries between sag and rook types: kwdu, the transition ition maybe gradual. g WATER LEVEL OBSERVATIONS, ft BORING STARTED 11$41 , } WL 2 � BORING COMPLETED 11-6-01 VA. 4.err aco RIG LW AR ' FOREMAN ARS Wt" .. APPROVED ' DAR. JOB # 20015242 LOG OF BORING NO. B2 Page z of 2 II CLIENT Doug and Darwin Derr ARCHITECT/ ENGINEER SITE WE Corner of Balsam Avenue & 8th Street Greeley, Colorado PROJECT Derr Gravel Ph GRAPHIC LOG DESCRIPTION O USCS SYMBOL SAMPLES TESTS TYPE RECOVERY. in. aR DRY UNITWT P�` gt 1. 7 i.• ; ;. n ► 1,67.8 SILTY SAID with GRAVEL J ` 10- AC - " - Tan, brown, moist to wet, loose to medium _ ,dense Classified as Poorly Graded Sand with Gravel 458t 5 J SO 11 AC E 65 12 AC i5 13 AC . a wei SILTY SAND with GRAVEL PCQJIBLES Tan, brown, mom to wet, loose to medium 14 AC' 15 AC r W EATHEREQ SIOBT0M/CLAYSTONt; Gray, mo moderately hard I ' "-1 1R An rev tan, molskbard to very hard BOTTOM OF B INS IheMmtifiedlon Ines represent the pproodmste boundary tines ! between sell and rock types: kasitu, the Monahan may be gradual. WATER LEVEL OBSERVATIONS, ft BORING STARTED ; 11-6-01 WL 17. zFe 1 BORING COMPLETED 11$-11 fir acon RIG LW -AR FOREMAN ARS AWL APPROVED DAR JOB* 2OO15242_ IICLIENT Doug and Darwin Derr LOG OF BORING NO. B3 SITE WE Corner of Balsam Avenue & 8th Street Greeley, Colorado • z' DESCRIPTION SANDY LEAN CLAY trace GRA. 1�� Tan. uray, moistto wet, stiff to very stiff LTY SkNP with' GRAVEL Tan, brown, moist to wet, loose to medium dense * Classified as Poorly Graded Gravel with Sand • Classified as Well Graded Gravel with Sand Continued Next Page The etrau ee repreeentthe ate bounden, are between sod end melt tYpo* u, the tnanitian may be fended. WATER LEVEL OBSERVATIONS, ft t .01 ARCHITECT / ENGINEER PROJECT 15 20 25 30 35 40 _ 2 3 4 5 Derr Gravel Pit SMIPLES }}C AC AC AC AC AC RECOVERY, in. Q MCI Pagel oft TESTS a 2� an Zz tY 8 7, AC AC 8 AC 9 AC 1rerran BORING STARTED 11.8:01 BORING COMPLETED 11.8-01 RIG LW -AR APPROVED DAR JOS # 20015242 FOREMAN ARe` • • CUENT Doug and Darwin Derr LOG OF BORING NO. B3 SITE N/E Corner of Balsam Avenue & 8th Street Greeley, Colorado DESCRIPTION ARCHITECT / ENGINEER PROJECT . v +. r :�s SILTY SAND with GRAVEL Tan, brown, moist to wet, loose to medium dense LTY$AN4with GRAVEI„.trace Tan, brown, moist to wet, loose to medium dense * Classified as Poorly Graded Gravel with Sand * Intermittent Clay Lenses 80 Slt, Y SAND with GRAVEL and COBS LES Tan, brown, moist to wet, loose to medium dense BOTTOM OF BORING Tim Nitifloorlon Sinus rummest to spprc an . boundary► anal between soil and sods typos: Uta&u.lhbtronswon may bo gradual. WATER LEVEL OBSERVATIONS, ft WL WL g z O 55 85 7- 75 — 80 W I 10 Derr Gravel Pit SAMPLES cc a 11 AC AC z o Page 2 of 2 TESTS 12. 13 14 AC AC AC w mow Avow mow 85 ` 90 15 AC BORING STARTED 11-5+01, BORING COMPLETED 11.6-01 erracn RIG LW -AR i FOREMAN ARS APPROVED DAR JOB # 20015242' 1 I r LOG OF BORING NO. B4 Page 1 of 2 CLIENT Doug and, Darwin Derr SITE ME Corner of Balsam Avenue & 8th Street Greeley, Colorado 8 ca DESCRIPTION Approx. Surface Elev. 4631.47 ft '/1 SANDY LEAN CLAY trace GRAVEL <s Tan, gray, moist to wet, stiff to very stiff 4629 sky/ SAND With GRAVEL, Tan, brown, moist to wet, loose to medium dense ' Classified as Well Graded Sand with Silt and Gravel Intermittent Clay Lenses '' Classified as Poorly Graded Gravel with Silt and Sand • Classified as Poorly Graded Gravel with Sand Continued Next Page ARCHITECT / ENGINEER PROJECT et gmal s= 10 Derr Gravel Pit SAMPLES TESTS USCS SYMBOL z 1 AC RECOVERY, in. a C 15 J 2 3 AC AC 25 _ 30 4 5 AC AC 35 40 MON 6 AC 7 AC 45 ONO MON 8 AC 9 AC The Milan Ones represent the approximate bounden/ Ones between soil sndroolktypee: rn4ltu, the transition may be praduai. WATER LEVEL OBSERVATIONS, ft WL; WL WL 3r 1reffacan l� BORING STARTED 11-8.01 BORING COMPLETED ��-8-01 RIG LW -AR FOREMAN ARS APPROVE© DAR JOB* 2001 S242� LOG OF BORING NO. B4 Pale 2 of 2 CLIENT Doug and Darwin Derr ARCHITECT ! ENGINEER SITE NIE Corner of Balsam Avenue. & 8th Street Greeley, Colorado PROJECT Derr Gravel Pit g — x DESCRIPTION a i 7 SAMPLES TESTS a ua z A > a .v -. m aim Za o I: Al. 11 s Jrgn •' RCM !� 10 ; AC :..'::::.•:. rte:-:* ;,rte a:. :: .. R.fAND witl�•GRAVVL. trace coo S Tan, brown, moist to wet, lose to medium 55 dense Classifiedas Poorly Graded Gravel with Sand .� 60 :-/ 11 AC 12 AC = — TO 13 AC 4559Z — 14 AC .,•s.: s•": • �' ' ': •',: SILTY SAND with GRAVEL COBBLES Tan, brown, moist to wet, loose to medium — dense 75 eo-- 15 AC — e6� 18 AC ei 4644.5 — i7 An BOTTOM OF BORING The strallIkelion Ines repreeent the easmadmtla boundoi Inn between tog end rock types: hider, the won nab► be gradual WATER LEVEL OBSERVATIONS, ft BORING STARTED 11-8.01 WL BORING COMPLETED -801 11 Wt.gDf RIG LW -AR' FOREMAN ARS Wt APPROVED DAR JOB # 2001 5242 R 00 93 80 .35 SO 75 70 t55 15 so _ .145 i 40 33 30 25 20 15 10 6 U.S. BIEME OPENING IN INCHES I 4 3 31 1 112303 3 GRAIN SIZE IN MILLIMETERS 100 U.S. SIEVE NUP. ERO` I0 741G 20 30 40 50 40 I Ill I HYDROMETER` 1116111111111101 1111111111 1111 11101111111111111111111111111111111111111 immamiummasema 10 4 0.01 f 0.001 COBBLES GRAVEL COWIN I Specimen Idetanklation S. A 2 2 3 Ens SAND come medium I Classification SILT OR CLAY LL. PL M 9.0ft POORLY GRADED SAND with GRAVEL(SP) NP NP NP 39.0ft WELL -GRADED SAND with SILT(BW$M) NP NP 14.0ft 80.0ft SILTY GRAVEL with SAND(G18) NP NP NP. NP SILTY SAND with GRAVEL(1361) NP NP 24.0ft WELL -GRADED SAND with GRAVEL(SW) NP NP Specimen Idenion . D1Q0 9.0ft 39.0ft 14.0ft $0.oft 25 37.5 12,5. 24.0ft 19 ITerracon O650 5.079_ 0.955 7417 1.408 3.136 D30 1.271 0.474 0.85 0.294 1.032 D10 0.319 0.094 0.277 %Gravel 44.0 5.0 49.0 15.0 28.0 NP NP 0,86;{18.42 1.23 11.34 %Sand %Silt I %Clay 53.0 86.0 38.0 71.0 68.0 3.0 9.0 13.0 GRAIN SIZE DISTRIBUTION 14.0'. 4.0 Project: Derr Gravel Pit Slte: WE Corner of Balsam Avenue & 8th Street Greeley, Colorado Job #: 20015242 Date: 1.8.02 100 95 es 80 75 70 UAL 81E11E OPENN0IN RCHES ! U.S. SIEVE NUMBERS d 4 1 3v4 1/2�g . 3 6 6101416 20 3 40 50 HIYDTER eo t 5 ffir 40 35 30 25 20 10 k►i "iI1III II III N 1m1111117udiii:lllmmllllli■�I illll� IIII11IU1iiIUbi1IIIIIII1_1111111111 IRl1IIII! ill 111111111tnuuimiiiiii IEEE 11111111111211111111M111111111111111111111 u 1111111111111111 ui HEIL 1111111111111111111giligilSOIII 11111 11111111M s III IIIUIIIIIUiiII1►i1!UIIIIII 11!1 IIIIII� iil►� .ill 1 100 COBBLES 10 1 0.1 OFWN SCE IN MIWMETERS GRAVEL SAND Specimen Identification B1 B1 B2 B2 10.0tt 40.0f1t 55.0ftF 15.0 t 20.0ft Specimen lden*Nic on B1 400ft B1 550ft B2 15.0ft B2 200ft Classltfcatian POORLY GRADED GRAVEL with SAND(GP) POORLY GRADED GRAVEL with SAND(GP) 0.01 0001 SILT OR CLAY NP NP OORLY GRADED GRAVEL with SILTand SAND(OP-GM) NP SILTY SAND with GRAVEL(SM) WELL -GRADED SAND with GRAVEL(SW) D100 75 75 37.5 37.5 I I�rracon D60 20.42 10.41 9.5 ►.75 1,92 D30 5.993 2.202 1.85 0.428 0.629 DID 0.425 0.601 0.425 0.18 NP NP %Gravel 74.0 _"54.0 51.0 40.0 26.0 PL NP NP NP NP emend 23.0 45.0 44.0 40.0 71.0 GRAIN SIZE DISTRIBUTION PI NP NP NP NP 4.08 0.77 0.85 1.14' 48.99 17.32 10.67 %Silt ' %clay, 3.0 1.0 5A 20.0 3.0 Project: ` Derr Gravel Pit Site: NIE Corner of Balsam Avenue & 8th Street Greeley, Colorado Job #: 20015242 Date: 1-8-52 .AVY1tMY1+M...r, .s 117 100 30 85v _ 80 75 70 e5+ _ eo SEIN. OPENING INCHES I 4 4 2 1.5 1 1/23$ 3 1\V ` b t 55 150 35 30 25 _ 20 _ 15 _ 10 5 _ 0 100 COBBLES Specimen Identification U.S. !WE'VE NUNNIERS 310 1413 20 30 40 s0 a0, 100140200 I I i i I i I r 10 1 GRAIN SIZE IN MIWMETERS GRAVEL SAND Classification 0.1 Nv0R0laa1ER 0.01 0.001 SILT OR CLAY B2 55.oft 5.0ft B3 30.0ft B3' 70.0ft POORLY GRADED SAND WIth GRAVEL(SP) POORLY GRADED GRAVEL with SAND(GP) 0 5.0ft. Specimen Identification B2 51L0ft WELL -GRADED GRAVEL with SAND([ POORLY GRADED GRAVEL with SAND(GP) NP NP NP rNP WELL -GRADED SAND with SU and GRAVEL(SW-SM) D100 75. 060 13.879 030 1451 010 0.425 NP %Gravel 49.0 PL NP NP NP NP NP 96Sand 49.0 Pi NP NP NP NP 0.36 0.90 1.39 30.93 3.04 32.66 46.19 9.59 66.51 42.30 %Silt f %Clay 5.0ft 30.0ft -B3 7o.0ft 19.63 10.41 2.739 3.959 0.425 1.085 63.0 66.0 0 B4 5.0ft 100 25 ll�rracon 56.537 3.172. 38.494 0.85 0.85 0.075 67.0 33.0 33.0 33.0 14.0 57.0 2.0 4.0 GRAIN SIZE DISTRIBUTION Project Derr Gravel Pit Slte: NIE Comer of balsam Avenue & 8m Street Greeley, Colorado Job #: 20015242 Date: 1-8-02 1.0 2.0 10.0 100 95 00 es ao 73 e5 Sea a 35 30 25 20 15 10 S 1J S.ISEIIgOPEl13 INCHES I a 4 31 a 1 3M 1/234 3 U.3. SMVE NtAM RS t tee m x b eon 100 mo IpI � 1:1 1:111111 I' 1 J I) A I �t ' l II1 I III: 1111111 I 'Li Ili, lid 111111 1111111 IIIIII11I11!►1111NI111111 11111111 MINIM IIIIIIIIII 11■�IINIIII�� Ilill�l■�!�III�� 1111111111 ill��l�ii'��161p1lIIII ilflll HYDROMETER 100 COBBLES 10 1 0.1 GRAIN SIZE IN MILLIMETERS GRAVEL Specimen identification • B4 m D4, SAND COMM , Med = Classification 0.01 0.001 SILT OR CLAY LL 25.0ftP 35Aft S5.0tt OORLY GRADED GRAVEL with SILT and SAND(GP-GN1) NP POORLY GRADED GRAVEL with SAND(GP) NP POORLY GRADED GRAVEL with SAND(GP) NP Specimen Identfica5on S0 ZN B4 A Irerracon 25.0ft 35,0ft 55.0ft. D100 75 100 10.897 23.665 38.718 D30 1.214 2.244 2.963 D10 0.15 0.62 0.518 %Gravel 53.0 57.0 57.0 PL NP NP %Sand 40.0 42.0 35.0 PI .NP' NP NP 0.90 0.34 0,44 72.65 38.15 4.73 %Silt I %Clay 7.0 10 1.0 GRAIN SIZE DISTRIBUTION Project Derr Gravel P2 Site: NNE Corner of Balsam Avenue & 8th Street Greeley, Colorado Job*: 20015242 Date: 1-8-02 _ sect of 1 Borehole ft Umit LI" index Size (n n) yfi4�200 81" � Mcatbn Water (%) DiyUnit ight (P sl Saha- n Vold Raab 1 4.0 16.2 1 9.0 NP NP NP 25 in 3 SP 14.6 1 14.0 r 12.8 1 19.0 15.1 1 29.0 21.7 1 39,0 NP NP NP 251* 9 SW-SM 17.0 1 49.0 29.2 1 59.0 11.9 1 75.0 15.8 2 4.0 10.3 2 9.0 15.9 2 14.0 NP NP NP 37.5 iaey~ 13 GM 15.0 2 19.0 15.4 2 34.0 21.8 2 49.0 19.7 2 80.0 NP NP NP 12.5 w 14 SM 2 84.0 26.1 3 4.0 13.3 3 14.0 11.5 3 24.0 NP NP NP 19 " 4 SW 15.4 3 39.0 16.4 3 54.0 • 16.4 3 69.0 -70A � 14.7 3 , 5.7 3 89.0 17.8 61 10.0 NP NP NP 50 I"' 3 GP B1 40.0 NP NP ' NP 75 1" 1 GP 61 55.0 NP NP , NP 75 f' 5 GP -GM 82 15.0 NP NP , NP ` 37.5./1''' 20 SM 62 20.0 NP NP NP 37.5 /ni' 3 Syll 82 55.0 NP NP. NP 75 Of 2 SP 63 5.0 NP NP NP _ 50 s ' 4 GP B3 30.0 NP NP NP 50 t" 1 Gw 83 70.0 NP NP NP, 100 4/ ' 2 GP B4 5.0 NP NP _ NP , 25 P 10 SW-SM 84 25.0 NP . NP NP 50 2° 7 GP -GM 64 35.0 NP NP NP 75 ;' 1 GP B4 55.0 NP NP , NP. 100 5" 1 GP im re wrracon SUMMARY OF LABORATORY RESULTS Project Derr Gravel P SIte:Job N Q015242of Balsam Avenue & 6th Street Greeley, Colorado Date: 1-8-02 Subsurface Exploration Report Proposed Slurry Wall Sand & Gravel Pit Part of Sec 4, T5N, R65W, 6th P.M. Greeley, Colorado December 3, 2006 Two Rivers Testing, Inc. 1601 37th Street Evans, Colorado 80620 (970) 339-4092 °o Rivers Testing, Inc. 1601 37th Street Evans, CO 80620 (970) 339-4092 (970) 339-4762 Fax December 3, 2006 Mr, Darwin Derr Dust & Dirt Excavating 641 North 1t Avenue Greeley, CO 80631 Re: Proposed Slurry Wall Part of Sec 4, Township 5 North, Range 65 West, 6th P.M. Greeley, CO Dear Mr. Derr: We are pleased to submit this Subsurface Exploration Report for the site referenced above, as you requested. Based on our investigation of this site and the subsurface conditions encountered, it is our opinion the site is suitable for the proposed construction, providing the design criteria and recommendations set forth in this report are met. The enclosed report presents our findings of the subsurface conditions and our recommendations based upon these findings. Sincerely, TWO RIVERS TESTING, INC. Torn Cope, P.E President Cc: 2006-201 Subsurface Exploration Report Proposed Slurry Wall Part of Section 4, Township 5 North, Range 65 West, 6th P.M. Greeley, Colorado Prepared for: Dust and Dirt Excavating Project # 2006-201 Prepared By: Two Rivers Testing, Inc. 1601 37th Street Evans, Colorado 80620 (970) 339-4092 December 3, 2006 TABLE OF CONTENTS Report Scope 1 Site Location and Description 1 Site Exploration 1 Laboratory Tests and Examinations 2 Subsoil and Ground Water Conditions 2 Recommendations and Discussion 3 General Comments 4 Appendix A Test Boring Location Diagram Boring Logs Appendix B Summary of Test Results, Subsurface Exploration SCOPE This report presents the results of a subsurface exploration for a proposed sand and gravel pit east of Greeley. The investigation was performed for the owners to identify information that would assist in the installation of a slurry wall. The investigation consisted of drilling 15 test borings, inserting water monitoring wells for each boring and laboratory testing of samples obtained from these borings. Information concerning the monitoring well installation is not included in our scope of work, but was being provided by another consultant: The objectives of this study were to (1) evaluate the subsurface conditions at the site relative to the proposed slurry wall construction (2) identify groundwater and (3) identify bedrock depths. The conclusions and recommendations presented in this reportare based upon analysis of field and laboratory data SITE LOCATION AND DESCRIPTION The site is located north of East 8th Street and east of Balsam Ave in Part of Section 4, Township 5 North, Range 65 West of the Sixth Principal Meridian, Greeley, Colorado. At the time of drilling, the site consisted of native grasses and weeds with an oil battery located east of the west entrance to the site. The main location for the sand and gravel mining had been leveled. SITE EXPLORATION The geotechnical field exploration was conducted October 16-18 and October 23-25,2006 and consisted of drilling 15 test borings. The test borings are shown on the Bore Location Plan enclosed in Appendix A and include visual classifications of each soil, location of subsurface changes, and subsurface water level measurements at the time of this investigation. The locations of the test borings were determined by the client and field surveyed by the client. Table No. 1 provides a summary of the bore locations as provided by the client. The borings were advanced using a 9" exterior/6" interior dual wall percussion hammer drill pipe with continuous sampling done through a cyclone separator mounted on a Drill Systems AP 1000 drilling rig. Samples of the subsoil were. obtained to determine an index of the soils with the results listed on the Summary of Test Results noting the depth of specific soils, groundwater levels and bedrock locations for each bore. A combination of hammer and reverse circulation drilling were utilized to obtain samples. Samples for use in the laboratory were sealed in the field and preserved at natural moisture content until time of testing. TABLE NO. 1 - BORE LOCATION DATA TRT BORE # D&D BORE # NORTHING EASTING EXISTING GROUND ELEVATION (FT) ,.d TOP OF WELL ELEVATION (FT) 1 1 1400384:332 3232400.544 463333 4635.78 2 3 1400366.071 3233172.936 4631.63 4633.70 3 5 1400354.778 3233959.471 4629.83 4632,40 4 7 1400949,048 3233916.872 4630.52 , W 463323 ;' 5 8 1401305.720 3233832.300 4630,53 4632,91 6 11 1401437.642 3233152:121 4634.50 4637.06 7 13 1401410,230 3232418.749 4638.15 464065 8 14 1401071.219 3232405.372 4637.61 4640.25 9 12 1401373.829 3232778.833 4636.29 463817 10 9 1401324403 1 3233462.537 4632.63 4635.43 11 15 1400927414 3233248.678 4630.68 4633.52 12 2 1400414.170 3232770.927 4632.48 4635.05 13 4 1400403.192 3233516.356 4630.70 4633,41 14 6 1400601.020 3234300.943 4658,46 4661:07 15 10 1401826.023 3233413.749 4661.19 4663.81 * Northing, Easting, and Elevations provided by Dust & Dirt Excavating LABORATORY TESTS AND EXAMINATIONS Samples obtained from the test borings were subjected to testing and observation in the laboratory to provide a sound basis for determining the physical properties of the soils encountered. Moisture contents, percent passing # 200 sieve, and the USCS classification were determined. A summary of the test results and laboratory analysis can be found in Appendix B. SUBSOIL AND GROUND WATER CONDITIONS In summary, silty sand with gravel soils were encountered at the surface with varying levels of sand, gravel and cobble intermixed with lenses of clay. Below these soils, weathered and ' competent bedrock soils existed to the depths explored, 1) Upper Soils: Varying levels of silty sand with gravel soils exist at the surface to the bedrock encountered below. Below these soils exist varying levels of silt, sand, gravel and cobble mixed with intermittent layers of silty sandy clay. 2) Lower Soils: Below the upper soils, varying types of weathered and competent bedrock consisting of siltstone and claystone were present to the depths explored. Competent bedrock was present at depths ranging from forty-five feet (45') to greater than one hundred twenty feet (120') below existing surface. 3) Groundwater: Groundwater was encountered at depths ranging from eight feet (8') to forty feet (40'). Water levels in this area are subject to change due to seasonal variations and irrigation demands on and/or adjacent to the property. Table No. 2 summarizes the depth and elevation of the groundwater and competent bedrock. TABLE NO.2 - SUMMARY OF BORE DATA TRT BORE # EXISTING GROUND ELEVATION FT) DEPTH TO GROUND WATER (FT) ELEVATION TO GROUND WATER (FT) DEPTH TO COMPETENT BEDROCK (FT) ELEV. TO COMPETENT BEDROCK (FT) 1 4633.33 8.0 4625.3 45.5 4587.8 2 4631.63 9.0 4622.6 85.0 4546.6 3 4629.83 9.0 4620.8 86.0 4543.8 4 4630.52 11.0 4619.5 83.0 4547.5 5 4630.53 9.0 4621.5 82.0 4548.5 6 4634.50 15.0 4619.5 89.0 4545.5 7 4638.15 17.0 4621.1 77.0 4561.1 8 4637.61 13.0 4624.6 76.0 4561.6 9 4636,29 15.0 4621,3 89.0 4547.3 10 4632.63 8.5 4624.1 84.5 4548.1 11 4630.68 11.0 4619.7 86.0 4544.7 12 4632.48 17.0 4615.5 74.0 4558.5 13 , 4630.70 9.0 4621.7 85.0 4545.7 14 4658.46 40.0 4618.5 >120 >4538.5 15 4661.19 35.0 4626:2 115.0 4546,2 RECOMMENDATIONS AND DISCUSSION Based upon the results of our investigation, we conclude that from a geotechnical standpoint, the site is suitable for the proposed construction with the following limitations listed below: The slurry wall is proposed to be hammer driven with slurry injection. The slurry wall should be installed a minimum of five feet (5') into competent bedrock or until refusal occurs. Some leakage may still occur through the siltstone bedrock stratum. A Geotechnical Engineer's representative should be on site to verify competent bedrock is encountered. 3 GENERAL COMMENTS This report has been prepared to aid in the evaluation of the property and to assist the architect and/or engineer in the design of this project. In the event any changes in the design of the structures or their locations are planned, the conclusions and recommendations contained in this report will not be considered valid unless said changes are reviewed and conclusions of this report modified or approved in writing by Two Rivers Testing, Inc., the geotechnical engineer of record. The professional judgments expressed in this report meet the standard care of our profession. Every effort was made to provide comprehensive site coverage through careful locations of the test borings, while keeping the site investigation economically viable. Variations in soil and ground water conditions between test borings may be encountered during construction. In order to permit correlation between the reported subsurface conditions and the actual conditions and specifications as originally contemplated, it is recommended Two Rivers Testing, Inc. be retained to perform continuous construction review during the slurry wall installation. Two Rivers Testing, Inc. assumes no responsibility for compliance with the recommendations included in this report unless they have been retained to perform adequate on -site construction review during the course of construction. 4 � �� +�°a�` `� �+�x'�u�rr'z"�,'� xC.�xs =x.�R .�, s.� 3�r �.s.' .. r�� t t �. `� � "S r '' �� z�`� er�t``�'d � ce t m'f PS,+aY..,:y> �, > . �".t '*. '�: :. 4 c �S �Y .s .. �; ,� �y� �:s�: »`��§ �`'�r a� ₹$: 'k "'s - t . f : a s' � ,. s t e§ .tr ..dtS�y ?- 4" °� a�f �t K S� r a.„: ��f b.� �r� � "x�� . r '^�� vq � +.�re f1x�+wE^ `*', . !E '��„f y f s *�'� •�`4 r'��,/.. 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F m-x ., . � �., , � ..�. , . . . , .- . � k �# r. - a r�� _ $, .- � � a � N�' �Y .z , , . a,�� . . _ . � .. , ,. . .� , , ��. . ,. , , . , .� � k ,w x: �� f y 4 �' � ti� .. . . , , , ,. . . -, , , � . . . .: � .. . ,,. , ��.. ... , "; , . ,. , , . ,� � �. ,..: � � t �' b'. _ yf. . b � .i . �. _ . v.. . � . r ie • t. � ., . ,�.. . . r � f �� . . � . , e �. . : . . - . _," � r '1 + . . , x . . , . . , - . . . . F �� , � - �. . ' 1 A ,.. - 4� 1 . .. �- . . .. � � . "k..r . . . . . . . . . . ;.' ._. � ... .. � . .. .+.�.,'. ., TEST BORING LOCATION Di, SLURRY WALL DESIGN GREELEY, COLORADO Two. REVERS.TE...STING, ANC. EYANS, 806231 {97©) ae92 GATE PNCJ. NO: j DRAWN SY`: CHECKED 5Y: 0E/06 I --201 TMC 9P:1CI -SHEET i y -w r-= cn ( oEU —I �' ' to t3 oi ...-O s�`r+ D p :0 A r°.*. rte„ ro rn m * � 41 a i7o mr''°8:': m p Q O x' x1 r r ei m S o . L na ru N nt fir.. cn +� w i i c'3a woo u to cn x. Lom...., z td l�ei3lh fit.? '• :,,............,,,....,:,......,..;;;..„,.::::::,,i,tat##r♦ttrt __ I, x , s' r t $rts#ai#rr#t �.s '� # XI tttttt# ##tt#t#t..#t#ttttr,#t#ttt#+� �&�s ',; .n.' #1�#tats#tttt*##t#.####t riaif##f#♦ .�.: r - , Mt Sample Typo tD O too,: ,�,�. tft Ili c (BLOW ^ SIFT) Cl) - -- --- -- ---- -- -- _ - _ - ---- Water Content ar .. ti a ,� ryto m 2„,.,,. - -- --- - --_ _-- - - -- i,1 L)gtrid Limit 8 5, O » �-+ z Plastic lrndei ...h ___ ____.� _____�---_______ __ Q W 1 to rxII) c) .r ti;a.' Unconfined ro Slrengili (psi) Swell (psi) - _-___� ______ __________ __ _ ____ ______ _______ ._ _______�__-____-___--- ,_..____ uscs/MSI-fro Client: Site: LOG OF TEST BORE uat & Dirt Excavating, Sec 4 Township 5 North Range 65 Wes scription SILTY SAND 8 GRAVEL WIT COBBLE SILTY SAND WITH GRAVEL 41 - SANDY SILTY CLAY 42 CLAYSTONE (WEATHERED- BROWN/RUSTI LAYSTONE- GR ILTSTONE $GREY) I at ter Obs ation present the app iat nitiat W $' Water Checked: 10116/ Project: Project No.: O cg2of3) Slurry all Design 2006-20' C t51 tE. a". 71.. i 1 i`,4?'i boundasyJrrras between soil and rack types, Insitu, ttse transition may be oraddt T. R T. Two Rivers Testing faoting Started: gedE APpravedBy- oring Complete'. €.o 10/16120 T' r '0 .. W r w 0 C) N 0 < O -. a 0 b C1 p. i 'D 44 wa p .{ = 0 p �' U m n ct, °' w N •.a 0 OX 0 0 c°ri ci aaa zn yr m cn us w w al th al al Depth (ti.) Z 5 ..� O ss'CO a rn to 4'. C,...) nt _. O tt] A. O W 6) Sample Type al0 to -n 0 `� SPi "N U�t m X; ,� p 4' r4 (BLOWS/FT) Cl) lff __,..__�-..�_-_..-...mss_.._.., ..,.�-____. '_-. ✓-..:_ ,,. G SN WalerContent a -T) w cr —i J z .. Dry Density (Pei) G �, e -'► o < -- -- Liputd Limit cork C O -- co eat O Plastic lndex 0 ro y.__.�.: wr. ._ v O a a a° _. v t� 0 40 to % Passing #200 = tz th' b Uricocsfined ti, i. a Strength Cps eit C1 C.:.1, na ry Swell (psi) S " USCS/AASut470 LOG OF TEST BORE - 2 (Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 -North Range 65 West Project No.: 2006-201 .-� iJw^J"ra : ! • r'L' . i'ifi' rrlr�l�i i'ri YJ`R"•r .4 ANON r '%t J4 4'3.,% i R4V, x li "� t``{. s:4-. aL4•tir"1 :,,,.P1;2.4: - R i i !��,,,,44.., ��{,,,+,rr ! iii i� R ••••••••.:K; 0 kill' ..761. ! i:Zy Y i rr. tc.: - in w :00. to to 0 al� o rt+ © to , . , _ - , .0, ai . . - . : -lPe 0 ° ° , co 0 r Z 4 o to co n ad p 8 A l+ .b .h: t, t a: it ?: 8 W At. G! to -P G3 (462 W r N N w Depth (4 4 O. '= es to �r _r 49 +n t,r it • Ca u7 t .r c» 4h w n3 - CJ t[i m ,�. ..,rte' . a LPI I V 0, .YK r 'L . Y 9 r OZ Semple Type co t to -4 '#'1 sp t.at m m i (SLowsrt~r) -* N Water Contt±nl oCO 0 (%) O us* _. T • Z. Liquid Limit O ._--..r_....___..-_....r------------------..>_, _ __ .---- Pta lic Index �. CU as a . tg s % passing #2011 z ato a -- 0 --------------..__-_- _ �________________________.<______.n___---_..__-__:r.._.�___----.-__----- _ _. • R a Unconfined Strength (psf) ifi co ` co Swett (ps: .c�LI oar --------------------------- .-.�___.---- ____-__ __.__a.:------ _-_.,..._- -_____ _____ -_- _...-__.-- __-__..._,_______...___.—_. i�1 USCSIAASHTO l LOG OF TEST BORE - 2 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description 4.1A 61 u3 _ —1 fn o. .,„ ww :+ 2 4 -. r 4 os pa i ..c. Dan Q (f h ^F ..� ' .... � ..a tin... ., 'fin: -m . �n ' �.,, a •s ...w SILTY SAND'& GRAVEL WITH t rr r"r .;,.57 ,,r•,�wr� .';•l3 '1‘;‹,.:, ;ASY Vi.1 . S" 1 a 4 I 4 r ! 4 I 4 t ! l 1 4 1 I r A l I i ' 1 I 4 4: 4 4 I ! I f ' 4 t t 1 rl i l l i � 4 r r 4 4 lr 1 I 1 1 (+ 4 t i 4 1 4 1 I i i I I t I l 4 t l 1 x I COBBLE SANDY SILTY CLAY 52 SILTY SAND WITH GRAVEL 58 60( { 5C - ft 1 SILTY SAND & GRAVEL WITH C+DBBLE Bfi 7 70 71 72 78 1• The strafton ,i ltas represent the pprpxlrttate bouri ary lines between soil and rock types. Irisitu, the transition maybe ; dua Water Observations Two Rivers Testing, Inc. tit`shq S;2aker3. t/1612t3t}F, W.::- 9' Bor1n9Complete. 10Ji8/210e \Initial togged Byr, TM Water Checked: 10116/06 AAproved By: TMC LOG OF TEST BORE - 2 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft) Sampt Type SPT-N (BLOWS/FT) a o a E g 0 6 E PH x c G * C ti o 8 c v 8 S rn a to O U SILTY SAND & GRAVEL WITH 76 77 . 78 79 80 81 8 8 = 82 83 84 85 ' F 1 ss COBBLE ANDY SILTY CLAY SILTSTONE`(GREYI ; 68 1 ; J 1 F 1 86 87 88 89 90 91 92 93 9+±' 95 96 97 • 98 99 100 82 i i 1 6O ; ! 1 125 i i I i 1 F 1 F l 1 1 1 I I{ I +. I F 1 i I I I 1 1 i F I I 1 i The stratification lines represent the approximate boundary lines betweenSoii and rack types.insitu, the transition maybe gradua.. Water Observations T R T Two Rivers Testing, Inc, Boring Started: 10/16/2006 Initial WL: 9' Boring Complete: 10/16/2006 WL. 9" Logged By. TM Water Checked; I 10/16/06 Approved By: TMC LOG OF TEST BORE - 3 (Log I of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description a 1— rn o a Z'S U e a9 m v1 aim 3 ;� Dry Density (pct} o 0 y ic # Z CU t r c c cn st b c� 2 C 2 Q R a. EVI a * m cn Gs tLTY SAND WITH GRAVEL - 1 1 1 1 2 : l - �.. 5 ILTY SAND & GRAVEL WITH °xr; COBBLE Y. 1 6 8 r, r 10'� t 1 .rr 12 13 �5 i 14 fir '�ti 1 15 • 16 r �a�rl Y �•e 17 .ryr. rant GROUNDWATER 18 19 21 r It + 22 23 rC s�f 1 24 / 1 25 The stratification lines represent the approximate boundary lines between soil and rock types. Insitu, the transition may be gradual; Water Observations Boring Started. 10/1712006 Initial Wt.: 9' , T.R.T. BorBoringDompiete_ 10)17/2006 WL 9' Logged By; TM Water Checked: J 10/17/06 Two Rivers Testing, Inc_ Approved $y, TMC LOG OF TEST BORE - 3 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a G. ! *— _ •✓ C th LAY. W USCS/ HTO SILTY SAND & GRAVEL WITH 2' r COBBLE 27 • 29 32 34 36 37:c +y 40 42 may- RI a *v,,, t 1 01'' 1 I I !ir f 1 t I t t i 1 1 r , 1 I I i t I. r' 1 1 r 1 I ! 1 - I I 1 i I i I i F F i1 a I = 1 I Y SANDY SILTY CLAY SILTY SAND & GRAVEL WITH 53 COBBLEr 46 "• 47 4 Tt7e strat+rCation lines represent the approximate b0u ea nr 3inas between sraltand rock types. Insitu, the transition maybe gradual, Water Observations Boring Started: '(� 10/1712006 Initial : WI.: J` t wring Complete. 10/1712006VVL: 9' ` Logged By. TM Water Checiced: 10/17/06 Two Rivers Testing, 1rlc. Approved By: TMC LOG OF TEST BORE - 3 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description ti. I= z< --e U r = o 0 ≥ v m nc. o t- Nq SILTY SAND & GRAVEL WITH wf �^rfii x �..,. f .FC'4 min '4 ar •�{ } 1 a a 1 a , a �;, r. ; I 1 1 COBBLE 52 53 5 55 56 51 56 59 60 6 GQ 6 SILTY SAND & GRAVEL -- -- : .. ! , 66 67 68 69 7Ci i1 7 it 74 75 BS 6.3i 3.8; GW • 4 The stratification lines represent the aptzroxtnrate boundary lines between soil and rock types. Insitu, the transition may De gradual:: Water Observations T.R. Two Rivers Testing, Inc. Boring Staled. 10/17/2006 Initial WL: 9' Boring Complete' 10/1 7/2006 WI:.9'Logged By Tiv Water Checked: I loll 7/06 Approved By WC LOG OF TEST BORE - 3 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a 1=' aim 0 [iii Hi to to ,.. ;x. ...:.:.:.-. emu,... r .. v`�`-.S,�,«.0 '''+' ..=:..ae "Ii14 SILTY SAND & GRAVEL 76 77 78 79 80 81 82 SILTSTONE (WEATHERED• 83 BROWN/RUST1 84 85 8s SILTSTONE (GREY1 r { 87 88 89 90 91 92 93 94 95 96 97 98 99 100 i 687 i r 224 3 I r I I { The stratification lines represent the approximate boundary lines between soil and rock types. Insitu, the transition may be gradual. Water Observations T.R.T. Two Rivers Testing, Inc. Boring started. /0117/2006 Initial WL: 6' Boring Complete: 10117/2006 WI« 9' Logged By: Thh Water Checked: I 10117106 Approved By T LOG OF TEST BORE - 4 (Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft,) A' w rfhm o 2 EJ o -- a ii 042. a` Sin A z co O SILTY SAND WITH GRAVEL 0.. _ 2 3 4 SILTY SAND ti ti rf t t t i # t ! 6 10 SILTY SAND & GRAVEL WITH 11 COBBLE V GROUNDWATER 12 13 14 15 16 SILTY SAND 1 R, .3"" Y, rr. ,r.r,? x1 f r� s ! ! , , 0 , r 18 131 SILTY SAND & GRAVEL WITH OBBLE 20 21 i 22 23 24 25 10- he stratification lines represent the approximate boundary lines between soil and rock types.`nsitu, the transition may be gradual. Water Observations r1-1.1.17. Two Rivers Testing, Inc. Boring Started: 1011712006 Initial WL: 11' Baring Complete: 1 0/1 712006 WL: 11, Logged By TNt Water Checked: 1 10/17106 Approved By. TMC LOG OF TEST BORE - 4 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township S North Range 65 West Project No: 2006-201 Description 0 0 �m Water Content (%) o a� 0 n SILTY SAND & GRAVEL WITH 26 - -b 4 I • i Y ; } t t I r Y t I Y f t 1 A toe COBBLE 27 29 32 sILTY SAND WITH GRAVEL BS I 16.7; $ I I 3.18: ISP 1 t. SILTY SAND & GRAVEL WITH ; I I t tic �pL - I . _ i I $ I i ` • • _kl* • $ I a Y ` t. s - - I a t t i l t t • l f Y� I • i t f 1 •tee I t i i ! . t i I I t I f I . ! , , ,.. 1 I 1 t . 1 1 , f t I $ I I 1 i t t I.. t1. i I i $ t / $ • ' $ ), I $ ; , ' i I `I 1. Y 1 t I I •/ I 1 • •I I • I I I I • t• ii I # 1 t• I i $. •• • I 1. t 1 L• 1 i 1 $ i I COBBLE etV J 43I SANDY SILTY CLAY -0 S; SILTY SAND & GRAVEL WITH COBBLE 45 47 = 4 stratification lines represent the approximate Zoondary lines tsetween soil and rpck types. Ins u, the transition may be gradual Water Observations Two T T 4 R Rivers Testing, Inc. Bering started: ter, /20c6 Initial WL: 11Y Boring Complete. 10117/2006 WL: { 1' Lagged 8y; Tjvt Water Checked: I 10/17/06 Approved.. By; TMC LOG OF TEST BORE- 4 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site` Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description r co 2 `r°s EIS 2� O a — U $, 2 °$ m in a a E w Plastic index o 0 R ae cs c .. _ u) a 0 1 co m SILTY SAND & GRAVEL IT . 51 .. .. Kr„�' N .• '‘.... rr - A� _ - :3 = 1 1 I { r i 1 II 4 i r R 1 Illiii I COBBLE 52 53 54 SANDY SILTY CLAY SILTY SAND & GRAVEL WIT 55 COBBLE 56 57_ 58 59 so 61 62 63G SILTY SAND & GRAVEL 65 66 67 SANDY SILTY CLAYwain SILTY SAND GRAVEL 68 69 SILTY SAND & GRAVEL WITH COBBLE 70 71 72 'tx 73 74 75 rihe stratification lines represer+t the approximate boundary lines between suit and rock types. •Irrsitu, the transition may be gradual: Water Observations T "1�' 1T Two Rivers Testing, ' Inc. , Boring Started: 10117/2006 Initial WL: 11' Boring Complete: 10/17/2006 WL 11' L ea B : T Water Checked. 10/17/06 Approved By TIC a LOG OF TEST BORE - 4 (Log 4 of 4) Client: Dust & Dirt Excavating r Project: _ Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description L d 0 - Sample Type tL if) �a 1-.0 D. J o) v C W ° U Q �` a a D O' :3 X bC U �. a Of• C 2.. a U C L O V © a U) G to CI. to • o UJ :tn .to D { ' .. SILTY SAND & GRAVEL WITH 76 ..�.+�t_.. • '�:"'--��' :,ear_, _'i :`..iT '�:,r . . -.. a,sr' �_ +i-i�!=�"" r;rr k s.:u: '�'�'''+'9 ; 1 ! I I COBBLE SAND & GRAVEL 78 SILTSTONE (WEATHERED- 79 BROWN/RUST) 80 81 - 82 SILTSTONEjGREY) 83 84 85 86 87 88 i 89 ` so 91 92 93 94 .i 95 - 96 97 98 99 :. 100 - I 86 i i 1 p j 1 122 i • i I ` t 60 i i l t t l ; 31-6"1 l ; a• 1 i A ! i 1 t i i 1 E 1 1 The stratification lines represent the approximate boundary Ones between soil and rock types. Insitu. the transition may be gradual„ Water Observations T. R. T . Two Rivers Testing, Inc. Boring Started: 10/17/2006 Initial WL: 11' Boring Complete: 10/17/2006 WL: 11' Logged By: TM Water Checked: j 10117106 Approved By TMC Client• .; LOG OF TEST BORE - 5 (Lo+ Dust'& Dirt Excavatin Sec 4, Township 5 North Range 65 West GROUNDWATER T s{reti on lines represent the Water Ob Initial WL ions pater Checked, I 10/251 Pl Boric imate born 9' Project: Project No.: between soil T.R.T. y Two Rivers Testing, Inc. of 4) Slurry Wall Design 2006.201 Inv the ion naa dual. ompiete Logged By, Approved By T 10/2 6 TM /20 Dust;& Dirt Excavatin *' Sec 4 Township 5 North Range 65 West SILTY SAND & GRAVEL WITH StTY SAND & GRAVEL WITH Project. Slur Wall Design Project No.: 2006-201 The strificaI rt Iirms r€ present the dppto cimate boundarya nes bet eert nd rock types. tnsttu, the;transttiort may de gradua Water Observation fort • Started. inifiai Wt.! 9' Wt. gw .T Water Checked: 10!25106 Two Rivers Testing, Inc Boring Complete' LOG OF TEST BORE - 5 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) 4 r1} u Z > tgll ea a o • o a [4 x a c _ T. to rn y ca, gQ C a v Qg _ SILTY SAND & GRAVEL wiTFi 51 a I f r i { 1 r i , 1 u t "r 1 , COBBLE 52 53 54 55 56 57 58'- 60 6 62 63 64 65 66 67- 6a'• 69 SANDY SILTY CLAY 70 71 72 SILTY SANDY & GRAVEL WITH COBBLE 73 74 75 The strata6 ation lines represent the approximate boundary Ines between soil and rock types. Insitu, the transition may to gradual. Water Observations Two Rivers r-� 1 Testing, inc. , Boring Started 10125/2006 Initial WL: 9' Boring Complete: 10 5/2006 WL ' 9' logged By, TM Water Checked: ( 10/26/06 Approved By PAC e N rn CO LOG OF TEST BORE - 6 (Log 1 of 4) Client. Dust & Dirt Excavating Site: Sec 4 Township 5 North Range 65 Wes ILTY SAND SILTY SAND & GRAVEL WITH COBBLE GROUNDWATER V SILTY SAND & GRAVEL WITH COBBLE SILTY; SAND & GRAVEL SILTY SAND & GRAVEL WITH 6 8 9 10. 11 12 3 14 15 16 17 18 19 20 21 22 23 2 25 The stratification tines represent the approximate boundary I Water Observations initial WL WL: Water Checked j 10/24/06 15' 15 Slurry Wall Design 2006-201 E R x C 0 cv a C C C) C `) D Project: Project No.: nes between'soi and rock types. tnsitu, the transitionmay be gradua T.R.T. Two Rivers Testing, inc. Borina Started 10/24/2006 Boring Complete:: 0/2412006 ogged By: Approver! By: TMC LOG OF TEST BORE - 6 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description' r Semple Type 1>` on o J c " COt E a vCsi S' c til ta C. ,s U v U x 1 V 261': SILTY SAND & GRAVEL WITH ; COBBLE • 27 r. ':`r�°,< rs , 1 30 °. 31 32 S. 33 34 35 {p . a, 36 SILTY SAND & GRAVEL 37 .....:`: . 38 SILTY SAND & GRAVEL WITH COBBLEa 1 42 rr r� s 43r * . rrR k`M 1 1 44 ' 1 1 1 45 1 , 46 •r " 1 47 •rrx f 1 1 48 49 rrr r 1 S 50 r , f 1 rr� i 1 e 1 I r rr i e: 1:. 1 The stratification tines represent the approximate boundary ones between soil and rock typeslnsitu, the transition may be gradual. Water Observations Boring Started: 10/24/2006 Initial WL: 15 m Boring Complete: ' 10/24/2006 WL: 15`: Longed By: TM Water Checked: 1 1()24/06 Two Rivers Testing. Inc. _Approved By; TMC LOG OF TEST BORE- 6 (Log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site. Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description - _ Depth (ft 1 a .. pki z 0 is N Cl SILTY SAND & GRAVEL WITH} 1 1 f i t t t A CC31w4BLE £� SILTY SAN0 & GRAVEL y i R 1' i i i i 1 1 f : I f 1 1 a 5l 5? 58 59 SANDY SILTY CLAY £0 SILTY SAND & GRAVEL WITH • 1 1 1 ` f t 1 ) f ! f f ' 8 COBBLE 61 62 - V1 SILTY SAND 68 tit 1 I ` f - SILTY SAN0 & GRAVEL WITH x '.4 f I t F�iA�YT `Atd ..�.; It i 1 i i 1 , f A 1 - i f 1 f �: 1 ; i t ;1 I f, '; I '. t t t i I J1 1- >l GD$BLE 70 SAP DY SILTY CLAY 71 SILTY SAND & GRAVEL WITH COBBLE 73 74 The slraftfcation Iires represent the approxarlate boundary- tries between sail and rock types. Insllu, the transition ay be gradua .' Water Observations Two Rivers Testing, Inc. crimng Started: 111124/2008 initial WIw. 15 BOn Complete. 10124/2005 OIL: ' 15` Lbgpea By., TM titer Ch ked 1, 0/24106 prcaved By TIC LOG OF TEST BORE • 6 (Log 4 of 4) Client: Dust& Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 6 North Range 66 West Project No.: 2006-201 Description O Sample Type SPT-N (81.OWS/FT}' 0 u -at. c 61 E J R C Q 0 r v u1. z- n USCS/AASHTO SILTY SAND & GRAVEL WITH 76 * i�. it ti! X 1 4 I I i b I I 1 i I i I 1 ( 1 1 , COS LE 78 t 80 3 Sai>'? 8 I &LI ° E THEREo- g SR iWNFRUST} SILTSTONE'(GREY t $9 BS 20.E 92 J3 g Sa" 96 99 10 88 -7,i /'�1 89 > I I I I 6 L! 1 4 I I I I I 4 1 I 4 4 I I I I I I I I I t I 1 1 I I 1 t I , I I 1 i 1 4 I I I I 1 I 4 I' I 4 I t I LThe 5tratigcatian lines represent the apprs,Iri `ate boundary fines between soil an itu, ₹he transition may be gradual. Water Observations � �T3oring utarte /24/2006 Initial VV L_ 1 . . Baring Complete' 0124/2006 Wt.' 15' Logged Byy TM Water Checked: i 10124/0 Two Rivers Testing, Inc. Approved Sy: T LOG OF TEST BORE - 7 (Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) Sample Type i 2 to m Water Content (%) c a 4,1 Z t] Q J x, A n Q Q0. 0.1 c a • e ii # t22- D u c' 4 vi 8 2 3 4 5 6 $ 10 12 13 14 15 • 16 17 18 19 20 21 22 23 24 25 SILTY SAND WITH GRAVEL _ r' - '� t i i r 1 1 r , r 1 i t 1 � 1 t t 1 1 1 a 1 r , t t 1 t t t t 1 1 ; 1 w j ; , 1. I SILTY SAND & GRAVEL WITH COBBLE SANDY SILTY CLAY SILTY SAND & GRAVEL WITH COBBLE Groundwater The stratification lines represent the approximate boundary tines between soil and rock types: Insitu, the transition may be gradual Water Observations T.R. T. Two Rivers Testing, Inc_ Boring Started: 1012412006 initial WL 17' Boring Complete: 10/24/20O6 WL: 17' Logged By TM Water Checked: I 10124/06 Approved By TMC LOG OF TEST BORE - 7 (Lag 2 of 4 Client: Dust & Dirt Excavating : Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Is at N Unconfined Strength (psi) a SILTY SAND & GRAVEL WITH COBBLE 2 .re''''' ? x SILTY SAND & GRA as { 2 30 r 1 T T , SANDY IL SILTY CLAY 32 SILTY SAND & GRAVEL WITH COBBLE . if molt d. �. f ,� � • 1 i 1 { t f AE} 1 A 1 T 41 � 42 44 5 447 SANDY SILTY CLAY 46 SILTY SAND & GRAVEL WITH 4f} r `"4 COBBLE 49 50 w 1 1 { The strah catlon lines represent the approximate boundafr lines between soil and roC1e types. lns tu. the transition may be gradua Water Observations Baring Slatted: 1O/2412O05 Initial WL:j ` i?" •X71'1 . J. . Boring CorPIe#e; 10/24/2008 WL I,. 47" Logged 8y. 1'At/ Water Checked: 3 4 0/24106 Two Rivers Testing, Inc. Approved By: TMC LOG OF TEST BORE - 7 (log 3 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006.201 Description rs Sample .Type w 4LO U C N a m _ o a. Unconfined Sltengih (psi) Swell ipso USCS! MSFITU' 5r - ,�,% T'Ss I 7 1 ( 1 I f 1 6 f % 1 1 ! $ I I S % 1 1 x ! L I i 1 i I I 9 I 1 4 s t 1 l 1 f 1 1 I 1 j ; 1 I 1 ! I t I 1 N I I J % SILY.SAND& GRAVED WITH 51 COBBLE SANOY SILTY CLAY Sg SILKY SAND & GRAVEi. WITH COBBLE �+,�y � 4191 61 62 ISAIVDY SILTY CLAY 4 Ui SILTY SAND & GRAVEL -WITH COBBLE 68 72 7 1 75 The traliflcation lines represent the approximate bavies-between soil and rack types, Insitu, theta I a maybe gradual Water Observations Two Rivers 'Bating Testing, Inc. 5tarlet ire/24/2006 Initi i WL 171 Boring Complete: 1g/24/2006 WL: 17' Logged By: TM Water Checked. � 10/24/06 Approvea By; Trr C LOG OF TEST BORE - 7 (Log 4 of 4) Client. oust ;& Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township $ North Range 65 West Project No.: 2006-201 Description Depth (tt ) 'pi-e 0 .. Dry Density (pcf) _ — R $' 0c stn 0) v M 26 > SILTSTONE/CLAYSTONE i 8 jM i i i ! 8 8 (WEATHERED-BROINN) SILTSTONEICLAYSTONE (GREY}, , 63 x I I '' BS ' 18.0 , 3 333 ; 161 86.93 �` CLtA 6 ' 104 i i i r : r. (-: ;: 80 82t 4r Ss 90 91 92 S9 95 96. 97 99 /� 10t) 1 i I t ! I I , r I I I I i + t r i i i r r Y a , r � I I r I ; 1 I i i r i 1 r l 1 I 1 I I I y 1 , r I The Stratification lines represent the approximate boundary lines between soil and rock types. lnsia, the transition may be gradual: Water Observations T Two Rivers � � Testing. ` Inc. Boring Started: 10/24/2006 Initial ‘AIL: 17' Boring Complete- 10124/2006 WL 17' Logged 8y TM Water Checked: 10/24/06y Approved By- TMC LOG OF TEST BORE - 8 Lo. 1 of 4) Client: Dust & Dirt Excavatin • Project: Slurry Wall Desi • n Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description N a O >R irl ..p c g xvx HN G a. C 'r.) a Ca U) r ` SILTY SAND WITH GRAVEL i I r I 1 • YYi SLTTY 9 • 5� �4:ss I AN 9 10 11 .4ti; 1 t • 7 ;''' `•r' , x•x�+ a ,_r s rye: . ,,� r + i a 1LTYSAND &GR•VELWITH CO: BLE 12 Groundwater ] 13'S 14 15 16 18 19 20 21Jr 22`� 23 24 25 SANDY SILTY CLAY The stratification lines represent the approximate boundary lines between soil and rock types, Insitu, the transition may oe gradual. Water Observations '(� 1 T • I1 Two Rivers`Testin., Inc_ Boring Started: '10123120066 13' Boring Compete. 1iJ12312DQ6 t1��■I�� ■�� 13' Logged By: TM Water Checked: 10/23/06 Approved;By. 1 n4C N. LOG OF TEST BORE ;- 8 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Scurry Wall Design Site: Sec ,4 Township 5 North Range 65 West Project No,: 2006-201 Description Depth (ft) y Z t....1 y c, 0 4. ca ^" ul G z c N 9# c N Q 1 W oa In o to �t o *Y .v �., ..,. v"S_ `, w"�.'vmf'.^,+; '�"_*r^:A2 ,tee.. F. ��" � . rt r .p .,z ,� r•.Mpv ..,.X r4-. SANDY SILTY CLAY ' �r: C `sr . '.0.- K w + 1 1 1 1 i i 1 r r 1 1 i 1 1 1 1 1 1 1 28 SILTY SAND & GRAVEL WITH COBBLE 29 ." 30 Y SILTY CLAY SILTY SAND & GRAVEL WITH •. Y ■ A r *C,ee r'xi 1 w elrPF^ 1 .4 ,- st r� ry- r 1 1 a N I: I, s r r 1 r 1 t 1 r 1 1 r t 1 r 1 1 l 1 1 1 1 r 1 i 1 1 1 1 1 + t- ` 1 Y 1 i 1 3 1 1 1 1 l COBBLE 3a 40 42 4y 1 44�,�` as SIG fit 49 SANDY SILTY CLAY The strati₹icatinn lines represent the app; oxim`ate boundary line between soil and rock types. Insi#u, the transition may be gradua . Water Observations oring 51 tied: 10/2S/20€i6 ,I fitiSl WL: 13" T Boring Complete: ' 10/2312008 WL 13" Legged By TM Water Checked: 10123/06 Two Rivets Testing, Inc.Approved $y. TMc LOG OF TEST BORE- 8 (Log 3 of 4) Client; Dust & Dirt Excavating Project: Slurry Wall Design Site; Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (ft.) Sample Type SPT.N (8LOWSI T) Water Content C1 NA 0- g e 5 !!F i13 2 57 SILTY SIIf+It & GRAVEL WITH i i i 1 i i i i i i i 1 i I i111.. ii s i i 1 COBBLE SILTY SAND'& GRAVEIz SANDY SILTY.CLAY BS 31.0 ; 39 l 21 197.5 I i 20 ' CUA-S StL TY SAND 3 7 l 1— 1 1 1 ( 1 ! 1 1 i i r i i 1 i 1 i i 1 1 - 1 ! 1 1. i. is 1. �... a I 1 1 1 5 70 7G 74 7 II t Fi •l ,r.F.71 ' •"k i t SILTY SAND '$ GRAVEL WITH CDEt' l3LE SANDY SILTY CLAY, SILTYSAND & GRAVEL WITH` COBBLE The skratlfI alloy line represen the approximate boundaryfii a ens soil and rock'types. Insistu, the 1r gitrar may be grad4ial. Weter Obse rations Two Rivers R rr Testing, Inc. orIng Started_ 10/2 31201 `Indtial WL: 13'T Btring Ookrtpteke: 11231?_DQ WL: 13' Logged By'. TM Water Checked: 1 10f23106 '' Approved By' FMC LOG OF TEST BORE - 8 (Log 4 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range. 65 West Project No.: 2006-201 Description Depth (ft.) Sample Type SPT-N (BLOWS/FT) 0 o o a N C 2"O. J: cr x q C -� o o, C N p a s L L 2 e c-. 56 to. j r/QQ Q 0 SILTY SAND $ GRAVEL WITH ?6 1 i { { , 1 r p 1 r , r Y C0BBLE SILTSTONE (GREY1 77 78 79 80 81 82 85 86 87 88 89 90 91 92 93 94 95 96- 97 98 99 100 159 1 1 94 148 9Q 90 { 125 1 1 , , The stratification lines represent the approximate boundary lines between soil and rock types. In du, the transition may be gradual Water Observations Two T . Rivers Testing, T Inc. Boring Started: 10/23/2006 Initial WL: 13 Boring Complete; 10123/2006 WL: 13' Logged By: TM Water Checked: 10/23/08 Approved By, Tn+MC LOG OF TEST BORE - 9 (Log I of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Sitew SeC 4 Township 5 North Range 65 West Project No.: 2006-201 Description >= ;, a c rn 1JSCS/AAS1-ITO SILTY SAND WITH GRAVEL 1 ) r 1 s ± 1 i I 1 1 T 11t / I 1 1 I 1 1 SILTY SAND & GRAVEL WITH Fl�t3 N14 \•t - - •: � • Yip B 1, II i I I.. I I l _ 1 t 1e i' I I 1 1.: I. j I r ; i t I � 1 COBBLE SIL1 Y SAND SANDY SILTY CLAY 12 SILTY" SAND & GRAVEL WITH CO LE 15 GROUNDWATER Q pis i 20 21 ryryy y 24 4 4,� i.: ANDY SILTY CLAY.. SILTY SAND & GRAVEL WITH °25 GABBLE , he stretiiieattnn lines represent the 13frpro dmate bounen s 31 and ro types. lnsatu, the trans9tit n maybe cgradua Water Observations ' TWO Rivers 1 R. Testing, . Inc: Boring ed= Stal w 10/24f200s Initial V11Ir� i ' Boringon Complete: 1 2,41200 0 e By: TM Wafer Checked: /0124106 App'rovari ey, TMC g d r0 F. or - t m CD as-af' t7 cam Q r- al m to N m '� i.. 4 CI) O r D' _ z D tr1 D. w to a a a a i et I'Da Qo `° ...] m { flt 7D61 • O —I r n to 111 o . -`�3 N rn "' cp - z x • x "t2 CD 0 ay 01 x,0 al cn 11 a a a .0. .2. A. A is . TA w tv GY CO to w w w to N TV N r.� Depth (ft,) p 3 a a as .i a cn .a. toa, u, p a to a '�J A .W N O t0 m . Qt O"All:. 4 ; , ^YK `:e l e 'S. 1,,e-4' ,?fit• 1. '• ' r.- y .,0. , } ...- -5. l t , �. Y, �.' 91 Mct 0 12 0 4 0 r Sample Type 0 O --i _71 —1 O m , SPT-N g m }„-1 - (BLOWS/FT) J -- m y; Water Conleni m �' tai) fp rD. 0 C 5 O Id rn to Dry Density (pet) rA e=i en I Liquid Limi1 n O c to ti, d Plastic Index - .44 ii Jug` to. ai _-- -- tD ,„ vvota 3 r,; ra, %oPassing2000 .55:5 UH!�• vo Ft_ t Unconfined _______� Strength (psf) Swell (psf) TO m a USES/AASFITO 1 41 reom. LOG OF TEST BORE 3 (Log 3 `of 4) Client: Dust * Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description } Ca m E�3 ^ Sa tIJ r Y g e. ri _c isi a. a # CyL +c ..- . / *.! �y .l ti y 7,=.77.=:„--1.:7=---- , . Xa.v =-,4,. M`y w._r.'$;v_r-.'fwu: +6`mlb'"x`!M' ...m � L+t+a _ . j .a ``�Eaa� a ...... M e .4. R ,. .. .. , . . `� u.. R4.. t v.>r �S "t".^`:..e. a cs.+.z.x t SILT N D +' GRAVEL IT h«` yF • rf" . � 4. ::. j r # t L � 1 ( / 4 ! R X. t 4 4 )4 4> 1: 1 r 1 t ! { r: { t r t t 1 1 f t { 4 4 4 4 C0H 8BLE :::1II. 55 5455 57 . SANDY SILTY CLAY SILTY SAND & GRAVEL 64 1 65 SILTY SANDY CLAY 66 SILTY .SANO x" ►�„ a t 1` l 4 { r 9 4 4 1 4 o r i 4 1 4 { 1 4 Y / 4 SILTY SAND 8 GRAVEL WITH CO68LE 76 71 +g 7J SILTY AND 8 GRAVEL 74 SILTY SAND'& GRAVEL WITH 5 E' 1 ` 4 4 4 4 4 L COBBLE The stratification lines represeapproximate boundary ilnes between soil and rock types. nsitu, the transition stay be gratlua .. Water Observations . . Two Rivers Testing, Inc - Jr; Started- 0/24)2006 initial WL 15' f rring Comptete; 1012412006 L. 15f L0ggerr W ier Checked:1 10/24106 Approved By: IMC LOG OF TEST BORE - 9 ( ag 4 of 4) Client: : Dust & Dirt Excavating Project: Slurry Wall Design cite. Sec 4 Township 5 North Range 65 West Project No.: 2006.-201 Description a y a a. c ° .1 to a C ? c f� T .r C 0 a E J nrt 7 - 74 sta?. a a '�'„ ro !.7 v ern USCS/AASHTO • SILL' SAND &`GRAVEL WITH 76 COBBLE :?`` r 1 i 1 ! r ! r t T f SA ► D ' SILTY CLAY8 ' t t 4. SILTY SAND & GRAVEL WITH 79 COBBLE 8t7 82-.. 85 ,.- .z 1 ,i f ! I 4 1 74 SILTSTONE-WEATHERED= BROWNIRUST) 87 SILTSTONE-fGREYI " fi9 i x. 4 90 [y 91 -.. v 7 r /.5 - 1 --rd 3- 122 t 4 _ 1 (� 1 96 97 98 r 100 1 1 ! t 4 I f t i 1 I 1 1 1 1 I I ! 1 f 1 1 ; I f 1 ,. 6 1 4 499 I I 1 4 4 5 I 1 6 I I I 1 4 4 4 I I $ 4 4 4 4 I ! ! !. I T ! 1' 1 ! I i l 1 The etratiticatsrin liner represent the approximate boundary lines between soil and rods types. Inlionthe trar Tray be gradual. Water ObssrvationS Two Rivers Testg Inc. Bolin; Started: 0/2 initial WL 131 Boring Complete: 10/23/2006 Wi.:3rrs Lagged By: Ttvl Water Checked: [ 10123/06 roved By: TC n rn 9 ,. Cl N� tR 0 to . Cl) „ii......., 1.d r - , : z.. 'Z} my„ x. I4,1 co Kn ''4 : fl 0 0 .-1 0 c Z C7 M -1 Zm R� '� p� y tq Q ,. Cr cr r cI L,ry;C rii r r 3s'ClO C7 CZ 0 =1 - i as . 4' KN.s K3 ''`r Q 00 oa • =a 0) 4, s N o 0 0) -d. cue th as Kri ra _„ 0 f31#pih (#t } A. 0, 4 :; 's ue.'; k ,, *, r S,X � + ' ; ` �, .,, +f.? :. .1 et rte. us Sample Type we rn .1.1 5* 'ini oII' SPT.N R1 -,ttr a to Water Content •4 d Q -i sn---- 0 n O m u� .; Dry Dactstty (pct} 4 ' 3 -cx , A.. Liquid t.amit oii i" +w o Plastic Index 0 CD . , • ___ ____-_.___.�_._______.�_._. ______ _ ___sue------- -------r=____., -• U) '9". .� tc 'aa % Passing #2{10 .c m _ m ., 7. t lrtcangnt Strength (psf), C Sum#f (pst} c� 1 m KA t SCS/AASH• LOG OF TEST BORE •10(Log 2of4) Client: bust & Dirt Excavating Project: Slurry Wall Design Site: Spec 4 Township 5 North Range 65 West Project No: 2008.201 Description Cl2 SPT N (aLows rT) Water Go ilenl C) ts V0 xrg 0 SAND &.GRAVEL WITH CO8BL /,/nk w 2 � ! y� rd' • +++�� Z r I i I - F 1 i 1 l 1111-.. i I I Y 1 } I I I f I 1 ; I • I � 1 1 f is 1 1 I I I 1 Ai I } l i i 1 1 ( � I } I 1 1 r f i I I I l I i I 3 f I I 27• 29 0 .31 .. 33 ISANDY SILTY CLAY 38 Jt�. SILTY SAND & GRAVEL. WITN yp ryyqp coBBLtc 42 44 45, 46 47 'x��"'' TMe stratification in pr en appro tmate boundary line s^ between soil and rock types, 7rtsitu,.the tr sttitlr may be gradual Water Observations 4 Baring Storied: 0/25/2006 II1iti I Wl.; 8.a' Boring Complete: 10/25/,2006 Wl.: 8.S' Loggol# Eby: TM Water Checked: [ 10/25/060 Two Rivers Testing, Inc. Approved By 3i�AC LOG OF TEST BORE -1O (Log 3 of 4); Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township s North Range 66 West Project No.: 2006-201 Description; I e ,.,.. s CT's. .. ... "^.s+,�^,• .,., .:..... w ...- . >..^ w, �.�a'rt �.'«-• ,�c'�y..��y. r�"a :. ^�.�. :- t., *y. .f.,'�`5"",*."..�.'unr.'T SILTY SAND & GRAVEL WITH : 4'05 1 1 1 f 1 I t f A COBBLE rJ It 56 67 5s tr `•fir { r. 1' "'.• mfr BF•"%PF'. 4�a•k: 1.. 1. 1 } t f 1 1 c w_ , } A 1 1 /' 1. a i i l t 1 f t I 1 1. 1 1 1 1 i 1 P t t f- t I 1 1 1 1 I 1 1 1 .. 1 1 1 1.. Y i f. 1 1 1 1 1 1 1 1 1 i 1 t 1 1 SANDY SILTY CLAY SILTY SAND G3 6 Y - Vf: t� 71 2 ?3r ?5 Thestratiiicat Qn lines represent the, approximate boundary lines between soil' and reck types. Insttu, the re iii may be, gradual Water Observations stein g Started, 101251200& Initial VVL., 8.5. T R T Boring Complete` 10/25, 005 W(.W' $.5` Logged BY: TM Water Otieclked: I 14/25/06 Two Rivers Testing, Inc. Apprpve0 6y: TMC LOG OFTEST SORE -10(Log4of4) Client: Dust & Dirt Excavating Project: Slurry Walt Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description .C Sample Type SPT-N (SLOWS/FT) 0,° 61 0D Q ii s� a.w..» aYca.:,sn7,a',zvhu SILTY SANG Y ��• R'C`ttiV f I 1 I I f 1 I.. c l 1 1 I 1, 1 1 1, I 77 78 79 $d TSTOJ SILNE1WEATHEF ED• BROWNIRUSTI 8 83 I M i 14 i SILT TONE (GREY) 85 8t3 67 88 t a2 ; ;, , I i i r 75 4 l , I 90 - ... _ 92 r 94 95 n 99 10 , I C t 1 II I F I t i 1 t I 1 1 I _ , I I i I. a I' 1 1 i 1 / T e $tretif cSti in hepresent the approximate boerr ry Iines between soil?.end rock types. fnsitu, the transition' may be ;?1adt Water ObservationS Bar.""rtgStazteti- '10125/2006 Initial WL: 5,5* T R 11 Boring Complete, ¶0/25/2006 VIAL; 8,5i Logged By: TTvI ,Water checked: I '10/25/06 Two Rivers Testing, Inc. Approve By. T AC LOG OF TEST BORE -11 (Log 1 of 4) Client: Dust 8 Dirt Excavating Pro'ect: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No,: 2006-201 Description o Semple Type Z S. %.. c U i471 ii C t» ice. y v Lt a. a 'o u SIIII1TH6vELr p f- car *;r' . o I « 1 f i I i 1 1 / I i f i ! 1 1 1 « ; « A 7: i 1 r i 1 SILTY SAND & GRAVEL WITH S� O CBBLE GROUNDWATER 51 15 15 GRAVEL WITH COBBLE 22 2.24 2 The stratification lines represent. the approximate boundary toms between soil and rock types...1 ' ux the transition, may be gradua , Water Observations BoringStarted° 10/16121106 lnitiat V‘11.: i 1 Boring Completea 10/16/2000 Wt.:11 Logged 5v Tm Water Checked: 10/16106 Two Rivers Testing, Inc. Approved By: TMO LOG OF TEST BORE -11 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description y `i^' ti aY 03 CO r -yy Z 7 0 0 i..) 3 V78 t:L >; c a E - CT z g c c gl # c .N - a s c" �. = C 3 8, y' O. USCSAASH10 kr {{ K> - _ 1 t ! { i Y 1 1 1 , , r 1 �... q 1 1 1 , t Y GRAVEL WITH COBBLE 26 27 28 2$ 30 ' 31 32 33 34 35 36 SILTY SAND & GRAVEL WITH 37COBBLE 38 39 40 41 42 43 • 44 45 46 I SANDY SILTY CLAY SILTY SAND & GRAVEL ag 49 50 The stratification lines represent the approximate boundary lines between soil and rock types. lnsitu, the transition may be gradual. Water Observations T Two Rivers Testini Inc. , . Boring :Staved: 10/17/2006 Initi9l WL: 11` Boring Complete: 10/17/2006 WL: 11r Logged By: TM Water Checked: I 10/17/06 Approved By: TMC LOG OF TEST BORE- I I ;(Log 3 of 4) Client' Dust & Dirt Excavating Project: Slurry Wall Design Site. Sec 4 Township 5 North Range 65 West Project No. 2006-2Q7 Description Depth (ft)` Cy cn ... 3 a J fJ t1 0 - fit! C D7 m.vi SILTY SAND , = '7 € 54 60 62 63 es'' 70 71 'ff -S 4 +s 1 11 P , — L & GRAVE52 . s art # z.y �> f t t l f t t I 1 3 I l I A y 1 t l 1 1 f t s j j f R 1 l yryI 1 t:. Y P t t r S I l f j(t 1 , t 1 1 t 1 SANDY SILTY CLAY SILTY SAND SANDY SILTY CLAY The strattftcation fines represent the approximate boundary ties between soil and / foci types. I utne,transit' on may be g. ua , �1Vater'CI ervatiors Two Rivers Testing, Inc; ring Started. l0 712tios Initial \A/ 11 Boring GorrmPlete. 1011'7120 ie WL. 1' Logged By- TM. Water Checked: 10 17/ A#proved By.. Th10: LOG OF TEST BORE -11 (Log4of4) Client; Dust 8. Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No,: 2006-200. scription 0 o to 'SPT-N {LLawster) Water Content c 0 J c < a. % Passing #200 Unconfined Strength (psi) b Z Y �fi�`A"'?^-.s�`"e" ..�..,... F; �� SILTY SAND virmimar 7S d^+�4 q,="ro ,d,b..,�..1,. '�F w.s"'.:`;. v „'•.>..,�.�. .,. O t iv ,.....7., l"yxP /��f ''/f/// 4 A. 1 5 ; . ! l t t 3 l l 1 t f t ! y M t l SILTY & GRAVEL WITH COSSLE .' 7? 3 78 62 _ 94D SILTSTONEJCLAYSTONE- (WEEATHERECa- SRO WN/RUST 1 1 1 Si NEIC:LAYSTONE (GREY) BS t } 17.4 ; 1 ` 1 30 11 86.1 ; CL/A-6 87 g$ SC! 106; .} (J73 94 .. nn A S 99 100I 60 i t 140 1 1 I .. 1 i `' ' e l I I l d 1 I • i 1 i ;... 1. 1 t i l t is I 1, n r r 1., The stratdai on t;nes represerr(tlhe app oxlmate boundary dines between solland rock types Inu, the transition maybe gradua Water Observations Two Rivers Testing; . Inc. Boning Starters_ 10117120Q6 W Boring Compfe; 1;Ct11'71200 {initial Logged By: TNt Water Checked: 10/17/06 Approved By: TIM LOG OF TEST BORE -12 (Log 1 of 4) Client: Dust & Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description_ Sample Type SPT-N (BLOWS/FT) 3cr ., T d Q o b J ,� „ v Cta 3. NC. m c = f!3 co ILTY SAND WITH GRAVEL - o ' t r t I , , r t t i i _ 1 2 3 CLAYEY SILTY SAND SILTY SAND 5 4 A : 4)•."•.J 1I t + a i 1 l 1 1 6 BS ry GP :r ; ,rrfi fY fifi f te' rr ref 1" X r r rr rr r -e. r fi� �. 1 .. 'a ;r! , l 1 t I t I f 1 j 1 t , + SIL SILTY SAND$. GRAVEL WITH E _ COBBLE 11 12 13 14 15 17 GROUNDWATER Vx' 16 19 20 21 22 23 '}- 2d25 The stratittcatibn iwnes represent the approximate bounaary lines between soil and rock types. irtsitu, the transition may be gradual. Water Observations Boring Started: Initial WL 0/16i2006 17' � � Boring Complete: WL: � 17' r �R. �.. r J. r 10/16/2006 Logged By: Water Checked: 101716/06 TM Two Rivers Testing, Inc. Approved By: TMC E e. tU t8 O r 0 to • Q) O: s .. IL) N ittt , Q •••I eW -t ifs �Er n qs fio' -4 m A.--• " 2 ro cn n- n a, n r. �+ sw w to w to ca t i w z o tD w J Ch VI 4. w Ni -A C) xn a -a to 1)1 x w Ni --., ,kO C3cpth (tt;'j o a XI aCt2 a Sampte Type UT I-...,-...........„-..---,-.........-....___ _-_ ____ - - ___ . ----- --- ------ -- Apr N i.# �+ r {i ©VVSf7p fn Q x Dry c `to Density ip-'t} lwn a In t 1 I f'Liquid Limit .'-•►• Plastic Index 1;7' it 1 CD b0 -to W ': %Passnt� 2(Jl 4 1It[CflnfiftiCi ' Str ength th ( reng pst) to Swell (psf) ar m f t)S S!AASHTt7 - b Client: Dust & Dirt Excavating Site: LOG OF TEST BORE -12 (Log 3 of 4) Sec 4 Township 5 North Range 65 West Description SILTY SAND & GRAVEL WIT SILTY SAND SILTY SAND &:GRAVEL WITH SILTSTONE/CLAYSTONE (WEATHERED) 73 74 75 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 SILTSTONE (GREY) he strati ion lines represent the aoarOxim Water Observations Initial WL. WL Water Checked. I 17 17' 0/1 /0 S. E m Project: Project No.: C 8J C 0 V Slurry Wall Design 2006-201 p cr U, c o c min to boundary ones between soil and rock types. Insitu. the transition may be gradua T.R.T. Two Rivers Testing, Inc: Boring Started; 0/16/2006 Boring Complete Legged By; Approved By. 10/16/2006 T T LOO OF TEST BORE -12 (Log 4 of 4) Client: Dust& Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description 03 CJ Q II7 tO '�- _ Z r rA m (,� +u g g _ el O o = J .a . 1 b V - 0 o -0 a v tu a C= C cr 0 c D cn _ a. o. to - � U. CO m ., r SILTSTONE i'GRE1't 76 I t 4 1 1 I 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 , ix 124 ; 1 i i , 1 ; ai I. l i 1 t . ; 1 1 I ; I 1 91 ; a ; 1 1 i a I i ; i 1 / 1_ ; I 1- ; , I. s i 1 i s 1 l I ' ; 1 R .I r 1 11 , 1 I I The stratification lines represent the approximate boundary lines between soil and rock types, Insitu, the transition may be gradual. Water Observations ` T.R.T. Two Rivers Testing, Inc. Boring Started: 10/1612008 initial WL: 17' Boring Complete: 10/16/2006 WL: 17' Logged By: TM Water Checked: 1 10/16/06 Approved By: WIC LOG OF TEST BORE - 13 (Log 1 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth (Al 'v a t '- Zp U _ c i7 _ :� g. r Plastic Index f v, m a. Unconfined Strength (psi) a _ z vs j _ SILTY SAND WITH GRAVEL II :r 0,0 '''• f{rrrP.�' F f ¢ji • r.�; rta 'rte' r a rr{!t r` µ •i , I ! ' I F A 2 5 6 SILTY SAND & GRAVEL wiTH COBBLE 7 SANDY SILTY CLAY SILTY SAND & GRAVEL WITH 8 COBBLE GROUNDWATER V 9 10 11 12 13 14 5ea 16 17 19 20 21 22 23 24 25 The strati€Ication lines represent the approximate boundary lines between soil and rock types, nsitu, the transition may be gradual. Water Observations Baring Started: Initial WL. 10/17/2006 9' T R' T Boring Complete: 10/17/2005 WL: g, Logged By. TM Water Che ced: ( 10/17 06 Two Rivers Testintp, Irtc. Aoproved By: TMC LOG OF TEST BORE -13 (Log 2 of 4) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description Depth CrI E t1J Z 44..- in Y Q ro3E 5 .. a ' a a ..- x m a. o w {� *- .� Ti C d fn Uq V SILTY AND •& GRAVEL WITH •"r': .r rrrrtP •r- rr,.." e y r'rrrr�i+�` 4'rt r 4 � i r 1 / r t COBBLE 27 2829 30 31 32 33 34 35 36%EE 37 38 39::::::74-;, 40 41 42 43 45 46 47 rr. e reF 1'r ]r-a•ir - t i. rrt�' "r}04 = rrr r t44 ';`t:- Y s a'k, , -:: r i i i 1 , I � � ! t r y tt� , r t SANDY SILTY CLAY 48 49 SILTY SAND & GRAVEL WITH COBBLE _ 60 The stratification Imes represent the approximate boundary lines between soil and rock types, insito+ the transition may De gradual •-- --- Water Observations 1 Two T ►T+ . . 1 . Rivers Testing, Inc. So trig Started: 1011712006 Initial WL: 9` BonngComplete: 1011712006 WL: 9' t ogged By: TM WaterChi ecked: 10/17/06 Approved By TMC Client: Site LOG OF TEST BORE -13 Dust & Dirt Excavating Project: Sec 4 Township 5 North Range 65 West Project No.: SILTY SAND ,& GAVEL WITH COBBLE SANDY SILTY C SILTY SAND & GRAVEL WITH COBBLE The str tifc tiort lines rep Water Observations iriiti2t WL: 9 OPraximate bounde �ter Checked•" 10/17/06 a a O GS F en soil and r > C a a Log 3 of 4) Slu all Design 0 rn U types. Insitu, thetransition may be'omdua ; T. .T. Two Rivers Testing, Inc: • Boring Started; 0/17/2006 Logged By jThr Aptproved By: LOG OF TEST BORE - 13 (Log 4 of 4) Client: Dust & Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description L d )— As Q c 43 (� > Z 7 n.O o U U. ¢ . tad O — �C J a x o C '— .V m - C! 'y y fl- T.1N , C..LA c Q �, 3 Cr1 c _ SILTY SAND & GRAVEL WITH 76 is l 1 / i t t 7 3 , l COBBLE 77 78 79 80 a1 82 83 84 • SILT STONE. (WEATHERED- ORANGE/RUST) 85 SILTSTONEGREYt 86 87 88 89 90 91 92 9 3 104 161 83 �_ t 1 , l 92 58 116 l i l i i96 94 95 i 112; 96 97 98 i 58 e t l 1 -__, 71 101 t l l , 99 100 i i I I 1 1 1 r , , The stratification lines represent the approximate boundary lines between soil and rock types. Irtsitu, the transition may be gradual. Water Observations Boring Started; 10/17/2006 Initial WL: 9' T.R„ T. Boring Complete: 10117/2006 WL: 9. Logged 9y: TM Water Checked: 10/17/06; Two Ravers Testing, lnC, Approved By: VIC LOG OF TEST BORE -14 (Log 1 of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description o.Qcc 0 Semple Type c a .. a __ a a LLEl3jFE 2. a Unconfined Strength (psn O , SANDY SILT �"`'�w•s t i r r SILTY SAND a y ' , E z 3 5 M,+. xt I i f SILTY SAND '& GRAVEL 8 9 10 11 12 13 14 15 16 17 SANDY SILTY CLAY 18 19 20 21 22 23 SILTY SAND 24 ILTY SAND & GRAVEL WITH COBBLE 25 The staff c0t on lines represent the approximate boundary lines between soil and rock types- Insitu, the transition may tie gradual, Water Observations Boring Started: 10128120136 Initial WL' 40' � Boring Complete, 1012812006 WL:, 40` Logged By; TM Water Checked; ( 10023/06 Two Rivers Testing, Inc. r proved By. TMc LOG OF TEST BORE - 14 (Log 2 of 5) Client: Site: Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West Description SILTY SAND & GRAVEL WITH C0BBLE'= SILTY SAND WITH GRAVEL GROUNDWATER SILTY :SAND &GRAVEL WITH (COBBLE F L4 Ul Z Q Project: Project No.: C U 7 of Slurry Wall Design 2006-201 a J % Passing 11200 O 1O a c c USCS/AASHTO The stratiticatibn lines represent the approximate boundary lines between soil and rock types, Insilu, the transition may be gradual. Water Observations Initial WL. WL.: Water Checked: 1 10/23/06 40, 40' T.R.T. Two Rivers Testing, Inc. Boring Started: Boring Complete: Logged By. ,Approved By 10!23/2006 TM 006 TMC LOG OF TEST BORE -'14(Log 3of5 Client: Dust & Dirt Excavatin• Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description li a. Va <n0 .. w fu 3 u to .1 u o Ch o 0.3 8 cc. co M so rA O ' SItr LTY SAND ,°GRAVELwI 51 '` 0- ;r w ^ ',so, �r � }74 r r i t I A 1 1 I I 1 A I 1 1 1 1 A C d I 1 { I i I I I $ I I i 1 ! } I i I COBBLE c 4a 55 57 ... 59 60 62 Ed f? 67 SANDY SILTY CLAY tLTY ANDS GRAVEL WI 't# COBBLE 70 72 75 Ttfcat 0n lknes present the approximate boundary l,nes between sob and rod types Insitu. the trar',sttiol may be graduat, Water Observations Boring Started: 10723/2006 'I" Initial VVL.: 40' J? Boring Complete: 10/23/2006 Lag. ed By: TM Water Checked: > 10/23/06 Two Rivers Testing, Inc. Approved By. TMC LOG OF TEST BORE -14 (Log 4 of 5) Client: Dust & Dirt Excavating Project; Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Description a a a 1- •N co H= u. z m co o C3 To — e v a y = O E . x c _� 4 o a, so s a Ls c '.I) a U) C) z co fa SANDY SILTY CLAY 76 v i 78 ; SILTY SAND & GRAVEL WITH 79 r w ; COBBLE 80 SANDY SILTY CLAY g SILTY SAND & GRAVEL 83 gfr' 84 65 87 - ILTY SAND & GRAVEL WITH COBBLE91 �i 92 93,1 95 96 97 99 i FK`,t � y.�t 1'r�♦fi j 6 oSi, i i The stratification lines represent the approximate boundary lines between soil and rock types. Insitu, the transition may be gradual Water Observations T..T. R Iwo Rivers Testing, Inc. Boring Stetted: 10/23/2006 Initial WL, 40' Boring Complete: 10123/2006 W�' 4O1 Logged By- TM Water Checked: ( 10/23/06 Approved By. TMC LOG OF TEST BORE -14 (Log 5 of 5) Client: Site Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West SANDY SILTY CLAY 110 SANDY SILTY CLAY SILTY SAND & GRAVEL WITH CO88LE. stratification lines represent the approximate bounstary lines Water Observations initial WL: WL; Water Checked: F 10/23/06 40 40' Project: Project No.: O C) V Slurry Wall Design 2006-201 E 6 O C tg • L • d O to- eiween soil and rock types_ Insitu, the transition may be gradua . T.R. T. tBoring Started. Boring Y r oaed, Complete: ogged 9�3edB By: Two Rivers Testing, inc. 0123/2006 10/23/2006 T. TMC LOG OF TEST BORE -15 (Log 1 of 5) Client: Site: Dust & Dirt Excavating Sec 4 Township 5 North Range 65 West Description SILTY SAND WITH GRAVEL SANDY SILTYCLAY SILTY SAND WITH GRAVEL The stratification lines represent,t Water Observations Initial WL: 35" 35' Project: Project No.: 0 U U a c 0 L) Slurry Wall Design 2006-201 proximate boundary fines between self and rock types, tnsitu, the transition may be gradual Water Checked.' J 10/23/06 T.R.T. Two Rivers Testing, Inc. Boring Complete, Logged By; c a I Boring Started: 10/23/2006 10/23/2006 TM Approved By LOG OF TEST BORE - 15 (Log 2 of 5) Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Townships North Range 65 West Project No.: 2006-201 Description Depth (f:) m a e'. 2 Vim S' G _ c C = @ C II. ze 8 a =a co SANDY SILTY CLAY 26 } ,e - ftftlkY't � rx . r Ir{z •.ryr� 7.t rrtr k C^*fir rir.r rrrr. rdr,0tit . rf� z .' ., r�� o''i�'.icY* o , 1 27 28 29 SILTY SAND WITH GRAVEL 30 31 32 33 34 SANDY SILTY CLAY 35 'SILTY SApN©D & GRAVEL !WITH COBBLE 36 GROUNDWATER 37 38 39 40 41 42 43 44 45`tia 46 47 48 49 50 'l`dt The strati 1cabon times represent the approximate boundary {fines between soli and sock types Insitu, the transllion may be gradual. Water Observations R. Two Rivers Testing, inc. Boring Started: 10/2312006 initial WL 35 Boring Complete: 10/23/2006 WL: 35` Logged By: TM Water Checked: I 10/23/06 Approved By: TMC I .•-••••-••• - • .. .•••.••• ..•••••-••-••••- -------- --- -- ••••••••••••••••,••••••-••,. • ••••• • • • • - ' -- -- •••••••••••••••••••...... . ••• ... ..... Client Site: LOG OF TEST BORE -15 (Log 4 of 5) Dust & Dirt Excavating Sec 4 Township 5 Nort Range -65 West Description SILTY SAND & GRAVEL WITH 76 CDBBL SILTY SAND WITH GRAVEL SANDYStLTY CLAY SILTY SAND & GRAVEL WITH COBBLE 77 78 79 80 81 82 83 84 85 86 87 88 89 90 92 93 94 95 96 97 99 100 a) re Z r O to m Project: Project No.: C 4 O E G V a C a a The stratification dines represent the approxiFnate boundary tines between soil and rock ty Water Observations Initial WL: W' Water Checked f 1O123/06. 35' 35 TART. Slurry Wall Design 2006-201 403 N N a II es, Insitu, the transition may be gradualIA Boring Started: Two Rivers Testing, Inc. Boring Complete: Logged By: pproved By: 10/23/2006 U) 10/23/2036 LOG OF TEST BORE -15(Log 5 of 5} Client: Dust & Dirt Excavating Project: Slurry Wall Design Site: Sec 4 Township 5 North Range 65 West Project No.: 2006-201 Depth (ft.) Sample Type SPT-N (BLOWS/FT) •Description o Is @ \ e.. 'a 2' n _ E Q. x U C a * C CO a. m c 0- C .�7 in 0 cri a rn SILTY SAND 8 GRAVEL WITH 101 o 0 , a. ;� I I I , i i I t , , , COBBLE 102 103 . 104 105 106 107 108 105 110 111 f��r4 r•��,, 4 SILTSTONE (WEATHERED- BROWN 112 113 114 115 76 . I - i SILTSTONE IGREYt 12211 117 118 119 120 121 122 123 124 125 107 t i I I I I I I I -t 1137 1 I I I € 95 +++ I I I I !! ( r ' _ The Stratification line s represent the approximate boundary lines between soli and rock types. Insitu, the transition may be gradual. Water Observations Two T.R.T. 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Client: Dust & Dirt Excavation Project Name: Slurry Wall Design Project No: 2006-201' SUMMARY OF TEST RESULTS Test, Bore No. Depth (ft) Moisture Q (%) Dry Density Compressive Strength (psf) Strength (psf) (°!d) Swell Pressure Liquid Limit Plasticity ° Index { /°) % Passing No. 200 USCS AASHTO Classification Penetration (Blows/12 inches) 1 30 7.3 3.5 GP 1 49 111 1 51 119 1 52 74 1 64 104 2 85 68 2 86 82 2 87 60 2 88 125 2 89 76 3 75 6.3 3.9 GIN 3 87 687 3 88 224 4 38 16.7 3.2 SP 4 85 86 4 86 122 4 87 60 4 88.5 31-6" 5 3,5 0.9 1,5 SP 5 80 71 5 82 91 5 83 88 5 84 126 Test Bore No. Depth jft} .Moisture ( /o) Dry Density (pcf) Compressive Strength {ps#) SweA Pressure (psf) Liquid Limit o (%) Plasticity index ( /o) °jo Passing No. 200 USCS AASHTO Classification Penetration (Blows/12 inches) 5 85 45 6 89 20.1 6 90 88 6 91 74 6 92 89 6 93 63 7 77 63 7 78 18.0 33 16 86.9 CL A-6 104 8 64 31.0 20 39 21 97.5 CL A-6 8 79 93 8 80 159 8 81 94 8 82 148 8 83 90 8 84 125 9 90 99 9 91 75 9 92 122 9 93 91 10 83 141 10 84 62 10 85 92 10 86 75 10 87 100 10 88 56 11 86 17.4 30 11 86.1 CL A-6 Test Bore Depth (ft) Moisture ( ) Dry Density pcoStrength Compressive (psf)(pso(%) Swell Pressure Liquid Limit Plasticity Index ( lo) °r° Passing Na 200 USCS AASHTO Class fication Penetration (Blows/12 inches 11 88 67 11 89 80 11 90 106 11 91 60 11 92 140 11 93 73 12 8 3.1 0.6 GP 12 74 127 12 76 124 12 78 91 13 87 104 13 88 161 13 89 83 13 90 92 13 91 58 13 92 116 13 93 96 13 94 112 13 95 58 13 96 71 13 97 101 14 N/A 15 114 76 15 115 122 15 116 109 15 117 137 Test Bore No. Depth (ft) Moisture (%) Dry Density (po Compressive Strength (psf) Swell Pressure (psi Liquid Limit (%) Plasticity Index (% % Passing Na 200 USCS AASHTO Classification Penetration. (Blows/12 inches) 15 118 95 APPENDIX E J&T Consulting, Inc. Broken Arrow Investments, LLC - Derr Pit Project Slope Stability Analysis Peak Acceleration (%g) with 2% Probability of Exceedance in 50 Years USGS Map, Oct. 2002rev 125°w 50°N 45'N 40`N 120°W 115°W 110"W 105°W 95`W 100°W _ 50°N 45°N 40'N 35`N �� o� n1 �.1. ' �� /. ��, �l � �� f11�� 35°N 30'N 25°N 125w 120°W 100°W 25°N 95°W 300 200 160 120 80 60 50 40 30 20 18 16 14 12 10 8 6 4 2 0 115°W 110°W 105°W Hello