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HomeMy WebLinkAbout971137.tiff May 8, 1997 r, Gary Curtiss CI ^ - Environmental Protection Specialist Colorado Division of Minerals and Geology 1313 Sherman St., Room 215 Denver, CO 80203 Subject: Response to Your Adequacy letter of November 5, 1996, Del Camino Sand and Gravel Mine, File No. M-96-052, Owens Brothers Concrete Co. Dear Gary: I need to preface our response to your adequacy letter with a project history and the objectives of the permittee (Owens Brothers Concrete Co.). Owens Brothers Concrete has historically purchased construction aggregates from commercial producers for use in their ready mix concrete business. The company purchased the Del Camino property in 1985 with the intent of eventually permitting it and mining the aggregate for their own internal use. Last year we gained approval from the Weld County Commissioners, filed the CMLRB application and filed the Substitute Water Supply Plan with the Division of Water Resources (copy of application document attached to this letter). The company's intent is to initiate mining in the next year or perhaps two and obviously wants and needs all permits in place. Detailed, final plans for the operation have not been formulated. For this reason we would like to gain permit approval from the Division now and submit the various details that you have requested later, when they are known. Submittal of these details will be a precondition to land disturbance along with the submittal of a financial warranty for reclamation. Item#1: Discharge Permit The applicant has not yet applied for a Colorado Discharge Permit System (CDPS) permit to the Colorado Dept. of Public Health and Environment (CDPHE). According to the Substitute Supply Plan submitted to the State Engineer(on January 21, 1997), water from the dewatering operation will be discharged into St. Vrain Creek. The exact location of the discharge point is not currently known but will be shown in the CDPS permit application. The applicant will provide the Division with verification that the CDPS permit has been approved prior to any mining disturbance. We request that this be a condition of permit approval. &&; ft; Pw)//i-- 971137 Page 2 Item#2: Stormwater Management Plan The Stormwater Management Plan is a requirement of the CDPS permit and will be prepared at the time of CDPS permit application. The applicant will provide the Division with verification of the Stormwater Management Plan prior to mining disturbance. It is the operator's intent to contain all runoff from disturbed land on site and divert it into the mine pits using small, earthen diversion ditches and berms. These minor earthen features will be reclaimed as part of the reclamation plan currently on file with the Division. We request that the permit be approved with this condition. The applicant will submit a financial warranty upon permit approval. If, after development of the Stormwater Management Plan, the financial warranty needs to be changed for some reason, the applicant will do so. Item#3: Flood Hazard Development Permit A revised Exhibit M is attached which includes the Weld County Flood Hazard Development Permit (a copy of the permit approval is also attached). No erosion control on hydraulic structures of any kind are required by the Flood Hazard Development Permit. There will be no impact on reclamation costs. Item#4: Topsoil Stockpiles Exhibit C-2 shows typical locations for gravel processing and stockpiling. Topsoil stockpiles may be temporarily located in areas that are within the 100 year flood plain. The applicant hereby commits to building elongate stockpiles with the long axes roughly parallel to the flow of the river(where those stockpiles are within the 100 year flood plain). This commitment is also a part of the Weld County Flood Hazard Development Permit. Item#5: State Water Engineer Compliance A well permit application and substitute water supply plan have been submitted to the Colorado Division of Water Resources, State Engineers office (on January 21, 1997). The applications have not yet been approved and we believe they will be approved (copy of application attached). We request that the Division approve the mining permit conditional on State Engineer's approval prior to exposing groundwater. Page 3 Item#6: Hydrologic Balance Water well Permit #38262 (issued to Fred Craig) is on the Timko property. A field visit to the SW, NW Section 32 revealed a water well on the Timko property. A revised Exhibit G-1 is attached showing the approximate location of this well. The revised Exhibit G-1 also shows the location of the groundwater monitoring well installed on the Acord property by Owens Brothers Concrete Co. The well was installed on September 13, 1996 to a total depth of 25 ft. It is a 2" diameter monitoring well completed in the alluvial aquifer. The screened portion of the well extends from 3 ft. below ground surface to the total depth of the well. Groundwater was encountered at 6 ft. below ground surface at the time of drilling. Two additional groundwater monitoring wells will be installed on the property prior to mine disturbance. One well will be installed in the vicinity of the Timko well and the other well will be installed in the southern portion of the property. A water level monitoring plan including at least five quarters of data will be submitted to the Division prior to mine start up. The monitoring plan will include a definition of negative impact and a mitigation plan. We request that these provisions be made conditions of permit approval. Item#7: Direction of Groundwater Flow There are no on-site monitoring wells on the property. The expected direction of groundwater flow (i.e. towards St. Vrain Creek)was assumed based on topography, experience with similar alluvial environments and conversations with gravel mining companies in the vicinity. The installation of three monitoring wells on the property will allow an accurate determination of the direction of groundwater flow on a seasonal basis. Item#8: Dewatering Impacts on Wetlands The mining and reclamation operations were designed to avoid excavating or filling in designated wetlands. The U.S. Army Corps of Engineers does not regulate dewatering adjacent to a wetland even if the dewatering negatively impacts the wetland. Our initial response to this item is that this issue is not regulated by the Federal government under the Clean Water Act. The Division is correct in the assumption that dewatering adjacent to the wetlands may temporarily lower the groundwater that is the source of the wetland vegetation. As mining is completed in an area adjacent to wetlands, the groundwater will recover to its original level and, we believe, continue to support wetland vegetation. There are currently no plans for mitigation of potential wetland impacts except that creation of ponds and shorelines during reclamation will create more aquatic habitat and greatly expand the Page 4 acreage of"waters of the United States" as regulated by the U.S. Army Corps of Engineers. Item#9: Bond Calculation Issues There will be no permanent buildings or structures built on site that will require demolition. A completely portable processing plant (and related structures) will be used. It is estimated that no more than ten acres will be excavated at any one time before reclamation would commence. Reclamation would then proceed concurrently with the mining throughout the life of the project. This ten acre figure is used here to calculate volumes of topsoil and overburden that will be stockpiled on site. One foot of topsoil will be stripped over the ten acre area and stockpiled. This amounts to 16,135 cubic yards of topsoil. It is estimated that the average push distance will be 300 ft. Approximately five ft. of overburden will be removed, which over a ten acre area will amount to 80,666 cubic yards. This overburden material will be pushed an average of 300 ft. onto the pit floors and side slopes for reclamation purposes. The average depth of topsoil to be replaced will be approximately two ft. (topsoil will not be placed on the pit floor which will ultimately be a pond bottom). The average depth of overburden placement will be five ft. (same thickness that was removed). Topsoil and overburden stockpile locations that are shown on Exhibit C-2 are designed to avoid the 100 year flood plain. However, stockpiles will most likely be temporarily located in the central portions of Phase 1 and Phase 2 (so that they will be close to areas to be reclaimed). Item#10: Sinclair Pipeline Easement Stability A letter from a geotechnical engineer is attached addressing the Division's comments. The operation will comply with the slope angle recommendations contained in the letter. Item#11: Additional Structures within 200 ft. a) Seep Drainage Ditch -the applicant hereby commits to moving the southern limit of mining in Phase 3 to the north to be at least 200 ft. from the ditch. b) The commitment in (a) above addresses the irrigation ditch south of the Seep Drainage Ditch. Page 5 c) The irrigation lateral ditch extending north from the Last Chance Ditch will be relocated under agreement with the owner of the property north of County Road 263/4 (copy of agreement attached). d) The operator hereby commits to mining no closer than 200 ft. from the power poles until such time as a notarized compensation agreement with the owners of the poles is submitted to the Division. Item#12: Topsoil Replacement The operator commits to replace a minimum of twelve inches of topsoil on disturbed areas (except for those areas that will ultimately be below the water surface). Item#13: Slope Steepness The operator commits to regrade all slopes to an angle no steeper than 3H:IV. Please call me at 202-0737 if you have any questions. Sincerely, Paul T. Banks cc: Mike Owens, Owens Brothers Concrete Co. PTB/bf REVISED EXHIBIT M OTHER PERMITS OR LICENSES (4/18/97) The following licenses and/or permits are required in addition to the CMLRB Permit amendment. • Weld County Use by Special Use Permit (approved March 6, 1996). • Air Pollution Emissions Notice (MEN) and control plan (Fugitive Dust Permit) from the Colorado Department of Health Air Quality Division. • Water well permit and plan of augmentation from Colorado Division of Water Resources. • National Pollutant Discharge Elimination System (NPDES)Permit (Process Water and Stormwater Discharges Associated with Sand and Gravel application) and stormwater management plan (if necessary). • Well County Flood Hazard Development Permit I-IATTON WATER CONSULTANTS, INC. 4851 Independence St. (303) 422-5656 Suite 248 Fax 422-5755 Wheat Ridge, CO 80033 January 21,1997 Mr. Hal Simpson, P.E. State Engineer 1313 Sherman St. Rm. 818 Denver, CO 80203 RE: Substitute Supply Plan, Del Camino Pit, MLRD Permit Pending Dear Mr. Simpson: Owens Brothers Concrete Co. submits this substitute supply plan for the proposed Del Camino Pit, located in Sections 32, T.3 N., R.67 W., Weld County, Colorado (Fig. 1). Owens Brothers Concrete Co. proposes to mine sand and gravel beginning in spring of 1998. The operation will mine approximately 300,000 tons per year and the approximate life of the mine is 10 years. Enclosed with this plan is a well permit application and a check for $1,403, the plan application fee of$1,343 and the well permit application fee of $60. PROJECT DESCRIPTION The Del Camino Pit will consist of approximately 86 acres of mined area in the alluvium of the St. Vrain River. Enclosed is the vicinity map prepared by AGRA Earth and Environmental MLRB 112 Permit Application. The vicinity map shows the boundaries of the area proposed for mining. The operator currently plans to begin mining in the spring of 1998. The pit will be dewatered and mined dry. The water from the dewatering operation will be discharged into the St. Vrain River. The property has been, and is currently, used to grow crops. This plan will utilize the consumptive use credit from the irrigation in addition to leased effluent to provide for replacement of depletions. Mr. Hal Simpson May 21, 1995 Page 2 DEPLETIONS Owens plans to mine 300,000 tons per year. The water surface area exposed to the atmosphere will consist of a small area of residual water in the sump and dewatering trench that will line the circumference of the mining area.. We estimated that there will be no more than 2 acres of water exposed during the mining. The depletions from mining of the Del Camino Pit will result from evaporation and water lost in the product. The gross evaporation of 40.5 inches per year was determined from the NOAA Technical Report NWS 33. The monthly distribution is based on the SEO draft criteria dated February, 1995. Table 1 shows the estimated evaporation depletion on a monthly basis. The depletions are shown on a calendar year. Since the water surface area will not increase, the area exposed will remain the same during mining and the monthly product mined will vary. No water will be used for dust suppression. REPLACEMENT PLAN Owens proposes to replace depletions using effluent from the City of Longmont and water from the Last Chance Ditch released at the metro plant. Presently, the property is being irrigated by the Last Chance Ditch. The enclosed Vicinity Map shows the Last Chance Ditch. The historic irrigated acreage is the area within the mining boundary. The cropping pattern for at least the past decade has been to plant 50% corn and 50% alfalfa. We estimate the potential crop consumptive use to be 22.7 inches for corn and 26.5 inches for alfalfa. The Blaney-Criddle analysis is attached. Based on the Blaney Griddle analysis and an irrigated area of 100 acres, the crops have a total potential crop CU of 278 acre feet per year. The total annual depletion from the mining operation will be 23.7 acre feet. Table 2 summarizes the depletions and replacement amounts. The historic consumptive use credits will offset depletions during the irrigation season. We estimate that 4.2 acre feet of water will be needed from an effluent lease for replacement during non-irrigation months. Owens plans to divert the water from the Last Chance Ditch directly into a small pond Mr. Hal Simpson May 21, 1995 Page 3 located at the southern end of the property area. This pond will serve as a recharge reservoir and clear water pond. The timing of depletions will approximately match the timing of the replacement and historic depletions. Owens will provide replacement for non-irrigation season depletions from leased effluent from the City of Longmont. Due to the long lead time on this project Owens has not entered into an agreement with Longmont. We have contacted the city and have been informed that water is available. We request that this plan be approved contingent on obtaining water from Longmont. Enclosed with this plan is proposed accounting form which will be submitted to the Division Engineer. Attached to this plan is the original well permit application. If you have any questions please feel free to call. Sincerely, HATTON WATER CONSULTANTS, INC. Tom Hatton Principal Geologist Enclosure cc: Paul Banks, Paul Silas R61W /, . . if I 479E . / W o. if : 7 -- _ O H 10' < i • •444 / V M 6't Vrain Sc I� °� / a6W1 '� p ilJ 0 DI I��_ � — : t / : _ T 3N \----, BM3 � r / 4—"I� ' 4813 a • 4e/3 n _ �• , I/ -� ( bs, r i { IM l / 4900- j� I I % fir -- -- - - 1 MILE 0 r--. Scale Owens Brothers 1":24,000' Mining Permit Boundary Sand & Gravel Mine Date JAN. 1997 —No. HATF'ON WATER 96014 CONSULTANTS INC. F'°'"' 1 Table 1 OWENS BROS. SAND & GRAVEL Diversion records for Last Chance Ditch for years 1980 to 1995 APRIL MAY JUNE JULY AUG SEPT OCT YEAR 1980 0 143 1883 2218 2168 1618 677 1981 1335 2166 2160 2661 2925 2426 1907 1982 1154 1622 2004 2485 2515 1721 349 1983 0 0 558 2014 2039 2063 1733 1984 0 943 1927 2297 1873 719 125 1985 386 1628 1996 2313 1992 1836 319 1986 0 1313 1970 2507 2543 1932 1158 1987 389 1521 1523 2567 2698 2112 1139 1988 218 1720 2046 2935 2844 2412 1621 1989 260 2139 1757 3047 2892 1843 0 1990 0 1732 1596 2963 2833 1922 335 1991 0 0 0 0 0 0 0 1992 0 0' 0 0 0 0 0 1993 0 0 0 0 0 0 0 1994 0 2475 2982 2605 2038 1796 448 1995 728 2568 2754 2344 2868 2209 101 Total act 4469 19968 25155 32954 32228 24607 9910 Aver. act 298 1331 1677 2197 2149 1640 661 Aver. for1.! 24 106 134 176 172 131 53 Shares 0 O N O W O CVCD0 CO CD 0 r (NI coOOD r g ^ L0 OO 4 t7 O O) P7 d d O coN C O_ LO 0 O O) N d 0 0 d d '3L0O O l0 d 0 d d co c a)GY7 O N) fh d N O O O O ca > 0 N O 0 r O o N. 0 O) n r co "a '1. co cm coin < L0 r N CO CO C 7 Z O d d 0 C) O O O O "0 is V co _ O O '+Ji co 0 0 C0)D 0 O O) CO. 0 0) L0 0) O W 0 0 t0 CO O 0 C) L0 r CO O .0 onroLo . o � oaUl i0 a) o ME r1P: C)N OO oo co d CV00) NI -a- r d r 0 C = (aOo7 LO AN co. r N 7 70 c O C) 07 1 O O 6 .- Ori 0)O � 0 W 'C in a) NI- W a) C LA O) O a) ,h':. 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STATE OF COLORADO For Ctfice Use only GWS 8/99 OFFICE OF THE STATE ENGINEER 823 Centennial Bldg., 1313 Shaman St.,Denver,Colorado 80203 S RECEIVED (303) 866-3581 SEE INSTRUCTIONS ON REVERSE SIDE " JAN 21 1397 GRAVEL PIT WELL PERMIT APPLICATION W$$P ESOURCR ca COLO 1. TYPE OF PERMIT a_ M u. ❑NEW PIT(S) " O O ❑ PIT(S) EXIST, CONSTRUCTED AFTER DEC. 31, 1980 CC at CO ❑REACTIVATION OF PRE JAN. 1, 1981 PIT(S) OC I 2. OWNER 4 NAMES) Owens Bothers Concrete Company s� Mailing Address 5501 Sheridan Blvd . t-"= City, St. Zip Arvada , Co 80002 Phone ( 303 ) 429-5850 3. ADDRESS OF LOCAL CONTACT (If different than #2) NAME(S) Hatton Water Consultants , Inc . PIT NAME Mailing Address 4851 Independence St . Suite 248 Del Camino City, St Zip Wheat Ridge , Co 80033 Phone ( 303 ) 422-5656 4. GENERAL LOCATION OF PIT(S): COUNTY Weld West 1 /2 1/4 1/4, Sec. 32 Twp. 3 D N. ❑S., Range 67 ❑E. 11 W. 6 P.M. S. Total number of water surface acres (to be) exposed 2 . Total Number of Pits 1 6. Estimated depth of pit 20 Estimated depth to groundwater 5 7. (a) Estimated date to begin excavation Spring 1 998 , to complete excavation 2008 8. ATTACHMENTS: (Check which have been attached.) (a) El Scaled map of pit area tied to a Section or 1/4 Corner (Required). (b) ❑ Copy of the reclamation permit if applicable. (c) ❑ Copy of Pre 1/15/89 Water Conservancy Dist. or Water User Assoc. Augmentation Agreement if applicable. (d) El Copy of proposed Augmentation or Temporary Supply Plan if applicable. (e) ❑Copy of Court approved Augmentation Plan if applicable. (f) ❑Other ' 9. Detailed description of the use and method of diversion of any water withdrawn from the pond. Water will be diverted with sump pump and discharged into St. Vrain River . Water will also be with the product and by evaporation . 10. I (we) have read the statements made herein and know the contents thereof, and that they are true to my(our) knowledge. 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S 1 N 1 0 o o - vNg 1 8 g 4 - n g m =rr 1 .j dn. 1 apron Yn .7 I 6 eI e 5II — rr m $ 0 ro ro g m` I o m o _NrN a r N ? d - o 1r n } I ' a I 1 as $ § 31, 56361Ras4• g ; � e a p 4 l c I � .f � ., .. w y I <. w � .' .� y C� 7 F:, Z h. 3 3 r7� - z - - ; I ri g I i 1 01 .15:97 12: 55 FAX fF'j Onl DEPAR IMENT or PLANNING SERVICES FLOOD HAZARD DEVELOPMENT PERMIT ADMINISTRATIVE REVIEW Applicant Owens Brothers Concrete Company FHDP: 263 Legal Description: Part of the W2 of Section 32,T3N, R67W of the 6th P.M.,Weld County, Colorado FIRM Map No: 0802660855C,September 28, 1982 Permit is approved. The plans and materals submitted in support of the proposed development are in compliance with applicable floodplain management standards in the Weld County Zoning Ordinance. X Permit is conditionally approved. Provided the conditions of approval are met,the plans and materials submitted in support of the proposed development will comply with the applicable floodplain management standards in the Weld County Zoning Ordinance. Conditions of approval: 1 All conditions of approval and development standards as stated in USR-1102 shall apply to this Flood Hazard Development Permit. Permit is denied. The proposed development is not in conformance with applicable flood plain management standards in the Weld County Zoning Ordinance (explanation attached). Variance is required. The proposed development will require approval of a variance by the Board of Adjustment if the applicant wishes to proceed with construction. Please call the Department of Planning Services to discuss the appropriate application materials needed to apply for a variance. • OE-te LP , / 99 r, Shani L. Eastin, Cu a Planner December 6, 1996 November 8, 1996 Owens Brothers Concrete AEE Project No. 6-317-000015 5550 Sheridan Boulevard Arvada, Colorado 80004 Attention: Mr. Mike Owens RE: Geotechnical Engineering Opinion and Response to Comments Post-Mining Stability of the Sinclair Pipeline Easement Owens Brothers Concrete Company Del Camino Sand and Gravel Mine Weld County, Colorado Dear Mr. Owens: We have received comments dated October 18, 1996 from the State of Colorado Division of Minerals and Geology(DMG), through Gary Curtiss and prepared by Allen Sorenson. Their letter relates to the amount of setback that should be required to keep the Sinclair Pipeline safe from slope stability issues in worst-case and extreme worst-case mining scenarios. They have no problem with the application from the standpoint of post-mining, reclaimed configuration. The concern expressed by DMG is with temporary vertical or near vertical cut slopes that might be made and left un-reclaimed under various conditions. We agree with their analysis and conclusions that vertical slopes are indeed unstable under unsaturated, saturated or rapid draw- down conditions. If the unlikely event of DMG's Case B were to occur with Failure Surface #3 (FS=1.25), the Sinclair Pipeline would be within the failed area under rapid drawdown conditions, because the pipeline is located 5 feet closer to the east easement line than the west line. We do not recommend vertical slopes in granular materials, even temporarily, because it cannot be shown that such a slope will stand. The issue is to recommend the slope that will allow the operator to recover the maximum amount of permitted resource safely, with a minimum of risk to personnel and equipment safety as well as future exposure to repair work outside of mining limits and easement lines. Mr. Mike Owens AEE Project No. 6-17-000015 Sinclair Pipeline Easement Stability Study November 8, 1996 Del Camino Pit Page 2 Weld County, CO A comment about rapid draw down is in order. This refers to the development of hydrostatic uplift pressure in a soil slope when the water level is taken down faster than the ability of the material to drain or dissipate pore water pressure. For a granular soil such as is being mined on this site, we expect fairly rapid dissipation of pore water pressure due to the highly permeable nature of the material. For the temporary condition where a steep, un-reclaimed pit slope is allowed to flood (i.e. turn off the dewatering pumps), and then the pit is pumped out, we would expect the slope to have first raveled to near the angle of repose, somewhere between 1:1 to 1.5H:1V, due to seepage forces and the high ground water exit gradient. Because the permeability of sand and gravel is fairly high, and about 22 feet of hydrostatic head would have to be dealt with to again make the pit dry, it would be reasonable to expect that the perimeter dewatering system will be in operation concurrent with the pumping out of the pit. Therefore, it is unlikely that rapid draw down would occur because drained sand and gravel would be well back into the embankment as the pit is pumped out. Recognizing DMG's comments and the realities of sand and gravel mining, we recommend that mining be done with temporary pit slopes no steeper than 0.5H:1V, and more shallow if pit conditions necessitate. In the unsaturated condition, analysis of this configuration gives a factor of safety of 2.54 for a failure surface extending from the mining limit 30 feet back to the easement line. Considering an average of 3 feet of positive pore pressure along the saturated length of the same failure surface, a factor of safety of 1.36 was generated. This is considered to be adequate. In this analysis, we have considered the pipeline easement as essentially inviolable. The easement line leaves a minimum of 20 feet and a maximum of 40 feet horizontally to the pipeline location. This is with the understanding that should slumping and raveling into the pit occur from gravity, flooding or future dewatering, the failure surface will daylight within the zone between the mining limit(set back) and the pipeline easement and can be relatively easily repaired. If it must be demonstrated that absolutely no encroachment into the area behind the mining limit can occur, then even temporary pit slopes should be cut no steeper than 1.3H:1V, which is the approximate long-term angle of repose. However, this does limit the recovery of a valuable, permitted resource for little, if any benefit. As with any slope steeper than the natural angle of repose, it is recommended that reclamation to plan contours be done as soon as practicable. It is our opinion that the above recommendations will not result in slope failures that extend within the pipeline easement. Mr. Mike Owens AEE Project No. 6-317-000015 Sinclair Pipeline Easement Stability Study November 8, 1996 Del Camino Pit Page 3 Weld County, CO We trust that the issues raised by DMG have been adequately addressed. A copy of this letter will be faxed to Allen Sorenson. He was unavailable for consultation during this week. Please call if there are any questions. Respectfully Submitted, .AGRA Earth & Environmental, Inc. David A. Glater, P.E., C.P.G. Senior Geotechnical Engineer OWENS BROS. CONCRETE CO. DISPATCH: 366-1100 Aucust 15, 1996 Mr. Gilbert P. Accord 7541 Weld County Road 26-3/4 Longmont, CO 80501 Dear Mr. Accord: It is our understanding that we have reached an agreement as outlined in this letter. If this letter states the agreement correctly, please sign the enclosed copy and return it to us. We will then have the easements prepared by our attorney. 1 . It is our understanding that we are to grant you a non- exclusive easement for the purpose of carrying water to your real property from the Last Chance Ditch, over our real property which lies in the West half of Section 32 , Township 3 North, Range 67 West of the 6th P.M. , Weld County, Colorado, through a lateral ditch, and for a roadway to maintain the same, along the west ditch alignment from the headgate to County Road 26 and 3/4 , 30 feet in width, extending ten feet from the centerline of the ditch eastward, and 20 feet from the centerline of the ditch westward. We will also provide a 30 foot non-exclusive easement for a new ditch from the existing west delivery point all the way east to the east delivery point. This latter 30 foot easement would lie just inside our north property line. The foregoing easement shall be subject to the prior easement for the Sinclair Pipeline which was recorded on October 23 , 1963 , under Reception No. 1419698 in the Weld County Real Estate Records. 2 . Any portion of the above described ditch that remains in its current alignment will remain as is, without further improvement. Any portion reconstructed in a new alignment along County Road 26 -3/4 will be either cement lined or placed in a concrete pipeline at our sole discretion. The new cement lined or piped ditch will be constructed to handle the water capacity which you currently need. 3 . You will also have access to these ditch laterals for maintenance. 4 . We will construct the new alignment so that there will be sufficient fall to the ditch from the west to the east. OAK 191:052396.11/6316 MAIN OFFICE: 5550 Sheridan Blvd., Arvada, CO 80002 • Phone: (303) 429-5850 • FAX: 429-5916 DISPATCH/ACCOUNTING: 15302 E. 25th Drive,Aurora, CO 80011 • Phone: (303) 366-5352 • FAX: 366-0151 Mr. Gilbert P. Accord August 15, 1996 Page 2 5 . We will construct a control gate which will permit you to direct water from the north-south ditch to either delivery point or both. This control gate will be located at the north point of the north south portion of the ditch. 6. We also agree that we will not cause your average ground water level to drop as a result of our mining operations, and for this purpose we propose to install a monitoring well (piezometer) on your property which you would permit us to read each month after our mining permit is approved by the County Commissioners. We agree to share the readings with you so that we will both have a record of the water level , as it exists from time to time, through the completion of our mining operation. 7 . In return, you agree not to protest the removal of the easterly ditch. OWENS BROS . CONCRETE CO. By: ///cit �`:.�.�� �✓cns n . The undersigned hereby approves and agrees to the terms and conditions set forth in the foregoing letter and agrees to abide by them. GILBERT ACCORD By: ou .v RAtrtL .. Itdt?as, Loretta Rhodes Attorney in Fact OAK191:052396.11/6316 NON-EXCLUSIVE EASEMENT AGREEMENT For and in consideration of the sum of Ten Dollars and other good and valuable consideration, receipt of which is hereby acknowledged, Owens Bros. Concrete Co. , a Colorado corporation, hereinafter referred to as Grantor, does hereby grant and convey until Gilbert P. Accord, his successors and assigns, hereinafter referred to as Grantee, a non-exclusive easement for a lateral ditch to carry water from the Last Chance Ditch over a portion of Grantor' s property in the Nast half of Section 32 , Range 67 West of the 6th P.M. , in Weld County, Colorado. That portion of Grantor's property over which such non- exclusive easement is hereby granted is legally described in Exhibit A hereto attached. The purpose of the foregoing grant of a non-exclusive easement is to permit the Grantee to cause water to be carried to Grantee ' s property over a portion of Grantor' s property from the Last Chance Ditch, and to permit the Grantee to have reasonable access to maintain such lateral ditch. This non-exclusive easement is subject to the prior easement granted to Sinclair Pipe Line Company and recorded at Reception No. 1419698 of the Weld County real estate records. The Grantor shall have the right to use and enjoy all of its real property in the West half of Section 32 , Range 67 West of the 6th P.M. in Weld County, Colorado, except as may be necessary for the pipeline easement granted to Sinclair Pipe Line Company as DAK192:072396.11/6316-5 1 referred to hereinabove and the Non-Exclusive Easement for a lateral ditch granted to the Grantee herein. IN WITNESS WHEREOF the Grantee has executed this Non-Exclusive Easement this U. day of Au61,sr , 1996. OWENS BROS . CONCRETE CO. By: ,)))L -- NC G/�Je-� •)iz-s STATE OF COLORADO ) ss. COUNTY OF A D A n.S ) The foregoing instrument was acknowledged before me by S o Nu Lo wens - 1te OS . , as President of Owens Bros. Concrete Co. , a Colorado corporation. Witness my hand and official seal : 8 -16-`i (- IA • G.w - Notary blic My commission expires: IC 1-q7 DAK192:072396.11/6316-5 2 Oa; ia;'ia9a __. 30 000C10000o': J0 U. ;;E .,., .. ..:;a:i `:,. FACIE 04 L. uU11 Rlrt Iry fdY..:J 1;•-. Il1 ;ii fllUi -7 i •.iC P. 1.1V RONALD W. ADAMS, P.L.S. LAND SURVEYING 508 5t1 Avmue Luupncnt, Co 80501 Pager(303)651-$039 (303)772-1177 Fax (303)772-1177 SHEET ONE OF TWO. AUGUST 13, 199E LD3AL DISCR_PTION ( DITCH EASBIF T ) AN EASEMENT FOR DITCH PURPOSES, SAID EASEMENT BEING 30.00' FEEC WODE ARID IS LOCATED IN THE WEST ONE HALF OF SECTION 32 , TOWNSHIP 3 NORTH, RANGE 67 WEST, or THE WIH. P.M. , WELD COMITY, COLORADO, THE CENTERLINE OF SAID 30.00' FEET WIDE EASEMENT BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: COMMENCING AT A POINT ON THE WEST LINE CF SECTION 32, WHENCE THE SOUTHWEST CORNER OF SAID SECTION 32, BEARS SCUIH 00° 00' 00" WEST 3237.54' FEET; THENCE .WORTH 60° 57' 29" EAST 746. 27' FEET,TO A POIN11 ON THE SOUTH RIGHT OF WAY LINE OF COUNTY POAC N 28 3/4 ; THET;CE SOUTH 29 02' 31" EAST 15.00' FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 60° 57' 29" FAST 766.00 FEET AND TEPMTNATION OF SAID CENTERLINE OF EAS?ffNT. CERTIFICATE OF SURVEY I HEREBY CFATIFY THAT THE ABOVE DESCRIBED WAS PREPARE]) UNDER PTY DIRECT SUPETtVISION FROM THE RESULTS OF A SURVEY DONE BY ME. I FURTHER CERTIFY THAT 11W ABOVE DESCRIBED AND THE ACCO. I•a• ta u TE PLAN ARE TRUE AND ACCURATE TO THE BEST OF MY KO xr CSP SEE SHEET TWO OF TWO FOR SITE PLAN. /� %%40 mp •t /=ev.1e`.d de-PNe B - 27-Pc • 01/19/1994 22: 30 0000000001000 u. AE �;<:i;i..:::::u�;.:; <+. F^"E 115 t.�UHrrt WLNIIII_F'.Ihi 1d?.'.`0.!,-i11i-117' 1419 :' "_Y, 'L-i F. OE, SHUT 'iWO OF TWO. Srs /0l.Q.v. Fork_ 2e ' I • .0,MN 64VfeM6n/r 44P a a II 7E4MIv4711,44 • j I ZV�i I Vi 6 I JrAtt 1 f , I I Gsl A 1, EKiSr. Jv. 7N IS • p'fat" f Tm9. 1Y ,% scAGe WI re 54-c. 32 ®-i3- 94 tl .tl 7 3 ; ,'G 71s/. ri M • N Vm 111 i v 7e --- ,sLV CO Mc, sec. a2 . ran R47i✓, 0 fl4 19/1R91 2 -:il 00000000000 U. AL AAAAAA:AAAA;.. PAIIE 2 L. �unnl uC 'i UL In rdr ..]i7-11,-11i f Fin :, '_f'� i:7,1 F..If: limallialrime RONALD W. ADAMS, P.L.S. LAND SURVEYING 508 3t6 Avenue Lougrooat, CO 80501 Peger (303)651-8039 (303)772-1177 Fex (303)772-1177 art ONE OF TWO. AUGUST 13, 1996 LEGAL DESCRIPTION ( DITCH EASEMDIT ) AN EASEMENT FOR DI'iCH PURPOSES SAID EASEMENT BEING 30.CC' FEET WIDE AND IS LOCATED IN THE WEST ONE HALF OF SECTICN 32, TOWNSHIP 3 NORTH, RANGE 67 WEST OF THE 6TH. P.14. , WELD COUNTY, COLORA.DO, THE CENTRLINE OF SAID 30.00' WIDE EASEMENT BEING MORE PARTICULARLY DESCRIBED AS FCLIAWS: CCMMENCTNG AT A PODC ON THE WEST LINE CF SECTION 32 , WHENCE THE SOUTHWEST CORNER OF SAID SECTION 3? BEARS SCUM 00° 00' 30" WEST 3237.54' FEET: HENCE PK.m 60° 57' 29" EAST 894.41' FEET To A POINT ON THE SOUTH RIGHT or WAY LINE OF COUNTY RCAD A 26 3/4; TEI]ICE Sotmi 000 35' 43" WEST 34.50' TO THE TRUE POINT OF BEGINNING; THENCE CONTINUING SCLTH 00° 35' 43" WEST 1854.47' FEET; THENCE NORTH 50° 26' 40" EAST 132. 34' tk.ta TO A POINT L.h1ENCE THE SOUTHWEST CORNER CF SAID SECTION 32 , BEARS SOUTH 22° 44' 28" WIST 2241. 35' FEET AND TERMINATION Cr SAID CENTERI.itt OF CASEMNT. CERTIFICATE OF SURVEY I HEREBY CERTIFY THAT THE ABOVE DESCRIBED WAS PREPARED UNDER HY DIRECT SUPERVISION FROt1 T:IE RESULTS OF A SURVEY DO1ff 3Y . , FURTHER CERTIFY THAT THE ABOVE DFS-RIEED AND TIE ACCCtIPANY_NG 0i4 au , . TRUE AND ACCURATE TO HE BEST OF MY KNOWLEDGE AND 8'�:.�.y '�'0 �� V •:mot•' -rer, . lo SEE SHEET' TWO OF TWO FOR SITE PLAN. /� "2j. •OA' AEI//resa [.4.-n( e3 - 2 7- 94 04/1 9;1994 _. 30 000000000000 u. AE . .r ,:;. a:;:;. FACIE 0]: u �ft]g �I, .1 r.u., SHEET IWD OF TWO. N -1-irtindAti le.A.....19L ,_,,,,,,.......„}„..„.,/ .o/1G/y £.os 6.4tE.V t if ii ✓cv;AT Zb3l'� c&LvERT A r% a r i I1. i_ i WIC �- VI�' 11 �.10 ,, t &x/enoirc/a sy --1--- 2e' 3o° til V ' p00, /s /9 fietal rAi.►r/oA/ � , 7 ini I t h M N II Ne Scat E I le.1 i IPJ1 1t 4 � ��•141.1 der 8 ,e = DURABLE GENERAL POWER OF ATTORNEY I, GILBERT P. ACORD, of Weld County, Colorado, as principal, hereby appoint my ncice, LORETI'A RIIOADES, of Weld County, Colorado, my true and lawful attorney in fact, or agent. 1. Grant of Power. Except as expressly provided otherwise in this document, I grant to my agent full power and authority, in my name and for my benefit, to exercise or perform any act, power, duty, right or obligation whatsoever that I now have or may hereafter acquire, relating to any person, matter, transaction or property, real or personal, tangible or intangible, now owned or hereafter acquired by me, including, without limitation, the following specifically enumerated powers: 1.1 Collection and Payment. To request, demand, sue for, recover, collect, receive, and hold all sums of money, debts, dues, commercial paper, checks, drafts, accounts, deposits, legacies, bequests, devises, notes, interests, stock certificates, bonds, dividends, certificates of deposit, annuities, pension, profit sharing, retirement, social security, insurance and other contractual benefits and proceeds, all documents of title, all property, real or personal, tangible and intangible property and property rights, and all other demands whatsoever, liquidated or unliquidated, now owned or hereafter acquired by, or due, owing, payable or belonging to me, or in which I may have or may hcrcaftcr acquire an interest; to have, use and take all lawful means, and to sock all legal and equitable remedies and proceedings, in my name for the collection of the same; to forgive, adjust, soli, compromise or agree with respect to • the same; and to execute and deliver for me, on my behalf and in my name, all endorsements, releases, receipts or other sufficient discharges for the same. 1.2 Acquisition and Disposition. To acquire, purchase, exchange, option, sell, convey, mortgage, lease or in any manner deal in or with, real or personal property, tangible or intangible, or any interests therein on such terms and conditions as my agent deems proper. 1.3 Management. To maintain, repair, improve, invest, manage, insure, rent, lease, encumber and in any manner deal with any real or personal property, tangible or intangible, or any interest therein, that I now own or hereafter acquire, in my name and for my benefit, upon such terms and conditions as my agenty deems proper. 1.4 Banking. To make,sign, receive, endorse, assign and/or deliver checks, drafts, notes, securities or other orders for the payment of money; deposit and withdraw funds, acquire and redeem certificates of deposit, in banks, savings and loan associations and other institutions; and execute or release such deeds of trust or other security agreements as may be necessary or proper in the exercise of the rights and powers herein granted. 1.5 Motor Vehicles. To apply for certificates of title, and endorse and transfer • such titles, for any automobile, truck, pickup, van, motorcycle or other motor vehicle, and to represent in such transfer that the title to the motor vehicle is free and clear of all liens and encumbrances except those specifically set forth in the transfer. 1.6 Business Interests. To conduct or participate in any lawful business of whatever nature for me and in my name; execute partnership agreements and amendments thereto; incorporate, reorganize, merge, consolidate, recapitalize, sell, liquidate or dissolve any business; elect or employ officers, directors and agents; perform under any agreement for the sale of any business interest or the stock therein; exercise voting rights with respect to stock, either in person or by proxy; and exercise stock options. 1.7 'fax Matters. To prepare, sign and file joint or separate income tax returns or declarations of estimated tax for any year or years; prcparc, sign and file gift tax returns with respect to gifts made by me for any year or years; to consent to any gift and to utilize any gift-splitting provision or other tax election; and to prepare, sign and file any claims for refund of any tax; and to represent me or obtain representation for me in any tax audit. 1.8 Safe Deposit Boxes. To have access to any safe deposit box rented by me, wheresoever located and at any time or times, and to remove all or any part of the contents thereof, and to surrender or relinquish such safe deposit box. No institution in which such safe deposit box is located shall incur any liability to me or to my estate as a result of permitting my agent to exercise this power. 1.9 Medical Care. Subject to the same limitations imposed upon court appointed guardians contained in C.R.S. §15-14-312(1)(a), or a successor provision, to consent to, refuse, or withdraw consent to, or approve or disapprove on my behalf any medical or other professional care, counsel, treatment or service of or to me by a licensed or certified health care professional person or institution; and in making any decisions concerning my medical care, to be given access to information concerning my medical treatment, diagnosis and other medical information that may be relevant to making an informed decision. 1.10 Colorado Medical Treatment Decision Act. If I have executed a declaration under the Colorado Medical Treatment Decision Act, to submit the Declaration to my attending physicians and, if I am comatose and not in a jurisdiction where the Declaration is recognized, to transport me to a jurisdiction in which the Declaration will be recognized and to pursue any legal action necessary to force compliance with my Declaration. 1.11 Guardianship or Conservatorship. To act as guardian of my person or conservator of my estate and of my minor children, if any, should such action he required. 2 The foregoing enumeration of powers is not intended to, nor shall it limit or restrict the general powers hcrcin granted to my agent. I grant to my agent full power and authority to do all things necessary in exercising any of the powers herein granted, as fully as I could do if personally present, with full power of substitution or revocation. I hereby ratify and confirm all that my agent shall lawfully do or cause to be done by virtue of this power of attorney and the powers granted herein. 2. Reliance. No person or institution shall be required to inquire as to the circumstances of the issuance or use of any instrument signed in accordance with the foregoing authority, or to the application or disposition of such instrument, or the proceeds thereof. No person or institution who acts in reliance on representations of my agent or the authority granted to my agent shall incur any liability to me or to my estate as a result of permitting my agent to exercise any power granted herein. 3. Fiduciary Powers of Principal. Notwithstanding any other provision of this power of attorney, my agent shall have no rights or powers hereunder with respect to any act, power, duty, right or obligation, relating to any person, matter, transaction or property, owned by me or in my custody as a trustee, custodian, personal representative or in another fiduciary capacity. 3 4. Substitute Agent. If Loretta Rhoades ceases to act as my agent due to her death, disability or resignation, I appoint Herbert Acord of Longmont, Colorado, as my attorney in fact and agent. This power of attorney shall not be affected by disability of the principal. (See §15-14-501, C.K.S.) Dated March 4, 1994. /, Gil rb�l 6d-Cr) bert Acord, Principal STATE OF COLORADO ) ) ss COUNTY OF BOULDER ) The foregoing instrument was acknowledged before me this 4th day of March, 1994, by Gilbert P. Acord. Witness my hand and official seal. My commission expires 9/7-3 /q( d Notary Public mL\wI vAcoauuuit.roA • RECEIPT Received this day ? 7 /9 7 by the Weld County Clerk and Recorder, one copy of Owens Brothers Concrete Company, Colorado Mined Land Reclamation Board Regular 112 Permit application for the Del Camino Sand and Gravel Mine. 5�e€for eld County Clerk and Recorder Hello