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Home My WebLink About20203541 EXHIBIT C : SOILS REPORT Please see the attached Soils Report dated February 19 , 2019 . -� APPENDIX A 1/4.• HYDROGEOLOGIC AND Z � GEOTECHNICAL Z OC V 0 CHARACTERIZATION W a WREPORT Oc e W Pawnee Waste LLC 0 Weld County , Colorado Submitted to : Pawnee Waste LLC 155 E . Boardwalk Suite 300 Ft . Collins , CO 80525 LLI Omml Submitted by : Golder Associates Inc . i•aJ V 44 Union Boulevard , Suite 300 OLakewood , CO 80228 USA W Ci 0 July 23 , 2015 Project No . 1407882B Revision 1 - February 19 , 2016 A world cc capabilities Adelivered locally t - Golder r Associates Golder. Golder Associates and the GA globe design are trademarks of Golder Associates Corporation February 2016 Appendix A 1407882B Rev . 1 Table of Contents 1 . 0 INTRODUCTION 1 2 . 0 REGIONAL SETTING AND HYDROGEOLOGY 2 2 . 1 Physiography , Topography , and Soils 2 2 . 2 Geologic Framework and Hydrogeology 2 3 . 0 SITE INVESTIGATION 4 4 . 0 PHYSICAL AND HYDROGEOLOGICAL ASSESSMENT OF THE SITE 5 4 . 1 ° hysiography , Surface Water, and Soils 5 4 . 1 . 1 Wetland Assessment 5 4 . 1 . 2 Soils and Geotechnical Considerations 5 4 . 2 .Subsurface Conditions 6 4 . 2 . 1 Stratum 1 — Eolian Silt 7 4 . 2 . 2 Stratum 2 — Sandy Silt , Silty Clay , and Residuum 8 4 . 2 . 3 Stratum 3 — Sand and Silty Sand Lenses 8 4 . 3 Hydrogeology 9 4 . 3 . 1 Vadose Zone/Confining Unit 9 4 . 3 . 2 Uppermost Saturated Zone 9 4 . 3 . 3 Groundwater Movement 10 4 . 3 . 4 Groundwater Quality 10 5 . 0 SUMMARY AND CONCLUSIONS 11 6 . 0 REFERENCES 12 ilisis14 = Golder I \14\1407882b\0400\0403 edop reel \appendix a\1407882b app a pawnee waste hydrogeo chara rpt rey1 19feb16 docx ® Associates 7V-S. Appendix A February 2016 1407882B Rev . 1 List of Tables Table A- 1 Field and Lab Properties of Potential Construction Material Table A-2 Field and Lab Properties of Eolian Silt Table A-3 Field Properties of Silty Clay , Clay and Residuum Table A-4 Field Properties of Sand and Silty Sand Table A-5 Summary of Soil Data Table A-6 Summary of Flexible-Wall Permeability Test Results — Remolded Samples Table A-7 Summary of Flexible-Wall Permeability Test Results — Undisturbed Samples List of Figures Figure A- 1 Plan View, Borehole Locations , and Geologic Cross Sections Figure A-2 Geologic Cross-Sections A-A' and B -B ' Figure A-3 Geologic Cross-Section C-C ' and D -D ' Figure A-4 Geologic Cross-Section E - E ' Figure A-5 Potentiometric Surface Map List of Appendices Appendix A- 1 USDA- NRCS Soil Survey Information Appendix A-2 Hydrogeologic and Geotechnical Field Investigation Report Appendix A-3 Laboratory Soil Test Results Appendix A-3- 1 Index Testing Results Appendix A-3-2 Permeability Testing Results Appendix A-3-3 Consolidation Testing Results - Golder \14\1407882b\040010403 edop reel\appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx (61_48' Associates February 2016 Appendix A 1407882B Rev . 1 1 , Q INTRODUCTION Golder Associates Inc . ( Golder) was retained by Pawnee Waste LLC ( Pawnee) to perform a hydrogeologic and geotechnical characterization for a new (" greenfield " ) E & P landfill ( Landfill ) . As shown in Figure A- 1 , the proposed Use by Special Review ( USR ) boundary for the Landfill facility is approximately 240 acres ( Site) , with a Landfilling area of approximately 74 acres . The Site is located approximately 4 miles southeast of the town of Grover in Weld County . Colorado . This report describes the regional and site-specific geologic and hydrogeologic information collected during the subsurface investigations Golder performed on behalf of Pawnee . These investigations were completed in accordance with the Colorado Department of Public Health and Environment ( CDPHE ) 6 CCR 1007 -2 , Part 1 regulations . _ Ica= Golder \1411407882b\C400\0403 edop reel \appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 18feb16 docx tne Associates T! TIL AppendixAFebruary 2016 1407882B Rev . 1 2 2 . 0 REGIONAL SETTING AND HYDROGEOLOGY The following section provides the regional setting and general area conditions related to the Site . 2 . 1 Physiography , Topography , and Soils The Site is located in the Colorado Piedmont section of the Great Plains Physiographic Province . The topography of the area is generally composed of plains used mainly for agriculture and grazing ; the Site topography dips gently from the northeast to the southwest into tributaries of the South Platte River. Slopes are generally less than 10 % , and elevations range from approximately 5 , 050 to 5 , 100 feet above mean sea level (AMSL ) within the sub-basin around the Site . The drainage sub-basin is composed of approximately 2 . 5 square miles . The groundwater and surface water related to the Site discharge to the south and west . Refer to Appendix B -3 , Figure B -3-2 for the topography and historic drainage basins . The climate of Weld County is semi -arid with an average annual precipitation in the northeastern part of the county of approximately 13 . 9 inches . The average annual evaporation in the northeastern part of the county is approximately 43 . 1 inches . The United States Department of Agriculture — National Resource Conservation Service ( USDA-NRCS ) designates the area soils as Kim -Mitchell complex and Stoneham fine sandy loam , composed primarily of silt and fine sandy loams . The parent materials for soils within this soil association are calcareous loamy alluvial deposits . The USDA-NRCS Soil Report generated for the Site is presented in Appendix A- 1 . 2 . 2 Geologic Framework and Hydrogeology The Site is located within the Denver-Julesburg ( DJ ) Basin in northeastern Colorado . The DJ Basin is a north -south structural basin that covers 70 , 000 square miles of northeast Colorado , southeast Wyoming , and northwest Nebraska . The basin formed during the Laramide Orogeny and is characterized by its asymmetry with gentle east flank and faulted . steeply dipping west flank . The basin contains sedimentary units dating from the Cambrian Period (oldest) to the Tertiary Period (youngest) . The thickest part of the DJ Basin occurs north of Denver , where it is approximately 13 , 000 feet thick . Approximately 70% of the sedimentary rock in the DJ Basin is composed of sandstone , shale , and limestone units of Cretaceous age ( Higley and Cox 2002 ) . Tweto ( 1979 ) depicts the Site as underlain by the Tertiary-age White River Formation consisting primarily of claystone , siltstone , and sandstone commonly containing volcanic ash . The primary aquifer in the vicinity is the High Plains Aquifer system including the Ogallala , the Arikaree , and the Brule formations . These formations of the High Plains Aquifer are not well defined in the vicinity of the Site . However the surficial aquifer along the South Platte River Valley directly overlies the High Plains Aquifer system and is commonly used for irrigation , stock , and domestic use in the immediate vicinity of the Site ( Robson and Banta 1995 ) . fj ! Golder \14\1407882b\0400\0403 edop rev1appendix a\1407882b app a pawnee waste hydrogeo chara rpt rev1 19feb16 docx ssociates February 2016 Appendix A 1407882B Rev . 1 3 The Tertiary-age Ogallala , Arikaree , and Brule formations are overlain by Quaternary-age alluvial deposits where the South Platte River Valley surficial aquifer can be found . The surficial aquifer is often present in confined or semi -confined conditions . Regionally , silt and clay deposits provide a level of groundwater protection to the surficial aquifer. The local and regional groundwater flow is to the west and southwest toward Jackson Draw and the South Platte River. The piezometric level is about 5 , 020 feet AMSL or 50 feet below the existing ground surface at Site . _ = Golder Associates \14\1407882b\0400\0403 edop reel \appendix a\1407882b app a pawnee waste hydrogeo chara rpt rey1 19feb16 docx wVr--: = February 2016 Appendix A 1407882B Rev . 1 — 4 3 . 0 SITE INVESTIGATION A hydrogeologic and geotechnical site investigation was performed by Golder between September 2 and October 27 , 2014 . A detailed description of the site investigation program , including the drilling and sampling methodology used , is presented in Appendix A-2 — Hydrogeologic and Geotechnical Field Investigation Report . A- -t- Golder \14\1407882b\0400\0403 edop reel \appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx ® Associates February 2016 Appendix A 1407882B Rev . 1 5 4 . 0 PHYSICAL AND HYDROGEOLOGICAL ASSESSMENT OF THE SITE The following section contains the information used to prepare a preliminary assessment of existing hydrogeological conditions and assess the adequacy of the proposed groundwater monitoring network . A hydrogeologic conceptual model for the Site and information regarding the adequacy of the present monitoring network is also presented within this section . 4 . 1 Physiography , Surface Water, and Soils The Site topography dips gently from the northeast to the southwest into tributaries of the South Platte River. Slopes are generally less than 10% to the south and west towards the Jackson Draw watercourse . Surface water in this watercourse , as well as shallow groundwater, flow and drain eventually to the South Platte River. 4. 1 . 1 Wetland Assessment The Site is not located in a swamp , marsh . bog . or similar area that could be defined as a wetland according 70 the United States Fish and Wildlife Service ( USFWS ) National Wetland Inventory Wetlands Mapper ( USFWS 2014 ) . No wetlands or wet areas were identified within the proposed Site boundaries on the USGS 7 . 5-minute quadrangle topographic map . Hydrology , hydrophytic vegetation , and hydric soils are the criteria that determine the existence of a wetland . The Site does not have well -defined surface water features , as shown in the topographical survey , showing runoff routing . Hydric soils are not apparent at Site . Reconnaissance by Golder personnel also confirmed that there is no vegetation on the Site that would typically be adapted for life in saturated soil conditions . 4. 1 . 2 Soils and Geotechnical Considerations The surface soils at the Site include Kim- Mitchell Complex and Stoneham fine sandy loam , composed primarily cf silt and fine sandy loams . The parent materials for soils within this soil association are calcareous loamy alluvial deposits . Any topsoil present will be removed prior to placement of waste at the Landfill . 4 . 1 . 2 . 1 Suitability of On - site Soils for Construction Eolian silts ( loess) are prone to consolidation when submerged and a load is applied . A previous soils study performed by GROUND Engineering ( GROUND Engineering 2012 ) on an adjacent property to the west of the proposed Site indicated that consolidation of up to 7 % was measured in lab tests . A consolidat on test performed by Golder on an undisturbed sample collected from this stratum ( 15-17 feet below ground surface [ft bgs] from BH -2014- 14 ) indicated consolidation up to 10 % measured in the lab test . Based on Golder' s experience and engineering judgment , incorporating the estimated consolidation into the design should obviate the need for extensive engineering controls such as large-scale CAT Golder \14\1407882b\0400\0403 edop rey1 \appendix a11407882b app a pawnee waste hydrogen chara rpt rey1 19feb16 docx # Associates -iti --. • Appendix A _ February 2016 6 1407882B Rev . 1 over-excavation and recompaction . The consolidation potential of the near-surface soils is not expected to adversely impact the acceptability of the site as a landfill . Sand and silty sand deposits within the upper 20 feet of the loess stratum ( Stratum 1 , defined in Section 4 . 2 below) likely could be used as potential material during construction . A summary of the field and lab properties is presented in Table A- 1 . Table A -1 : Field and Lab Properties of Potential Construction Material USCS Group Liquid Fines Content(' ) Remolded Permeability(2) Symbol Limit ( % Passing No . 200) ( Lab) ( LL) (cm/s ) ML 36 — 45 6-31 2 . 7 x 10-7- 3 . 3 x 10-6 Avg . 39 Avg . 17 Avg . 1 . 6 x 10-6 Notes: 1 ) Fines content range of sand and silty sand samples collected from within Stratum 1 2 ) Samples were remolded at 96 % of the standard Proctor dry density and at optimum moisture content. 4 . 2 Subsurface Conditions The hydrogeologic and geotechnical investigation performed in September and October 2014 is summarized below . Based on the available borehole data , the Site geology was divided into three simplified and mappable strata . These strata were distinguished based on grain size and color differences . The subsurface soil conditions found in the boreholes have been categorized into the following three indistinct strata : • Stratum 1 — Eolian accumulations of silt , overlying : • Stratum 2 — Sandy silt , silty clay , and residuum weathered from siltstone/claystone ; and • Stratum 3 — Localized lenses of sand and silty sand . Descriptions and index properties of these strata are detailed in the following subsections . Four hydrogeologic cross sections were generated across the Site to graphically present these geologic strata and the hydrogeologic conditions underlying the proposed footprint . The locations of these cross sections are shown in Figure A- 1 and are summarized below: • Cross Section A-A' ( Figure A-2 ) — Aligned west to east across the northern half of the proposed footprint , and encompassing investigation locations PZ- 1 , BH -2014-02 , PZ-2 , BH -2014-03 , and MW- 1 ; • Cross Section B -B ' ( Figure A-2 ) — Aligned west to east across the southern half of the Site , and encompassing investigation locations MW-3 , BH -2014-09 . BH -2014- 16 , and B H -2014-04 : Cr : Golder \14\1407882b\0400\0403 edop revl\appendix a11407882b app a pawnee waste hydrogeo chara rpt revl l9feb16 docx Associates February 2016 Appendix A 1407882B Rev . 1 7 • Cross Section C-C ' ( Figure A-3 ) — Aligned north to south across the western half of the proposed footprint , and encompassing investigation locations BH-2014-02 , PZ-3 , BH -2014-08 . and MW-3 ; • Cross Section D-D ' ( Figure A-3 ) — Aligned north to south across the eastern half of the proposed footprint , and encompassing investigation locations MW- 1 , BH -2014- 10 , PZ-4 , and BH -2014-04 ; and • Cross Section E -E ' ( Figure A-4 ) — Aligned west to east across the southern half of the proposed footprint through the proposed leachate collection sumps , and encompassing investigation locations BH -2014 -05 , PZ-3 , BH -2014- 11 , BH -2014- 13 , and BH -2014- 10 . 4. 2. 1 Stratum 1 - Eolian Silt This stratum consists of a dry . stiff to hard , eolian silt (classified as ML according to the Unified Soil Classification System [USCSJ ) unit that generally extends from below the topsoil to depths ranging from 8 feet to as much as 25 feet across the Site . The base of Stratum 1 is generally flat or slightly dipping to the west and south . This is consistent with the surface topography across the Site . A summary of the index property testing results from select soil samples from this stratum is presented in Table A-2 , below. N -values from standard penetration tests (ASTM D1586 ) in this unit ranged from 7 to 50 , with an average N -value of approximately 17 , correlating to a relative density of very stiff. Table A -2 : Field and Lab Properties of Eolian Silt USCS Group N - Relative Moisture Liquid Plasticity Fines Content Symbol Content Limit ( Lab) Values Density (oho ) ( LL ) Index ( PI ) ( % Passing No . 200) ML 7 — 50 Stiff to 12 — 19 36 — 45 7 — 15 62 — 93 Avg . 17 hard Avg . 15 Avg . 39 Avg . 10 Avg . 82 Permeability tests were performed on undisturbed silt samples collected from BH-2014- 13 at depths of 15 to 15 . 35 ft bgs and 16 . 05 to 16 . 40 ft bgs . The average hydraulic conductivity of this stratum based on lab testing of the two undisturbed samples is 6 . 8 x 105 cm/s . The average hydraulic conductivity for recompacted soils in this stratum based on lab testing of remolded samples from BH-2013-02 , BH-2013-04 , BH-2013-08 . and BH-2013- 10 is approximately 1 . 6 x 10-6 cm/s , as shown in the recompacted permeability tests (Table A-6 ) . One consolidation test on an undisturbed sample collected from this stratum ( 15-17 ft bgs from BH -2014- 14) indicated :hat the unit is normally consolidated with an estimated compression index (Cc) of 0 . 24 and an estimated coefficient of consolidation (Cu) of 0 . 01 centimeters squared per second (cm2/sec) . The one-dimensional consolidation testing results are provided in Appendix A-3-3 . talGolder \14\1407882b\C400\0403 edop reel\appendix a\1407882b app a pawnee waste hydrogeo chara rpt rey1 19feb16 docx ® Associates ritt _ - -r February 2016 Appendix A8 1407882B Rev . 1 4. 2. 2 Stratum 2 - Sandy Silt, Silty Clay, and Residuum This stratum comprises the majority of the subsurface materials found at the Site and consists of a moist , hard unit of sandy silt ( ML ) , silty clay ( CL) . and residuum from siltstone and claystone . The unit extends from below the surficial eolian silt through the maximum boring termination depth of 85 ft bgs . Discontinuous isolated pockets/lenses of sand were encountered across the Site within this stratum . These sand pockets/lenses are characterized as a separate stratum as described in Section 4 . 2 . 3 below . The first occurrence of groundwater at the Site is within fissured zones of Stratum 2 with the exception of MW-2014-03 . discussed in Section 4 . 2 . 3 . A summary of the field properties of the silty clay and residuum is presented in Table A-3 below. The consistency of the materials was hard ( i . e . , SPT N-value greater than 30) . often causing refusal of the split spoon sampler. No samples of the silty clay or residuum were submitted for geotechnical index testing . Table A -3 : Field Properties of Sandy Silt, Silty Clay , and Residuum USCS Group Moisture Content Symbols N -Values Consistency ( % ) ( Field ) ML , CL 30-80 + Hard Approx. 40 Avg . 55 Permeability tests were performed on undisturbed silty clay samples collected from BH-2014- 13 at depths of 40 . 4 to 40 . 7 ft bgs and 41 . 4 to 41 . 8 ft bgs . The average hydraulic conductivity of this stratum based on the lab testing of the two undisturbed samples is 5 . 4 x 10-4 centimeters per second (cm/s ) . 4. 2. 3 Stratum 3 - Sand and Silty Sand Lenses As noted above , discontinuous isolated pockets/lenses of sand were found across the Site at varying depths . The occurrence of these sand lenses is almost exclusively limited to Stratum 2 , with the exception of a single thin lens present in Stratum 1 at BH -2014- 15 ( PZ-4 ) . Saturation of Stratum 3 sand and silty sand was observed in MW-2014-03 , BH -2014-01 , and BH -2014-03 . Field properties are presented in Table A-4 , below . Table A-4 : Field and Lab Properties of Sand and Silty Sand USCS Group Relative Moisture Fines Content Symbols N -Values Density Content ( % Passing No . 200 ( Field ) ( /o ) SP , SW, SM . 25 -84 Very 6 -31 6- 16 % Avg . 51 Dense Avg . 17 . T1. \14\1407882b0400\0403 edop rev1appendix a\1407882b app a pawnee waste hydrogeo chara rpt rev1 19feb16 docx Associates February 2016 Appendix A 1407882B Rev . 1 9 4 . 3 Hydrogeology The hydrogeology beneath the Site has been simplified into two hydrogeologic zones : the vadose zone/confining unit and the uppermost saturated unit . For the purposes of this section , these zones are classified Dy their hydrogeologic properties and may include various geologic strata . 4. 3. 1 Vadose Zone/Confining Unit The near- surface unsaturated deposits ( i . e . , the vadose/confining unit) range from 49 to more than 70 feet thick . The vadose zone is composed of eolian silt and sandy silt overlying silty clay , discontinuous sand lenses and residuum from siltstone and claystone . The vertical hydraulic conductivity of the eolian silt and sandy silt has been laboratory tested on undisturbed soils . The vertical hydraulic conductivity of undisturbed eolian silt from BH -2014 - 13 ( 15 to 16 . 4-foot depth ) averaged 6 . 8 x 10 -5 cm/sec . The vertical hydraulic conductivity of undisturbed sandy silt from BH -2014 - 13 (40 . 3 to 41 . 7-foot depth ) averaged 5 . 4 x 10-4 cm/sec . This zone includes Strata 1 , 2 , and 3 described in Section 4 . 2 : acts as an unsaturated flow barrier to the uppermost saturated zone from the proposed Landfill : and is considered an aquitard . 4. 3. 2 Uppermost Saturated Zone The uppermost saturated zone consists of the first saturated interval found below the vadose zone/conf ning unit . The uppermost saturated zone is composed primarily of fissured silty clay . with three instances of saturated sand observed in BH -2014 -01 , BH -2014 -03 , and MW-2014-03 . Groundwater movement through the saturated zone is dominated by the fissured nature of the clayey material and thin saturated sand lenses . The uppermost saturated zone is continuous across the Site with a potentiometric surface at an elevation of approximately 5 . 020 feet AMSL . The uppermost saturated zone is considered as confined because water levels in each borehole stabilized at an elevation above the first occurrence of water observed during the drilling and sampling program . Stabilized water levels ranged from approximately 1 foot to approximately 14 feet above the first occurrence of water. Cross sections shown in Figures A-2 , A-3 , A-4 , and A-5 depict the borings and potentiometric surface within the uppermost saturated zone . The horizontal hydraulic conductivity estimated from the hydraulic (slug ) testing ranged from 1 . 5 x 10 2 cm/sec (43 ft/day) to 6 . 0 x 10 -5 cm/sec ( 0 . 17 ft/day ) with an average of 1 . 8 x 10-3 cm/sec ( 5 . 1 ft/day) . A summary of the slug test results is presented in Table A-2 -4 in Appendix A-2 . OA Golder \14\1407882b\C400\0403 edop rey1\appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx r Associates February 2016 Appendix A 1407882B Rev . 1 10 4. 3. 3 Groundwater Movement Based on the groundwater levels taken in October 2014 . groundwater generally flows to the west at a gradient of 0 . 0004 ft/ft . Hydraulic conductivity of the upper portion of the saturated zone ranges from 0 . 17 to 43 ft/day . The effective porosity of the sediment was estimated at 20% . The following modified Darcy equation was used to estimate groundwater velocity : Ki - Tie where : V = True velocity (ft/day) K = Hydraulic conductivity (ft/day) i = Hydraulic gradient (ft/ft) ne = Porosity C/0 / 100 ) Based on the highest hydraulic conductivity obtained from the hydraulic testing , the maximum groundwater velocity is estimated at 0 . 086 ft/day . 4. 3. 4 Groundwater Quality Background groundwater quality data collection commenced in January 2015 . A baseline groundwater monitoring report will be prepared and submitted to the CDPHE and Weld County upon completion of the 8 to 10 required background sampling and analysis events . Golder \14\1407882b\0400\0403 edop revl \appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx # Associates 4 Appendix A _ .rir February 2016 1407882B Rev . 1 11 5 . 0 SUMMARY AND CONCLUSIONS Based on the findings contained within this report , the following conclusions can be made : • The majority of the Landfill site lies over eolian silt of varying thickness . The natural materials will provide sufficient groundwater protection . • The uppermost saturated zone is continuous beneath the Site , is confined with a flow direction from east to west at a gradient of 0 . 0004 ft/ft, and has a potentiometric surface of approximately 5 . 020 feet AMSL . The confined designation is supported by the rise in the piezometric level above the base of the confining unit ( i . e . , the unsaturated portion of Stratum 2 ) after penetrating the fissured and sandy saturated zones present in Strata 2 and 3 , respectively . • Subsurface conditions are relatively consistent from east to west and north to south through the Site characterized by two main lithologic units : a surficial eolian silt and sandy silt ( Stratum 1 ) overlying a sandy silt/clayey silt/clay/residuum unit ( Stratum 2 ) . These units comprise the hydrogeologic confining unit (aquitard ) . • Groundwater chemistry has not yet been determined at the Site . Background groundwater quality data collection commenced in January 2015 . A baseline groundwater monitoring report will be prepared and submitted to the CDPHE and Weld County upon completion of the 8 to 10 required background sampling and analysis events . Field parameters were measured during development of the new monitoring wells . Results of these tests indicate that pH values ranged from 7 . 9 to 8 . 1 standard units , specific conductivity values ranged from 345 to 380 microsiemens per centimeter ( µS/cm ) , and temperature ranged from 12 . 9 to 15 . 0 ° C . ■ The average hydraulic conductivity of Stratum 1 eolian silt based on lab testing of the two undisturbed samples is 6 . 8 x 105 cm/s . The average hydraulic conductivity of recompacted soil samples of Stratum 1 eolian silt is 1 . 6 x 10-6 cm/s . The average hydraulic conductivity of sandy silt from Stratum 2 based on lab testing of the two undisturbed samples is 5 . 4 x 10 4 CM/S . ■ No beneficial uses of downgradient groundwater have been identified . The closest residence exists southeast of the Site within the adjacent catchment basin . Current and projected land use in the area is mainly agricultural , with scattered residences mostly associated with local farms . ■ The newly installed groundwater monitoring network will be sufficient to monitor groundwater at the Site . An environmental monitoring plan will be developed for the Site that will outline the monitoring frequency , constituent list , quality control , and statistical analysis procedures . _ ..... ® 7 Golder I \14\1407882b\C400\0403 edop reel\appendix a\1407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx A Associates Februa 2016 Appendix A 12 1407882B Rev . 1 - �-- ry 6 . 0 REFERENCES GROUND Engineering . 2012 . Subsurface Exploration Program & Geotechnical Recommendations , Pawnee Project Improvements . Grover. CO . Higley , D . K . ; R . R . Charpentier, T. A . Cook , T . R . Klett , R . M . Pollastro , and J . W. Schmoker. 2002 . Petroleum systems and assessment of undiscovered oil and gas in the Denver Basin Province , Colorado , Kansas , Nebraska , South Dakota , and Wyoming - USGS Province 29 : US Geological Survey Digital Data Series DDS-69 -P . Chapter 2 , 1 p . Robson , S . G . and E . R . Banta . 1995 . Groundwater Atlas of the United States . "Arizona , Colorado . New Mexico , Utah , HA730 -C . " Available online : http : //pubs . usgs . gov/ha/ha730/ch c/ Accessed November 10 , 2014 . United States Fish and Wildlife Service ( USFWS ) . 2014 . National Wetlands Inventory : Wetlands Mapper. United States Geological Survey ( USGS ) . 2013 . Grover South Quadrangle , Colorado-Weld Co . 7 . 5-Minute Series . a tt ' Golder I 114\1407882b\040010403 edop reel\appendix a11407882b app a pawnee waste hydrogeo chara rpt reel 19feb16 docx Associates July 2015 TABLE A-5 1407882B PAWNEE WASTE E & P LANDFILL FACILITY SUMMARY OF SOIL DATA Grain Size Distribution Atterberg Moisture/Density Relationship Sample Delivered Limits Standard Proctor Additional Tests Sample Boring/Pit Depth USCS Soil Moisture % Finer % Finer % Finer Specific - Comments Type Number (ft) Classification I ( %) , LL PL PI 3/4" a #4 a #200 Gravity Dry Density ( pcf) Moisture (`)/0) (See Notes) Pail BH-08 5-25 ML 20. 8 42 27 15 100 99 62 -- 90 . 6 27 .4 PERM Pail BH-02 4-20 ML 16 . 1 40 28 12 100 100 85 -- 93 . 3 25. 3 PERM Pail BH- 10 5-25 ML 16 . 7 41 31 10 100 100 93 -- 90 . 1 26. 7 PERM i L , , , . Pail BH-04 5-25 ML 11 . 4 36 25 11 100 100 90 -- 93 . 8 23 . 8 PERM . Bag BH-03 69-74 SP 40. 3 -- -- -- 100 100 17 -- -- -- Bag I BH-04 4-9 ML 12 . 0 38 31 7 100 100 87 -- -- -- Bag BH-04 14- 19 ML 11 . 7 NP NP NP 100 100 62 -- -- -- Bag BH-04 54-59 SM 42 . 0 -- -- -- 100 100 45 -- -- -- Bag BH-01 14- 15 SP 6 . 3 -- -- -- 100 100 13 -- -- -- a Bag BH-01 59 . 5-60 . 0 SP 16 . 1 -- -- -- 100 100 6 -- -- -- . Bag BH-01 53-54 SM 25 . 1 -- -- -- 100 100 25 -- -- -- , , I , IS Bag BH-03 9- 14 SM 10. 6 32 28 4 98 86 31 -- -- -- , . I Ili i I i Bag I BH-08 4-9 ML 13 . 6 37 28 9 100 100 75 -- -- -- . i , Bag BH-09 4-9 ML 12 . 9 37 28 9 100 100 76 -- -- -- ■ a a . I I • Bag BH-02 4-9 ML 18 . 9 45 34 11 100 100 80 -- -- -- Bag BH- 10 9- 14 ML 12 . 4 38 31 7 100 100 92 -- -- -- Notes : LL = Liquid Limit T = Triaxial Test PL = Plastic Limit U = Unconfined Compression Test PI = Plastic Index C = Consolidation Test SL = Shrinkage Limit DS = Direct Shear Test UW = Unit Weight PERM = Permeability * Oversize corrected value per ASTM D4718 Golder I \14\14078828\0400\0401 EDOP DFT\Appendix A\Table A-5 Soil Summary xlsx fast Associates July 2015 TABLE A-6 1407882B PAWNEE WASTE E & P LANDFILL FACILITY SUMMARY OF FLEXIBLE -WALL PERMEABILITY TEST RESULTS - RECOMPACTED SAMPLES Sample Average Sample Sample Sample Initial Dry Maximum Dry Initial Optimum Effective Back Hydraulic Sample Boring Depth Length(' ) Diameter( ' ) Density Density Compaction Moisture Moisture Stress Pressure Conductivity Number Number ( m ) ( cm ) ( cm ) ( Ibf/ft3) ( lbf/ft3) ( 0/31 i( %) (%) I ( kPa) I ( kPa) Gradient ( cm/s) -- BH-08 5-25 9 . 53 7 . 38 87 . 2 90 . 6 96 . 2 27 . 4 27 .4 34 480 6 2 . 0E-06 . -- BH-02 4-20 9 . 58 7 . 39 90 . 1 93. 3 96 . 6 25 . 2 25 . 3 34 480 12 2 . 7E-07 -- BH- 10 5-25 9 . 51 7 . 37 86 . 8 90. 1 96 . 3 27 . 5 26 . 7 34 480 8 8 . 7E-07 . -- BH-04 5-25 9 . 54 7 . 40 90 . 2 93 . 8 96 . 2 24 . 0 23 . 8 34 480 10 3 . 3E-06 Note : 1 ) Dimensions are from final measurements A Golder I \141140788281040010401 EDOP DFT\Appendix A\Table A-6 Perm Summary-Remold xlsx v Associates July 2015 TABLE A-7 1407882B PAWNEE WASTE E & P LANDFILL FACILITY SUMMARY OF FLEXIBLE -WALL HYDRAULIC CONDUCTIVITY TEST RESULTS - UNDISTURBED SAMPLES Sample Sample Sample Initial Initial Effective Back Average Hydraulic Boring Sample Depth Lengthw Diameter ' ) Dry Density Moisture Stress Pressure Conductivity Number Number (ft) I ( cm ) ( cm ) ( Ibf/ft3 ) ( % ) i ( kPa) I ( kPa ) Gradient ( cm/s ) BH - 13 BH - 13 15- 17 16 . 05- 16 . 40 7 . 553 4 . 931 78 . 7 18 . 2 34 550 22 2 . 6E- 05 BH - 13 BH - 13 40-42 40 . 35-40 . 70 7 . 155 4 . 904 63 . 9 38 . 2 34 280 3 5 . 8E-04 BH - 13 BH - 13 40-42 41 . 4-41 . 75 7 . 471 4 . 904 69 . 4 37 . 1 I 34 410 3 5 . 0E- 04 BH - 13 BH - 13 15- 17 15 . 0- 15 . 35 7 . 361 4 . 909 77 . 7 11 . 9 34 550 13 1 . 1E- 04 Note : 1 ) Dimensions are from final measurements T\ \14\1407882B\0400\0401 EDOP DFAppendix A\Table A-7 Perm Summary-Inplace xlsx ®f "tGolder Associates m m m m m m m m m W W W W W w W w w la laREVS IS '51W w pq {p/t pQ (p/1 (p/1 8A ya.O O O O O � OO�. � IL• LEGEND IS PROPOSED-MW-06 ( I v EXISTING TOPOGRAPHY (SEE NOTE 1) I A 3 l ...------. PROPOSED USE BY SPECIAL REVIEW(USR) BOUNDARY (240 ACRE S1 N 1 552 000 ,( _ T N 1 552 000 A B 9 MW-2014.01 l PROPOSED LIMIT OF E&P LANDFILL AREA A-2 A-2 ' BH 2O14 06 BH-2014-02 ; PROPOSED DETENTION POND / 4 BH-2014-03 { B14-2014-077 e t I• - - - EXISTING UNDERGROUND CABLE PZ-1 PZ-2 iW M -2014-02A I EXISTING NATURAL GAS PIPELINE I EXISTING WATER LINE EXISTING UNDERGROUND CABLE l (16.6 FT EASEMENT) • 614.2014-01 • BOREHOLE LOCATION N 1 551 500 4 • 1 + ± I 1 4- I ± • +� N 1551 500 PZ 4 PIEZOMETER LOCATION I 1 ,• MW-2014-03 REV B PROPOSED E&P LANDFILL AREA I {l} GROUNDWATER MONITORING WELL I (APPROXIMATELY 74 ACRES) : - • I • PROPOSED-MW-06 PROPOSED GROUNDWATER MONITORING WELL • PROPOSED-MW-05 \ BH-2014-10 sr - '• , 614.2014-17 8H-2014-11 BH-2014-13 I I PZ-3 A GEOLOGIC CROSS SECTION ' •,•,• cc:r; J I- A E4 { } } ! — I I A-2 1 551 000 T I 1 PROPOSED I DETENTION I NOTES POND • I 1 EXISTING GROUND TOPOGRAPHY PROVIDED BY CLARK LAND SURVEYING. INC FROM I MW-2014-04 ; FIELD SURVEY PERFORMED IN OCTOBER 2014 I N 1 550 500 I • \ • �BH-ZQA401 1 Z-4{ } H-2014-1 IN 1 550 500 t I f 1.3I4 BW2014-08 - 44 BH-2014-14 —I EXISTING NATURAL GAS PIPELINES I (40 TO 46 FT TOTAL EASEMENT - ' • APPROXIMATELY 10 FT ONI I EACH SIDE OF PIPE) /J/ EXISTING WATER LINE I I I N 1 550 000 C 1 550 000 .H-2014-09 BH-2014-16 BH-2014-04 I a MW-2014-03 � I I , I , lit- 1.7................_4_...;....:-.20.17.0.2.-..-----. W-2014 02 I ' 549 500 in m rn W W W W W W w W W W W lad y1 W W w w W NV 8 (p(� pq 8 §V 8V ypV1 § O O O O O § § 0 200 400 SCALE FEET CLIENT ,•Hq..,.;f PAWNEE WASTE LLC PAWNEE WASTE E&P LANDFILL WELD COUNTY, COLORADO CONSULTANT DENVER OFFICE BOREHOLE LOCATION 8 GEOLOGIC CROSS SECTION 44 UNION BLVD. STE 300 F B 2016-02.19 ADDRESS COPHE TECHNICAL EDOP COMMENTS DATED JANUARY 26, 2016 CAJ CE TB JAR CKB LAKEWOOD. COLORADO- , A 2015-07-16 ISSUED FOR C0PHE EDOP SUBMITTAL USA CETB CE TB JMP DLO ItIPS (.11 (!03) 960-0540 PROJECT No G:,+:7IiUt kr. 1 :�i 5 ' r�t;RE _ k,:. IYYY MM DU :)t-_: �RIPPCf. PREPARED DESIGN REVIEW APPROVED vwwvgoldeTeom 14078828 0001 B A-1 WEST EAST 5110 ,110 5100 GROUND SURFACE 5100 - GROUND SURFACE ELEV • 5091 3 FT MW-2014-01 5090 3 FT MW.2014-02A GROUND SURFACE EPRO PROJECTED 35 FT PROJECTED 174 FT - - -5090 - GROUND SURFACE BH-2014-07 ELEV • 5077 1 FT BH-2014-03 - - ------ sow (BH-2014-06) GROUND SURFACE ELEV. a 5072-5 FT PZ-2 PROJECTED 24 FT _ _ ___ __ _ _ _ - --- - - - -- - -- - -- - - -- BH-2014-02 ELEV • 5070 9 FT PROJECTED 13 FT - ji0� .._ _ _ ___ _ _ _ _ __ _ _ _ __ _ __ _ _ __ _ _ _ __ __ _ _ ____ _ 5070x - - -5070 F 0- - - - - - - - - - _ - - - _ - - l - - - - - - - 5080 + 4 , 5050 LL; F F 5040 6040 to I111 W 5030 \�\\ 6030 5020 z 0 V 5020 0 - -- V 5010 t0-s0 ro-roc 5iZ Y K■8.0E-4 CIWS (SEE NOTE 4) 6010 TO•r%0 L TT) •H0 5000- TO.74 0 6000 4990 4990 4980 4980 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 14.00 15+00 18+00 17.00 18+00 19+00 20+00 21+00 22.00 23+00 24+00 25+00 26+00 27+00 27.67 SCALE 1- - ioa _A _ GEOLOGIC CROSS-SECTION A - A' VERT SCALE 1 5 A-2 NORTH SOUTH 6090 - 5080 GROUND SURFACE BH-2014-12 GROUND SURFACE BH-2014-02 ELEV • 5070 3 FT6080 GROUND SURFACE ELEV • 5072 5 FT PZ-3 PROJECTED 3 FT BI-4-2014-08 ELEV = 50869 FT MW2014-03 GROUND SURFACE 5070- N _ _ PROJECTED 5 FT ELEV = 5085 0 FT (VIII - - - PROJECTED 14 FT '5070 5060 • F 5050^ - _. - __ __ __ - - - - - - - _ _ - - •_ - - - 5060 _ - - X5050 z ILI 5040 6040mt J W 5030 K•1 3E-2 CM/S 6030 5020 T 0 ; (SEE NOTE 4) �� — s _5020 5010 ;0-801:6 \ TO•l000 To•s�ao Q_ 6010 Tn •Si 00 6000 5000 0+00 1.00 2+00 3+00 4.00 5+00 6.00 7.00 8.00 9+00 10+00 11+00 12+00 13.00 14+00 15+00 18.00 17.00 18.00 19.00 20+00 21 .00 22+00 23+00 24+00 25+00 26+00 scALE I- • 10a GEOLOGIC CROSS-SECTION B - B' VERT SCALE 1 5 LEGEND MONITORING WELL/ PIEZOMETER COMPLETION NOTES - - SAND PACK 1 DATA CONCERNING THE VARIOUS STRATA HAVE BEEN OBTAINED AT LOCATIONS OF BOREHOLE, PIEZOMETER, AND GROUND WATER MONITORING WELLS THE WELL GRADED SAND J STRATUM 1 EOLIAN SILT WELL SCREEN STRATIGRAPHY BETWEEN BOREHOLES AND WELLS HAS BEEN INFERRED AND GEOLOGIC UNIT BOUNDARIES ARE APPROXIMATE AS INDICATED BY DASHED I BASE PLUG UNES ACTUAL UNIT BOUNDARIES MAY VARY FROM THOSE SHOWN. PARTICULARLY IN THE VICINITY OF BOREHOLES AND WELLS THAT HAVE BEEN PROJECTED POORLY GRADED SAND STRATUM 2 SANDY SILT. ONTO THECROSS-SECTION LINES SILTY CLAY.AND RESIDUUM -. -- 2 TOTAL DEPTHS (TD)ARE EXPRESSED IN FEET BELOW GROUND SURFACE STRATUM 3 SAND AND SILTY SAND SILTY SAND 3 GROUNDWATER SURFACE INFERRED FROM DEPTH TO WATER MEASURED IN THE GROUNDWATER MONITORING WELLS, PIEZOMETERS, AND BOREHOLES SILT 4 THE HYDRAULIC CONDUCTIVITY (K)VALUES SHOWN ON THE CROSS-SECTION REPRESENT THE AVERAGE K OF THE FORMATION ISOLATED BY THE SCREENED INTERVALS ONLY THE K VALUE HAS BEEN DERIVED FROM THE HVORSLEV ANALYSIS OF SLUG TEST DATA COLLECTED IN OCTOBER 2014 V POTENT1OMETRIC SURFACE (SEE NOTES 5.8.AND 7) (DASHED WHERE INFERRED) 5 THE APPROXIMATE GROUNDWATER POTENTIOMETRIC SURFACE SHOWN ON THE CROSS-SECTION IS BASED ON THE SITE-WNDE GROUNDWATER CONTOURS CLAYEY SILT V FIRST ENCOUNTERED WATER LEVEL AND MAY NOT ALIGN WTH THE MEASURED WATER LEVELS DUE TO PROJECTION FROM THE SECTION LINE % ` (DASHED WHERE INFERRED) LOW PLASTICITY CLAY 6 GROUNDWATER SURFACE INTERPRETED FROM MONITORING WELL. PIEZOMETER.AND BOREHOLE WATER LEVEL MEASUREMENTS COLLECTED IN OCTOBER 2014 cut N c PROJECT PAWNEE WASTE LLC PAWNEE WASTE E&P LANDFILL WELD COUNTY, COLORADO _ __ ___ - _ - __ - - - _ _ _ _ ___ _ ___ _ _ - CONSULTANT DENVER OFFICE TITLE 44 UNION BLVD. STE 300 GEOLOGIC CROSS-SECTIONS A - A' AND B - B' LAKEWOOD, COLORADO ' A 2015-07-16 ISSUED FOR CDPHE EDOP SUBMITTAL CETB CETB -IMP DLO •Aites UNITED STATES l 11 (303) 980 0540 PROJECT No ,.., 44 !R(); K.:. 2 i,t 5 r'L URE ~by OolderT�m <. . rYi r MM DD DESCRIPTION PREPARED DESIGN REVIEW APPROVED 1407882B Q002 A A-2 0 WEST EAST 5090 509C. GROUND SURFACE BH-2014.18 GROUND SURFACE GROUND SURFACE BH-2014-04 5080 ELEV • 5067 9 FT ELEV a 5074 1 FT ELEV PROJECTE 9 2 FT 2 FT 8M-2014-09 PROJECTED 9 FT PROJECTED 5 FT _ _ _ ,5pgc ' - GROUND SURFACE 5070 5070 MW-2014-03 ELEV • 5085.0 FT - -- - - -- - - - - - - - - - - - -- - - - -- - - - - - - -- - - -- - - - - - - - - - 508a- - _ _HIIII - - - - _. -- - 5060 � � - II' - - - — _" - — - - _ - _ -- ` - - - - - - 650 R p5040 ,5040 F W 6030 5030 W El Ka 1 3E-2 CNVS (SEE NOTE 4)\\ _ _ t s .�•�, - 6020 TO.500 5010. _` ,_- 5010 TD-MO TO-NO To_ iso 5000 6000 4990- —4990 0+00 1.00 2.00 3+00 4+00 5+00 8.00 7+00 8.00 9.00 10.00 11.00 12+00 13+00 14.00 15.00 18+00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 24.85 SCALE r- toa C NORTH GEOLOGIC CROSS-SECTION C - C' VERT SCALE 1:5 A-3 SOUTH 5110 5110 5100 - 6100 MW-2014-01 GROUND SURFACE GROUND SURFACE ELEV . 5O91 3 FT GROUND SURFACE GROUND SURFACE -- 5090 -- • BH-2014-10 ELEV. • 5063 6 F T BH-2014-15 - - - - - - _ _ _ _ - PROJECTED 54 FT PZ 4 ELEV 5061 5 FT ELEV 5079 2 FT 6090 ""."1114:.:17---4“--- _ _ _ _ _ PROJECTED 38 FT PROJECTED 6 FT BM-2014 04 -- -- -- ---- - - - 5080 - - - - - - - - - - - - - - - - - -- - - - - - - - - - - -- - - 6080 _ _ _ 6070 _P.5060 - ��) r+OBO 5040 5030 5020 5020 - - -- - -- - -- - - - -- - - - -- - - -- - - - - -- -- - - -- -- - ---- - - - - - - - - - - - - - - - - - - - -- -- - - ---- - -------- 5070 5010 (SEE NOTE 4) �� 1p-1}0 5010 To-no TO.7S0 6000 TO-MO 5000 4990- 4990 0+00 1.00 2+00 3.00 4.00 5.00 6.00 7+00 6+00 9+00 10.00 11.00 12+00 13.00 14+00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23+00 23.77 SCALE V - ioa D GEOLOGIC CROSS-SECTION D_ D' VERT SCALE 1 5 A-3 LEGEND MONITORING WELL/PIEZOMETER COMPLETION NOTES I - -- _ SAND PACK WELL GRADED SAND I I STRATUM 1 EOLIAN SILT0 : WELL SCREEN 1 DATA CONCERNING THE VARIOUS STRATA HAVE BEEN OBTAINED AT LOCATIONS OF BOREHOLE. PIEZOMETER.AND GROUND WATER MONITORING WELLS THE _ _ I STRATIGRAPHY BETWEEN BOREHOLES AND WELLS HAS BEEN INFERRED AND GEOLOGIC UNIT BOUNDARIES ARE APPROXIMATE AS INDICATED BY DASHED BASE PLUG LINES ACTUAL UNIT BOUNDARIES MAY VARY FROM THOSE SHOWN, PARTICULARLY IN THE VICINITY OF BOREHOLES AND WELLS THAT HAVE BEEN PROJECTED POORLY GRADED SAND STRATUM 2 SANDY SILT, SILTY CLAY, AND RESIDUUM ONTO THE CROSS-SECTION LINES ---- STRATUM 3 SAND AND 2 TOTAL DEPTHS (TD)ARE EXPRESSED IN FEET BELOW GROUND SURFACE SILTY SAND SILTY SAND 3 GROUNDWATER SURFACE INFERRED FROM DEPTH TO WATER MEASURED IN THE GROUNDWATER MONITORING WELLS. PIEZOMETERS. AND BOREHOLES SILT 4 THE HYDRAULIC CONDUCTIVITY (K)VALUES SHOWN ON THE CROSS-SECTION REPRESENT THE AVERAGE K OF THE FORMATION ISOLATED BY THE SCREENED - S POTENTIOMETRIC SURFACE (SEE NOTES 5,8, AND 7) INTERVALS ONLY THE K VALUE HAS BEEN DERIVED FROM THE HVORSLEV ANALYSIS OF SLUG TEST DATA COLLECTED IN OCTOBER 2014 (DASHED WHERE INFERRED) CLAYEY SILT V FIRST ENCOUNTERED WATER LEVEL 5. THE APPROXIMATE GROUNDWATER POTENTIOMETRIC SURFACE SHOWN ON THE CROSS-SECTION IS BASED ON THE SITE-WNDE GROUNDWATER CONTOURS k (DASHED WHERE INFERRED) AND MAY NOT ALIGN WNTH THE MEASURED WATER LEVELS DUE TO PROJECTION FROM THE SECTION LINE LOW PLASTICITY CLAY 6 GROUNDWATER SURFACE INTERPRETED FROM MONITORING WELL. PIEZOMETER,AND BOREHOLE WATER LEVEL MEASUREMENTS COLLECTED IN OCTOBER \\\��l\\\ 2014 .1:L•t-r41 PROJECT `Lt PAWNEE WASTE LLC PAWNEE WASTE E&P LANDFILL `w_ WELD COUNTY, COLORADO0 -_;al:,Ul 1.-. . I I !LDENVER UNION GEOLOGIC CROSS-SECTIONS C - C' AND D - D' 44 LAKE WOOD, COLORADO 300 ` A 2015-07-16 ISSUED FOR CDPHE EDOP SUBMITTAL CETB CETB JMP DLO (PS UNITED STATES 1.1) (303)480 0510 PROJECT N') CONTROL Re; 3 01 5 FIGURE • .'RE:PARED DESIGN RE'Jis . . “PFROVED www.goldercom 1407882B Q002 A A-3 -o WEST EAST 5120 5110 GROUND SURFACE — ELEVATION • 5068 8 FT sl00 PROJECTED 255 FT 5090 ELEVATION SURFACE ELEVATION= 5083.6 FT 5060 GROUND SURFACE GROUND UND SURFACE 8 FT PROJECTED 285 FT N-2014-10 GROUND SURFACE BM-2014 12 BH-2014.13 ELEVATION • 5077 FT BM-2O14 11 PROJECTED 291 FT ELEVATION = 5070 3 FT PROJECTED 284 FT BH-2014.05 (PZ-3] PROJECTED 281 FT -- 507P __._ . ��n, 5060 — LL _ Z 50 0 > so4ag , EL W _----------- 5030' t 5020Ir _V t ; V. 1 TO =SD 0 59 5010 TD = 0 5000 TO=MO TO • !U0 4990 --- _ - 0.00 1.00 2.00 3.00 4.00 5.00 5.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.001. SCALE 1- • 100'© GEOLOGIC CROSS-SECTION E - E' VERT SCALE 1-5 LEGEND NOTES 1 DATA CONCERNING THE VARIOUS STRATA HAVE BEEN OBTAINED AT LOCATIONS OF WELL GRADED SAND I STRATUM 1 EOLIAN SILT BOREHOLE. PIEZOMETER, AND GROUND WATER MONITORING WELLS THE _ _ I STRATIGRAPHY BETWEEN BOREHOLES AND WELLS HAS BEEN INFERRED AND GEOLOGIC UNIT BOUNDARIES ARE APPROXIMATE AS INDICATED BY DASHED LINES. ACTUAL UNIT POORLY GRADED SAND STRATUM 2 SANDY SILT, BOUNDARIES MAY VARY FROM THOSE SHOWN, PARTICULARLY IN THE VICINITY OF SILTY CLAY, AND RESIDUUM BOREHOLES AND WELLS THAT HAVE BEEN PROJECTED ONTO THE CROSS-SECTION LINES. SILTY SAND STRATUM 3 SAND AND 2 TOTAL DEPTHS (TD) ARE EXPRESSED IN FEET BELOW GROUND SURFACE SILTY SAND 3 GROUNDWATER SURFACE INFERRED FROM DEPTH TO WATER MEASURED IN THE GROUNDWATER MONITORING WELLS, PIEZOMETERS. AND BOREHOLES Z POTENTIOMETRIC SURFACE (SEE NOTES 5,6, AND 7) SILT (DASHED WHERE INFERRED) 4 THE HYDRAULIC CONDUCTIVITY (K)VALUES SHOWN ON THE CROSS-SECTION • V FIRST ENCOUNTERED WATER LEVEL REPRESENT THE AVERAGE K OF THE FORMATION ISOLATED BY THE SCREENED CLAYEY SILT (DASHED WHERE INFERRED) INTERVALS ONLY THE K VALUE HAS BEEN DERIVED FROM THE HVORSLEV ANALYSIS OF SLUG TEST DATA COLLECTED IN OCTOBER 2014 i w. \\\� MONITORING WELL/ PIEZOMETER COMPLETION 5 THE APPROXIMATE GROUNDWATER POTENTIOMETRIC SURFACE SHOWN ON THE \ LOW PLASTICITY CLAY SAND PACK CROSS-SECTION IS BASED ON THE SITE-WDE GROUNDWATER CONTOURS AND MAY NOT a M I ALIGN WITH THE MEASURED WATER LEVELS DUE TO PROJECTION FROM THE SECTION WELL SCREEN LINE w BASE PLUG 6 GROUNDWATER SURFACE INTERPRETED FROM MONITORING WELL, PIEZOMETER.AND 7 BOREHOLE WATER LEVEL MEASUREMENTS COLLECTED IN OCTOBER 2014 w .. K. 7 GROUNDWATER SURFACE OFFSET FROM GROUNDWATER LEVEL INDICATORS DUE TOLi PROJECTED DISTANCES BETWEEN BOREHOLES AND SECTION W T I- I • 3 a 3 r z v. C L'r t,T ='RG,;E C T d PAWNEE WASTE LLC PAWNEE WASTE E&P LANDFILL W WELD COUNTY, COLORADO CONSULTANT n DENVER OFFICE _ 44 UNION BLVD, sTE 300 GEOLOGIC CROSS-SECTIONS E - E' - LAKEWOOD. COLORADO .- A 2015-07-16 ISSUED FOR COPHE EDOP SUBMITTAL _ ALB ALB SAP MAY _ eASIS UNITED STATES ; 1.11 (303) 980 0540 PROJECT No CONTROL Re. 4 n1 5 FIGURE wwwQolder.com 1407882B O002 A A-4 H. TI.. YYYY MM-DD DESCRIPON PREPARED DESIGN REVIEW APPROVED - 0 m m m m m m m m m u td la tJ u la u tJ u V V 1.4 te REV 8 Lea u 8 {q/� 8N (p/1 (5 pq -4 O O O O O ' O O .._..� .�.._.�.._.._.._.. .._.._.._.._.._..�...�.._.._.._.._.-it LEGEND PROPOSED MW-06 rr EXISTING TOPOGRAPHY (SEE NOTE 1) i \ • • i I' I N 1 552 000 \ I • -•990 POTENDOMETRIC SURFACE 41 { } MW-2014-01 { I N 1 552 000 -•--••--•- PROPOSED USE BY SPECIA. REVIEW(USR) BOUNDARY (240 ACRES) I l PROPOSED LIMIT OF EAP LANDFILL AREA N • BH-2014-02 4 BH-2014-07 BH-2014.03 BM 2014 08 I PROPOSED DETENTION POND PZ•t PZ-2 BH-2014-0t I Mw-2014O2A I BOREHOLE LOCATION • k 05 itt PIEZOMETER LOCATION vl" uSi% OT •7T 2 1 Rals\\\• I MW2014-03 N 1 551 500 } I + 1 1 }y � i N 1551 500 opo 41A SEDW-06C'ROUNOVWTER MONITORING WELL I REV B �' * PROPOSED GROUNDWATER MONITORING WELL ' - PROPOSED HIP LANDFILL AREA / (APPROXIMATELY 74 ACRES) •• NOTES PROPOSE I -05* BIi-2014 11 BH 2O14t3 • Bn-2014-1 • 1 EXISTING GROUND TOPOGRAPHY PROVIDED BY CLARK LAND SURVEYING. INC FROM • BH-20 0 It: BH-2014-12 FIELD SURVEY PERFORMED IN OCTOBER 2014 PZJ I2 GROUNDWATER ELEVATIONS MEASURED ON OCTOBER 27. 2014 N 1 551 000 I ! + + 4 -4- + 1 I I N 1551 000 PROPOSED • I DETENTION POND ` I 1I I ea -201444 i / GBH-2014-01 } PZ 2014-15 IN 1 550500 N 1 550 500 I �_ I " 7 -1 , BH-2014-14 I 11. Sy I R I I . I I i I • I I`7 1550 000 N , 550 000 1_ • - -}- t i- 4• l { MW-2014-03 • BH-2014-09 • BH-2014-18 4- BM-2014-04 / I W ' I / • 1 W • W 0 ._. Ncs MW-2014-02 3 ? N 1 549 500 N 1 549 500 . m rn rn 44m —Irn k I'" t_ "' W W W u td W iJ W u V ± u W W u W W u V V V I § § Y. 0 200 400 SCALE FEET ix 2_TENT irhJif_ l- I PAWNEE WASTE LLC PAWNEE WASTE E&P LANDFILL WELD COUNTY, COLORADO a . • CONSUL TAN f III. I DENVER OFFICE POTENTIOMETRIC SURFACE MAP . 44 UPON BLVD, STE 300 _ s B 2016-02.19 ADORE SS COPHE TECHNICAL EDOP COMMENTS DATED JANUARY 28. 2018 CAJ CETB JAR CKB LAKEWOOO,COLORADO - - A 2015-07.18 ISSUED FOR COPHE EDOP SUBMITTAL CETB CETB SAP MAY •AIes USA (303) 980 0540 P4 I RO. R 5 of 5 FIGURE • rvrwvgolder.com H:, . YYYYAW-DU DE SCRIP tIG.'. PREPARED DESIGN REVIEW APPROVED 1407882B Q004 B A-5 za APPENDIX A-1 USDA-NRCS SOIL SURVEY INFORMATION USDA United States A product of the National Custom Soil Resource __________ Department of Cooperative Soil Survey . Agriculture a joint effort of the United Report for \ RCS States Department of Agriculture and other VVeWeldo u n Federal agencies . State 3( , Natural agencies including the Resources Agricultural Experiment o o ra o o ern Conservation Stations , and local Service participants Part -4. . .seci,_ 4 . . 4 - r. .i....warstwasa_aatfreasedannafr ' .1 W. sit 4I. z i- . : . 4 ,vi dPgliteiteeffe•edr.- I . •R .. y 1, •i .otteiriM • 0 ii s. $ ., d°. '_ • • i • P ' li C , • - 1 . . e a ti 4:13. . fi k • • • .16 it 71 • 1 \,461,4 . . . . 14 .}. .. • 1 r ' •P • E - s -•a. - -r - • " - ••• . j t Y ' i 1,' • , _ C• N • 1,4 �.is ��• I • Pi • • 7k • 1 1. , . _1:‘1V _. _ '- - _ _ _._- - - --„'- - >- - - -•_•i - ..1; • * a / • • 0 8 . 000 ft - , 4_ November 10 . 2014 Preface Soil surveys contain information that affects land use planning in survey areas . They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas . Soil surveys are designed for many different users , including farmers , ranchers . foresters , agronomists , urban planners . community officials , engineers , developers . builders , and home buyers . Also , conservationists . teachers , students , and specialists in recreation , waste disposal , and pollution control can use the surveys to help them understand , protect . or enhance the environment . Various land use regulations of Federal . State . and local governments may impose special restrictions on land use or land treatment . Soil surveys identify soil properties that are used in making various land use or land treatment decisions . The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses . The landowner or user is responsible for identifying and complying with existing laws and regulations . Although soil survey information can be used for general farm , local . and wider area planning . onsite investigation is needed to supplement this information in some cases . Examples include soil quality assessments ( http : //www. nrcs . usda . gov/wps/portal/ n res/main/soils/health/) and certain conservation and engineering applications . For more detailed information , contact your local USDA Service Center ( http : // offices . sc. egov . usda . gov/locator/app ? agency= nrcs) or your NRCS State Soil Scientist ( http : //www. nres . usda . gov/wps/portal/nres/detail/soils/contactus/? cid = nrcs142p2_053951 ) . Great differences in soil properties can occur within short distances . Some soils are seasonally wet or subject to flooding . Some are too unstable to be used as a foundation for buildings or roads . Clayey or wet soils are poorly suited to use as septic tank absorption fields . A high water table makes a soil poorly suited to basements or u nderground installations . The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies , State agencies including the Agricultural Experiment Stations , and local agencies . The Natural Resources Conservation Service ( NRCS ) has leadership for the Federal part of the National Cooperative Soil Survey . Information about soils is updated periodically . Updated information is available through the NRCS Web Soil Survey , the site for official soil survey information . The U . S . Department of Agriculture ( USDA) prohibits discrimination in all its programs and activities on the basis of race . color, national origin , age . disability , and where applicable . sex . marital status , familial status , parental status .. religion , sexual o rientation , genetic information , political beliefs , reprisal , or because all or a part of an individual ' s income is derived from any public assistance program . ( Not all prohibited bases apply to all programs . ) Persons with disabilities who require alternative means 2 for communication of program information(Braille, large print, audiotape, etc)should contact USDA's TARGET Center at(202) 720-2600 (voice and TDD) To file a complaint of discrimination,write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S W,Washington, D C 20250-9410 or call (800) 795-3272 (voice)or(202)720-6382 (TDD) USDA is an equal opportunity provider and employer 3 Contents Preface 2 How Soil Surveys Are Made 5 Soil Map 7 Soil Map (Pawnee Buttes) 8 Legend 9 Map Unit Legend (Pawnee Buttes) 10 Map Unit Descriptions (Pawnee Buttes) 10 Weld County, Colorado, Northern Part 12 31—Kim-Mitchell complex, 0 to 6 percent slopes 12 61—Stoneham fine sandy loam, 0 to 6 percent slopes 13 Soil Information for All Uses 15 Soil Properties and Qualities 15 Soil Qualities and Features 15 Parent Material Name (Pawnee Buttes) 15 References 19 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses Soil scientists observed the steepness, length, and shape of the slopes,the general pattern of drainage,the kinds of crops and native plants, and the kinds of bedrock They observed and described many soil profiles A soil profile is the sequence of natural layers, or horizons, in a soil The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity Currently,soils are mapped according to the boundaries of major land resource areas (MLRAs) MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate,water resources, soils, biological resources, and land uses (USDA, 2006) Soil survey areas typically consist of parts of one or more MLRA The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform,a soil scientist develops a concept,or model,of how they were formed Thus, during mapping,this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape Commonly, individual soils on the landscape merge into one another as their characteristics gradually change To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils They can observe only a limited number of soil profiles Nevertheless,these observations, supplemented by an understanding of the soil-vegetation-landscape relationship,are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries Soil scientists recorded the characteristics of the soil profiles that they studied They noted soil color,texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes(units) Taxonomic classes are concepts Each taxonomic class has a set of soil characteristics with precisely defined limits The classes are used as a basis for comparison to classify soils systematically Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile After the soil scientists classified and named the soils in the survey area,they compared the 5 Custom Soil Resource Report individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research The objective of soil mapping is not to delineate pure map unit components,the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions Some components may be highly contrasting to the other components of the map unit The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas Soil scientists make many field observations in the process of producing a soil map The frequency of observation is dependent upon several factors, Including scale of mapping, intensity of mapping, design of map units, complexity of the landscape,and experience of the soil scientist Observations are made to test and refine the soil- landscape model and predictions and to verify the classification of the soils at specific locations Once the soil-landscape model Is refined, a significantly smaller number of measurements of individual soil properties are made and recorded These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand,silt, clay, salt,and other components Properties of each soil typically vary from one point to another across the landscape Observations for map unit components are aggregated to develop ranges of characteristics for the components The aggregated values are presented Direct measurements do not exist for every property presented for every map unit component Values for some properties are estimated from combinations of other properties While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs Data are assembled from other sources, such as research information, production records, and field experience of specialists For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity Soil conditions are predictable over long periods of time, but they are not predictable from year to year For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date After soil scientists located and identified the significant natural bodies of soil in the survey area,they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit Aerial photographs show trees,buildings,fields, roads, and rivers, all of which help in locating boundaries accurately 6 Soil Map The soil map section includes the soil map for the defined area of interest,a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map Also presented are various metadata about data used to produce the map, and a description of each soil map unit 7 Custom Soil Resource Report is,M Soil Map ( Pawnee Buttes ) En aN CV o ° S S 570800 570900 571000 571100 571200 57130C 571400 571500 571600 571700 571800 571900 572000 572100 572200 40° 50' 31" N a :� :�•' :`) I q 5"• •' I I �► lam. 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N Meters S •� 0 100 200 400 600 ••-1 Feet i\I 0 300 600 1200 1800 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 8 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest (AOI) ggi Spoil Area The soil surveys that comprise your AOI were mapped at 1 :24 , 000 . Area of Interest (AOI) Stony Spot Soils Very Stony Spot Warning : Soil Map may not be valid at this scale . co,Soil Map Unit Polygons Wet Spot Enlargement of maps beyond the scale of mapping can cause , ft" r Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil line Other PP g © Soil Map Unit Points placement. The maps do not show the small areas of contrasting Special Line Features soils that could have been shown at a more detailed scale . Special Point Features Blowout Water Features Streams and Canals Please rely on the bar scale on each map sheet for map Borrow Pit measurements . Transportation x Clay Spot ., Rails Source of Map : Natural Resources Conservation Service Closed Depression as. Interstate Highways Web Soil Survey URL : http ://websoilsurvey. nrcs . usda .gov Gravel Pit Coordinate System: Web Mercator ( EPSG : 3857) US Routes Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator Ct Landfill Local Roads projection , which preserves direction and shape but distorts distance and area . A projection that preserves area , such as the Lava Flow Background Albers equal-area conic projection , should be used if more accurate Marsh or swamp at Aerial Photography calculations of distance or area are required . *. Mine or Quarry This product is generated from the USDA-NRCS certified data as of O Miscellaneous Water the version date(s) listed below. Perennial Water Soil Survey Area : Weld County , Colorado , Northern Part v Rock Outcrop Survey Area Data : Version 10 , Sep 23 , 2014 4. Saline Spot Soil map units are labeled (as space allows) for map scales 1 : 50 . 000 .` Spot Sandy or larger. .s. Severely Eroded Spot Date(s) aerial images were photographed : Apr 22 . 2011 —Oct 19 , 0 Sinkhole 2011 Slide or Slip The orthophoto or other base map on which the soil lines were oaf Sodic Spot compiled and digitized probably differs from the background imagery displayed on these maps . As a result , some minor shifting of map unit boundaries may be evident. - 9 Custom Soil Resource Report Map Unit Legend (Pawnee Buttes) Weld County,Colorado,Northern Part(CO617) Map Umt Symbol = Map Unit Name , Acres in AOI = --- Percent of AOl _ 31 Kim-Mitchell complex,0 to 6 140 4 55 9% percent slopes 61 Stoneham fine sandy loam,0 to 110 9 44 1% 6 percent slopes Totals for Area of Interest 251 4 100 0% Map Unit Descriptions (Pawnee Buttes) The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas A map unit is identified and named according to the taxonomic classification of the dominant soils Within a taxonomic class there are precisely defined limits for the properties of the soils On the landscape, however,the soils are natural phenomena, and they have the characteristic variability of all natural phenomena Thus,the range of some observed properties may extend beyond the limits defined for a taxonomic class Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes Consequently,every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management These are called noncontrasting, or similar, components They may or may not be mentioned In a particular map unit description Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management These are called contrasting,or dissimilar,components They generally are in small areas and could not be mapped separately because of the scale used Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements The delineation of such segments on the map provides sufficient information for the development of resource plans If 10 Custom Soil Resource Report intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas An identifying symbol precedes the map unit name in the map unit descriptions Each description includes general facts about the unit and gives important soil properties and qualities Soils that have profiles that are almost alike make up a soil senes Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition,thickness, and arrangement Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use On the basis of such differences, a soil series is divided into soil phases Most of the areas shown on the detailed soil maps are phases of soil series The name of a soil phase commonly indicates a feature that affects use or management For example,Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series Some map units are made up of two or more major soils or miscellaneous areas These map units are complexes, associations, or undifferentiated groups A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas Alpha-Beta complex, 0 to 6 percent slopes, is an example An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar Alpha- Beta association, 0 to 2 percent slopes, is an example An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them Alpha and Beta soils, 0 to 2 percent slopes, is an example Some surveys include miscellaneous areas Such areas have little or no soil material and support little or no vegetation Rock outcrop is an example 11 Custom Soil Resource Report Weld County, Colorado, Northern Part 31—Kim-Mitchell complex, 0 to 6 percent slopes Map Unit Setting National map unit symbol 35zh Elevation 3,500 to 6,500 feet Mean annual precipitation 11 to 17 inches Mean annual air temperature 46 to 54 degrees F Frost-free period 120 to 160 days Farmland classification Farmland of statewide importance Map Unit Composition Kim and similar soils 45 percent Mitchell and similar soils 40 percent Minor components 15 percent Estimates are based on observations, descriptions, and transects of the mapunit Description of Kim Setting Landform Alluvial fans, plains Down-slope shape Linear Across-slope shape Linear Parent matenal Calcareous loamy alluvium Typical profile H1 -0to3inches loam H2-3 to 7 inches clay loam H3- 7 to 60 inches loam Properties and qualities Slope 0 to 6 percent Depth to restrictive feature More than 80 inches Natural drainage class Well drained Runoff class Low Capacity of the most limiting layer to transmit water(Ksat) Moderately high (0 20 to 0 60 in/hr) Depth to water table More than 80 inches Frequency of flooding None Frequency of ponding None Calcium carbonate, maximum in profile 15 percent Salinity, maximum in profile Nonsaline to very slightly saline(0 0 to 4 0 mmhos/cm) Available water storage in profile High (about 9 7 inches) Interpretive groups Land capability classification (irrigated) 4e Land capability classification (nonirngated) 4e Hydrologic Soil Group C Ecological site Loamy plains (R067BY002CO) Description of Mitchell Setting Landform Alluvial fans, plains Down-slope shape Linear 12 Custom Soil Resource Report Across-slope shape Linear Parent material Calcareous loamy alluvium Typical profile H1 -0 to 7 inches silt loam H2- 7 to 60 inches silt loam Properties and qualities Slope 0 to 6 percent Depth to restrictive feature More than 80 inches Natural drainage class Well drained Runoff class Very low Capacity of the most limiting layer to transmit water(Ksat) Moderately high to high (0 57 to 5 95 in/hr) Depth to water table More than 80 inches Frequency of flooding None Frequency of ponding None Calcium carbonate, maximum in profile 15 percent Available water storage in profile High (about 10 8 inches) Interpretive groups Land capability classification (irrigated) 4e Land capability classification (none ngated) 4e Hydrologic Soil Group A Ecological site Siltstone plains (R067BY009CO) Minor Components Keota Percent of map unit 5 percent Haverson Percent of map unit 5 percent Thedalund Percent of map unit 5 percent 61—Stoneham fine sandy loam, 0 to 6 percent slopes Map Unit Setting National map unit symbol 360k Elevation 4,000 to 6,500 feet Mean annual precipitation 12 to 16 inches Mean annual air temperature 48 to 52 degrees F Frost-free period 130 to 170 days Farmland classification Farmland of statewide importance Map Unit Composition Stoneham and similar sods 90 percent Minor components 10 percent Estimates are based on observations, descnptions, and transects of the mapunit 13 Custom Soil Resource Report Description of Stoneham Setting Landform Alluvial fans, plains Down-slope shape Linear Across-slope shape Linear Parent matenal Calcareous loamy alluvium Typical profile H1 -0 to 5 inches fine sandy loam H2-5 to 8 inches clay loam H3-8 to 14 inches loam H4- 14 to 60 inches gravelly sandy loam, sandy loam H4- 14 to 60 inches Properties and qualities Slope 0 to 6 percent Depth to restrictive feature More than 80 inches Natural drainage class Well drained Runoff class Low Capacity of the most limiting layer to transmit water(Ksat) Moderately high to high (0 60 to 2 00 in/hr) Depth to water table More than 80 inches Frequency of flooding None Frequency of ponding None Calcium carbonate, maximum in profile 15 percent Salinity, maximum in profile Nonsaline(0 0 to 2 0 mmhos/cm) Available water storage in profile High (about 11 2 inches) Interpretive groups Land capability classification (irrigated) 4e Land capability classification (nonirngated) 4e Hydrologic Soil Group B Ecological site Loamy plains (R067BY002CO) Minor Components Mitchell Percent of map unit 5 percent Kim Percent of map unit 5 percent 14 Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of Interest A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components This aggregation process is defined for each property or quality Soil Qualities and Features Soil qualities are behavior and performance attributes that are not directly measured, but are inferred from observations of dynamic conditions and from soil properties Example soil qualities include natural drainage, and frost action Soil features are attributes that are not directly part of the soil Example soil features include slope and depth to restrictive layer These features can greatly impact the use and management of the soil Parent Material Name (Pawnee Buttes) Parent material name is a term for the general physical, chemical, and mineralogical composition of the unconsolidated material,mineral or organic,in which the soil forms Mode of deposition and/or weathering may be implied by the name The soil surveyor uses parent material to develop a model used for soil mapping Soil scientists and specialists in other disciplines use parent material to help interpret soil boundaries and project performance of the material below the soil Many soil properties relate to parent material Among these properties are proportions of sand, silt, and clay, chemical content, bulk density, structure, and the kinds and amounts of rock fragments These properties affect interpretations and may be criteria used to separate soil series Soil properties and landscape information may imply the kind of parent material For each soil in the database, one or more parent materials may be identified One is marked as the representative or most commonly occurring The representative parent material name is presented here 15 Custom Soil Resource Report M Map-Parent Material Name ( Pawnee Buttes) M CT 63 ° ° C C 570800 570900 571000 571100 571200 571300 571400 571500 571600 5/1 /00 5/1800 5/1900 572000 572100 572200 40° 50' 31 N I I 4. } 40° 50' 31" N it § ' • r �-i{H l.• � • . f � . ^r; .sY - tom• • - ' - _ Sfr - a ,• .-. -s-tP..^_.�, ,, - t .= • I ••• • 1. �•� ham.. L'••+yiyy4 ct- • +,_ 4 in . 44." County Road 118 § N '• i % In Cr i . • � . IN in 1, - . it • 8 o 4 0 Y; N 8 p in ri Cr ;: in Cf 61 g N Cr • - .. - . 8 • ,• • � Qp N Q L-1 f cO��• na O 4 ... 0 IN in : • �o N Lfl Cr N co in rNi O• L ) Cr ' ii• • N. • .in 8 N _ e •r . • 7�' r C , ^• _ , Ct • s 1 in , ,. • R . 14 •t •le t, L _! i r, If \•• 1 N 40° 49' 59" N cr . mit' }.I '. ' `+ . % �. • • . [ic /' I I I •, I : N ° 40 49 59 N NI- 570800 570900 571000 571100 571200 571300 571400 571500 571600 571700 571800 571900 572000 572100 572200 3 3 A in Map Scale: 1 :6,930 if printed on A landscape ( 11" x 8.5") sheet in "' • N . Meters 0 O 0 100 200 400 600 O -- Feet A ___ 0 300 600 1200 1800 Map projection: Web Mercator Corner coordinates: WGS84 Edge bcs: UTM Zone 13N WGS84 16 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest (AOI) The soil surveys that comprise your AOI were mapped at 1 :24 , 000 . Area of Interest (AOI) Soils Warning : Soil Map may not be valid at this scale . Soil Rating Polygons calcareous loamy alluvium Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line Not rated or not available placement. The maps do not show the small areas of contrasting Soil Rating Lines soils that could have been shown at a more detailed scale . ,,,#$ calcareous loamy alluvium * Not rated or not available Please rely on the bar scale on each map sheet for map measurements . Soil Rating Points ® calcareous loamy alluvium Source of Map : Natural Resources Conservation Service O Not rated or not available Web Soil Survey URL : http ://websoilsurvey. nrcs . usda .gov Coordinate System: Web Mercator (EPSG : 3857) Water Features Streams and Canals Maps from the Web Soil Survey are based on the Web Mercator Transportation projection , which preserves direction and shape but distorts distance and area . A projection that preserves area , such as the --w-+ Rails Albers equal-area conic projection , should be used if more accurate Interstate Highways calculations of distance or area are required . US Routes This product is generated from the USDA-NRCS certified data as of Major Roads the version date(s) listed below. Local Roads Soil Survey Area : Weld County , Colorado , Northern Part Background Survey Area Data : Version 10 , Sep 23 , 2014 Aerial Photography Soil map units are labeled (as space allows) for map scales 1 : 50 , 000 or larger. Date(s) aerial images were photographed : Apr 22 , 2011 —Oct 19 , 2011 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps . As a result, some minor shifting of map unit boundaries may be evident. 17 Custom Soil Resource Report Table—Parent Material Name (Pawnee Buttes) Parent Material Name-Summary by Map Unit—Weld County,,Colorado,Northern Part(CO617) ' Map unit symbol ,' Map unit name ° ,' Rating Acres m AO1, ,,Percent of AO1 , ,' 31 Kim-Mitchell complex,0 calcareous loamy 140 4 55 9% to 6 percent slopes alluvium 61 Stoneham fine sandy calcareous loamy 110 9 44 1% loam,0 to 6 percent alluvium slopes Totals for Area of Interest 251 4 100 0% Rating Options—Parent Material Name (Pawnee Buttes) Aggregation Method Dominant Condition Component Percent Cutoff None Specified Tie-break Rule Lower 18 References American Association of State Highway and Transportation Officials (AASHTO ) . 2004 . Standard specifications for transportation materials and methods of sampling and testing . 24th edition . American Society for Testing and Materials (ASTM ) . 2005 . Standard classification of soils for engineering purposes . ASTM Standard D2487- 00 . Cowardin , L . M . , V. Carter, F . C . Golet , and E . T . LaRoe . 1979 . Classification of wetlands and deep-water habitats of the United States . U . S . Fish and Wildlife Service FWS/OBS-79/31 . Federal Register. July 13 , 1994 . Changes in hydric soils of the United States . Federal Register. September 18 . 2002 . Hydric soils of the United States . Hurt , G . W. , and L . M . Vasilas . editors . Version 6 . 0 , 2006 . Field indicators of hydric soils in the United States . N ational Research Council . 1995 . Wetlands : Characteristics and boundaries . Soil Survey Division Staff. 1993 . Soil survey manual . Soil Conservation Service . U . S . Department of Agriculture Handbook 18 . http : //www. nrcs . usda . gov/wps/portal /nrcs/ detail/national/soils/?cid = nrcs142p2_054262 Soil Survey Staff. 1999 . Soil taxonomy : A basic system of soil classification for making and interpreting soil surveys . 2nd edition . Natural Resources Conservation Service , U . S . Department of Agriculture Handbook 436 . http : //www. nrcs . usda . gov/wps/portal/ nrcs/detail/national/soils/?cid = nrcs142p2_053577 Soil Survey Staff. 2010 . Keys to soil taxonomy . 11th edition . U . S . Department of Agriculture , Natural Resources Conservation Service . http : //www. nrcs . usda . gov/wps/ portal/nrcs/detail/national/soils/? cid = nrcs142p2_053580 Tiner, R . W. . Jr. 1985 . Wetlands of Delaware . U . S . Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control , Wetlands Section . U nited States Army Corps of Engineers , Environmental Laboratory . 1987 . Corps of Engineers wetlands delineation manual . Waterways Experiment Station Technical Report Y- 87- 1 . U nited States Department of Agriculture , Natural Resources Conservation Service . N ational forestry manual . http : //www. nres . usda . gov/wps/portal/nres/detail/soils/ home/?cid = nrcs142p2_053374 U nited States Department of Agriculture , Natural Resources Conservation Service . N ational range and pasture handbook . http : //www. nres . usda . gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid = stelprdb1043084 19 Custom Soil Resource Report U nited States Department of Agriculture , Natural Resources Conservation Service . N ational soil survey handbook , title 430-VI . http : //www . nres . usda . gov/wps/portal/ nres/detail/soils/scientists/? cid = nres142p2_054242 U nited States Department of Agriculture , Natural Resources Conservation Service . 2006 . Land resource regions and major land resource areas of the United States , the Caribbean , and the Pacific Basin . U . S . Department of Agriculture Handbook 296 . http : //www. nres . usda . gov/wps/portal/nres/detail/national/soils/? cid = nrcs142p2_053624 U nited States Department of Agriculture . Soil Conservation Service . 1961 . Land capability classification . U . S . Department of Agriculture Handbook 210 . http : // www. nres . usda . gov/Internet/FSE_DOCUMENTS/nres142p2_052290 . pdf 20 APPENDIX A-2 HYDROGEOLOGIC AND GEOTECHNICAL FIELD INVESTIGATION REPORT = 1- 4,-- Lres r� APPENDIX A -2 W HYDROGEOLOGIC AND � GEOTECHNICAL FIELD INVESTIGATION PROGRAM Pawnee Waste LLC nr. Weld County , Colorado cd„ I- 0 8 rzSubmitted to : Pawnee Waste LLC al am 155 E . Boardwalk ♦ A Z Suite 300 V Ft . Collins , CO 80525 0 0 Submitted by : Golder Associates Inc . C.9 44 Union Boulevard , Suite 300 Lakewood , CO 80228 cn LIC. July 23 , 2015 Project No . 1407882B Revision 1 - February 19 , 2016 A world of capabilities CS delivered locally Golder � Associates Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation --tre Februa 2016 Appendix A-2 2B 14 7 ry 0 88 Rev . e 1 Table of Contents 1 . 0 INTRODUCTION 1 2 . 0 FIELD PROGRAM PREPARATION 2 2 . 1 Field Program Planning Documents 2 2 . 2 Surveying 2 2 . 3 Utilities Clearance 2 2 . 4 Site Orientation 2 3 . 0 FIELD ACTIVITIES 3 3 . 1 Decontamination Procedures 4 3 . 2 Drilling , Sampling , and Geologic Logging 4 3 . 3 Geotechnical Laboratory Testing 5 3 . 4 Piezometer and Monitoring Well Construction 6 3 . 4 . 1 General Piezometer and Monitoring Well Construction 6 3 . 4 . 2 Permanent Monitoring Wells 6 3 . 4 . 3 Temporary Piezometers 7 3 . 5 Monitoring Well Development 7 3 . 6 Surveying 7 3 . 7 Monitoring Well Hydraulic Testing 8 3 . 7 . 1 Equipment and Procedure 8 3 . 7 . 2 Analysis Approach 8 4 . 0 FIELD DOCUMENTATION 9 5 . 0 REFERENCES 10 List of Tables Table A-2 - 1 Borehole Summary Table A-2 -2 Piezometer Construction Summary Table A-2 -3 Monitoring Well Construction Summary Table A-2 -4 Slug Test Results Summary List of Attachments Attachment A-2 - 1 Borehole Logs Attachment A-2 -2 Piezometer and Monitoring Well Construction Diagrams Attachment A-2 -3 Monitoring Well Development Forms Attachment A-2 -4 AQTESOLVTM Analysis of Slug Testing Data Cr41Golder I 114\1407882b\040010403 edop rev1\appendix a11407882a app a-2 pawnee waste field investigation report rev1 19feb16 doc Associates lfr -iisrFebruary 2016 Appendix A-2 1407882B Rev . 1 i - . _.4 ry 1 1 . 0 INTRODUCTION A field investigation was performed for the proposed Pawnee Waste E & P Landfill ( Landfill ) as part of the hydrogeologic and geotechnical characterization study . Activities included : 1 ) the drilling of 16 boreholes ; 2 ) the installation and development of 4 temporary piezometers ; and 3) the installation , development , and testing of 4 monitoring wells . The hydrogeologic investigation activities were completed to serve the following purposes associated with the Design and Operations Plan ( D &O Plan ) : ■ Satisfy 6 CCR 1007-2 , Part 1 regulations pertaining to the Site Investigation subsections on Geologic Data ( Section 3 . 2 . 1 ) and Hydrologic Data ( Section 3 . 2 . 2 ) for solid waste disposal landfill sites and facilities ; • Facilitate design of the bottom liner system for the proposed Landfill by defining the uppermost groundwater occurrence ( potentiometric surface or water table) , identifying and delineating lithological units , and characterizing other subsurface conditions (e . g . , in situ hydraulic conductivity , groundwater flow direction , and gradient) ; • Support the proposed Landfill foundation analyses through geotechnical testing of soil beneath the proposed area for relevant engineering properties : and • Provide a basis for the proposed groundwater network to monitor the proposed Landfill . Additional information on the various elements of the hydrogeologic and geotechnical characterization field program is provided in the sections that follow. Golder \14\1407882b\040010403 edop revl \appendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc tm=A Associates '€ Appendix A-2 - February 1407882B Rev . 1 - - ry 2016 2 2 . 0 FIELD PROGRAM PREPARATION In preparation for the hydrogeologic field investigation , Golder prepared planning documents and performed several activities as described below . 2 . 1 Field Program Planning Documents • Work Plan : The "Work Plan for Site Characterization Field Drilling and Sampling Activities " (Work Plan ) , dated September 17 , 2014 , was developed to provide project objectives , summarize the specific investigative methods and technical procedures to be followed , summarize testing to be performed , and summarize reporting requirements for a hydrogeologic and geotechnical field investigation and hydrogeologic and geotechnical characterization report . • HaSEP : A health and safety environment plan ( HaSEP ) was prepared concurrently with the Work Plan and submitted to the Golder team prior to initiation of the field program . The HaSEP identifies health and safety issues related to the field program and provides site-specific procedures for protecting Golder team personnel throughout the completed field activities . 2 . 2 Surveying Clark Land Surveying (Clark) performed an initial survey during the field investigation activities . Golder staked the location of each borehole , temporary piezometer, and monitoring well using a Trimble GeoXT 6000 handheld Global Positioning System ( GPS ) device . After the field investigation activities were completed . Clark performed a follow- up survey for each borehole , temporary piezometer . and monitoring well . 2 . 3 Utilities Clearance The utilities clearance was performed by the Utility Notification Center of Colorado ( UNCC — Colorado 811 ) . There are two utilities in the proposed investigation area : Noble Energy has an underground natural gas pipeline in the southwest corner of the site and the United States Air Force ( USAF ) has an underground missile cable in the northeast corner of the site . Each utility was flagged by either Noble Energy or the USAF 90th Missile Maintenance Squadron before the field investigation activities . Boreholes were then located to avoid these areas . 2 . 4 Site Orientation Upon arrival , Golder field staff met with the drilling subcontractor, Site Services Drilling LLC ( Site Services) , on site to evaluate each borehole location to confirm that each borehole would be accessible with the two-wheel drive drill rig and support vehicles . All boreholes , temporary piezometers , and monitoring wells were completed near the proposed locations . t447 Golder I \14\1407882b\0400\0403 edop revl\appendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc r Associates February 2016 Appendix A-2 1407882B Rev . 1 3 3 . 0 FIELD ACTIVITIES The activities of the field program were designed to : 1 . Adequately characterize the hydrogeologic and geotechnical properties of the proposed Landfill : 2 . Provide permanent groundwater monitoring locations that can potentially be included in the groundwater detection monitoring network , where possible ; and 3 . Provide lithologic and hydrologic information for the proposed Landfill . Based on these considerations , a review of CDPHE 6 CCR 1007-2 . Part 1 requirements , and a proposed Landfill area of approximately 74 acres , Golder performed the following field program components : • Drilling and geologic sampling of 16 boreholes ( BH -01 through BH - 16 ) on a grid pattern within the proposed Landfill to characterize subsurface materials and identify the uppermost saturated interval ; • Drilling , geologic sampling . and installation of four permanent monitoring wells ( MW-01 . MW-02 , MW-03 . and MW-04 ) around the perimeter of the proposed Landfill footprint to characterize subsurface materials and screen the uppermost saturated interval to allow conversion to groundwater monitoring wells and use in the future detection groundwater monitoring network , if practical and approved by CDPHE ; • Installation of four temporary piezometers ( PZ-01 , PZ-02 , PZ-03 , and PZ-04) with PZ-01 installed near the northwest perimeter. and PZ-02 , PZ-3 , and PZ-04 installed within the interior of the proposed Landfill footprint to characterize subsurface materials and screen the uppermost saturated interval to aid in the design of the bottom liner system . PZ-01 was subsequently converted to MW-02A as discussed in Section 3 . 4 . 2 ; • Development of the permanent monitoring wells in preparation for water level measurements , hydraulic testing , and water quality sampling ; • Hydraulic testing of the permanent monitoring wells to estimate hydraulic conductivity and groundwater flow velocity ; ■ Collection of bulk samples and brass liners from boreholes , temporary piezometers , and monitoring wells for geotechnical testing , including hydraulic conductivity testing of bucket samples for possible use during future construction as soil liner or cover material . The field investigation work was completed in general accordance with the Work Plan . Some deviations from the Work Plan were necessary to achieve the overall goals of the field program and provide optimal data for use in liner design , and were primarily related to increasing the completion depths based on the groundwa :er conditions encountered during drilling . Also . due to the presence of confined groundwater conditions , monitoring well and piezometer screen lengths were reduced from 20 feet . as planned in the Work Plan , to 10 feet in all monitoring wells and piezometers with the exception of well MW-3 which was installed with a 5-foot screen . t6o14r \14\1407882b\C400\0403 edop revl\appendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc Associates '# February Appendix A-2 1407882B Rev . 1 - -. _ 2016 4 3 . 1 Decontamination Procedures To avoid potential cross-contamination during field activities , the following procedures were used : • Prior to drilling and between each piezometer or monitoring well location , drilling and sampling equipment was pressure washed . • Only hydrocarbon -free products were used on drilling and sampling equipment threads . • New , disposable nitrile gloves were used during monitoring well installation . • The monitoring wells were developed using new, disposable tubing : surge blocks ; and foot valves for each well . • Prior to development and between developing each monitoring well , development equipment was decontaminated using an Alconox solution wash followed by a rinse with distilled water . • New PVC was used for hydraulic slug testing of the piezometers . which was decontaminated using an Alconox solution wash and distilled water rinse between each piezometer. Decontamination water was allowed to run onto the ground surface . 3 . 2 Drilling , Sampling , and Geologic Logging From September 22 through October 20 , 2014 , 12 boreholes , 4 temporary piezometers , and 4 permanent monitoring wells were drilled by Site Services using a CME -55 drill rig equipped with 7%-inch outside diameter hollow-stem augers ( HSAs) and a 7%-inch diameter hollow cutterhead bit. The drill rig used hydraulic down -pressure and rotary power from the top-mounted drill head to advance and turn the augers . All of the boreholes , including monitoring well and piezometer borings , were drilled to the first occurrence of groundwater plus a maximum of 10 additional feet with the exception of borehole BH -2014-02 , which was terminated dry at 60 feet below ground surface (ft bgs ) . For the piezometer and monitoring well boreholes , the depth at which groundwater was first observed was recorded and the water level was monitored prior to construction of the piezometer/monitoring well . The static water level in all borings was measured higher than the first occurrence of groundwater indicating confined groundwater conditions . As previously noted , initial boreholes ( BH -01 through BH - 16 ) were used for geologic classification , sample collection , and identification of the uppermost saturated interval . The initial soil boreholes were allowed to remain open for the duration of the drilling program to collect daily water level measurements . At the completion of the drilling program , each of the initial boreholes were backfilled with bentonite chips from the bottom of the borehole to within approximately one foot below ground surface . with drill cuttings above the bentonite chips to the ground surface . Geologic logging was performed in conjunction with sampling using a CME bearing head continuous sampling system . The continuous sampler was advanced immediately ahead of the augers in five-foot intervals . The sample recovery for each five-foot interval was recorded in the borehole logs presented in Attachment A-2 - 1 . Boreholes BH -2014- 13 and BH -2014- 14 were sampled with a standard , two-foot- long jGo14er _ I \14\1407882b\0400\0403 edop rev11appendix a\1407882a app a-2 pawnee waste field investigation report rev1 19feb16 doc Associates February 2016 Appendix A-2 1407882B Rev . 1 5 split-spoon (SS ) sampler. The SS sampler was attached to a length of steel rods , which were lowered through the HSAs to the bottom of the borehole , and then driven through the HSAs using a 140-pound automatic trip hammer falling through a height of 30 inches , following ASTM D1586 procedures . The number of blows to drive the sampler two feet was counted and recorded in the borehole logs . SS samples were collected at a frequency of one per 5-foot drilling interval in boreholes BH-2014- 13 and BH -2014- 14 . Sample collection frequency is indicated by the blow counts shown in the borehole logs in Attachment A-2 - 1 . Golder provided oversight and technical guidance of the drilling operations (e . g . , sampling frequency) and visually classified the soil samples in general accordance with the Unified Soil Classification System ( USCS ) and Golder' s technical procedures . Sample descriptions recorded by Golder included the following : ■ Descriptive USCS classification in accordance with ASTM D2488 ; • Consistency of cohesive materials or density of non -cohesive materials : • Drive sample intervals and associated blow counts and recovery ; ■ Moisture content assessment ; • Color based on the Munsell rock color chart ; • Other descriptive features (weathered state , organic materials , macrostructure of fine- grained soils ; e . g . , roots , etc . ) . Sample descriptions are documented in the borehole logs , which are presented in Attachment A-2- 1 . Borehole depths ranged from approximately 50 to approximately 85 ft bgs . Total drilled depths are presented in Tables A-2- 1 through A-2 -3 . 3 . 3 Geotechnical Laboratory Testing Representative samples were collected from boreholes based on changes in lithology and/or depositional type . Bulk samples and brass liner samples were collected from boreholes BH -01 through BH - 16 and MW-01 through MW-04 . Selected samples were submitted for geotechnical testing , including : • Atterberg limits (ASTM D4318 ) : • Grain size analysis (ASTM C117/C136) ; ■ Standard Proctor (ASTM D698 , Method A) ; • Undisturbed and remolded flexible wall hydraulic conductivity testing (ASTM D5084 ) ; and • Consolidation testing (ASTM D2435 ) . These geotechnical tests provide information regarding foundation conditions and the suitability of on-site soils as construction materials . Geotechnical testing results are discussed in Section 4 . 2 of the main text of Appencix A — Hydrogeologic and Geotechnical Characterization Report , with laboratory data presented in Appendix A-3 . siA tjtGokler I 114\1407882b\0400\0403 edop revllappendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc Associates mi&_ - 21F-or February 2016 Appendix A-2 1407882B Rev . 1 - 6 3 . 4 Piezometer and Monitoring Well Construction 3. 4. 1 General Piezometer and Monitoring Well Construction Piezometers and monitoring wells were completed through the hollow-stem augers using two-inch , flush-threaded , Schedule 40 polyvinyl chloride ( PVC ) screen and riser pipe. The screen in each piezometer and monitoring well is perforated with 0 . 010-inch machined slots and was either 5 or 10 feet in length . A threaded PVC end cap was affixed to the bottom of each screen before it was placed in the borehole . PVC riser casing was added to the screen as it was lowered in the borehole until the screen was set to the desired depth and the top of the casing extended to approximately three feet above the ground surface . Next . the annular space around the piezometer, monitoring well screen , and end cap was backfilled with clean , washed . well- rounded silica sand . The sand pack was gravity-fed into the annular space between the PVC and borehole wall until it extended a minimum of two feet above the top perforation of the screen . Sand was placed at a slow rate and was checked frequently with a weighted tape to estimate that the proper quantity was placed and that no bridging occurred . As sand was added to the annular space , sections of the HSAs were incrementally removed . Medium (% inch ) bentonite chips were gravity-fed into the annular space above the screen and sand pack to within approximately three feet of the ground surface to provide a seal . A minimum of three gallons of potable water was added to every two bags of chips to hydrate the bentonite . The PVC riser was cut off with an approximate stick- up height of 2 . 5 feet above ground surface . A protective four-inch square steel casing was installed around the PVC riser and cemented in the annular space approximately three feet below ground surface . The protective casing extended approximately 0 . 5 feet above the top of the PVC casing and was equipped with a locking cover to prevent unauthorized entry and allow access for water level measurement . Filter sand was placed in the annular space between the protective casing and the PVC casing to near the top of the PVC . A removable , J -plug well cap was placed on top of the PVC casing . Piezometer and monitoring well construction details are provided in Attachment A-2 -2 and summarized in Tables A-2 -2 and A-2 -3 . respectively . 3. 4. 2 Permanent Monitoring Wells Four permanent monitoring wells , MW-01 through MW-04 . were installed around the perimeter of the proposed Landfill : one in the northeast corner and three to the southwest . These monitoring wells screen the uppermost saturated interval and were located to allow conversion to groundwater monitoring wells and use in the detection groundwater monitoring network . if practical and approved by CDPHE . They are located along the site boundary , with one placed up -gradient and three placed down -gradient of the proposed Landfill . After developing the potentiometric surface , MW-2014-02 was not located down - gradient as conceptualized . PZ-01 is situated down -gradient and will be developed as MW-2014-02A , ® Golder \14\1407882b\0400\0403 edop revl\appendix a11407882a app a-2 pawnee waste field investigation report revl 19feb16 doc Associates February 2016 Appendix A-2 1407882B Rev . 1 7 replacing MW-2014-02 in the detection monitoring network . The monitoring wells were drilled and completed to depths ranging from 50 to 85 feet . Construction of the permanent monitoring wells was completed as described in Sections 3 . 0 and 3 . 4 . 1 of this Appendix . 3. 4. 3 Temporary Piezometers Four temporary piezometers . PZ-01 through PZ-04 , were installed with PZ-01 installed near the perimeter and PZ-02 . PZ-3 , and PZ-04 installed within the interior of the proposed Landfill footprint . Piezometer PZ-01 was subsequently considered MW-02A , as previously discussed in Section 3 . 4 . 2 . The piezometers screen the uppermost saturated interval for the purposes of water level monitoring and to aid in the design of the bottom liner system for the proposed Landfill . Water level monitoring will continue until the Landfill is developed for waste placement , at which time they will be properly decommissioned in accordance with Colorado State , Office of the State Engineer, and State Board of Examiners of Water Well Construction and Pump Installation Contractors Standards , 2 CCR 402-2 . These piezometers were drilled and completed to depths rarging from 59 to 74 feet . Construction of the temporary piezometers was completed as described in Section 3 . 4 . 1 of this Appendix . 3 . 5 Monitoring Well Development Following monitoring well construction , development was performed to remove fines from near the screen and allow free flow of water into the monitoring well . Development was performed by gently surging the screened interval with a two-inch diameter surge block and purging water using a Waterra ' Hydrolift inertial lift pump . Samples of the purged water were monitored for pH , specific conductivity , and temperature . A YSI 63 water quality meter was used to periodically measure these water quality parameters during purging . Water levels were also periodically measured during development . Purging continued until a minimum of five well volumes of water was removed . A well volume represents the column of water standing inside the well casing and sand pack , assuming 30% porosity , at the time of purging . Groundwater removed during development was poured directly on the ground surface at the site . Development and water level information was recorded on monitoring well development forms presented in Attachment A-2 -3 . 3 . 6 Surveying Upon completion of the hydrogeologic investigation , Clark returned to survey the borehole , temporary piezometers . and monitoring well locations using the Colorado State Plane coordinate system . The final survey included X-Y location , ground surface elevations , and top of casing elevations for each monitoring well and piezometer. Ground surface and top-of-casing elevations were surveyed to the nearest hundredth of a foot to allow the measured depths to water to be transformed into accurate elevations for purposes of identifying flow directions and computing hydraulic gradients . t _ Golder \14\1407882b\C400\0403 edop revl \appendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc Associates Appendix A-2 :747- February 2016 8 1407882B Rev . 1 3 . 7 Monitoring Well Hydraulic Testing From October 24 to October 27 , 2014 . Golder performed variable-head , slug hydraulic testing at monitoring wells MW- 1 through MW-04 . The data resulting from these tests was used to evaluate the in situ horizontal hydraulic conductivity of geologic materials isolated by the screened intervals ( i . e . , the uppermost saturated zone) . 3. 7. 1 Equipment and Procedure Prior to slug initiation , Golder measured the static water level at each monitoring well with an electronic water level meter. Slug testing was performed with the instantaneous injection or withdrawal of a solid PVC rod ( slug ) into the water column of the monitoring well . Both rising head and falling head tests were performed at each monitoring well . Each monitoring well was tested multiple times . Upon initiation of either the slug injection or slug withdrawal , changes in the water level were monitored with a pressure transducer and data logger set to record water levels at a rapid interval until the monitoring well had recovered to at least 70% of its initial static level . Hydraulic test activities were recorded on slug test field forms . 3. 7. 2 Analysis Approach Formational hydraulic conductivities were estimated by using the Hvorslev ( 1951 ) analytical methods within the AQTESOLVTM software package ( Duffield 2007 ) . This method of analysis involves fitting a straight line to the linear portion of water level recovery test data plotted on a semi-log scale . The AOTESOLVTM analysis of the slug testing data , presented in Attachment A-2 -4 , shows a pronounced concave-upward curvature in the semi -log test response data from the piezometers . Based on Butler ( 1998 ) , this effect is indicative of varying storage mechanisms and is likely due to piezometer screen intervals that include both thin permeable lenses and confining beds under confined or semi -confined conditions . For each test analysis , a straight line was fit to the recommended head range ( normalized head between 0 . 15 and 0 . 25 ) in general accordance with guidelines described in Butler ( 1998 ) . Hydraulic conductivity was then estimated from the slope of this line . In addition to Attachment A-2 -4 , results of slug test analysis are also summarized in Table A-4 of the main text of Appendix A — Hydrogeologic and Geotechnical Characterization Report . C = A Golder i 11411407882b\0400\0403 edop revl\appendix a\1407882a app a-2 pawnee waste field investigation report revl 19feb16 doc Associates February 2016 Appendix A-2 1407882B Rev . 1 9 4 . 0 FIELD DOCUMENTATION All field activities were documented in the appropriate field form . Field information forms for this investigation include the following documents : • Daily Drilling Summary — A chronological summary of each day' s drilling activities , construction material quantities , and the explanation or authorization of unusual circumstances including standby and down time . • Record of Borehole — To document borehole geology, sample collection intervals , split spoon recovery, depth of first water, and any other pertinent observations (Attachment A-2-1 ) . • Monitoring Well and Piezometer Construction Summary — To document monitoring well and piezometer construction details (Attachment A-2-2) . • Monitoring Well Development Log — To document development methods . development volumes , groundwater levels , and water quality parameters (Attachment A-2 -3 ) . Golder \14\1407882b\040010403 edop revl \appendix a\1407882a app a-2 pawnee waste field investigation report rev1 19feb16 doc tar,A Associates slt_i February 2016 Appendix A-2 10 1407882B Rev . 1 -� . . s==- 5 . 0 REFERENCES Butler, J . J . , Jr. 1998 . The Design , Performance , and Analysis of Slug Tests . Boca Raton : Lewis Publishers . Duffield , G . M . 2007 . AQTESOLVTM for Windows Version 4 . 50 Professional , HydroSOLVE , Inc . Hvorslev , M . J . 1951 . Time Lag and Soil Permeability in Ground -Water Observations . Bull . No . 36 , pp . 1 -50 . Waterways Exper. Sta . Corps of Engrs . , US Army . Vicksburg , Mississippi . Golder I \14\1407882b\0400\0403 edop revl\appendix a11407882a app a-2 pawnee waste field investigation report revs 19feb16 doc tiesAt Associates July 2015 TABLE A-2 - 1 1407882B BOREHOLE SUMMARY Water Borehole Total Depth Water Level Date Easting Northing Diameter of Borehole Level(2 ) Elevation Borehole ID Completed (ft)(' ) (ft)u ) ( inches) (ft bgs ) (ft BTOC ) (ft AMSL) BH -2014-01 9/22/2014 3373371 . 77 1550535 . 37 6 . 00 60 50 . 00 5020 . 42 BH -2014-02 9/23/2014 3372728 . 69 1551812 . 63 ' 6 . 00 60 NA , dry BH -2014-03 9/ 14/2014 3374029 . 03 1551836 . 16 6 . 00 74 61 . 98 5020 . 35 BH -2014- 04 9/23/2014 3374723 . 67 1549868 . 57 6 . 00 75 59 . 44 5019 . 72 BH -2014-05 9/24/2014 3372094 . 46 1551151 . 19 6 . 00 59 48 . 16 5020 . 43 BH -2014-06 ( PZ- 1 , MW-2A) r 10/9/2014 3372060 . 75 1551800 . 20 8 . 00 59 See PZ Summary BH -2014-07 ( PZ-2 ) 10/ 10/2014 3373357 . 59 1551824 . 22 a 8 . 00 4 74 See PZ Summary BH -2014-08 9/24/2014 3372720 . 76 1550488 . 23 6 . 00 59 46 . 59 5020 . 30 BH -2014-09 9/25/2014 3373396 . 44 1549878 . 51 6 . 00 64 47 . 58 5020 . 36 BH -2014- 10 9/29/2014 3374675 . 73 1551179 . 69 h 6 . 00 84 62 . 75 5020 . 88 BH -2014- 11 9/30/2014 3373344 . 58 1551180 . 76 6 . 00 59 52 . 14 5021 . 61 BH -2014- 12 ( PZ- 3) 10/ 14/2014 3372729 . 96 1551158 . 36 8 . 00 i 59 See PZ Summary BH -2014- 13 10/8/2014 3374030 . 89 1551187 . 89 6 . 00 80 56 . 16 5020 . 44 BH -2014- 14 10/8/2014 3374042 . 69 1550497 . 01 8 . 00 70 54 . 63 5020 . 58 BH -2014- 15 ( PZ-4) 10/ 15/2014 3374694 . 17 1550545 . 88 8 . 00 72 See PZ Summary . BH -2014- 16 10/9/2014 3374038 . 29 1549874 . 91 8 . 00 69 53 . 69 I 5020 . 41 Notes 1 ) Each datum is from Colorado State Plane NAVD 88 . 2 ) Water levels measured by Golder Associates Inc . immediately prior to borehole abandonment . ft bgs : feet below ground surface ft AMSL : feet above mean sea- level ft BTOC : feet below top of casing ® -" Golder I \14\1407882B\0400\0402 EDOP FNL\Appendix A\App A-2\Tables\Table A-2-1 , 2, & 3 Pawnee_Buttes_BH_PZ_MW_Summary_REV2 xtsx ® Associates July 2015 TABLE A-2-2 1407882B PIEZOMETER CONSTRUCTION SUMMARY Top of Casing Water Total Depth Borehole Bottom of Top of Bottom of Top of Bottom of Ground Casing Stick-up Water Level Date Easting Northing of Borehole Diameter Casing Screen Screen Sand Pack Sand Pack Elevation Elevation Height Level(3) Elevation Piezometer ID Completed (ft)t11 (ft)(') (ft bgs) (inches) (ft bgs) (ft bgs) (ft bgs) (ft bgs) (ft bgs) (ft AMSL) (ft AMSL) (ft)'2) (ft BTOC) (ft AMSL) PZ- 1 (MW-2A) 10/23/2011 3372060.75 1551800.20 58. 8 8 58.8 48. 7 58. 3 46.5 58.8 5070.90 5073.66 2 .76 53. 53 5020_ 13 PZ-2 10/23/2011 3373357 .59 1551824.22 74.0 8 73.6 63.5 73.3 61 .2 74.0 5077.08 5079.77 2 .68 59. 15 5020.62 I a S PZ-3 10/12/2011 3372729.96 1551158.36 58.6 8 58.6 48.5 58.3 45. 1 58,6 5070.32 5073. 11 2.80 52.68 5020.43 I I PZ-4 10/12/2011 3374694. 17 1550545.88 72. 1 8 72. 1 61 .9 71 .7 58.8 72. 1 5081 .51 5084.34 2 .84 63. 35 5020.99 Notes' 1 ) Each datum is from Colorado State Plane NAVD 88. 2) Stick-up height refers to the height of the PVC well casing above ground surface. 3) Water levels measured by Golder Associates Inc on October 27, 2014. ft bgs feet below ground surface ft AMSL _ feet above mean sea level ft BTOC: feet below top of casing ar Golder I \14\1407882810400\0402 EDOP FNLlAppondix AV1pp A-2\Tables\Table A-2-1, 2, & 3 Pawnoe_Buttos_BH_PZ_MW_Surnmary_REV2 xlsx Associates February 2016 TABLE A-2-3 1407882B Rev 1 MONITORING WELL CONSTRUCTION SUMMARY Top of Casing Water Total Depth Borehole Bottom of Top of Bottom of Top of Bottom of Ground Casing Stick-up Water Level Date Easting Northing of Borehole Diameter Casing Screen Screen Sand Pack Sand Pack Elevation Elevation Height Level(3) Elevation Monitoring Well ID Completed (ft)o ) (ftr (ft bgs) (inches) (ft bgs) (ft bgs) (ft bgs) (ft bgs) (ft bgs) (ft AMSL) (ft AMSL) (ft)(Z) (ft BTOC) (ft AMSL) r MW-2014-01 10/18/2014 3374729.63 1551976.06 85. 2 8 85.2 75. 2 84.6 72 . 1 85. 2 5091 _29 5094 02 2 .73 73.02 5021 .00 IMW-2014--02 10/20/2014 3374062 .85 1549567 .56 68.6 8 68.6 53.4 68. 1 51 .0 68.6 5074.42 5077 . 16 2 .74 56. 32 5020.84 4MW-2014-02A (PZ-1 ) 10/23/2014 3372060.75 1551800.20 58.8 8 58.8 48. 7 58. 3 46.5 58.8 5070.90 5073.66 2 .76 53. 53 5020. 16 MW-2014-03 10/17/2014 3372715. 18 1549869.74 50. 5 8 50.5 45.3 50.0 42.2 50.5 5065.04 5067.73 2.69 47.31 5020.42 . MW-2014-04 10/16/2014 3372034.48 1550684 .35 59.0 8 57.4 47.3 57 .0 44.9 58.8 5066.83 5069_55 2.72 49. 21 5020.34 Notes: 1 ) Each datum is from Colorado State Plane NAVD 88. 2) Stick-up height refers to the height of the PVC well casing above ground surface . 3) Water levels measured by Golder Associates Inc. on October 27 , 2014 . ft bgs: feet below ground surface ft AMSL : feet above mean sea level ft BTOC: feet below top of casing ti=_• fat Golder 1114\14078828\040010003 EDOP REV1tiAppendix A1Tablc A-2-1 , 2. & 3 Pawnee_Buttes_8H_PZ_MW_Sumrtary_REV1 19FE82016 xlsx Associates July 2015 TABLE A-2-4 1407882B SLUG TEST RESULTS SUMMARY Observed Static Water Saturated Screen Depth to Top Hydraulic Hydraulic Displacement, Column Height, Saturated Thickness, b Length, L of Well Transmissivity, T Conductivity, K Conductivity, K Well ID Test Type Solution Ho (ft) H (ft) Thickness, b (ft) (cm) (ft) Screen , d (ft) (cm2/sec) (cm/sec) (ft/day) i 1 I MW- 1 Injection- 1 Hvorslev 2 259 14. 95 13. 13 400. 2024 9.43 4 84 3.2E-01 8.0E-04 2.3E+00 MW- 1 Injection-2 Hvorslev 2 .239 14.95 13. 13 400.2024 9.43 4.84 3.2E-01 8.0E-04 2.3E+00 MW- 1 Withdrawal- 1 Hvorslev 2 .314 14.95 13. 13 400.2024 9.43 4.84 3.3E-01 8.2E-04 2.3E+00 MW- 1 Withdrawal-2 Hvorslev 2 .082 14.95 13. 13 r 400.2024 9_43 4.84 3. 1E-01 7 .7E-04 2.2E+00 MW-2 Injection-- 1 Hvorslev 2.319 14.97 14.97 456.2856 12.08 0 1 .7E+00 3.8E-03 1 . 1E+01 MW-2 Injection-2 Hvorslev 2.265 14.97 14.97 456.2856 12.08 0 1 .7E+00 3.8E-03 1 . 1E+01 MW-2 Withdrawal- 1 Hvorslev 1 .842 14.97 14.97 456.2856 12.08 0 3.5E+00 7 .7E-03 2 .2E+01 MW-2 Withdrawal-2 Hvorslev 2 .368 I 14.97 14.97 456.2856 12.08 0 4.4E+00 9.7E-03 2 .7E+01 I I MW-3 Injection- 1 Hvorslev 1 .725 5.88 5.88 179.2224 4.66 1 .22 2.8E+00 1 .5E-02 4.3E+01 MW-3 Injection-2 Hvorslev 1 .035 5.88 5.88 179.2224 4.66 1 .22 1 .8E+00 1 .0E-02 2.9E+01 MW-3 Injection-3 Hvorslev 1 .436 5.88 5.88 179.2224 4.66 1 .22 1 .8E+00 1 .0E-02 2.9E+01 MW-3 Withdrawal- 1 Hvorslev i 1 .705 5.88 5.88 179.2224 4.66 1 .22 2.5E+00 1 .4E-02 4.0E+01 MW-3 Withdrawal-2 Hvorslev 1 .531 5.88 5.88 179.2224 4.66 1 .22 2 .5E+00 1 .4E-02 3.9E+01 MW-3 Withdrawal-3 Hvorslev 1 .412 5.88 5.88 179.2224 4.66 1 .22 2 .4E+00 1 .4E-02 3.9E+01 I 1 MW-4 Injection- 1 Hvorslev i 2 .29 12. 18 12. 18 371 .2464 9.77 1 .65 4.5E-02 1 .2E-04 3 .4E-01 MW-4 Injection-2 Hvorslev 2 .283 12. 18 12. 18 371 .2464 9. 77 1 .65 2 .3E-02 6.2E-05 1 .8E-01 MW-4 Withdrawal- 1 Hvorslev 2.397 12. 18 12. 18 371 .2464 9. 77 1 .65 2 .2E-02 6.0E-05 1 .7E-01 MW-4 Withdrawal-2 Hvorslev 2 . 147 12. 18 12. 18 371 .2464 9.77 1 .65 2.5E-02 6.6E-05 1 .9E-01 Notes: Geometric Mean K 1 .8E-03 5.2E+00 1 ) Saturated thickness, b, was assumed to be the saturated thickness of the filter pack (i .e. , not true aquifer saturated thickness) . Min K 6.0E-05 1 .7E-01 Max K 1 .5E-02 4 _3E+01 A Golder 1114\1407882B\0400\0402 EDOP FNL Appendix A'App A-2\Tables\Table A-2-4 Pawnoo_Buttos_Slug_Result_Sumrnary xlsx s� Associates tes PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,550,535 4 E 3,373,371 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 4 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/22/14 12 25 TOTAL DEPTH 60 ft DATE COMPLETED 09/22/14 15 38 BOTTOM ELEVATION 5,010 4 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None z p U a a ¢ LITHOLOGY DESCRIPTION o o ELEV w° COMMENTS > qi 2 DEPTH w c0 (ft) 2 00 00-14.0 -5070 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2),w<PL,dry,soft,roots present in top 1 ft,moderate HCI reaction 34 4 50- -5065 39 5 ML H o - O a - a z U 100 a. —5060 o U a f 5 5 7 W _ m Wi Z 3 13-14 ft Same as at 0 ft but firm — 5056 4 140-175 140 (SP)SAND,fine,subangular,some non-plastic silt,very SP 51 w pale orange(10YR 8/2),dry,loose k 150— Log continued on ne#page CO CO 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi ��';Golder DRILLER Josh Anderson CHECKED Associates DATE 9/22/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,550,535 4 E 3,373,371 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 4 ft O V -J a ELEV a Q LITHOLOGY DESCRIPTION OO COMMENTS w > qQ_9 DEPTH r w c� (ft) n 8 re 15u 140-175 -5055 (SP)SAND,fine,subangular some non-plastic silt,very pale orange(10YR 8/2),dry,loose SP 31 5 5052 9 175-470 175 (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very - stiff,moderate HCl reaction Bulk sample collected from the continuous core sampler 19 19-24 ft Same as at 17 5 ft but moderately cemented 44 ft 20 CT- -3050 - r3 5 250- -5045 ML - 26-29 ft Same as at 17 5 ft but stiff 5 U, m 0 0 t7 - a a - c0 'a - C7 rr 2 O 0 300- N, 5040 30-33 ft Same as at 17 5 ft but with some CaCO3 veins, — strongly cemented,strong HCI reaction so. 5 w 5 _ a m r� _ Log continued on next page En, DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi OS(�' r DRILLER Josh Anderson CHECKED Associates DATE 9/22/2014 SHEET 2 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,550,535 4 E 3,373,3718 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 4 ft U ¢ x ELEV a.F ¢ LITHOLOGY DESCRIPTION nz o w a COMMENTS >" DEPTH r o w c� (ft) cc 175-470 (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff moderate HCI reaction 350- 3035 5 5 —37—39 ft Augers gnnding but progressing 37-39 ft Same as at 17 5 ft but moderately cemented, strong HCI reaction 40 Cr 3030 ML 5 5 450- 3025 m m 5 (2 5 a - 5023 4 470-530 470 (CL) SLTY CLAY, medium plasticity, some fine to medium sand, pale yellowish brown (10YR 6/2), w—PL, cc — moist,stiff x U 0 Ni N W - CL ml 50 0— w 3020 5 a 5 G _ 0 — th w — Log continued on next page WI -' DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi C_'`' Golder DRILLER Josh Anderson CHECKED Associates DATE 9/22/2014 SHEET 3 of 4 o_ PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,550,5354 E 3,373,371 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 4 ft p U a ¢� LITHOLOGY DESCRIPTION nz ELEV L a COMMENTS w" > 94 DEPTH ro w c� (ft) 2 8 re 50174 CL 53 0-54 0 53 0 Outside of core is wet at 53 ft (SM) SILTY SAND, fine to medium, subangular, —25% sm 5 fines, pale yellowish brown (10YR 6/2), non-plastic, 50164 - A moist,compact,no HCI reaction / sa o - 540-595 (ML)CLAYEY SILT,low plasticity some fine to medium 55 0 sand pale yellowish brown(10YR 6/2),w<PL,very stiff, strongly cemented,strong HCI reaction —5015 - 2 ML 6 6 fP t• First water at 59 ft After 30 minute break groundwater - 5010 9 measured in borehole at 53 4 ft bgs,hole depth 54 ft 595-600 a 595 SW buu (SW) SAND, fine to coarse well graded subangular, - - - a 50104 1some fines trace fine gravel dark yellowish brown(10YR 60 0 4/2),non-plastic wet,compact Bonny completed at 60 ft, J- Elonng comnleted at 60 ft, F. 65 0- 0 a a z - O a. C7 a O U N N1 - Fw m w1 - W Z a m 700- 0 N w WiTM, DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w 't% Golder DRILLER Josh Anderson CHECKED 3 / Associates DATE 9/22/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,551,812 6 E 3,372,728 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,072 5 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/22/14 16 30 TOTAL DEPTH 60 ft DATE COMPLETED.09/23/14 09 30 BOTTOM ELEVATION 5,012 5 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None o U - z w <= LITHOLOGY DESCRIPTION a p DE F D COMMENTS w (ft) ce ou 00-182 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2),w<PL,dry,soft,roots present in top 1 5 ft,moderate HCI reaction 4 -5070 Bulk sample collected from cuttings 4-20 ft 5 0- 23 5 3065 ML m - H a a z a ▪ 100- U - 0 1.5 NI 5 N W w 3060 w z - 3 o_ m n v _ 26 5 ch 150— Log continued on next page CO -"am DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt z t'•� Golder DRILLER Josh Anderson CHECKED AVASSO(i211te3 DATE 9/23/2014 SHEET 1 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,551,812 6 E 3,372,728 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,072 5 ft z O O ELEV 2 w LITH0L0GY DESCRIPTION o OJ DEPTH w COMMENTS ❑ w co (ft) 2 8 re 15u 00-182 - (ML) SILT low plasticity, some fine sand very pale orange(10YR 8/2) w<PL dry soft,roots present in top 1 5 ft moderate HCI reaction ML 26 5 —5055 5054 3 - 182-379 182 (ML) CLAYEY SILT, low plasticity, some fine to sand pale yellowish brown (10YR 6/2), w<PL, dry, stiff, moderate HCI reaction - 19-37 9 ft Same as at 18 2 ft but moist and weakly to 20 0— moderately cemented silt 5 5 3050 25 0- ML 5 5 N 3045 a a z _ Pause borehole for 9/22/2014 at 29 ft bgs,Resume 29-34 ft some small CaCO3 clasts borehole 9/23/2014 S 300- NI N w - w 5 w 5 _ 3040 0 u1 Log continued on next page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi p DRILLER Josh Anderson CHECKED Associates DATE 9/23/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,551,812 6 E 3,372,728 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,072 5 ft z • p U a x ¢. LITHOLOGY DESCRIPTION a p0 ELEV w a COMMENTS w" >" c 9 DEPTH r • w a (ft) 2 8 cc - 182-379 t• (ML) CLAYEY SILT, low plasticity, some fine to sand - pale yellowish brown (10YR 6/2), w<PL, dry, stiff, ' % ' moderate HCI reaction ,t': 350- _ � ML _ 3 5 - 35 r 30 • ,/• 5034 6 379-410 379 i _ (SM) SILTY SAND, fine to medium subangular -20% fines, pale yellowish brown (10YR 6/2), non-plastic moist,compact,no HCI reaction - - SM 400- 5031 5 410-425 °t• 41O - (ML)sandy CLAYEY SILT low plasticity fine to medium 7 2.75 subangular sand,moderate olive brown (5Y 4/4) w<PL ML 5 - very stiff,no reaction to HCI //, 5030 _ 5030 0 425-500 425 (ML) CLAYEY SILT, low plasticity some fine to sand, pale yellowish brown(10YR 6/2),w<PL,dry,stiff weakly to moderately cemented,weak HCI reaction 1 , 45 0- „ti/// r in // I- ML 5 O 5 a < a - z a -5025 /. (2 E, J N - i -- V 5022 5 Wi 500- 500-530 50O z - (CL) SILTY CLAY, medium plasticity, some fine to medium sand, moderate yellowish brown (10YR 5/4), 5 5 a — cohesive w—PL,moist,stiff cl CL 17 w / 7 '-5020Log continued on next page 7 MI IMF DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi u±' DRILLER Josh Anderson CHECKED 3 "Associates DATE 9/23/2014 SHEET 3 of 4 a 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,551,812 6 E 3,372,728 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,072 5 ft Z O -J 2 O g a ELEV Z LITHOLOGY DESCRIPTION a ¢ vi a COMMENTS w > qw DEPTH r w (tt) 2 8 % CL 5019 5 530-600 530 5 (ML) CLAYEY SILT, low plasticity, some fine to sand, 5 pale yellowish brown (10YR 6/2), w<PL, dry, stiff, moderately cemented,moderate HCI reaction r ,� • 550- _ - r ML y 6 / r 6 -5015 60 0 5012 5 60 0 No groundwater present at completion depth jalonnq completed at 60 ft, flonng completed at 60 ft, m 650- a CD a a z _ 0- cc x U 0 NI - W W W' _ W 2 a 70 0- W W' -'-'` DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi LE Golder DRILLER Josh Anderson CHECKED Associates DATE 9/23/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,551,836 2 E 3,374,029 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,082 3 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/22/14 10 30 TOTAL DEPTH 74 ft DATE COMPLETED 09/23/14 12 30 BOTTOM ELEVATION 5,008 3 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None z p Hr xp ELEV �w w <x LITHOLOGY DESCRIPTION ° DEPTH COMMENTS o w (ft) 2 00 _ 00-176 (ML) SILT low plasticity, some fine sand, very pale orange(10YR 8/2),W<PL,dry,soft,roots present in top 1 ft,moderate HCI reaction _ 18 4 -5080 50- - 1 5 -5075 ML in m H 0- 100 0 0 - K U - o - 3 � 5 FW _ co —5070 12 - 17.6 ft Same as at 0 ft but with fine to medium w subangular sand z - 3 a m r 233 5 150- Log continued on next page COI Imic DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi r Golder DRILLER Josh Anderson CHECKED °Associates DATE 9/23/2014 SHEET 1 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,551,836 2 E 3,374,029 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,082 3 ft O a.= ¢ LITHOLOGY DESCRIPTION a z ELEV O COMMENTS w" >" �(2 DEPTH r� o W O (ft) 2 W re 15 U 00-176 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2),W<PL,dry,soft,roots present in top 1 — ft moderate HCI reaction ML - 233 5 -5065 5064 7 176-695 176 - (ML)CLAYEY SILT,low plasticity,trace fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff,moderate HCI reaction • 200 P.))//: 34 5 -5060 21 9-23 8 ft Same as at 17 6 ft but yellowish gray(5Y ! '. 7/2) 25 0- l ML 5 N _ -5055 / CUJ _ Y r a z c� U • - 29-33 ft Same as at 17 6 ft but no reaction to HCI U 0 300 Nl N W m� 4 W 5 w z a -• 5050 N /L • m (� A _ p _ Y P Loq continued on need page 1O' DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Golder DRILLER Josh Anderson CHECKED • A.Associates DATE 9/23/2014 SHEET 2 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,551,836 2 E 3,374,029 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,082 3 ft z I p O ELEV z w" > LITHOLOGY DESCRIPTION a O DEPTH w a COMMENTS o w w 0 (ft) 2 w cC - 176-695 7(ML)CLAYEY SILT,low plasticity,trace fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist very stiff moderate HCI reaction 35 Cr '`/, - :.„),/, - 5 5 - / -5045 I j• j40 0- 7.l' 5 5 -3040 r_ ML 44-454 ft Same as at 17 6 ft but with some fine to r • medium sand 45 0-- 45 - 50 ft Same as at 17 6 ft but no reaction to HCI //// mexcept for directly on CaCO3 clasts/seams i- 0 /: 5 a a - z (0 3035 'a (0 re = r U N W at t 500- w7/. w - 5 a - 5 . r 0 v CO "3030 Log continued on next page Wi -' DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi T ^ Golder DRILLER Josh Anderson CHECKED 0Associates DATE 9/23/2014 SHEET 3 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,551,836 2 E 3,374,029 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,082 3 ft z v p U t=-r R. =p ELEV g w D w= < LITHOLOGY DESCRIPTION �O DEPTH w COMMENTS a W O (ft) § W cc 176-695 j ; (ML)CLAYEY SILT,low plasticity,trace fine • to medium • _ sand,pale yellowish brown(10YR 6/2),w<PL,moist,very _5- stiff,moderate HCI reaction 5 -A 550 - r - 1:2/, 56 4-57 75 ft Same as at 17 6 ft but strongly cemented ,F/ e 6 —5025 ry 60 lJ / J/ 1� ML r /j 4 —N20 //!�, co r. co F.• 65 0—cz 0 — �7 o_ z CO — / 5 5 CO - re I v —5015 N /p cool — / ii WI W z z '` '/ 5012 6 a 695-740 695 First water at695ft 70 0— SP (SAND),fine, poorly graded subangular, some silt 5 _ pale yellowish brown (10YR 6/2), non-plastic wet, SP 5 hr compact 0 v N W Log continued on next page w DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z der DRILLER Josh Anderson CHECKED Associate8 DATE 9/23/2014 SHEET 4 of 5 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,551,836 2 E 3,374,029 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,082 3 ft z p U z 0_ LITHOLOGY DESCRIPTION n2 p ELEV w a COMMENTS w" > J DEPTH W c0 (ft) 2 rc 695-740 SP (SAND), fine, poorly graded subangular, some silt, — pale yellowish brown (10YR 6/2), non-plastic, wet, —5010 compact SP 5 5008 3 74 0 Bonin'completed at 74 ft Boring completed at 74 ft, 75 0- 80 0- m O - a a z ▪ 850- a O O v N1 N W _ CO. W W 2 - 3 a - m CO Lj 900- Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi (�r DRILLER Josh Anderson CHECKED A ssoci tes DATE 9/23/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,549,868 6 E 3,374,723 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,079 2 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/23/14 14 35 TOTAL DEPTH 75 ft DATE COMPLETED 09/23/14 17 30 BOTTOM ELEVATION 5,004 2 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None p = ELEV a w z w > LITHOLOGY DESCRIPTION a OJ DEPTH w COMMENTS ❑ w 0 (ft) 2 ei ou _ 00-303 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2),w<PL,dry,soft,roots present in top - 0 5 ft,moderate HCI reaction 16 4 --5075 5 0 Bulk sample collected from cuttings 5-25 ft 22 5 ML in -- • - m f- o 5070 a a z 0) 100-_ a O re 2 U o — O 13 `J, 5 N FW — J m WI W z — 3 m — tr —5065 2.2 5 • 15l> Log continued on next page ant DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Golder DRILLER Josh Anderson CHECKED 3 Associates DATE 9/23/2014 SHEET 1 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,549,868 6 E 3,374,723 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,079 2 ft z O U a. ¢c ELEV LITHOLOGY DESCRIPTION n.OO w a re COMMENTS w > goa II DEPTH p w O (ft) 2 w 150 _ 00-30.3 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2) w<PL dry soft roots present in top 0 5 ft,moderate HCI reaction 22 5 18 2-18 7 ft Same as at 0 ft but with 1-2 cm layers of fine to medium sand with silt as described separated by —5060 —1cm of silt as described 20 0 16 5 ML -5055 25 0-_ 24 5 m m H a- - a z • — 28 5-29 ft Same as at 0 ft but with 2 cm layers of fine to 0 -5050 medium sand with silt as descnbed separated by—1cm of = silt as descnbed O 30 0 _ 5048 9 w 303-390 �� 303 (ML)CLAYEY SILT, low plasticity,some fine to medium /• sand,pale yellowish brown(10YR 6/2),w<PL,moist very stiff weakly cemented,no HCI reaction t 5 w 5 z -- ML a. / • — w Log continued on next page Loco, DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi GO .r DRILLER Josh Anderson CHECKED ASSOCicales DATE 9/23/2014 SHEET 2 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,549,868 6 E 3,374,723 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,079 2 ft z E. • O U n~.. ¢. LITHOLOGY DESCRIPTION a 9 ELEV W a COMMENTS w" >" iJ DEPTH r O w c� (ft) 2 iii EC iii - 303-390 - -5045 (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff,weakly cemented,no HCI reaction 350—_ / — ,s/f�1' ML 3 3 I/ 5 r 37-37 1 ft Caliche(CaCO3)layer,strong HCI reaction _ 3 " 50402 -5040 390-427 ,( t 39O (ML) sandy CLAYEY SILT fine to medium sand, low ,F•, ' plasticity,yellowish gray(5Y 7/2),w<PL,moist,very stiff, ; •, • 40 0—'_ weakly cemented,no HCI reaction �� : ML -- ../f 5 . / : 50365 _ 427-440 427 - (SP) SAND fine to medium, subangular, trace fines, yellowish gray(5Y 7/2),non-plastic moist,loose sP - 50352 3035 440-455 440 (CL) SILTY CLAY, medium plasticity some fine to medium subangular sand, light olive gray (5Y 5/2), CL 45 0—_ cohesive,w<PL,moist stiff very weak HCI reaction 5033 7 Ln 455-540 ////:/1/ 455 m - (ML)CLAYEY SILT,low plasticity some fine to medium - - sand,pale yellowish brown(10YR 6/2),w<PL moist very a stiff,moderately cemented,no HCI reaction 'G; 3 5 5 o /' a z - L7 ; ri U y v N• — ML urn 3030 k wi 50 Cr_ w a 5 - n o ; /J, W . Log continued on next page w DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi IV Golder DRILLER Josh Anderson CHECKED a Associates DATE 9/23/2014 SHEET 3 of 5 o. PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,549,868 6 E 3,374,723 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,079 2 ft v O O 0_ ¢ LITH0L0GY DESCRIPTION p ELEV W a E COMMENTS w" > 2 DEPTH r w c7 (ft) 2 CL 45.5-540 - (ML)CLAYEY SILT, low plasticity,some fine to medium - sand,pale yellowish brown(10YR 6/2),w<PL,moist,very ML _6- stiff,moderately cemented,no HCI reaction 5 „1/:: 5025 2 --5025 54 0-59 0 54 0 (SM) SILTY SAND, fine to medium, subangular, —25% fines pale yellowish brown (10YR 6/2), non-plastic, 55 Cr_ moist, compact, no HCI reaction, moderately cemented, . highly fissured SM 5 5 5020 2 —5020 59 0-75 0 ,�` 59 0 (ML)CLAYEY SILT, low plasticity,some fine to medium ,f' sand, yellowish gray (5Y 7/2), w<PL, moist, very stiff, 60 tr_ moderately cemented,no HCI reaction 5 -5015 m 1" F. 65 0- r ML C7 a 2- a- z - t7 _ 5 Cal 5 - First water at 67 ft wI / u1 - k CO. 3 - /./ 5010 a 70 0—'_ 5 n � 6 — ; - Log continued on next page Wi -'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt w �'• GOider DRILLER Josh Anderson CHECKED 4'AssOCiates DATE 9/23/2014 SHEET 4 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,549,868 6 E 3,374,723 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,079 2 ft z p U a ¢ LITHOLOGY DESCRIPTION a o ELEVa COMMENTS w > g DEPTH r (ft) 2 1(2 re 590-750 (ML)CLAYEY SILT,low plasticity,some fine to medium , sand, yellowish gray (5Y 7/2) w<PL, moist, very stiff, moderately cemented,no HCI reaction r • ML 6 _ p —5005 •/// 50042 isU 750 Romig completed at 75 ft Boma completed at 75 ft, 800- 8 F- ❑ - a a z a 850- a (0 re - U a 0 NI N Fw _ w W z - 3 a - m 0 90 0- tut DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z Golder DRILLER Josh Anderson CHECKED @SSOCi2UrC'S DATE 9/23/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-05 PROJECT NUMBER 140-7882A COORDINATES N 1,551,151 2 E 3,372,094 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,068 6 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/24/14 09 16 TOTAL DEPTH 59 ft DATE COMPLETER 09/24/14 11 02 BOTTOM ELEVATION 5,009 6 ft DRILL FLUIDS Nome HOLE DIAMETER 6 inches DRILL LUBRICANTS None O U I U ELEV o. <= LITHOLOGY DESCRIPTION a OO a COMMENTS w > 9 DEPTH o w O (ft) 2 OU 00-23.0 (ML)SILT,low plasticity,some fine sand,pale yellowish brown (10YR 6/2),w<PL, dry,firm, roots present in top 0 5 ft,moderate HCI reaction 21 4 3-23 ft Same as at 0 ft but very pale orange(10YR 8/2) -5065 50- 31 5 ML N Ir. - -5060 H a — z c2 'a 100 O ce 2 U• — 27 Co• - 5 w m _ U� U z — 3 _-5055 2 5 u1 150— Log continued on next page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi CGO r DRILLER Josh Anderson CHECKED • / ASSOCi1CeS DATE 9/24/2014 SHEET 1 of 4 o. PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-05 PROJECT NUMBER 140-7882A COORDINATES N 1,551,151 2 E 3,372,094 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,068 6 ft p U x LITH0L0GY DESCRIPTION d p ELEV w a COMMENTS w >" �S DEPTH ¢� w (ft) M 15u 00-230 (ML)SILT,low plasticity some fine sand,pale yellowish brown(10YR 6/2),w<PL, dry firm roots present in top - 0 5 ft,moderate HCI reaction 15-23 ft Same as at 0 ft but moist 5 - 17 6-18 1 ft Same as at 0 ft but no HCI reaction -5050 18-23ft Same asatOftbutstiff ML 200- 27 5 5045 6 230-590 230 (ML)CLAYEY SILT,low plasticity,some fine to medium 4 -5045 sand,pale yellowish brown(10YR 6/2),w<PL,moist,very l - stiff,moderately cemented,weak HCI reaction v .`j 250- _ 7 JL / 5 Lf - r r m r - 28-29 ft Same as at 23 ft but with CaCO3 veins,strong /) ML 5040 HCI reaction,weakly cemented 'o_ _ o: U — v O 30 0— N' LII 5 5 QZ f l A J 1 l - —5035 / -A Log continued on ne#page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi •`• Golder DRILLER Josh Anderson CHECKED 3 Associates DATE 9/24/2014 SHEET 2 of 4 o_ PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-05 PROJECT NUMBER 140-7882A COORDINATES N 1,551,1512 E 3,372,0945 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,068 6 ft O O a ¢ LITHOLOGY DESCRIPTION a O ELEV w a COMMENTS w� > ii 9 DEPTH r CO (ft) § ci w rc - 230-590 (ML)CLAYEY SILT, low plasticity,some fine to medium _ sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff,moderately cemented weak HCI reaction 350- ;f/' y� l 5 - : /r 5 i.:\t, -5030 40D- ! ' 1./. . ,r', 5 / ML --5025 1 r 450- ✓ m - / 5 0- a. - 0 o_ r o 2 ✓ 5020 O. �I !!/ First water at 49 ft w _ 49-4925 ft Same as at 23 ft but highly fissured and wet, y j bounded by moist silt above and below co 50 0- w z / 5 Q ( - 5 a - m ✓/ - o C/ c Log continued on next page col -= DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi LIZ '- GO r DRILLER Josh Anderson CHECKED �• 0Associates DATE 9/24/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-05 PROJECT NUMBER 140-7882A COORDINATES N 1,551,151 2 E 3,372,094 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,068 6 ft O U a ¢ LITHOLOGY DESCRIPTION a O ELEV w a COMMENTS w > DEPTH r w O C7 (ft) 2 230-590 (ML)CLAYEY SILT low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very _5- —so15 stiff,moderately cemented,weak HCI reaction 5 54-59 ft Same as at 23 ft but highly fissured,wet 550- f/ ML . 5 5 —5010 / 5009 6 59 0 gonna completed at 59 ft. Bonny completed at 59 ft, 600- N 0 650- O U a a Z _ U C7 K 2 U ,1 NI FW W� - W Z a 700- col 'an DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi � Golder DRILLER Josh Anderson CHECKED PAssociates DATE 9/24/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-06 PROJECT NUMBER 140-7882A COORDINATES N 1,551,800 2 E 3,372,060 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 9 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/09/14 14 34 TOTAL DEPTH 59 ft DATE COMPLETED-10/09/14 16 43 BOTTOM ELEVATION 5,011 9 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None p „ Hr o ELEV -,72Cw 0- LITHOLOGY DESCRIPTION o OJ DEPTH COMMENTS o w (ft) 2 w cc 0 00-16.0 (ML)SILT,low plasticity,some fine sand,dark yellowish brown(10YR 4/2),w<PL,moist,stiff,roots present in top --5070 0 8 ft,moderate HCI reaction 37 4 3 ft Same as at 0 ft but very pale orange(10YR 8/2) dry 4ft Same as at3ftbutverystiff 5 ---5065 5 6 2-8 2 ft Same as at 4 ft but light olive gray(5Y 5/2), 5 CaCO3 stnngers throughout ML m • - F- (0 a- a. z 100-^ 0 (7 a! • --5060 5 5 Lj W 3 a m = 28 5 _ 15 Log continued on ne#page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi � Golder DRILLER Josh Anderson CHECKED 4.Associates DATE 10/9/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-06 PROJECT NUMBER 140-7882A COORDINATES N 1,551,800 2 E 3,372,060 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 9 ft O O a ¢ ELEV LITHOLOGY DESCRIPTION a O vi COMMENTS w > g DEPTH i w c� (ft) W 15 U ML -75055 5054 9 160-207 160 (SP)SAND, fine to medium,poorly graded,subangular, trace non-plastic fines, pale yellowish brown (10YR - 6/2),non-cohesive,dry,very dense,weak HCI reaction z a6 5 - 176-182ft Same as at 16 ft but(SW)SAND,fine to coarse SP 19-20 7 ft Same as at 17 6 ft but with some fine gravel 20 0-- 5050 2 --5050 20 7-23 5 20 7 (ML)CLAYEY SILT,low plasticity,some fine to medium / 4 sand, pale yellowish brown (10YR 6/2), w<PL, moist, a 3 • hard, no HCI reaction 5 ML f '1 5047 4 23 5-24 0 • • 5046 9 SW - (SW) SAND, fine to coarse, well graded, subangular , some fine gravel, trace non-plastic fines, pale yellowish e brown (10YR 6/2)non-cohesive dry very dense, weak • HCI reaction t 25 0-r- 240-590 (ML)CLAYEY SILT,low plasticity,some fine to medium f , sand, pale yellowish brown (10YR 6/2), w<PL, moist, _-5045 hard, no HCI reaction ` - ` 5 71-5 t. o W a a z (0 • -- ML W • re 2 U b 300 • NI N --5040 5 w 5 z N r e • N r r - Log continued on ned page col R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi C-\: GOlder DRILLER Josh Anderson CHECKED Associates DATE 10/9/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-06 PROJECT NUMBER 140-7882A COORDINATES N 1,551,800 2 E 3,372,060 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 9 ft O O aI LITHOLOGY DESCRIPTION ELEV w a s COMMENTS w > L9 DEPTH ci w t7 (ft) § W -- 240-590 (ML)CLAYEY SILT,low plasticity some fine to medium /274 sand, pale yellowish brown (10YR 6/2), w<PL moist, hard, no HCI reaction 350- !, . --5035 y5 - 5 40 0- r:../ --5030 / /' 5 •/ / ML it r 450- 4 m 5025 45 5-46 5 ft Same as at 24 ft but strongly cemented strong HCI reaction 5 � 5 Cl. a z a' /./ CL U N ! W W _ ::// Wi 500- 2 2 /. _1 a --5020 50 8-51 8 ft Same as at 24 ft but highly fissured r ,/; 5 m ti o f W Log continued on next page col DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt LIZ Golder DRILLER Josh Anderson CHECKED �#ASSOCiates a- DATE 10/9/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-06 PROJECT NUMBER 140-7882A COORDINATES N 1,551,800 2 E 3,372,060 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 9 ft z v p U z w < LITHOLOGY DESCRIPTION a O DEP H w COMMENTS w (ft) 2 w 240-590 - (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL moist _5_ hard no HCI reaction 5 /. First water at 54 ft 54-59ft Same as at 508ft but wet 55 0- !!! ML --5015 5 5 w/ 5011 9 59 0 Poring completed at 59 ft, gonna completed at 59 ft, 600— N m 65 0— ❑ a z ci C7 ce U v NI - W W _ W 2 a ol 700— m 0 y col — DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Cr�..GO1ter DRILLER Josh Anderson CHECKED 3 Associates DATE 10/9/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-07 PROJECT NUMBER 140-7882A COORDINATES N 1,551,824 2 E 3,373,357 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,077 1 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 1W10/14 12 55 TOTAL DEPTH 74 ft DATE COMPLETED-10/10/14 16 04 BOTTOM ELEVATION 5,003 1 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None g p Q ELEV 0- LITHOLOGY DESCRIPTION a p vi a COMMENTS > J DEPTH w c0 (ft) ce 00 00-95 (ML)SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,dry,stiff,roots present z in top 0 6 ft,moderate HCI reaction 31 5075 4 3 2-9 5 ft Same as at 0 ft but very pale orange(10YR 8/2) ML 5 5 - 5070 - 77-95f Same as at32ftbutverystiff I- ❑ -_ a 5067 6 95-160 95 • 10 0 (SP)SAND,fine to medium,poorly graded,subangular, trace non-plastic fines, very pale orange (10YR 8/2),non-cohesive,dry,very dense,weak HO reaction x U• -_ 0 3 NI 5 -L5065 SP 3 0- c0 ✓ 14 - 16 ft Same as at 9 5 ft but (SW) SAND, fine to e3 N coarse some fine gravel 150 Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi zr DRILLER Josh Anderson CHECKED ASSOC1c�LC'S DATE 10/10/2014 SHEET 1 of 5 EL PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-07 PROJECT NUMBER 140-7882A COORDINATES N 1,551,824 2 E 3,373,357 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,077 1 ft pI U a ¢ LITHOLOGY DESCRIPTION a 0 ELEV a aw COMMENTS w > i-9 DEPTH r w O (ft) § iii re 15U — SP 5061 1 160-179 160 (ML)SILT,low plasticity,some fine to medium sand,very pale orange (10YR 8/2), w<PL, dry, very stiff, roots ML A3- - present in top 0 6 ft,moderately cemented,moderate HCI 3060 5 reaction 5059 2 179-427 179 (ML)CLAYEY SILT low plasticity some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL, moist, >,' hard, no HCI reaction 1, . r r. ; 20 t),- //y 207-210 (SP)SAND, fine to medium,poorly graded,subangular, /// trace non-plastic fines, very pale orange (10YR a 77 8/2),non-cohesive,dry,very dense,weak HCI reaction 5 —5055 r r 25 07- ML 'J.) / 5 m ^`5050 ' a • o. ,/ z 0 ` cc 29-31 ft Same as at 17 9 ft but moderately cemented / I 0• 3 0Z 0 < oil N � `/:col w r `, 5 Z J a —5045 f r m /f 0 ,a W Loq continued on next page col -'-R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w Golder DRILLER Josh Anderson CHECKED 3 �AvAssociates DATE 10/10/2014 SHEET 2 of 5 a a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-07 PROJECT NUMBER 140-7882A COORDINATES N 1,551,824 2 E 3,373,357 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,077 1 ft O a ELEV a x LITHOLOGY DESCRIPTION o a COMMENTS w > DEPTH _IL' W CD (ft) re 179-427 (ML)CLAYEY SILT,low plasticity,some fine to medium sand pale yellowish brown (10YR 6/2) w<PL, moist, hard, no HCI reaction J 35 0-- 1, 34-35 5 ft Same as at 17 9 ft but moderately cemented f l 5 a!J 5 115040 f 37-41 ft Same as at 17 9 ft but with CaCO3 throughout /Z ." ML ✓ JJJ 40 0r- 5 „1" 5 3035 50344 427-495 427 (SP)SAND fine to medium,poorly graded,subangular trace non-plastic fines, yellowish gray (5Y 7/2),non-cohesive moist,very dense,weak HCI 45Osri "- m - SP 0 44 (7 5 a '`5030 CD as O c - U U a NI -- N 5027 6 495-740 495 mi 50�- (ML)CLAYEY SILT low plasticity,some fine to medium 3 sand, pale yellowish brown (10YR 6/2) w<PL, moist, 5 hard, no HCI reaction O- — ML 5 a - m y� 5025 to y ./ Log continued on next page Wi - DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z Golder DRILLER Josh Anderson CHECKED Associates DATE 10/10/2014 SHEET 3 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-07 PROJECT NUMBER 140-7882A COORDINATES N 1,551,824 2 E 3,373,357 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,077 1 ft O U I ¢ z igi I- < LITHOLOGY DESCRIPTION OO DEPTH r �_ COMMENTS 0 (ft) § 8 w re 495-740 !` (ML)CLAYEY SILT,low plasticity,some fine to medium .{ sand, pale yellowish brown (10YR 6/2), w<PL, moist, -S- hard, no HCI reaction 5 55 0-- ,I," ` / 5 5 `5020 r �1 60 0-- y r / _5_ 5 ML -5015 / / _ WI m _ 65 0-"- o ; a a Z - (7 5 w Cal 5 rc _ `5010 /l a 1 y + First water at 67 3 ft Ni 67 3-68 1 ft Same as at 49 5 ft but wet ! u, 03. w w z 69-70 ft Same as at 49 5 ft but saturated,moist above, i a moist below 70 Cr— 5; 5 m 0 � J 7Log continued an next page col DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi 4t': GOider DRILLER Josh Anderson CHECKED a °Assoc1z te& DATE 10/10/2014 SHEET 4 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-07 PROJECT NUMBER 140-7882A COORDINATES N 1,551,824 2 E 3,373,357 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,077 1 ft z v p U ELEV 0-x ¢ LITHOLOGY DESCRIPTION 9 w a COMMENTS w > �9 DEPTH r� W (ft) 2 8 re 495-740 .l (ML)CLAYEY SILT, low plasticity,some fine to medium ,+/ -`5005 sand, pale yellowish brown (10YR 6/2), w<PL, moist, hard, no HCI reaction ML / 5003 1 74 0 Bonny completed at 74 ft, Boring completed at 74 ft, 75 0- 80 0- 0 - f- ❑ a a z a, 85 0- a Cr x 0 v NI N Fw w' w z - 3 0- C;)m fA k 90Cr- DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi DRILLER Josh Anderson CHECKED a AssociatGQ1der es DATE 10/10/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-08 PROJECT NUMBER 140-7882A COORDINATES N 1,550,488 2 E 3,372,720 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 9 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/24/14 15 09 TOTAL DEPTH 59 ft DATE COMPLETED 09/24/14 17 07 BOTTOM ELEVATION 5,007 9 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None O ELEV a. LITHOLOGY DESCRIPTION w a COMMENTS w > J DEPTH w (ft) 2 re ou 00-180 (ML)SILT,low plasticity,some fine sand,pale yellowish _ brown (10YR 6/2),w<PL, dry, soft, roots present in top 0 5 ft,weak HCI reaction _-5065 11 2 4 - 2 5-18 ft Same as at 0 ft but very pale orange(10YR 8/2) 4-18ft Same as at0ft but firm 5 0- Bulk sample collected from cuttings 5-25 ft 21 5 --5060 ML - O - a a a 2 100-" t7 10-18 ft Same as at 0 ft but moist _ U 1.7 5 uJ I _-5055 m w� w 129-18ft Same as at 0 ft but stiff -- O 21 5 k• 15 0— Log continued on next page W. TIMM DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt r DRILLER Josh Anderson CHECKED 4.Associates DATE 9/24/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-08 PROJECT NUMBER 140-7882A COORDINATES N 1,550,488 2 E 3,372,720 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 9 ft p U a LITHOLOGY DESCRIPTION a OJ DEPTH COMMENTS ❑ w (ft) 2 8 15u 00-180 (ML)SILT low plasticity,some fine sand,pale yellowish brown (10YR 6/2) w<PL dry soft, roots present in top - 0 5 ft,weak HCI reaction ML -3050 3 11 5 5048 9 180-590 180 (ML)CLAYEY SILT,low plasticity some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist very - stiff moderately cemented, no HCI reaction 19-22 ft Same as at 18 ft but moderate HCI reaction 20 0— /r 5 5 _"-5045 24-59 ft Same as at 18 ft but moderate HCI reaction _ r 25 0— . ML 5 5 _-5040 :>/:/1; o_ r �- C7• - a r -- 0 r r re E, 30 0• — NI y f m 39 � 5 z r --5035 j CO 0 o !ll FN Log continued on next page 7 m, - DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt • � . Golder DRILLER Josh Anderson CHECKED CL''. DATE 9/24/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-08 PROJECT NUMBER 140-7882A COORDINATES N 1,550,488 2 E 3,372,720 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 9 ft z I p O I-- • a LITHOLOGY DESCRIPTION ° a DEPTH r COMMENTS o w 0 (ft) -. 8 ce -- 180-590 / • (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff,moderately cemented, no HCI reaction 350- 34-35 5 ft Same as at 18 ft but weakly cemented 1:)% 35 5 3030 37 3 ft 1 inch diameter CaCO3 clast _- / //: • e , - N' J 40 0- , ./; -/./ _,- 45 1 5 _-5025 r/ � ML 43-44 ft Same as at 18 ft but hard r / r Y yam. . // 45 D- N // CO S o 5 2 / _-5020 Jj r a 1' ii- C7 - Q 2 lE /: C llf Ni• - ; u! G 49-52 ft Same as at 18 ft but weakly cemented Wi 500- 3 w ` 5 m • _-5015 ch Y Log continued on ne#page Wi -'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w �`• r DRILLER Josh Anderson CHECKED AIF Associates DATE 9/24/2014 SHEET 3 of 4 o_ PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-08 PROJECT NUMBER 140-7882A COORDINATES N 1,550,488 2 E 3,372,720 8 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 9 ft U ELEV a.,g ¢c LITHOLOGY DESCRIPTION a p w wa COMMENTS w >" DEPTH P2 W (ft) re 180-590 7 • - (ML)CLAYEY SILT low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL moist very r a stiff moderately cemented, no HCI reaction 5 53-54 ft Same as at 18 ft but hard — 55 0- ML 3 5 --5010 57-59 ft Same as at 18 ft but hard with—0 5 cm CaCO3 . clasts throughout,strong HCI • . First water at 58 ft • 5007 9 59 0 Bonna completed at 59 ft, Banng completed at 59 ft, 600- m ▪ 65 0- 0 a a z - U U re • — x U 0 Ni - w' _ w a 70 0- N w Wi -'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w —'• Golder DRILLER Josh Anderson CHECKED • Associates DATE 9/24/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-09 PROJECT NUMBER 140-7882A COORDINATES N 1,549,878 5 E 3,373,396 4 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,067 9 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/25/14 09 10 TOTAL DEPTH 64 ft DATE COMPLETED 09/25/14 12 28 BOTTOM ELEVATION 5,003 9 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None g O U I a ¢ LITHOLOGY DESCRIPTION p ELEV a COMMENTS w" > qQ S DEPTH w o (ft) 2 re 0 00-182 (ML)SILT,low plasticity,some fine sand,pale yellowish brown (10YR 6/2),w<PL, dry,soft, roots present in top 0 6 ft,moderate HCI reaction - 6 4 13065 5 0� 29 5 7-18 ft Same as at 0 ft but firm ML ^5060 N F O (0 a 9-15ft Same as at 0 ft but sandy SILT,fine to medium z a 100— m o 17 m 5 U a, m w 3• T°55 m n 5 • 150 Log continued on need page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w ^' Golder DRILLER Josh Anderson CHECKED CASSOci21les DATE 9/25/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-09 PROJECT NUMBER 140-7882A COORDINATES N 1,549,878 5 E 3,373,396 4 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,067 9 ft O U _i_ = ELEV a w w, <c LITHOLOGY DESCRIPTION OJ DEPTH w COMMENTS CI w c7 (ft) re 15u 00-182 (ML)SILT,low plasticity,some fine sand,pale yellowish brown (10YR 6/2),w<PL, dry,soft, roots present in top — 0 6 ft,moderate HCI reaction ML 34 _ 5 —5050 5049 7 182-490 182 (ML)CLAYEY SILT,low plasticity,some fine to medium 7 < — sand,pale yellowish brown(10YR 6/2),w<PL,moist stiff �,� no HCI reaction . ' ,/r 19-21 ft Same as at 18 2 ft but moderately cemented 20 0—r- • F'' — 5 — —5045 — it 24-27 ft Same as at 18 2 ft but moderately cemented V r 25 0- / -r- / ML r _,- 5 m i- 0 a -'-504027 7-28 3 ft CaCO3 throughout,strong HCI reaction ..� 0- Z ../ a — r cc l~ Cr / f U Cr Ni 30 0— 29 8-33 5 ft Same as at 18 2 ft but sandy CLAYEY SILT, w fine to coarse 7• w D m� l w 5 w — 1 m —5035 o N 33-49 ft Same as at 18 2 ft but very stiff : ! w Loq continued on next page w -'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi LIZ Golder DRILLER Josh Anderson CHECKED ��ASSOCi211t@S DATE 9/25/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-09 PROJECT NUMBER 140-7882A COORDINATES N 1,549,878 5 E 3,373,396 4 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,067 9 ft p F U- r _ TO ELEV gw w <a LITHOLOGY DESCRIPTION a OJ DEPTH COMMENTS ❑ w 0 (ft) 2 cc — 182-490 (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist stiff, no NCI reaction 35 0_ • i — 5 yi—5030 r // 40 0— 7 1.2> r / ' ' ' ML 5 - /, - f 5 rir —5025 -' 1./ 450— X in c 5 (7 a r a — z o r J, CI //". . cc —5020 2 U v N _ /), 50189 m 490-530 490 (SP) SILTY SAND, fine to medium, subangular, pale yellowish brown (10YR 6/2), non-cohesive, moist, mi 50 0— compact w w z 3P 5 a m m N- 0 w Log continued on next page col DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt L' Goer DRILLER Josh Anderson CHECKED • °Assoc.1atte8 DATE 9/25/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-09 PROJECT NUMBER 140-7882A COORDINATES N 1,549,878 5 E 3,373,396 4 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,067 9 ft z O U E ¢ LITHOLOGY DESCRIPTION o ELEV a Z COMMENTS w" > El DEPTH FW 5014 9 SP '-5015 53 0 5 530-640 ! 5 (ML)CLAYEY SILT,low plasticity,some fine to medium • sand,pale yellowish brown(10YR 6/2),w<PL,moist,very stiff, no HCI reaction 55 0-/- ;7'./ 5 5 '-solo Dniler noted harder dnilmg ML 59-64ft Same as at 53ftbutwet 60 0� First water at 59 8 ft Appears like siltstone in the core 59 8-64 ft Same as at 53 ft but hard / barrel but crumbles to soil under moderate hand pressure 5 '3005 j f Bonne completed at 64 ft, Bonne completed at 64 ft 65 0- 0 (7 a a z - (0 a' a rr - x — NI W co, _ w z a 700- n N Fw J w 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt W Golder DRILLER Josh Anderson CHECKED °Associates DATE 9/25/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-10 PROJECT NUMBER 140-7882A COORDINATES N 1,551,1797 E 3,374,6757 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,083 6 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/25/14 14 08 TOTAL DEPTH 84 ft DATE COMPLETED 09/29/14 14 16 BOTTOM ELEVATION 4,999 6 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None z p U Fr• O ELEV ccui 7 w < LITHOLOGY DESCRIPTION o 9 DEPTH COMMENTS ❑ w (ft) M z O 00-228 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2),w<PL,dry,firm,roots present in top 0 7 ft,moderate HCI reaction 29 4 —5080 5 0— Bulk sample collected from cuttings 5-25 ft 29 5 ML N —5075 H O - a a z - tD 10 0— a _ x U ' 25 Ni 5 co W k - CD. w' w - 3 —5070 - r 19 5 ur 150— Log continued on next page Wi = DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi s(Golder DRILLER Josh Anderson CHECKED Associates DATE 9/29/2014 SHEET 1 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-10 PROJECT NUMBER 140-7882A COORDINATES N 1,551,179 7 E 3,374,675 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,083 6 ft z • O O -r ELF a Q LITHOLOGY DESCRIPTION d o vi a COMMENTS w > qQ 9, DEPTH O w c� (ft) 2 8 15 00-22.8 (ML) SILT, low plasticity, some fine sand, very pale orange(10YR 8/2) w<PL dry firm,roots present in top - 0 7 ft,moderate HCI reaction 15-28 ft Same as at 0 ft but moist is 5 -5065 ML 200- 35 5 5060 8 - 228-473 226 (ML)CLAYEY SILT low plasticity some fine to medium 5060 sand pale yellowish brown(10YR 6/2) w<PL moist stiff no HCI reaction 24-27 ft Moderately cemented 250- s 0 c� _ zr ML -5055 re — _ r O E, 30 0-- NI W - ml S w 5 2 a- Nm �J v k -S050Log continued on next page w DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Golder DRILLER Josh Anderson CHECKED < .Associates DATE 9/29/2014 SHEET 2 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-10 PROJECT NUMBER 140-7882A COORDINATES N 1,551,179 7 E 3,374,675 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,083 6 ft z • p O _I a z w+✓ <c LITHOLOGY DESCRIPTION a OJ DEPTH w COMMENTS ❑ w a (ft) 2 al - 228-473 (ML)CLAYEY SILT,low plasticity,some fine to medium sand pale yellowish brown(10YR 6/2),w<PL,moist,stiff - no HCI reaction / 350- 34-36 ft Moderately cemented // - ;✓i - 5 5 r / -5045 38 9-39 8 ft CaCO3 throughout 40 D- ..,:z/./ yy ML 5 5 - 41 5-47 3 ft Same as at 22 8 ft but very stiff //://: A. A —5040 ; : ,l� ✓ . r 450- /: m ~o X a 5 a 5 a a - z . -,l 5036 3 O 47 3 473-480 c (SP)SAND fine to medium,poorly graded,subangular 5035 6 SP co - yellowish gray(5Y 8/1), moist,hard,strongly cemented, , 48 0 = 1 strong HCI reaction I O —5035 48 0-80 0 Ni - (ML)CLAYEY SILT,low plasticity,some fine to medium The entire 49-54 ft run has moderately cemented silt k sand,pale yellowish brown(10YR 6/2) w<PL,moist,very1,2 9 throughout stiff, no HCI reaction chunks co WI 50 0— w ML i'y 5 5 m 0 /' Log continued on next page 7 col - DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi T C'1-Golder DRILLER Josh Anderson CHECKED AvA3sOCi21tes DATE 9/29/2014 SHEET 3 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-10 PROJECT NUMBER 140-7882A COORDINATES N 1,551,179 7 E 3,374,675 7 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,083 6 ft O U o > LITHOLOGY DESCRIPTION a ELEV w COMMENTS DEPTH CO (ft) § W re 480-80A (ML)CLAYEY SILT low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist very 5 stiff, no HCI reaction "3030 550- 5 5 -5025 600- 5 5 ML -5020 - Pause borehole at 64 ft,9/25/2014 Resume borehole at 64 ft,9/29/2014 m - 65 0- c7 - a z ci a 5 (9 - 5 < O U NN W - W co, -5015 w _ W a 700— 5 5 O N W Log continued on next page w 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi r r DRILLER Josh Anderson CHECKED Associates DATE 9/29/2014 SHEET 4 of 5 a PROJECT : Pawnee Waste Site Characterization RECORD OF BORING BH -2014-10 PROJECT NUMBER : 140-7882A COORDINATES: N : 1 , 551 , 179. 7 E: 3, 374 , 675. 7 LOCATION : Weld County. Colorado GROUND SURFACE ELEVATION : 5, 083.6 ft z -- O O I -J r = O ELEV. w Z E- 2 j LITHOLOGY DESCRIPTION a O a COMMENTS DEPTH w a (ft) w cc 48.0 - 80.0 , (ML) CLAYEY SILT, low plasticity, some fine to medium 0 .�" First water at 71 .5 ft sand , pale yellowish brown ( 10YR 6/2), w< PL, moist, very ; stiff, no HCI reaction y. /70 5 . . ! . 010 . . , , i i 75. • , ! . ML - 5 r , . 1 ! • .l 7 ~ 14 : I /: . Th005 • - r 1 .�' �: 5003.6 80.r 80.0 - 84.0 • .- ! - 80.0 _ (ML) talcous CLAYEY SILT (SOAPSTONE), low • plasticity, pinkish gray (5YR 8/1 ) . w< PL. moist, very stiff, ' I ' ; ' no HCI k1 . -t • 81 - 81 .3 ft: Same as at 80 ft but fissured and wet "• : 1 . 5 I • 1 •- 1-• ML•• •_ • . f • • " • I I - Ln •I • I • .J -5000 • F- • • 4999.6 0 C7 84.0 act:. Boring completed at 84 ft. Boring completed at 84 ft. z (9 a 85.C O d Q 0 Tr E NI D m I w w z — Q a ao co N. 0 Tr 90.0 m Ili �_I : DRILLING CONTRACTOR: Site Services GEOLOGIST: Matt Somogyi z fr- C : Golder DRILLER: Josh Anderson CHECKED: a A Associates DATE: 9/29/2014 SHEET 5 of 5 a _ PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-11 PROJECT NUMBER 140-7882A COORDINATES N 1,551,180 8 E 3,373,344 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,073 8 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 09/30/14 08 40 TOTAL DEPTH 59 ft DATE COMPLETER 09/30/14 10 37 BOTTOM ELEVATION 5,014 8 ft DRILL FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None " O O �a Q LITHOLOGY DESCRIPTION a S ELEV w a COMMENTS S DEPTHo r w O (ft) ou 00-17A (ML)SILT,low plasticity,some fine sand,pale yellowish brown (10YR 6/2),w<PL,dry, firm, roots present in top 0 6 ft,moderate HCI reaction _ 1B 4 Bulk sample collected from cuttings 0-15 ft -5070 50- 5 5 ML a, F- 3065 O - (0 a 9-17ft Same as at0ftbutmoist z _ 10 a— 9-19 ft CaCO3 throughout some fine to medium gravel, very stiff ce < — x U — v 18 5 w — a, m wl - w - 3 a —3060 2 5 w 15D Log continued on need page °°i DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi GOr DRILLER Josh Anderson CHECKED ASSOC1TteS DATE 9/30/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-11 PROJECT NUMBER 140-7882A COORDINATES N 1,551,180 8 E 3,373,344 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,073 8 ft I O U -I o~.= a= LITHOLOGY DESCRIPTION a ELEV w a COMMENTS w >" L 9 DEPTH r cm w o (ft) 2 8 rt 150 00-170 (ML)SILT,low plasticity,some fine sand pale yellowish - brown(10YR 6/2) w<PL dry firm roots present in top - 0 6 ft moderate HCI reaction ML - 5056 8 2 170-590 170 5 (ML)CLAYEY SILT,low plasticity,some fine to medium - sand,pale yellowish brown(10YR 6/2),w<PL,moist stiff, - no HCI reaction -5055 18 4-19 ft CaCO3 throughout 19-21 ft Moderately cemented silt ` YY 20 Cr •,y� 8 a/ 5 ,,,E•: — /./ —solo 24-27 ft Moderately cemented,discing / 25 0- `, ML J. , 5 N - / O - / 0 z 0 O 'a -5045 O re 29-31 5 ft Moderately cemented,discing IO / ' < 0 30 0- N W _ - m. 47 w y 5 z - - if e 32 - 34 ft CaCo3 throughout, moderate HCI reaction, • m 32 3 - 33 ft Strongly cemented, CaCO3, strong HCI — reaction 0 • —5040Log continued on need page Wi - - DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi V .' Golder DRILLER Josh Anderson CHECKED Associates DATE 9/30/2014 SHEET 2 of 4 o. PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-11 PROJECT NUMBER 140-7882A COORDINATES N 1,551,180 8 E 3,373,344 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,073 8 ft z Q.• O U a j LITHOLOGY DESCRIPTION a a DEPTH COMMENTS ❑ w (ft) 2 bU4U - 170-590 (ML)CLAYEY SILT,low plasticity,some fine to medium sand,pale yellowish brown(10YR 6/2),w<PL,moist stiff, - no HCI reaction 35 0- 5 5 5035 40 0- Al 5 ML 43-44 ft Same as at 18 ft but hard -5030 45 0- In _ m _ 0 5 (5 — 5 a- • —z • — t7 re 2 U —5025 NI - FW w i 50 0— w 3 _ 5 5 Log continued on next page WI '- DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Golder DRILLER Josh Anderson CHECKED Associates DATE 9/30/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-11 PROJECT NUMBER 140-7882A COORDINATES N 1,551,180 8 E 3,373,344 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,073 8 ft O U aEV LITHOLOGY DESCRIPTION a p �E w COMMENTS PTH w (ft) 2 170-590 (ML)CLAYEY SILT,low plasticity,some fine to medium 7 sand,pale yellowish brown(10YR 6/2) w<PL,moist,stiff, 5 no HCI reaction —5020 . 55 0— ✓, First water at 55 ft 55-58 ft Same as at 17 ftbut wet ML 28 5 JJ 3015 - / 50148 59 0 Bonng completed at 59 ft, Bonng completed at 59 ft, 600- N_ 1_ 65 0— (.9 a. 0 z _ t0 a_ a cc I — U NI W m WI _ W z a 70 0- v N - W Wi -' DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi 't''-Golder DRILLER Josh Anderson CHECKED °Associate3 DATE 9/30/2014 SHEET 4 of 4 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-12 PROJECT NUMBER 140-7882A COORDINATES N 1,551,158 4 E 3,372,730 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 3 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/13/14 15 35 TOTAL DEPTH 59 ft DATE COMPLETED 10/13/14 17 32 BOTTOM ELEVATION 5,011 3 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None a x ¢~ ELEV LITHOLOGY DESCRIPTION a Op w COMMENTS w" > riJ DEPTHo ¢� w (7 (ft) 2 0 00-120 -5070 (ML) SILT, low plasticity, some fine to medium sand, moderate yellowish brown(10YR 5/4),w<PL,moist stiff, roots present in top 0 8 ft,moderate HCI reaction 1 2 ft Same as at 0 ft but very pale orange(10 YRB/2) 34 4 5 0— Bulk sample collected from cuttings 5-15 ft -5as5 ML 5 - 7 ft Same asa t 1 2 ft but very stiff N I- 0 - 0 0 z ci -, 100- 0 a Soso tY 2 nr v 25 NI 5 w 5058 3 - 120-152 • < 120 ml (SW) SAND, fine to coarse, well graded subangular, some non-plastic fines very pale orange (10 YR8/2) • - 3 — non-cohesive dry very dense,weak Hclreaction • SW - - m 4 5 • 150— Log continued on next page WI ,oixDRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyl t• r DRILLER Josh Anderson CHECKED A-A_L DATE 10/13/2014 SHEET 1 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-12 PROJECT NUMBER 140-7882A COORDINATES N 1,551,158 4 E 3,372,730 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 3 ft p U a <� LITHOLOGY DESCRIPTION a 9 DEPTH r COMMENTS w 0 (ft) 2 re 15 0 • 5055 1 3055 152-590 152 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL, moist, hard, no HCI reaction A_ 5 200- 5050 21 -59 ft Alternating intervals of moderately cemented and uncemented(ML)CLAYEY SILT as described at 15 2 5 ft ML 250- "5045 5 - 0 I- 0 0 _ a a _ z t, a - CD o - E, 30 0- NI -5040 — co _ 5 W 5 W 3 — a _ 0 v _ Log continued on next page m, -'x` DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi m : Golder DRILLER Josh Anderson CHECKED ArAssociates DATE 10/13/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-12 PROJECT NUMBER 140-7882A COORDINATES N 1,551,158 4 E 3,372,730 0 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 3 ft z v p U a z a� ¢ ELEV W LITHOLOGY DESCRIPTION az a COMMENTS > 9 DEPTH w c.9 (ft) 2 CC 152-590 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL moist, hard no HCI reaction 350- -5035 5 5 400- -5030 5 5 ML 450- -5025 N • - 0 5 CD 5 a - - z ci - a K U N▪I N - w wi 50 0- 3020 5 5 a• - m 0 v — w Log continual on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi `` DRILLER Josh Anderson CHECKED Associates�A. r DATE 10/13/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-12 PROJECT NUMBER 140-7882A COORDINATES N 1,551,1584 E 3,372,7300 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,070 3 ft p O -J O ELEV a ¢ LITHOLOGY DESCRIPTION za w a COMMENTS o w > 9 DEPTH r w O (ft) 2 cc 152-590 - (ML)CLAYEY SILT,low plasticity,some fine to medium 3, sand pale yellowish brown (10YR 6/2), w<PL, moist, _5- hard, no HCI reaction 5 / First water at 53 7 ft - 537-59ft Same as at 152ftbutwet ' A r ; 550- -5015 J/f ML 5 5 , 5011 3 59 0 Boring completed at 59 ft, Boring completed at 59 ft, 600- U, 65 0- 0 CD a a z - CD a- (7 C) U 0 NI N - FW CO W� _ w z a m 70 0— 0 rn w w DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z Golder DRILLER Josh Anderson CHECKED Associates DATE 10/13/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-13 PROJECT NUMBER 140-7882A COORDINATES N 1,551,188 E 3,374,031 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5077 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/07/14 1012 TOTAL DEPTH 80 ft DATE COMPLETED 10/08/14 09 30 BOTTOM ELEVATION 4997 ft DRILLING FLUIDS None HOLE DIAMETER 6 inches DRILL LUBRICANTS None cv >- .c LITHOLOGY DESCRIPTION a ELEV p w ° N p REMARKS m ❑ DEPTH 3 0 w qQ O (ft) ❑d m a W cc Ou UU-19.0 (ML)SILT,low plasticity,some fine to medium sand,dark yellowish brown(10YR 4/2),w<PL,dry stiff,roots present in top 0 5 ft,moderate HCI reaction 3-5-8-8 13 yt 2 -5075 1 7-19 ft ft Same as at 0 ft but very pale orange(10YR 8/2) 50- 5 ft Same as at 1 7 ft but firm 2-3-4-5 7 1265 —5070 ,C - ML H a a _ z O - • 100- - 2 U v - NI - 2-6-6-6 12 t2t W 3065 m. - W z a• _ 0 — z — • 15D— Log continued on next page l :: T DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyt DRILLER Josh Anderson CHECKED °ASSOCiateS DATE 10/8/2014 SHEET 1 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-13 PROJECT NUMBER 140-7882A COORDINATES N 1,551,188 E 3,374,031 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5077 ft c U a > nr '° LITHOLOGY DESCRIPTION a O ELEV a co a > O u, o N o REMARKS o 3, DEPTH a a "1 O (ft) i re 15 u U U-19 U 15-1/ft Brass liner samples collected (ML)SILT,low plasticity,some fine to medium sand,dark yellowish brown(10YR 4/2),w<PL,dry,stiff,roots present 15014 50/4 1 35 in top 0 5 ft, moderate HCI reaction continued from previous page —5060 15 ft Same as at 1 7 ft but hard ML 7 5057 6 —1 9 190 (SP)SAND,fine to medium, poorly graded,subangular, - trace non-plastic fines, pale yellowish brown (10YR 6/2),non-cohesive,moist,very dense no HCI reaction 20 0- 934- ° 114 50/5 50/ 14 —5055 25 0- - 25 4-30 6 ft Same as at 19 ft but(SW)SAND,fine to coarse,compact 13-13 25 2 SP 25 7-25 75 ft Same as at 25 4 ft but brownish gray(5YR 3050 4/1) I- — 0 26 45-26 55 ft Same as at 25 4 ft but grayish black(N2) a - a z t7 — co• _ re x• - O o _ NI ,s3 30Cr- co, w — 30 6 ft Same as at 19 ft but dense 9 21- z 44 23-22 2 a• -5045 31 45-31 5 ft Same as at 19 ft but brownish gray(5YR c 4/1) m r o _ z - ull - Loq continued on next page CO wl DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi 3 j CHECKED Associates DRILLER Josh Anderson DATE 10/8/2014 SHEET 2 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-13 PROJECT NUMBER 140-7882A COORDINATES N 1,551,188 E 3,374,031 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5077 ft c U re ar '°z LITHOLOGY DESCRIPTION o_O ELEV a Inc 5 a') DEPTH o N❑REMARKS w O (ft) m a w is 190-355 - (SP)SAND fine to medium,poorly graded,subangular, trace non-plastic fines, pale yellowish brown (10YR - 6/2),non-cohesive, moist, very dense, no HCI reaction SP continued from previous page 350- 5041 1 - 355-500 355 (ML)CLAYEY SILT, low plasticity,some fine to medium 7"• 7-13- 41 2 sand, pale yellowish brown (10YR 6/2), w<PL, moist, 28-50 2 hard, no HCI reaction —5040 _ 36-361 ft (SP)SAND,fine to medium, brownish gray r , (5YR 4/1) r' ;;4 / 40 0- ;r:7:(' 40-42 ft Brass liner samples collected 15— -20. 45 25-50 2 -5035 i y� d (' ML dr- 1/ y/ in 45 0- 4. � CZ - � 15 50/5 50/5-N- I- '. ,, ❑ - o 45 8-46 4 ft Same as at 35 5 ft but strongly cemented a '- A. z —5030 S - U st N t 7 - . WI - y:� z ' . 5026 6 3 50 0- -50 0 740 !!//jy/ 50 a (CL) SILTY CLAY, medium plasticity, some fine to 1%/y medium sand, moderate yellowish brown (10YR 5/4), co cohesive,w<PL moist hard no HCI reaction 44-50 >So 175 r- - CL z -5025 I 52 ft augers gnnding,duller noted really hard wi / dnlhng 9 k Log continued on next page 7 wi t' rsO1�T P DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi �j DRILLER Josh Anderson CHECKED DRILLER DATE 10/8/2014 SHEET 3 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-13 PROJECT NUMBER 140-7882A COORDINATES N 1,551,188 E 3,374,031 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5077 ft c re U_ L g =c� ELEV w ` w m= ,= LITHOLOGY DESCRIPTION a p w a a° N p REMARKS ❑ m 9 DEPTH a m a U w c7 (ft) 2 (CL)- I U ////l SILTY CLAY, medium plasticity,h some fine ), %/� medium sand, moderate yellowish brown (10YR 5/4), cohesive,w<PL,moist,hard, no HCI reaction continued j from previous page 55 0- 27-50/4 50/4 8 —5020 600- 30-50/5 50/f.0 99 61 ft augers gnnding 5015 CL 0 0- 650 Z - U' - - � 41 20-40 2 3010 - N co' ml / W j 8, v 70 50/4 50/q 0 33 First water at 70 ft z `0 33, en 3 % kLog continued on next page MI Nin GEOLOGIST Matt Somogyi � GolderDRILLING CONTRACTOR Site Services CHECKED /1�SSOCi21Xl'3 DRILLER Josh Anderson DATE 10/8/2014 SHEET 4 of 5 0 PROJECT : Pawnee Waste Site Characterization RECORD OF BORING BH -2014-13 PROJECT NUMBER : 140-7882A COORDINATES: N : 1 , 551 , 188 E . 3, 374, 031 LOCATION : Weld County. Colorado GROUND SURFACE ELEVATION : 5077 ft - c U > t LITHOLOGY DESCRIPTION a nO ELEV. w a N p REMARKS ato e > a DEPTH �-- 9 a, m W o (ft) 2 U i' 50.0 - 74.0- 5005 (CL) SI_TY CLAY, medium plasticity, some fine to medium sand, moderate yellowish brown ( 10YR 5/4), cohesive, w<PL, moist. hard . no HCI reaction continued 72 ft: augers grinding from previous page CL 5002.6 74. 0 - 80.0 74.0 (ML) talcous CLAYEY SILT (SOAPSTONE), low ' • ; plasticity, pinkish gray (5YR 8/1 ). w<PL, moist, very stiff, I . - no HCI 75.r • • • • • • • • 6 ; • ; 21 -16- 32 2 _ 16-35 2 ^� • • • -5000 ' • ML •_ • • • • • • • • • • •_ • • • • • • • _ • • • • • • • • It • - I 4996.6 50.0 Boring completed at 80 ft 80.0 Boring completed at 80 ft of O o z CD ai O Q 85.0 v (N47:-.) W CO I - W W z d N a) a) O I U) 90.0 CO = • DRILLING CONTRACTOR: Site Services GEOLOGIST: Matt Somogyi a ' Golder DRILLER: Josh Anderson CHECKED: °Associates DATE: 10/8/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-14 PROJECT NUMBER 140-7882A COORDINATES N 1,550,497 B 3,374,043 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5075 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/08/14 11 15 TOTAL DEPTH 70 ft DATE COMPLETED 10/08/14 16 36 BOTTOM ELEVATION 5005 ft DRILLING FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None re L g =U ELEV W 3 0 o 1,5= c LITHOLOGY DESCRIPTION 9. DEPTH a °; N p REMARKS w (7 (ft) 2 mre w 00 UU-19U -5075 (ML)SILT,low plasticity,some fine to medium sand dark yellowish brown (10YR 4/2) w<PL moist, stiff, roots present in top 0 5 ft moderate HCI reaction 2-8 7-5 15 - 2 0 9 ft Same as at 0 ft but very pale orange(10YR 8/2), dry 5 0— Bulk sample collected from cuttings 5-15 ft —5070 5 ft Same as at 0 9 ft but firm 3-347 7 1: Lc) ML F- - 0 a a - z a c0 m 100- 2 -3065 0 d -- 4-7-7-9 14 W m WI W z _ z - i m� 150- Log continued on next page D mi -'- GEOLOGIST Matt Somogyi r DRILLING CONTRACTOR Site Services CHECKED GOideDRILLER Josh Anderson AI es DATE 10/8/2014 SHEET 1 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-14 PROJECT NUMBER 140-7882A COORDINATES N 1,550,497 E 3,374,043 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5075 ft LLu d v LITHOLOGY DESCRIPTION a oo ELEV w a o' N o REMARKS ❑ DEPTH m a ui O (ft) W re 15 U U U-19 U 15-'Mt tt Brass liner samples collected 3060 (ML)SILT,low plasticity,some fine to medium sand,dark yellowish brown (10YR 4/2), w<PL, moist, stiff, roots present in top 0 5 ft, moderate HCI reaction continued 6-7-7- 14 1 65 _ from previous page 12 2 16 5- 17 5 ft Same as at 0 9 ft but with some fine to ML coarse sand —19 0---20-6 i r , 509 02 - (ML)CLAYEY SILT, low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL moist hard, weak HCI reaction ML 200- -5055 r , < 5054 6 2U6-230 206 (SP)SAND,fine to medium poorly graded,subangular 17-27- 26-31 >50 2 - trace non-plastic fines, pale yellowish brown (10YR 6/2)non-cohesive dry very dense,very weak HCI SP 5052 2 -2 3 0--701I �:` 23 0 (ML)CLAYEY SILT low plasticity,some fine to medium sand pale yellowish brown (10YR 6/2), w<PL, moist � hard, weak HCI reaction �'' / • 250- ' -5050 ::/. 9-23- >50 1 38-43 2 /1://, o O a a CO - /,:, 0 a / ML I i+ v 29 - 31 2 ft Same as at 23 ft but moderate yellowish N brown(10YR 4/2) / i w 30 0- -5045 mI w - ,J,r.� 6-12- 30 2 z — `ter, . 18-28 2 a rf!! c, — J m _ es ZI — m — W • r Log continued on next page mi -'R GEOLOGIST Matt Somogyl Li,w '��. Golderssociates DRILLING CONTRACTOR Site Services CHECKED 3• AWA DRILLER Josh Anderson DATE 10/8/2014 SHEET 2 of 4 a PROJECT Pawnee Waste St�eChar Characterization RECORD OF BORING BH-2014-14 14 PROJECT NUMBER 140-7882A COORDINATES N 1,550,497 E 3,37 4,043 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5075 ft - §o EEV ≤E ` § LITHOLOGY DESCRIPTION §g DEPTH '- _ w § REMARKS A` $� m! m 23 0-70 0 (ML)CLAYEY SILT, low plasticity,some fine to medium sand, pale yellowish i / r�ro rev moist, 35 r 35-�_ was e�.samples�collected _ 8-21- 49 I 28-34 40 0- -5035 # - & ■ Same ek2 , but with aca6* e throughout @_ so ML , «0- -5030 26» ,7 0 - _m �; § - (0 \ 2 ( _ E - co. W 50 0— ! �z % $ 5 1 25 z [ Log continued on_page GEOLOGIST Matt' DRILLING CONTRACTOR Site Services CHECKED A.Associates DRILLER Josh+d DATE 10/8/2014 SHEET 3of4 ! PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-14 PROJECT NUMBER 140-7882A COORDINATES N 1,550,497 E 3,374,043 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5075 ft re 15-c , LITHOLOGY DESCRIPTION a o ELEV vi a o N o REMARKS o DEPTH COa CO (ft) 2 U) 23.0-700 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL, moist, hard, weak HCI reaction continued from previous page 55 0- "5020 15 26- >50 1 5 27 1 5 600- 3015 24-30- >50 15 49 1 5 ML First water at 62 5 ft m I- O O a 65 0- 3010 15-16- 1.5 26 42 1 5 0 - c - x U 0 NI - N W 7 CO W W Z a _ 5005 2 O ru u Bonna completed at 70 ft 70 0 Boring completed at 70 tt 2. W wl C DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Cl \: Golder DRILLER Josh Anderson CHECKED Associates DATE 10/8/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-15 PROJECT NUMBER 140-7882A COORDINATES N 1,550,545 9 E 3,374,694 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,081 5 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/15/14 09 06 TOTAL DEPTH 72 ft DATE COMPLETED 10/15/14 13 18 BOTTOM ELEVATION 5,009 5 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None z g O ELEV a < LITHOLOGY DESCRIPTION COMMENTS w > 9 DEPTH r o w C7 (ft) 2 hi hi ou 00-165 (ML)SILT,low plasticity,some fine to medium sand,pale yellowish brown (10YR 6/2), w<PL, moist, stiff, roots present in top 0 7 ft,moderate HCI reaction —5080 29 4 3 2- 16 ft Same as at 0 ft but very pale orange(10YR 8/2) 50- 5 75-16 ft Same as at 3 2 ft but very stiff 3075 3 8 5 ML N m - H O - a - z 0 a 100— cc 2 U- - v O 2 75 I 3070 5 u) m _ w 3 m — n 34 5 uJ 150— Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi • � AGolder DRILLER Josh Anderson CHECKED ssociate8 DATE 10/15/2014 SHEET 1 of 5 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-15 PROJECT NUMBER 140-7882A COORDINATES N 1,550,545 9 E 3,374,694 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,081 5 ft • O =O ELEV §W 0- <= LITHOLOGY DESCRIPTION °-O W°- cf COMMENTS w" > §J DEPTH r� • LUC7 (ft) 2 w re 150 00-16.5 - (ML)SILT,low plasticity,some fine to medium sand,pale yellowish brown (10YR 6/2) w<PL moist, stiff, roots ML present in top 0 7 ft,moderate HCI reaction 5065 0 -5065 165-176 165 (SP) SAND fine poorly graded, subangular some sP 3 a non-plastic fines, very pale oragne (10 YR 5 - 8/2)non-cohesive dry,very dense,moderate HCI 5063 9 176-220 176 (ML)SILT low plasticity,some fine to medium sand,very _ pale orange(10YR 8/2),w<PL,moist,very stiff,moderate HCI reaction ML 200- 3 22 -5060 5 5059 5 220-260 220 (SW) SAND fine to coarse well graded, subangular, some fie to coarse well graded gravel and non-plastic fines,very pale orange(10 YR8/2),non-cohesive moist . compact strong HCI reaction,CaCO3 throughout ° • ° - SW 25 0- °P 5055 5 26.0-375 260 -5055 (ML)CLAYEY SILT,low plasticity,some fine to medium 4 6 sand, pale yellowish brown (10YR 6/2), w<PL, moist, 5 - hard, weak HCI reaction . . a a c0 C7 ML c 30 0— • • VJ — W • • n - ml 5 Z -5050 . . 5 3 - Qy N Log continued on next page DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi W ^` Golder DRILLER Josh Anderson CHECKED 3 Associates DATE 10/15/2014 SHEET 2 of 5 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-15 PROJECT NUMBER 140-7882A COORDINATES N 1,550,545 9 E 3,374,694 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,081 5 ft Z U J " a ELEV 0- Q LITH0L0GY DESCRIPTION a COMMENTS w > 9 DEPTH r w c7 (ft) 2 8 260-375 ; (ML)CLAYEY SILT,low plasticity some fine to medium - sand pale yellowish brown (10YR 6/2) w<PL moist, hard, weak HCI reaction 5 35 ll— /X.. ML —5045 /Y' 5 5044 0 375-720 /�// 375 - (CL) SILTY CLAY, medium plasticity, some fine to medium sand, moderate yellowish brown (10YR 5/4), cohesive,w—PL,moist,hard, no HCI 39-42 ft Same as at 37 5 ft but moderately cemented 400— _ "3040 5 45 0— CL Dnller noted very hard dnllmg - 45 5 - 46 5 ft Same as at 37 5 ft but with CaCO3 throughout,weak HCI reaction 5 3035 5 a 46 5-48 ft Same as at 37 5 ft but very hard and blocky z o: U 48 3- 56 ft Same as at 39 ft but strongly cemented �i strong HCI reaction co 50 k j 5 o. 3030 v — w j k Log continued on ne#page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Z G jJ b DRILLER Josh Anderson CHECKED ASSOCIc1es DATE 10/15/2014 SHEET 3 of 5 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-15 PROJECT NUMBER 140-7882A COORDINATES N 1,550,545 9 E 3,374,694 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,081 5 ft _ ZO O G Z n. ¢ LITHOLOGY DESCRIPTION a p ELEV a Z COMMENTS w > qQ 9 DEPTH a w (7 (ft) re 375-720 (CL)medium SILTYsa CLAY, medium plasticity,sr some fiRne sand, moderate yellowish brown (10YR 5/4), cohesive w-PL moist,hard, no HCI 5 550- 5025 5- 5 60 Cr The 59-62 ft section on the core barrel is wet but there is 60-72 ft Same as at 37 5 ft but highly fissured no free water in the core at this depth 5 -5020 5 CL N _ F 65 0— a. 5 a 3015 5 I C j W j W _ Z 6 / a 70 0- 3 First water at 70 ft 70-7211 Same as at 37 5 ft but wet o k Log continued on next page col DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi GOider DRILLER Josh Anderson CHECKED PAssodcates DATE 10/15/2014 SHEET 4 of 5 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-15 PROJECT NUMBER 140-7882A COORDINATES N 1,550,545 9 E 3,374,694 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,081 5 ft I O U ELEV 0- Q LITHOLOGY DESCRIPTION a w a COMMENTS w" > 9, DEPTH r� LU o (ft) 2 w w re 3010 CL 5009 5 3 72 0 Boring completed at 72 ft, Bonna completed at 72 ft, 75 0- 800 H o - (7 a a z 0 0 85 0- r7 U - a NI N W - LU m W' W 2 - a - m 0 N k 90 0- Wi -. DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi W r F Golder DRILLER Josh Anderson CHECKED Associates DATE 10/15/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-16 PROJECT NUMBER 140-7882A COORDINATES N 1,549,874 9 E 3,374,038 3 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 1 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/09/14 08 57 TOTAL DEPTH 69 ft DATE COMPLETED 10/09/14 12 30 BOTTOM ELEVATION 5,005 1 ft DRILL FLUIDS Non HOLE DIAMETER 8 inches DRILL LUBRICANTS None z F S 0 U 2 ELEV 0-x Q. LITHOLOGY DESCRIPTION -O w a COMMENTS w" >" J DEPTH F-• w O (ft) re 00 00-21.0 (ML) SILT, low plasticity, some fine to medium sand, moderate yellowish brown (10YR 5/4), w<PL, dry, stiff, roots present in top 1 1ft,moderate HCI reaction 1 2-21 ft Same as at 0 ft but very pale orange(10YR 8/2) 31 4 -5070 50,` 31 5 ML in -5065 8 7-14 ft,Same as at 1 2 ft but with CaCO3 throughout, some fine to coarse sand z a 10 0,— U re x U• -_ 11-14 ft Same as at 1 2 ft but with some fine gravel 5 w _ w' z a —5060 33 5 150— Log continued on next page col DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w :• Golder DRILLER Josh Anderson CHECKED VAvASSOCicateS DATE 10/9/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-16 PROJECT NUMBER 140-7882A COORDINATES N 1,549,874 9 E 3,374,038 3 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 1 ft O U = s O ELEV a w Z w < LITHOLOGY DESCRIPTION 9 DEPTH w COMMENTS (ft) 15u - 00-210 (ML) SILT, low plasticity, some fine to medium sand moderate yellowish brown (10YR 5/4), w<PL, dry, stiff, roots present in top 1 1ft,moderate HCI reaction 33 5 17 2-21 ft Same as at 1 2 ft but very stiff ML `5055 20 0'- 50531 210-232 210 (SP)SAND fine to medium,poorly graded,subangular, 3 99 some fine gravel, trace non-plastic fines pale yellowish 5 brown (10YR 6/2) non-cohesive dry very dense, SP moderate HCI reaction 5050 9 232-690 232 (ML)CLAYEY SILT,low plasticity some fine to medium 7 b 23 5—24 5 ft Driller noted very hard layer sand, moderate yellowish brown (10YR 4/2), w<PL, .7`5050 moist,hard, no HCI reaction ,11 25 0-- f i 5 ❑ • 7- a a ML • -5045P./ ✓ $ - r 30 Cr- 09i W ml 5 w 5 w N r Log continued on next page Wi 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi • Golder DRILLER Josh Anderson CHECKED • 0Associates DATE 10/9/2014 SHEET 2 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-16 PROJECT NUMBER 140-7882A COORDINATES N 1,549,874 9 E 3,374,038 3 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 1 ft pI U 0-= ¢= LITHOLOGY DESCRIPTION a O ELEV Fl. a COMMENTS w > r 9 DEPTH rn w o (ft) hi re 232-690 7`5040 (ML)CLAYEY SILT,low plasticity some fine to medium / < sand, moderate yellowish brown (10YR 4/2) w<PL, moist hard, no HCI reaction 35 0,_ 34-37 4 ft Same as at 23 2 ft but moderately cemented moderate HCI reaction 4 __ 2 5 X 38-40 4 ft Same as at 23 3 ft but with some fine gravel —5035 •!/ yAr 40 0 y 5 : ML -5030 44-49 ft Same as at 23 2 ft but moderately cemented y weak HCI reaction 45 0J- X m o 5 O 5 a a a z O 'a O _cc I O a N• - Nl -5025 w t w 50 0-- w z • a 5 // ' eto _ W /`1 Log continued on next page co wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi ul DRILLER Josh Anderson CHECKED e• A SSOCi21#es DATE 10/9/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING BH-2014-16 PROJECT NUMBER 140-7882A COORDINATES N 1,549,874 9 E 3,374,038 3 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 1 ft z v • O O ELEV z w > LITHOLOGY DESCRIPTION o O DEPTH IL' COMMENTS ❑ W (ft) § ce 232-690 - (ML)CLAYEY SILT,low plasticity,some fine to medium sand, moderate yellowish brown (10YR 4/2), w<PL 3 moist,hard, no HCI reaction 5 3020 55 0-- 5 5 • t1) -5015 r� 59-60 ft Same as at 23 3 ft but moderately cemented and fissured 1111 60 0,- ML First water at 61 ft 61-62 2 ft Same as at 59 ft but wet,moist below 62 2 5 r -—5010 64-69 ft Same as at 59 ft but wet 65 0-- aa❑ cal 5 ce z — U NI tlJ — W co W 50051 W 69 0 z a Bantus completed at 69 ft,Bonna completed at 69 ft, a 70 N W wt DRILLING CONTRACTOR Site Seances GEOLOGIST Matt Somogyi (ipr DRILLER Josh Anderson CHECKED ASSOCl211te3 DATE 10/9/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,551,976 1 E 3,374,729 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,091 3 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/18/14 10 40 TOTAL DEPTH 85 ft DATE COMPLETED 10/18/14 16 10 BOTTOM ELEVATION 5,006 3 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None O C) w 0.= > LITHOLOGY DESCRIPTION a o DE rPTH COMMENTS (ft) 2 w � O 00-225 (ML) SILT, low plasticity, some fine sand, moderate yellowish brown (10YR 5/4), w<PL, moist, stiff, roots - present in top 1 ft,moderate HCI reaction "3090 1 2-22 5 ft Same as at 0 ft but very pale orange(10YR - 8/2) 17 4 5 -5085 11 g 5 ML 7 7-22 5 ft Same as at 1 2 ft but very stiff I- 0 - O _ a.a 9-15 5 ft Same as at 7 7 ft but with trace fine sand z � 100- EL (7 ce 2 O - v o -5080 3.5 5 N Fw - F 7 - CO w� w Z - 3 a m n oQ 41 5 k 15Q Log continued on next page — DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w ^ Golder DRILLER Josh Anderson CHECKED °Associates DATE 10/18/2014 SHEET 1 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,551,976 1 E 3,374,729 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,091 3 ft p 0- ¢ O ELEV a LITHOLOGY DESCRIPTION za COMMENTS o w > qQ 9 DEPTH o W (ft) 2 W 150 00-225 (ML) SILT, low plasticity, some fine sand moderate yellowish brown (10YR 5/4) w<PL, moist, stiff, roots present in top 1 ft moderate HCI reaction —5075 5 ML 19-22 5 ft Same as at 9 ft but moderately cemented 200- -5070 5 5068 8 225-285 225 (ML)CLAYEY SILT,low plasticity,some fine to medium • sand, pale yellowish brown (10YR 6/2) w<PL, moist, hard, moderate HCI reaction • r 24-26 ft Same as at 22 5 ft but moderately cemented 25 Cr "• ML 5065 5 o ((( U - ' ff 0- a 5062 8 6 (CL) SILTY 28 5 (CL) SILTY CLAY, medium plasticity, trace fine sand, 0 pale yellowish brown(10YR 6/2),cohesive,w<PL,moist = hard, weak HCI reaction U a 30 0- 29 - 31 ft Same as at 28 5 ft but with some fine to Ni - medium sand and moderately cemented - CL 5 w' 3060 5 - - j W % Log continued on next page Wi 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi LA' '-: Golder DRILLER Josh Anderson CHECKED 3 ° t13SOC12lteS DATE 10/18/2014 SHEET 2 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,551,976 1 E 3,374,729 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,091 3 ft z o a ¢ LITHOLOGY DESCRIPTION 4q O ELEV w a COMMENTS w >'" ¢J DEPTH w o (ft) 2 hi - 285-426 (CL) SILTY CLAY, medium plasticity, trace fine sand pale yellowish brown(10YR 6/2),cohesive,w<PL,moist, hard weak HCI reaction 35 0- - 34-36 ft Same as at 28 5 ft but moderatley cemented, no HCI reaction 3055 5 5 - 37-39 ft bgs Driller noted very hard dnllmg CL -- 40 0- / 3050 5 5048 7 426-52 6 SAN �� 426 - (CL) SANDY CLAY, fine to coarse, low plasticity, -- moderate yellowish brown(10YR 5/4),w<PL,moist hard no HCI reaction 45 0— I - O 3045 5 5 a z - CL Cal 0 co. - C d 50 0- Z / 5 a 5 '3040 O Ci / Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z Golder DRILLER Josh Anderson CHECKED Assodates DATE 10/18/2014 SHEET 3 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,551,976 1 E 3,374,729 6 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,091 3 ft = 0 U -J Z w <� LITHOLOGY DESCRIPTION o a DEPTH w COMMENTS o w (ft) 2 8 5Tu87 52 6-83 2 - (CL)CL 52 6 (CL)CLAY,medium plasticity some silt,trace fine sand - pale yellowish brown (10YR 6/2) w<PL moist, hard, 5 moderate HCI reaction 55 0- --5035 5 5 - 56 6 - 57 6 ft Same as at 52 6 ft but with CaCO3 - throughout,strong HCI reaction 60 Cr_ —5030 .5_ 5 CL 64-66 ft Same as at 52 6 ft but fissured,no HCI reaction m j ~O 65 0- 0 - 3025 5 5 C NI - Lj t- - CO. - W Z _ 69-74 ft Same as at 52 6 ft with CaCO3 throughout, a weak HCI reaction 700 5 5 O cn Log continued on neM page Wi -= DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi W t�:� Golder DRILLER Josh Anderson CHECKED Associates DATE 10/18/2014 SHEET 4 of 5 a. PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-01 PROJECT NUMBER 140-7882A COORDINATES N 1,551,9761 E 3,374,7296 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,091 3 ft p U ¢ LITH0L0GY DESCRIPTION 0 ELEV w a Z COMMENTS w > S DEPTH r w (ft) cc —5020 (52 6CL) 2 % ( CLAY,medium plasticity /2) silt,trace fine sand, - pale yellowish brown (10YR 6/2) w<PL moist, hard, moderate HCI reaction j 5 First water at74ft 74-832ft Same as at 526ftbutwet % 750- 75-79 ft Same as at 52 69 ft but fissured,wet -—5015 CL 5 - j 80 0- "3010 5 n 50081 m 83 2-83 6 83 7 SP - (SP) SAND, fine, poorly graded, subangular, trace I i///// 83 6 o non-plastic fines pale yellowish brown (10YR 6/2), o - non-cohesive,wet,very dense moderate HCI CL a a 836-850 o (CL)CLAY,medium plasticity,some silt,trace fine sand, 5006 3 a 85 0 1 pale yellowish brown (10YR 6/2), w<PL, wet, hard, I 85 0 I moderate HCI reaction eonng completed at 85 ft, K a x o - Bonng completed at 85 ft, NI ~W _ WI W z - a 33 m W 90 0- Wi 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi �^‘ Golder DRILLER Josh Anderson CHECKED • 4.Associates DATE 10/18/2014 SHEET 5 of 5 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,549,567 6 E 3,374,062 9 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 4 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/19/14 12 30 TOTAL DEPTH 69 ft DATE COMPLETED 10/19/14 15 40 BOTTOM ELEVATION 5,005 4 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None p o < LITHOLOGY DESCRIPTION o o DEPTH ° COMMENTS o 1.11 (ft) 2 et O 1 00-213 - (ML) SILT, low plasticity, some fine sand, moderate yellowish brown (10YR 5/4), w<PL, moist, stiff, roots - present in top 1 ft,moderate HCI reaction - 1 1-21 3 ft Same as at 0 ft but very pale orange(10YR 8/2) 2 8 4 -5070 50- - 33 5 ML - 7 6-21 3ft Same as at 1 1 ft but very stiff - I- o - t7 a -5065 CD 100— a (7 — re • - a a — 28 NI 5 w _ m — � w Z 3 a - 13-213ft Same as at 76ftbutwithtracefinesand m 3060 5 15 Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi a � AGolder DRILLER Josh Anderson CHECKED ssociates DATE 10/19/2014 SHEET 1 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,549,567 6 E 3,374,062 9 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 4 ft p O 17.w LITHOLOGY DESCRIPTION a DEPTH a COMMENTS w ro (ft) 2 w rt 150 00-213 (ML) SILT, low plasticity, some fine sand, moderate yellowish brown (10YR 5/4), w<PL, moist, stiff, roots present in top 1 ft moderate HCI reaction 5 ML 3055 200- 5053 1 213-232 213 A_ (SP) SAND, fine, poorly graded subangular some 5 non-plastic fines, very pale orange (10YR 8/2), non-cohesive,wet,very dense,weak HCI SP 5051 2 232-331 r 232 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL moist hard, moderate HCI reaction —5050 • 25 0- l 5 H n. ML z - (0 - • Cal -5045 29-33 1 ft Same as at 23 2 ft but moderately cemented U E,0 30 0- N N F 7 - CD. 5 w 5 w 3 - a • - (Jl 5041 3 N % 331 CL Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi Golder DRILLER Josh Anderson CHECKED °Assoces DATE 10/19/2014 SHEET 2 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,549,567 6 E 3,374,062 9 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 4 ft I z v p I p ELEV a Q LITH0L0GY DESCRIPTION ap w w COMMENTS w > DEPTH r o w c7 (ft) 2 8 re 33 35-34 ft Same as at 33 1 ft but strongly cemented, —5040 strong HCI reaction 33 1-35 6 CL 35 (CL)CLAY, medium plasticity some fine sand and silt, pale yellowish brown(10YR 6/2),w<PL, moist,hard,no HCI reaction / 5038 8 1I 35 6 34-35 6 ft Same as at 33 1 ft but moderately cemented,I/ / - moderate HCI reaction CL 5 356-371 5 - (CL) SANDY CLAY, fine to medium, low plasticity 5037 3 1 moderate yellowish brown(10YR 5/4),w<PL,moist,hard % 37 1 - no HCI reaction I 371-393 (CL) CLAY, h medium (10YR ty, some finsiv sand and t, cL - pale yellowish brown(10YR 6/2),cohesive,w<PL,moist hard,no HCI reaction 50351 3035 39 3-42 2 39 3 (CL) SANDY CLAY, fine to medium, low plasticity, 40 0— moderate yellowish brown(10YR 5/4),w<PL,moist,hard no HCI reaction CL 5 5032 2 - 422-690 422 (CL) CLAY, medium plasticity, some fine sand and silt, - pale yellowish brown(10YR 6/2),cohesive,w<PL,moist, hard,no HCI reaction 44-49 ft bgs Driller noted very hard drilling —5030 44 - 48 1 ft Same as at 42 2 ft but with CaCO3 throughout,strongly cemented,strong HCI reaction 45 0- m _ j (O7 5 z - (7 CL C7 - v -5025 49-54 ft Same as at 42 2 ft but moderately cemented W I 50!T2 5 m jc w Log continued on net page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z DRILLER Josh Anderson CHECKED *Golder ssociates DATE 10/19/2014 SHEET 3 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-02 PROJECT NUMBER 140-7882A COORDINATES N 1,549,567 6 E 3,374,062 9 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,074 4 ft p U -J x a x ¢ LITHOLOGY DESCRIPTION °_p ELEV w a COMMENTS w" >" cJ DEPTH � w c0 (ft) 2 8 422-690 %�� - (CL)CLAY medium plasticity some fine sand and silt, pale yellowish brown(10YR 6/2),cohesive,w<PL moist, _- - hard,no HCI reaction 5 3020 550— _ 5 First water at 59 ft 3015 59 ft Same as at 42 2 ft but wet 60 0- 59 5-62 5 ft Same as at 42 2 ft but fissured,free water at fissure planes _ CL - 5 - j - j 3010 64-69 ft Same as at 42 2 ft but fissured and wet m OH 65D 0. z - O 'a 5 5 re U sr N1 — L, - / 5005 4 ml / W W 69 0 Z a flonng completed at 69 ft, Bonita completed at 69 ft, a 700- m 0 v N W K 7 COI DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z DRILLER Josh Anderson CHECKED ASSOCi21teS DATE 10/19/2014 SHEET 4 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,549,869 7 E 3,372,715 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,065 0 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -900 DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/17/14 08 28 TOTAL DEPTH 50 ft DATE COMPLETED 10/17/14 11 35 BOTTOM ELEVATION 5,015 0 ft DRILL FLUIDS None HOLE DIAMETER 8 Inches DRILL LUBRICANTS None x p U � a x ¢ ELEV LITHOLOGY DESCRIPTION a p w a COMMENTS w" >" Qq Si DEPTH r-� o W O (ft) M 0U -5065 00-78 (ML)SILT,low plasticity,some fine to medium sand,pale yellowish brown (10YR 5/4), w<PL, moist, stiff, roots present in top 0 7 ft,moderate HCI reaction 07-78 ft Same as at 0 ft but very pale orange(10YR 8/2) 2 6 4 ML 5 0--5060 5 5057 2 78-126 78 (SP) SAND, fine, poorly graded, subangular, some non-plastic fines, very pale orange (10YR 8/2), non-cohesive,dry,very dense weak HCI reaction t7 a a z t7 'a 10 x-5055 SP IY 2 U 34 Ni 5 w FW F ~ ml 5052 4 126-165 126 3 (SM)SILTY SAND,fine, poorly graded subangular very a pale orange (10YR 8/2), non-cohesive, dry, very dense, weak HCI reaction SM n 6 66 5 N 15a— Log continued on next page WI -' : DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyl A.Golder DRILLER Josh Anderson CHECKED Associates DATE 10/17/2014 SHEET 1 of 3 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,549,869 7 E 3,372,715 2 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,065 0 ft z p p a d ¢F LITHOLOGY DESCRIPTION a 9 ELEV vi a COMMENTS w > c 9 DEPTH < w CD (ft) n 8 15u 3050 126-165 (SM)SILTY SAND,fine,poorly graded,subangular,very pale orange (10YR 8/2), non-cohesive, dry, very dense sM weak HCI reaction 5048 5 165-176 165 (SW) SAND, fine to coarse, well graded, subangular, sW a6 some fine gravel and non-plastic fines, pale yellowish 5 brown (10YR 6/2),non-cohesive dry, very dense, weak .•• • 50474 1 HCI reaction / 17 6 - 176-416 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL, moist, - hard moderate HCI reaction 20 0—`5045 5 24-25 8 ft Same as at 17 6 ft but moderately cemented 250-`3040 ML 5 m Z8 ~ I- a CD a a 2 CD 'a 1 (7 re = c.) a b 30 0-`5035 Ni y Fw F 7 mI 5 w 31 -33.7 ft Same as at 17 6 ft but strongly cemented, 5 3 1 strong HCI reaction a m 0 0 v m Log continued on next page Wi DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi z Golder DRILLER Josh Anderson CHECKED Associates DATE 10/17/2014 SHEET 2 of 3 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-03 PROJECT NUMBER 140-7882A COORDINATES N 1,549,869 7 E 3,372,715 2 - LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,065 0 ft I O U m a v LITHOLOGY DESCRIPTION a p ELEV vi a re COMMENTS w > g DEPTH ° W o (ft) 2 8 re - 176-416 — (ML)CLAYEY SILT,low plasticity some fine to medium 2 sand, pale yellowish brown (10YR 6/2), w<PL, moist, hard moderate HCI reaction 35O'5030 35-37 ft Same as at 17 6 ft but moderately cemented f - 5 ~ 5 / ML 40 O5025 - //V 5023 4 .5. 416-S66 41s 5 — (CL) SILTY CLAY, medium plasticity, some fine to medium sand, moderate yellowish brown (10YR 5/4), cohesive,w<PL,moist,hard, no HCI reaction 1 z CL 44-46 6 ft Same as at 41 6 ft but moderately cemented 45 O5020 m p 50184 45 C 46 6-47 9 • 46 6 5 First water at 46 6 ft a ° • a — (SW) SAND, fine to coarse, well graded, subangular, ° 2 some non-plastic fines,moderate yellowish brown(10YR ; sW a 5/4),non-cohesive,wet,very dense,no HCI reaction a 5017 1 479-500 479 _ (CL) SILTY CLAY medium plasticity, some fine to j C medium sand, moderate yellowish brown (10YR 5/4) N cohesive w<PL moist hard no HCI reaction CL i G 49-50 ft Same as at 47 9 ft but thinly fissured 1 co co / 50150 vii bU U 50 0 3 Bantu!completed at 50 ft, Bonng completed at 50 ft, a - c, m '1- 0 v - th Fw Wi -'_ DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w s• Golder DRILLER Josh Anderson CHECKED a °Associ tes DATE 10/17/2014 SHEET 3 of 3 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,550,684 4 E 3,372,034 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 8 ft DRILL RIG CME55 PROJECTION Colorado State Plane,Zone 0501 North INCLINATION -90° DATUM NAVD 88 DRILLING METHOD Hollow Stem Auger HORIZONTAL UNITS ft DATE STARTED 10/16/14 09 15 TOTAL DEPTH 59 ft DATE COMPLETED 10/16/14 13 43 BOTTOM ELEVATION 5,007 8 ft DRILL FLUIDS None HOLE DIAMETER 8 inches DRILL LUBRICANTS None x U a ¢ ELEV LITHOLOGY DESCRIPTION 0 p COMMENTS w >" _I DEPTH w (ft) hi hi 0 00-100 (ML) SILT, low plasticity, some fine to medium sand, moderate yellowish brown(10YR 5/4),w<PL,moist,stiff, - roots present in top 1 ft,moderate HCI reaction 3065 3 5 4 2 5- 10 ft Same as at 0 ft but very pale orange(10YR 8/2) 50- ML 32 5 - 5060 - 77-10ft Same as at 25ftbutverystiff m • - Bulk sample collected from cuttings 9-20 ft a- a. z !7 - 5056 8 10D 100-132 100 o_ (SP) SAND, fine, poorly graded, subangular, some non-plastic fines very pale orange (10 YR 8/2), a▪ - non-cohesive,dry,very dense,moderate HCI reaction 32 Ni SP 5 w _-5055 Z 5053 6 a 132-148 1•32 (ML)SILT,low plasticity,some fine to medium sand very - pale orange(10YR 8/2) w<PL,moist,very stiff,moderate ML HCI reaction 5 5052 1 5 w — • f. 14 8 ML r 15 0— Loq continued on next page Wi 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi � : Golder DRILLER Josh Anderson CHECKED • ffAssociates DATE 10/16/2014 SHEET 1 of 4 PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,550,684 4 E 3,372,034 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 8 ft z p c.) P LITHOLOGY DESCRIPTION a O ELEV W o COMMENTS w > 9 DEPTH w (ft) 2 cc 150 148-529 (ML)CLAYEY SILT,low plasticity,some fine to medium sand, pale yellowish brown (10YR 6/2), w<PL, moist hard, strong HCI reaction CaCO3 throughout the top 1 25 ft _ 5050 l i 7?, 5 19-23 ft Same as at 14 75 ft but moderately cemented, f",/ weak HCI reaction 200- • ,/'j 5 _3045 _ 24 - 26 5 ft Same as at 14 75 ft but moderately ,f ML cemented,weak HCI reaction f/, 250 - Y/ 5 5040 C�7 _ _ , r - /30 0 NI r • N co W 5 Wi 31 - 34 5 ft Same as at 14 75 ft but with CaCO3 5 3 5035 throughout moderate HCI reaction a ;:// o ✓ N 7 . Log continued on next page w ' DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi AwAGolder DRILLER Josh Anderson CHECKED Ssociate3 DATE 10/16/2014 SHEET 2 of 4 0 PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,550,684 4 E 3,372,034 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 8 ft OI O -' n~. ¢c LITHOLOGY DESCRIPTION a ELEV W a COMMENTS w > li 9 DEPTH c- o W O (ft) 2 - - 148-529 r (ML)CLAYEY SILT,low plasticity some fine to medium ,/ sand pale yellowish brown (10YR 6/2), w<PL moist hard, strong HCI reaction, CaCO3 throughout the top 350- 125ft - .....?/ + 5 5030 X X 40 0 , J'i 4/1 _5_ 5 5025 Y: ML ' 1 Y 45 0- A m m - c + + 5 c ///''' 5 a _-5020 ';( z /� o. i7..v O - U 7 Ni / First water at 49 ft W 49-498ft Same as at 1475ftbutwet-W I 50 0- Zw / 5 a. _ 5 o -5015 ch k Log continued on next page Wi 'R DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi � Golder DRILLER Josh Anderson CHECKED 0Associ Associates DATE 10/16/2014 SHEET 3 of 4 a PROJECT Pawnee Waste Site Characterization RECORD OF BORING MW-2014-04 PROJECT NUMBER 140-7882A COORDINATES N 1,550,684 4 E 3,372,034 5 LOCATION Weld County,Colorado GROUND SURFACE ELEVATION 5,066 8 ft p U z aa- ELEV S ¢c LITHOLOGY DESCRIPTION a O w a - COMMENTS w >" J DEPTH w O (ft) w 5013 9 ML 81 013 52 9 (CL) S - (CL) SILTY CLAY, medium plasticity, some fine to j 5 medium sand, moderate yellowish brown (10YR 5/4), cohesive,w—PL,moist,hard, no HCI 54-55 ft Same as at 52 9 ft but wet 55 0-" - � CL 5 5 -5010 5008 7 58 1-59 0 58 1 (ML)SILT,low plasticity,some fine to medium sand and ML clay,yellowish gray(5Y 7/2),w<PL non-cohesive,moist, 50078 1 very stiff,no HCI reaction / 59 0 Bonny completed at 59 ft Bonna completed at 59 ft 60 0- 65 a a a z _ a as < x U NI FW CO. i 112 - L11 Z a 70 0- (A FW J COI lily DRILLING CONTRACTOR Site Services GEOLOGIST Matt Somogyi w `'' Golder DRILLER Josh Anderson CHECKED "ASSOCj21>CC'3 DATE 10/16/2014 SHEET 4 of 4 a ATTACHMENT A-2-2 PIEZOMETER AND MONITORING WELL CONSTRUCTION DIAGRAMS Depth(ft) Elevation(ft) PIEZOMETER CONSTRUCTION SUMMARY L Site Location Pawnee Waste Piezometer No PZ-2 +2 68 5079 8 Project Number 140-7882A Boring No X-Ref BH-2014-07 5077 1 Survey Coordinates E 3373357 59 Elevation Ground Level 5077 1 ft CO State Plane N 1551824 22 Top of Casing 5079 8 ft Drilling Summary Construction Time Log Total Depth 73 63 ft Start Finish r. Borehole Diameter 8 in Task Date Time Date Time Casing Stickup Height 2 68 ft Install PVC 10/13 1038 10/13 1045 Driller Site Services-Josh Anderson Pour Sand 10/13 1049 10/13 1321 Bentonite Seal 10/13 1330 10/13 1506 Surface Comp 10/14 1310 10/14 1320 Rig CME 55 Bits(s) 8 inch 4-tooth carbide cutterhead Drilling Fluid none Protective Casing 4 inch locking square steel =4.• Well Design and Specifications F{i3- Casing String(s) C=Casing, S=Screen : String(s)Depth Elevation p g(s) Well Development 3 00 " " 5074 1 +2 68 - 63 5 C-1 5079 8 - 5013 6 63 5 - 73 3 S 5013 6 - 5003 8 Depth to water initial N/A final N/A 58 5 - 73 6 C-2 5018 6 - 5003 5 See separate well development sheet 61 20 ' 5015 9 Casing ClStabilization Test Data Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 63 49- 5013 6 C2 N/A See separate well development sheet Screen Si Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Q= N/A gpm Recovery Data Filter Pack 61 2-74 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 73 25- 5003 8 Bentonite Seal 3-61 2 ft bgs 73 63— 5003 5 CETCO PUREGOLD medium(3/8 inch) a bentonite chips rr 74 00 5003 5 Surface Seal 0-3 ft bgs Concrete mix 0 - -- - - NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/13/2014 Golder Associates Depth(ft) Elevation(ft) PIEZOMETER CONSTRUCTION SUMMARY Site Location Pawnee Waste Piezometer No PZ-3 +2 80 5073 1 Project Number 140-7882A Boring No X-Ref BH-2014-12 5070 3 Survey Coordinates E 3372729 96 Elevation Ground Level 5070 3 ft CO State Plane N 1551158 36 Top of Casing 5073 1 ft f. Drilling Summary Construction Time Log Total Depth 58 51 ft Start Finish Borehole Diameter 8 in Task Date Time Date Time •�: ��,_ Casing Stickup Height 2 80 ft Install PVC 10/14 851 10/14 854 Driller Site Services-Josh Anderson Pour Sand 10/14 904 10/14 1508 .tir. Bentonite Seal 10/14 1509 10/14 1512 ==-�• Hydrate Seal 10/14 1512 10/14 1525 Rig CME 55 Bentonite Seal 10/14 1525 10/14 1613 Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/19 1110 10/19 1130 Drilling Fluid none t : Protective Casing 4 inch locking square steel = Well Design and Specifications F Casing String(s) C=Casing, S=Screen _= Depth String(s) Elevation -„ p 2 70 >Via: . 5067 6 +2 8 - 48 5 C-1 5073 1 - 5021 8 Well Development 48 5 - 58 3 S 5021 8 - 5012 0 Depth to water initial N/A final N/A 58 6 - 58 6 C-2 5011 7 - 5011 7 See separate well development sheet 45 05 "-" '"'';-5025 3 Casing ClStabilization Test Data flush- threaded th PVC Sch 40 Time I pH I Spec Cond I Temp(C) 48 52- -5021 8 C2 N/A See separate well development sheet Screen S1 Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data Q= N/A gpm Filter Pack 45 05-58 57 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 58 28- -5012 0 Bentonite Seal 2 7-45 05 ft bgs 58 57- -5011 7 CETCO PUREGOLD medium(3/8 inch) u bentonite chips 5857 50118 6-1 Surface Seal 0-27ftbgs Concrete mix o NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by" Matt Somogyi Date 10/14/2014 Golder Associates Depth(ft) Elevation(ft) PIEZOMETER CONSTRUCTION SUMMARY Site Location Pawnee Waste Piezometer No PZ-04 +2 84 5084 3 Project Number 140-7882A Boring No X-Ref BH-2014-15 5081 5 Survey Coordinates E 3374694 17 Elevation Ground Level 5081 5 ft CO State Plane N 1550545 88 Top of Casing 5084 3 ft Drilling Summary Construction Time Log Total Depth 72 08 ft Start Finish Borehole Diameter 8 in Task Date Time Date Time Casing Stickup Height Hei ht 2 84 ft Install PVC 10/15 1343 10/15 1346 Driller Site Services-Josh Anderson Pour Sand 10/15 1348 10/15 1429 r:; Bentonite Seal 10/15 1432 10/15 1435 .ty.. Hydrate Seal 10/15 1435 10/15 1440 Rig CME 55 Bentonite Seal 10/15 1440 10/15 1605 • ;T= Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/19 1041 10/19 1056 k << Drilling Fluid none Protective Casing 4 inch locking square steel• Well Design and Specifications Ae= e=. Casing Strng(s) C=Casing, S=Screen Depth String(s) Elevation Well Development 2 80 ``• 5078 7 +2 84 - 61 9 C-1 5084 3 - 5019 6 61 9 - 71 7 S 5019 6 - 5009 8 Depth to water initial N/A final N/A 71 7 - 72 1 C-2 5009 8 - 5009 4 See separate well development sheet 58 80- 5022 7 Stabilization Test Data Casing C1 Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 61 94- 5019 6 C2 N/A See separate well development sheet Screen S1 Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data Q= N/A gpm Filter Pack 58 8-72 08 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 71 70- 5009 8 Bentonite Seal 2 8-58 8 ft bgs 72 08- 5009 4 CETCO PUREGOLD medium(3/8 inch) bentonite chips re 72 08 5009 4 Surface Seal 0-2 8 ft bgs Concrete mix 0 NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/15/2014 Golder Associates Depth(ft) Elevation(ft) MONITORING WELL CONSTRUCTION SUMMARY I Site Location Pawnee Waste Well No MW-1 +2 73 5094 0 Project Number 140-7882A Boring No X-Ref MW-2014-01 ' 5091 3 Survey Coordinates E 3374729 63 Elevation Ground Level 5091 3 ft CO State Plane N 1551976 06 Top of Casing_ 5094 0 ft r:: Drilling Summary Construction Time Log t4 ::%A s; z :.._s Total Depth 85 21 ft Start Finish n Borehole Diameter 8 in Task Date Time Date Time Y :..---=, s; Casing Stickup Height 2 73 ft Install PVC 10/18 1627 10/18 1629 &:`,•4.-.JDriller Site Services-Josh Anderson Pour Sand 10/18 1635 10/18 1710 uF' : =:F _= Bentonite Seal 10/18 1713 10/18 1820 : Hydrate Seal 10/18 1820 10/19 816 tRig CME 55 Bentonite Seal 10/19 816 10/19 849 ry :i Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/19 1009 10/19 1025 Eli Drilling Fluid none =' ` Protective Casing 4 inch locking square steel tt` R.t.z4Well Design and Specifications WS Well P x . o Casing String(s) C=Casing, S=Screen :,- ige Depth String(s) Elevation = _t.1Well Development ` 3 20 . 5088 1 +2 73 - 75 2 C-1 5094 0 - 5016 1 Mg P ; 6, 75 2 - 84 6 S 5016 1 - 5006 7 Depth to water initial N/A final N/A F t. 0 0 - 85 2 C-2 5091 3 - 5006 1 See separate well development sheet , 0^ - 72 08 5019 2 Casing - ClStabilization Test Data Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 75 16— 5016 1 C2 N/A See separate well development sheet Screen Si Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Q= N/A gpm Recovery Data Filter Pack 72 08-85 21 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 84 59- 5006 7 Bentonite Seal 3 2-72 08 ft bgs d 85 21- 5006 1 CETCO PUREGOLD medium(3/8 inch) oo o bentonite chips it 85 21 5006 1 Surface Seal 0-32 ft bgs Concrete mix 0 NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(mm sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/18/2014 Golder Associates Depth(ft) Elevation(ft) MONITORING WELL CONSTRUCTION SUMMARY r Site Location Pawnee Waste Well No MW-2 +2 74 5077 2 Project Number 140-7882A Boring No X-Ref MW-2014-02 5074 4 Survey Coordinates E 3374062 85 Elevation Ground Level 5074 4 ft CO State Plane N 1549567 56 Top of Casing 5077 2 ft Drilling Summary Construction Time Log Total Depth 68 57 ft Start Finish Borehole Diameter 8 in Task Date Time Date Time Casing Stickup Height 2 74 ft Install PVC 10/20 1050 10/20 1053 Driller Site Services-Josh Anderson Pour Sand 10/20 1055 10/20 1200 Bentonite Seal 10/20 1204 10/20 1210 <:,. Hydrate Seal 10/20 1210 10/20 1308 ", Rig CME 55 Bentonite Seal 10/20 1303 10/20 1323 i�- Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/20 1345 10/20 1400 Drilling Fluid none Protective Casing 4 inch locking square steel Well Design and Specifications Casing String(s) C=Casing, S=Screen • Depth String(s) Elevation ss; Well Development 2 80 5071 6 +2 74 - 53 4 C-1 5077 2 - 5021 0 53 4 - 68 1 S 5021 0 - 5006 3 Depth to water initial N/A final N/A 0 0 - 68 6 C-2 5074 4 - 5005 8 See separate well development sheet 5103-" 4``` 50234 Casing ClStabilization Test Data Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 53 38— 5021 0 C2 N/A See separate well development sheet Screen S1 Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data O= N/A gpm Filter Pack 51 03-68 57 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 - 68 08- 5006 3 Bentonite Seal 2 8-51 03 ft bgs 68 57— 5005 8 CETCO PUREGOLD medium(3/8 inch) bentonite chips 68 57 5005 8 0 Surface Seal 0-2 8 ft bgs Concrete mix 0 NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/20/2014 Golder Associates Depth(ft) Elevation(ft) MONITORING WELL CONSTRUCTION SUMMARY I Site Location Pawnee Waste Well No MW-2A +2 76 5073 7 Project Number 140-7882A Boring No X-Ref BH-2014-06(PZ-1) 5070 9 Survey Coordinates E 3372060 75 Elevation Ground Level 5070 9 ft CO State Plane N 1551800 20 Top of Casing 5073 7 ft ' - ¢`� Drilling Summary Construction Time Log - 1. .�.t: Total Depth 58 83 ft Start Finish ^ ; Borehole Diameter 8 in Task Date Time Date Time u`=: .I Casing Stickup Height 2 76 ft Install PVC 10/10 905 10/10 911 Driller Site Services-Josh Anderson Pour Sand 10/10 925 10/10 1016 F:≤ 5'4• Bentonite Seal 10/10 1027 10/10 1037 „`` .:-.i 4 Hydrate Seal 10/10 1037 10/10 1100 ;' . Rig CME 55 Bentonite Seal 10/10 1100 10/10 1158 Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/14 1254 10/14 1357 rA t Drilling Fluid none it -i Protective Casing 4 inch locking square steel c=- = Well Design and Specifications ,w. ''T Casing String(s) C=Casing, S=Screen y, x Depth String(s) Elevation x:--.3 Well Development 3 00 "3 t' ',3 5067 9 +2 76 - 48 7 C-1 5073 7 - 5022 2 !L'3 c: 48 7 - 58 3 S 5022 2 - 5012 6 Depth to water initial N/A final N/A l: 58 3 - 58 8 C-2 5012 6 - 5012 1 See separate well development sheet 46 50 5024 4 Casing ClStabilization Test Data Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 48 69— 5022 2 C2 N/A See separate well development sheet Screen S1 Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data Q= N/A gpm Filter Pack 46 5-58 83 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 58 29- 5012 6 Bentonite Seal 3-46 5 ft bgs d 58 83- 5012 1 CETCO PUREGOLD medium(3/8 inch) o bentonite chips re 58 83 5012 1 Surface Seal 0-3 ft bgs Concrete mix o NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/10/2014 Golder Associates Depth(ft) Elevation(ft) MONITORING WELL CONSTRUCTION SUMMARY Site Location Pawnee Waste Well No MW-3 +2 69 5067 7 Project Number 140-7882A Boring No X-Ref MW-2014-03 5065 0 Survey Coordinates E 3372715 18 Elevation Ground Level 5065 0 ft CO State Plane N 1549869 74 Top of Casing 5067 7 ft Drilling Summary Construction Time Log Total Depth 50 45 ft Start Finish x4 Borehole Diameter 8 in Task Date Time Date Time x-x Casing Stickup Height 2 69 ft Install PVC 10/17 1143 10/17 1147 Driller Site Services-Josh Anderson Pour Sand 10/17 1147 10/17 1215 Bentonite Seal 10/17 1215 10/17 1218 Hydrate Seal 10/17 1306 10/17 1320 s=: Rig CME 55 Bentonite Seal 10/17 1320 10/17 1330 Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/19 941 10/19 953 Drilling Fluid none Protective Casing 4 inch locking square steel Well Design and Specifications Casing String(s) C=Casing, S=Screen Depth Strings) Elevation +2 69 - 45 3 C-1 5067 7 - 5019 7 Well Development 2 90 5062 1 45 3 - 50 0 S 5019 7 - 5015 1 Depth to water initial N/A final N/A 0 0 - 50 5 C-2 5065 0 - 5014 6 See separate well development sheet • 42 17 ' ` 5022 9 - - Stabilization Test Data Casing C1 Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 45 29- 5019 7 C2 N/A See separate well development sheet Screen S1 Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data Q= N/A gpm Filter Pack 42 17-50 45 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 49 95- 5015 1 Bentonite Seal 2 9-42 17 ft bgs 50 45- 5014 6 CETCO PUREGOLD medium(3/8 inch) 0 bentonite chips re 50 45- 5014 6 Surface Seal 0-2 9 ft bgs Concrete mix 0 NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/17/2014 Golder Associates Depth(ft) Elevation(ft) MONITORING WELL CONSTRUCTION SUMMARY Site Location Pawnee Waste Well No MW-4 +2 72 5069 5 Project Number 140-7882A Boring No X-Ref MW-2014-04 5066 8 Survey Coordinates E 3372034 48 Elevation Ground Level 5066 8 ft CO State Plane N 1550684 35 Top of Casing 5069 5 ft Drilling Summary Construction Time Log Total Depth 59 00 ft Start Finish• Borehole Diameter 8 in Task Date Time Date Time n• Casing Stickup Height 2 72 ft Install PVC 10/16 1355 10/16 1358 Driller Site Services-Josh Anderson Pour Sand 10/16 1359 10/16 1505 s:- Bentonite Seal 10/16 1506 10/16 1507 f:?.7 Hydrate Seal 10/16 1508 10/16 1520 Rig CME 55 Bentonite Seal 10/16 1520 10/16 1619 Bits(s) 8 inch 4-tooth carbide cutterhead Surface Comp 10/19 910 10/19 930 f•: Drilling Fluid none Protective Casing 4 inch locking square steel ,<G x"- Well Design and Specifications Casing String(s) C=Casing, S=Screen Depth String(s) Elevation 3 20 y* 5063 6 +2 72 - 47 3 C-1 5069 5 - 5019 6 Well Development 47 3 - 57 0 S 5019 6 - 5009 8 Depth to water initial N/A final N/A 0 0 - 57 4 C-2 5066 8 - 5009 4 See separate well development sheet 44 92 5021 9 Casing ClStabilization Test Data Onoflex 2-inch Sch 40 flush- threaded PVC Time I pH I Spec Cond I Temp(C) 47 26- 5019 6 C2 N/A See separate well development sheet Screen Si Onoflex 2-inch Sch 40 0 010 Slot flush-threaded PVC S2 N/A Recovery Data Q= N/A gpm Filter Pack 44 92-58 75 ft bgs S= N/A ft CO Washed Silica 10-20 sand 20 57 03- 5009 8 Bentonite Seal 3 2-44 92 ft bgs a 57 42- 5009 4 CETCO PUREGOLD medium(3/8 inch) bentonite chips re 58 75 5007 8 0 Surface Seal 0-32 ft bgs Concrete mix 0 NOT TO SCALE 00 00 10 00 20 00 30 00 40 00 Time(min sec) Comments The bentonite seal was hydrated with a minimum of 3 gals potable water per 2 bags of bentonite chips Supervised by Matt Somogyi Date 10/16/2014 Golder Associates ATTACHMENT A-2-3 MONITORING WELL DEVELOPMENT FORMS jlLo1(ler Associates WELL DEVELOPMENT/PURGING FORM Project Ref Pawnee Waste Project No 1407882A Location MW-1 Monitored By M Somogyi Date I 10/22/2014 Time 1419 Well / Piezometer Data Depth of Well(from top of PVC) 87 95 feet Depth of Water(from top of PVC) 72 97 feet Radius of Casing 1 inches 0 083 feet Casing Volume 1 7 cubic feet 13 1 gallons Development/ Purging Discharge Data Purging Method Waterra HydroLift - Inertial Lift Pump Start Purging Date 10/22/2014 Time 1650 Stop Purging Date 10/23/2014 Time 1736 Monitoring Cumulative Date Time Volume Temp pH Spec Cond Turbidity Salinity Comments Discharged aarged (CC) (S U) (µS/cm) (Relative) (ppt) 10/22/14 1442 Start surge MW-1 Screened interval surged in 5 in lengths Surged 24 cycles 10/22/14 1647 End surge MW-1 Set foot valve near bottom of screen DTW 72 64 ft btoc 10/22/14 1650 Start purge MW-1 10/22/14 1727 1 5 17 1 7 73 441 1 v high 0 2 10/22/14 1734 2 25 14 4 8 18 331 9 v high 0 2 DTW 74 30 ft btoc 10/22/14 1744 5 13 2 8 26 333 4 v high 0 2 DTW 73 80 ft btoc 10/22/14 1757 7 5 11 8 8 07 445 6 v high 0 2 DTW 73 3 ft btoc BOW 87 9 ft bloc Pause development for 10/22/2014 10/23/14 940 Resume development 10/23/14 948 10 13 1 8 15 401 8 v high 0 2 10/23/14 1000 15 13 6 8 17 370 5 high 0 2 10/23/14 1028 30 13 7 8 14 355 6 med-hi 0 2 DTW 76 8 ft btoc 10/23/14 1054 47 5 Purged dry No WQ parameters DTW 85 25 ft btoc 10/23/14 1100 49 14 41 8 121 356 9Imed I 0 2 10/23/14 1103 Pause development 10/23/14 1716 52 13 9 8 16 354 9 med-hi 0 2 10/23/14 1728 60 12 9 8 04 344 6 med 0 2 10/23/14 1734 65 12 6 8 05 346 4 med 0 2 DTW 77 45 ft btoc 10/23/14 1736 End development MW-1 CwAT- (solder Associates WELL DEVELOPMENT/PURGING FORM Project Ref Pawnee Waste Project No 1407882A Location MW-2 Monitored By M Somogyi Date 10/23/2014 Time 1127 Well / Piezometer Data Depth of Well(from top of PVC) 71 33 feet Depth of Water(from top of PVC) 56 31 feet Radius of Casing 1 inches 0 083 feet Casing Volume 1 9 cubic feet 14 6 gallons Development/ Purging Discharge Data Purging Method Waterra HydroLift - Inertial Lift Pump Start Purging Date 10/23/2014 Time 1352 Stop Purging Date 10/23/2014 Time 1507 Monitoring Cumulative Date Time Volume Temp pH Spec Cond Turbidity Salinity Comments Discharged ('C) (S U) (µS/cm) (Relative) (ppt) (aals) 10/23/14 1139 Purge silt from the bottom of casing pre-surge 10/23/14 1145 2 5 13 9 8 00 505 0 v high -- DTW 56 80 ft btoc 10/23/14 1153 10 14 1 7 98 404 6 v high -- 10/23/14 1201 Start surge MW-2 Screened interval surged in 5 in lengths Surged 25 cycles 10/23/14 1350 End surge MW-2 Set foot valve near bottom of screen DTW 72 64 ft btoc 10/23/14 1352 Start purge MW-2 10/23/14 1357 30 17 2 7 97 376 2 v high 0 2 Pause de% 1408 40 15 7 7 95 384 4 high 0 2 DTW 56 75 ft btoc 10/23/14 1419 50 15 6 7 95 386 9 high 0 2 10/23/14 1429 60 15 4 7 95 380 3 med-hi 0 2 10/23/14 1439 70 15 6 7 94 379 2 med 0 2 10/23/14 1448 80 15 0 7 95 377 3 med 0 2 10/23/14 1457 90 15 4 7 96 365 6 low-med 0 2 DTW 56 88 ft btoc 10/23/14 1506 100 14 9 7 97 377 4 low 0 2 DTW 59 95 ft btoc 10/23/14 1507 End development MW-2 Golder Aw Associates WELL DEVELOPMENT/PURGING FORM Project Ref Pawnee Waste Project No 1407882A Location MW-3 Monitored By M Somogyi Date Time Well / Piezometer Data Depth of Wet(from top of PVC) 53 19 feet Depth of Water(from top of PVC) 47 3 feet Radius of Casing 1 inches 0 083 feet Casing Volume 0 8 cubic feet 5 7 gallons Development/ Purging Discharge Data Purging Method Waterra HydroLift - Inertial Lift Pump Start Purging Date r 10/22/2014 Time 1210 Stop Purging Date 10/23/2014 Time 1606 Monitonng Cumulative Date Time Volume Temp pH Spec Cond Turbidity Salinity Comments Di th rged ('C) (S U) (µS/cm) (Relative) (ppt) 10/22/14 1100 Start surge MW-3 Screened interval surged in 5 in lengths Surged 11 cycles 10/22/14 1205 End surge MW-3 Set foot valve near bottom of screen 10/22/14 1210 Start purge MW-3 10/22/14 1214 1 16 5 8 01 399 4 v high 0 2 10/22/14 1218 2 15 6 7 95 371 4 v high 0 2 10/22/14 1222 3 14 1 7 92 359 9 high 0 2 10/22/14 1226 4 13 7 7 92 364 0 high 0 2 Pause de% 1230 5 13 8 7 90 365 9 high 0 2 DTW 47 38 ft btoc 10/22/14 1240 7 14 8 7 91 351 3 med-hi 0 2 10/22/14 1255 10 15 7 7 92 345 3 med-hi 0 2 DTW 47 37 ft btoc 10/22/14 1312 15 15 3 7 91 343 5 to-med 0 2 DTW 47 35 ft btoc 10/22/14 1337 20 15 2 7 94 347 3 to-med 0 2 DTW 47 35 ft btoc 10/22/14 1354 25 15 2 7 92 344 7 low 0 2 DTW 47 35 ft btoc 10/23/14 1530 26 15 8 7 96 387 5 v high 0 2 10/23/14 1539 35 14 1 7 91 354 4 high 0 2 DTW 47 69 ft btoc 10/23/14 1604 65 15 0 7 96 348 3 low 0 2 10/23/14 1606 End development MW-3 fGolder ;Associates WELL DEVELOPMENT/PURGING FORM Project Ref Pawnee Waste Project No 1407882A Location MW-4 Monitored By M Somogyi Date 10/21/2014 Time 1319 Well / Piezometer Data Depth of Well(from top of PVC) 60 2 feet Depth of Water(from top of PVC) 49 24 feet Radius of Casing 1 inches 0 083 feet Casing Volume 1 4 cubic feet 10 6 gallons Development/ Purging Discharge Data Purging Method Waterra HydroLift - Inertial Lift Pump Start Purging Date 10/21/2014 Time 1600 Stop Purging Date 10/23/2014 Time 1646 Monitonng Cumulative Volume Temp pH Spec Cond Turbidity Salinity Date Time Discharged Comments Dis C) (S U) (µS/cm) (Relative) (ppt) foals) ( 10/21/14 1357 Start surge MW-4 Screened interval surged in 5 in lengths Surged 24 cycles 10/21/14 1555 End surge MW-4 Set foot valve near bottom of screen DTW 50 21 ft btoc 10/21/14 1557 Start purge MW-4 10/21/14 1603 1 19 1 7 80 411 6 high 0 2 10/21/14 1610 2 16 5 7 91 412 4 high 0 2 DTW 51 43 ft btoc 10/21/14 1615 3 15 9 7 92 392 3 high 0 2 10/21/14 1622 4 15 7 7 96 379 1 high 0 2 Pause del. 1627 5 16 1 7 94 377 9 high 0 2 DTW 52 70 ft btoc 10/21/14 1638 7 17 2 7 97 373 8 high 0 2 10/21/14 1653 10 17 7 98 363 5 med-hi 0 2 DTW 54 09 ft btoc 10/21/14 1721 15 17 1 8 01 352 7 med-hi 0 2 DTW 54 80 ft btoc 10/21/14 1752 20 14 9 8 03 344 0 to-med 0 2 DTW 55 04 ft btoc 10/21/14 1823 25 13 5 8 04 348 5 low 0 2 DTW 54 78 ft btoc 10/21/14 1825 Pause development 10/22/14 825 Resume development 10/22/14 850 30 12 9 7 89 368 4 low 0 2 DTW 53 13 ft btoc 10/22/14 1029 40 13 8 7 96 342 9 to-med 0 2 DTW 55 75 ft btoc 10/22/14 1030 Pause development 10/23/14 1620 Resume development 10/23/14 1625 41 13 6 7 99 371 5 to-med 0 2 10/23/14 1631 47 5 13 6 7 92 371 7 low 0 2 DTW 58 80 ft btoc 10/23/14 1646 50 14 2 7 91 369 1 low 0 2 10/23/14 1647 End development ATTACHMENT A-2-4 AQTESOLVTM ANALYSIS OF SLUG TESTING DATA I . AIIII I I I I I I I I I III I I I I - I 1 0 . 1 - t (t o 0 a) N_ o U i z 0 . 01 0 O 0 . 001 I i Li I I L I_ I I I I II J 0 . 60 . 120 . 180 . 240 . 300 . Time ( sec) MW- 1 SI -01 PROJECT INFORMATION Company : Golder Associates , Inc . Client : Pawnee Waste. LLC Project: 140-7882A Location : Grover, CO Test Well : MW- 1 Obs . Well : NA Test Date : 10/24/2014 AQUIFER DATA Saturated Thickness : 13 . 13 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 0008005 cm/sec y0 = - 1 . 981 ft I . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 . h f , t r 0 . 1CO „ -0 0 . 01 N �o%o O C� ❑❑ Lb ❑ , C - O O 0 0 o 00 o d - O o Z ❑ ❑ o o ❑ O ❑ O O O O ❑ O 0 . 001 ❑ 1 . 0E-4 0 . 600 . 1 . 2E + 3 1 . 8E + 3 2 . 4E + 3 3 . 0E + 3 Time ( sec) MW- 1 _SW-01 PROJECT INFORMATION Company : Golder Associates , Inc. Client : Pawnee Waste LLC Project: 140-7882A Location : Grover, CO Test Well : MW- 1 Obs . Well : NA Test Date : 10/24/2014 AQUIFER DATA Saturated Thickness : 13 . 13 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 0008153 cm /sec y0 = 2 . 297 ft 1 1 1 1 1 I I I 1 IIII IIII I I I I - 01 _ - a= -a CO a) I 001 N ❑ _ o Ta "...rah= 13OOCO ° 0 _ Z ❑ 0 _ 0 001 0 0 1 0E-4 1 I I I I ! I I I I I l I ! I l I I 0 600 1 2E+3 1 8E+3 2 4E+3 3 0E+3 Time (sec) MW-1 SI-02 PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-1 Obs Well NA Test Date 10/24/2014 AQUIFER DATA Saturated Thickness 13 13 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 0 0008005 cm/sec y0 = -1 981 ft 1 . f - i H E 0 . 1 a) O a) N C6 O ❑ z 001 O O O O o O ❑ O O 0 . 001 - r r r r _ , _1- , 1 IIII 0 . 100 . 200 . 300 . 400 . 500 . Time ( sec) MW- 1 _SW-02 PROJECT INFORMATION Company : Golder Associates , Inc. Client : Pawnee Waste, LLC Project : 140-7882A Location : Grover, CO Test Well : MW- 1 Obs . Well : NA Test Date : 10/24/2014 AQUIFER DATA Saturated Thickness : 13 . 13 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 0007691 cm /sec y0 = 1 . 774 ft 1 I I i i I I I I IIII I I I I I I I I _ - 0 01 _ as — a) Eftb z $ cp N ❑ Ts E ° z 001 - 0 001 I I I I I I I I I I I I I I I I I 0 60 120 180 240 300 Time (sec) MW-2 SI-01 D PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-2 Obs Well NA Test Date 10/27/2014 AQUIFER DATA Saturated Thickness 14 97 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 0 003828 cm/sec y0 = -1 192 ft 1 I I I I I I I III I I I I I - 01 _ _ - 0 -� - °°° - m °° N ° 0 ° - 0 ❑° OD Z 001 ° ° ❑ ° ° ° 0 001 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 40 80 120 160 200 Time (sec) MW-2 SW-01 PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-2 Obs Well NA Test Date 10/27/2014 AQUIFER DATA Saturated Thickness 14 97 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 0 00773 cm/sec y0 = 1 555 ft IIII I I I } 0 . 1 _ a} O POO- z 0 . 01 \ 0000Occ ❑ ❑ O 0 . 001 I I I I I I I. I I } 0. 40 . 80 . 120 . 160 . 200 . Time ( sec) MW-2.S1 -02 PROJECT INFORMATION Company : Golder Associates , Inc . Client : Pawnee Waste, LLC Project: 140-7882A Location : Grover, CO Test Well : MW-2 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 14 . 97 ft Anisotropy Ratio (Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 003828 cm/sec y0 = - 1 . 192 ft 1 I I I i I I I --- -- - -- - --- -- - - ---- - ---- --- --- 01 — ❑ a 41❑ a) _ — ❑ a) TES cio N ❑ 00 0 O ° ° z 001 _ ❑ ❑ ° ° ❑° Du O ❑ ❑ ❑ O ❑ ❑ ❑ - 0 001 I I 1 I I I I I I I I I I I 0 80 160 240 320 400 Time (sec) MW-2 SW-02 PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-2 Obs Well NA Test Date 10/27/2014 AQUIFER DATA Saturated Thickness 14 97 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 0 00969 cm/sec y0 = 3 658 ft 1 . c I I I I I I I I I III I I I 1 1 I I I I -- F _ 0 . 1 _ Co a) z 0 . 01 0 0 0 0 0 . 001 -- 1 1 1 1 1 1 I -L - ► I 1 ► I I I I 0 . 8. 16 . 24 . 32 . 40 . Time ( sec) MW-3_S I -01 PROJECT INFORMATION Company : Golder Associates , Inc. Client: Pawnee Waste, LLC_ Project: 140-7882A Location : Grover, CO Test Well : MW-3 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 01158 cm/sec y0 = - 1 . 282 ft 1 . ' 1 I I I I I I I 1 T T 1 i II: 0. 1 _ (1) \ IA (t3 D z 0 . 01 0 D f - D , 0 . 001 - I 1 __ III I __ = 1 1 Y 0 . 8 . 16 . 24 . 32 . 40 . Time ( sec) MW-3_SW-01 PROJECT INFORMATION Company : Golder Associates , Inc . Client : Pawnee Waste LLC Project : 140-7882A Location : Grover, CO Test Well : MW-3 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 01395 cm /sec y0 = 1 . 528 ft 1 . 4 I III t 0 . 1 se N o O O O o F O z 0 . 01 U ° o ° 0 . 001 --I I I I __ I I I I L I ► , -L ► 1- 0 . 20 . 40 . 60 . 80 . 100 . Time (sec) MW-3 SI -02 PROJECT INFORMATION Company : Golder Associates , Inc. Client : Pawnee Waste , LLC Project: 140-7882A Location : Grover, CO Test Well : MW-3 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0. 01014 cm/sec y0 = -0 . 9421 ft 1 . II fl 1111 1 I I 1 I I I I - 1 I 1 1 _ co — Q) O _ ° co ❑ O OO O ° O z 0 . 01 ° ir° o -❑ ❑ O ft O D L - O 0. 001 1 1 1 1 1 11 1 _1_1_ 1 11 I 1 1 1 1 0 . 40 . 80 . 120 . 160 . 200 . Time (sec) MW-3_SW-02 PROJECT INFORMATION Company : Golder Associates , Inc . Client: Pawnee Waste , LLC Project: 140-7882A Location : Grover, CO_ Test Well : MW- 3 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( KzIKr) : SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 0139 cm/sec y0 = 1 . 373 ft 1 . I 1 I 1 I III I I I 1 I I I I _ lilt _ -e - 0 . 1 E ct _ a) _ - O a) N _ ❑ ❑ Co O O O z 0 . 01 O O O 0 . 001 1 I I I I I I I I i I I 1 0 . 10 . 20 . 30 . 40 . 50 . Time ( sec) MW-3_SI -03 PROJECT INFORMATION Company : Golder Associates , Inc. Client : Pawnee Waste , LLC Project: 140-7882A Location : Grover, CO Test Well : MW-3 Obs . Well : NA • Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( KzIKr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 01014 cm/sec y0 = - 1 . ft I . ► 1 ► t - ► 1 1 ► I I ► ► ► 1 ► I 1 ► ► - Cll _ 1 G CD z 001 _ - ❑ ❑ ❑ ❑ ❑ ❑ 0 . 001 III ' It ► 0 . 10 . 20 . 30 . 40 . 50 . Time (sec) MW-3_SW-03 PROJECT INFORMATION Company : Golder Associates , Inc . Client : Pawnee Waste, LLC Project: 140-7882A Location : Grover, CO_ Test Well : MW-3 Obs . Well : NA Test Date : 10/27/2014 AQUIFER DATA Saturated Thickness : 5 . 88 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 0 . 01364 cm/sec y0 = 1 . 326 ft 1 I I I I I I I I 1 1 I I I I I I I I I I _ -- - --- - -- ---- - -- -- -- - -- ---- - - ---- ---- ------ - E 01 _ _ ca _ — a) ❑ — ❑❑❑ — N ❑❑❑ - ❑❑ - s ❑❑ E 0 O ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ C ❑ Z 001 _ - ❑ - 0 001 I I I I IIII I I I I I I I I I I I I 0 1 2E+3 2 4E+3 3 6E+3 4 8E+3 6 0E+3 Time (sec) MW-4 SI-01 PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-4 Obs Well NA Test Date 10/24/2014 AQUIFER DATA Saturated Thickness 12 18 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 0 000121 cm/sec y0 = -0 7169 ft T. 1 . 1 I 1 1 I I I I 1 I 1 1 - I 1 1 1 1 I 1 0 . 1 ct — a) O - O a) ° — o CI i O O 0 z 001 ° O - 0 O C j 0 . 001 1 1 1 1 I 1 1 i _ I 1 1 1 1 1 I i _L 0 . 800 . 1 . 6E+ 3 2 . 4E + 3 3 . 2E+ 3 4 . 0E+ 3 Time (sec) MW-4 SW-01 PROJECT INFORMATION Company : Golder Associates , Inc. Client: Pawnee Waste, LLC I Project: 140-7882A Location : Grover, CO Test Well : MW-4 Obs . Well : NA Test Date : 10/24/2014 AQUIFER DATA Saturated Thickness : 12 . 18 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION Aquifer Model : Confined Solution Method : Hvorslev K = 6 . 008E -5 cm/sec y0 = 0 . 824 ft 1 i i i i i IIII I I I I I I I I IIII - - cs a) = 01 _ ❑ - ❑v Cu ❑❑❑ N - ❑ OD, - ❑ ❑ ❑ - ❑ -❑ ❑ ❑ ❑ - ❑ ❑ ❑ ❑ ❑ ❑ - 0 01 I I I I I I I I IIII I I I I IIII 0 600 1 2E+3 1 8E+3 2 4E+3 3 0E+3 Time (sec) MW-4 SI-02 PROJECT INFORMATION Company Golder Associates, Inc Client Pawnee Waste,LLC Project 140-7882A Location Grover, CO Test Well MW-4 Obs Well NA Test Date 10/24/2014 AQUIFER DATA Saturated Thickness 12 18 ft Anisotropy Ratio (Kz/Kr) 1 SOLUTION Aquifer Model Confined Solution Method Hvorslev K = 6 201E-5 cm/sec y0 = -0 7219 ft I . TT , ! I I (13 Ch -0 3 . 1 — �G - - --fa) G G ❑ O ° 0 O _ ° ° ° ❑ z 0 ❑ D o o c - 0 . 01 I I II III L 1 ! -- 1 I I I 1 J 0 . 1000 . 2 . 0E + 3 3 . 0E + 3 4 . 0E +3 5 . 0E+3 Time ( sec) MW-4_SW-02 PROJECT INFORMATION Company : Golder Associates , Inc. Client: Pawnee Waste, LLC Project : 140-7882A Location : Grover, CO Test Well : MW-4 Obs . Well : NA Test Date : 10/24/2014 AQUIFER DATA Saturated Thickness : 12 . 18 ft Anisotropy Ratio ( Kz/Kr) : 1 . SOLUTION s Aquifer Model : Confined Solution Method : Hvorslev K = 6 ._644E-5 mi /sec y0 = 1 . 09 ft I SII."vh: DATA LNTR1 SIILFT 1 AS RECEIVED WATER CONTENT MONTH AND YEAR : October- 14 Mass Wet Soil & Tare (gm) 131 .39 PROJECT NAME : PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 125 .31 PROJECT NUMBER : 1407882A.002 Mass of Tare (gm) 28.92 SAMPLE ID : I3H-01 Depth (ft) 14- 15 Mass of Water (gm) 6.08 TYPE ;Bag Mass of Dry Soil (gm) 96.39 Moisture Content (%) 6.3 Visual Description (Colder Procedure ) : SILTY SAND, pale brown, moist IIYGROSCOPI (: MOISTURE SIEVE SAMPLE Mass Soil & Tare (gm) 129.83 USCS -- I Mass Dry Soil & Tare (gm) 123 .79 Tare Mass (gin) 28.01 11 . -- TEST BY RU Moisture Content (%) 6.3 P I . -- DATE SET UP 10/ 1 /2014 Pt -- CHECKED BY I . R I O" FAL MASS OF SAMPLE USED FOR . ANALYSIS, CORRECTED FOR HYDROSCOPIC MOISTI * RE REVIEW BY M 1 I Saiuple+Tare (gm) 492 .98 Tare Mass (gm) 229.72 Mass of Sample (gm) 263 . 3 Corrected Mass (gm) 247.6 coarse gravel 0.00 fine gravel O .OO 0 . 00 Test Method for 100% finer than 3" only! coarse sand 0.46 PLUS #4 MATERIAL SIEVE Individual Cumulative % medium sand 3 .47 Tare Mass (Mass + Tare) Mass Retained Passing fine sand 83 . 34 87 . 27 3-inch 0.0 100 fines 12 . 73 1 .5 -inch 0.0 IOt) Total! 100 . 00 1 -inch 0 .0 IN I I 3/4-inch 0.0 100 3/8-inch 0.0 100 #4 0.0 100 BACK SIEVE # 10 1 . 14 1 . 1 100 Amount Dispersing Agent (mL) 125 .00 Tare Mass #20 3 .09 3 . 1 99 Type Dispersion Device Mechanical I #40 9.74 9. 7 96 Length of Dispersion Period 1 Minute #60 37.89 37 . 9 85 # 100 126.34 126 .3 49 #200 216. 12 216. 1 13 Golder Associates I nc. SIEVE DATA E\ FRY SIIELT I AS RECEIVED WATER CONTENT MONTH AND YEAR : October- 14 Mass Wet Soil & Tare (gm) 147 .97 PROJECT NAME : PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 125 . 16 PROJECT NUMBER : 1407882A.002 Mass of Tare (gm) 34. 16 SAMPLE ID : BH-01 Depth (ft) 53 .0-54.0 Mass of Water (gm) 22 . 81 TYPE Bag Mass of Dry Soil (gm) 91 . 00 Moisture Content (%) 25 . 1 Visual Description ( Golder Procedure) : SILTY SAND, pale yellow, moist HYGROSCOPIC MOISTURE SIEVE SAMPLE Mass Soil & Tare (gm) 133 . 11 USCS -- I Mass Dry Soil & Tare (gm) 126.44 Tare Mass (gm) 33 .68 LL -- TEST BY EH Moisture Content (%) 7 . 2 PL -- DATE SET UP 10/2/2014 PI -- CHECKED BY - LR TOTAL MASS OF SAMPLE USED FOR ANALYSIS, CORRECTED FOR HYDROSCOPIC MOISTURE REVIEW BY MB Sample+Tare (gm) 429.41 Tare Mass (gm) 188.06 Mass of Sample (gm) 241 . 4 Corrected Mass (gm) 225.2 coarse gravel 0 .00 fine gravel 0. 00 0. 00 Test Method for 100% finer than 3" only! coarse sand 41 . 56 PLUS #4 MATERIAL SIEVE Individual Cumulative % medium sand 18 . 69 Tare Mass (Mass + Tare) Mass Retained Passing fine sand 14 . 82 75 . 07 3-inch 0. 0 100 fines 24.93 1 .5-inch 0 . 0 100 Total! 100 .001 1 -inch 0.0 100 3/4-inch 0.0 100 3/8-inch 0.0 100 #4 0.0 100 BACK SIEVE # 10 93 .58 93 .6 i 58 Amount Dispersing Agent (mL ) 125 .00 Tare Mass #20 123 .71 123.7 45 Type Dispersion Device Mechanical #40 135 .66 135 .7 40 Length of Dispersion Period 1 Minute #60 143 .47 143 .5 36 # 100 153 .21 153 .2 32 #200 169.03 _ 169.0 _ 25 Gdder der Associates I nc. SPLIT STEVE DATA E1N R ' S I IEE F I AS RECEIVED WATER CONTENT MONTH AND YEAR: � ctober- 14 Mass Wet Soil & Tare (gm) 136.81 PROJECT NAME: W/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 121 .63 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 27.48 SAMPLE ID: BH-01 Depth ( ft) 59. 5-60.0 Mass of Water (gm) 15 . 18 TYPE Bag Mass of Dry Soil (gm) 9 1 . 15 Moisture Content (%) 16 . 1 Visual Description ( Colder Procedure) : SAND, very dark gray, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) N 159. 15 USCS -- Mass Dry Soil & Tare (gm) 142.80 Tare Mass (gm) 28. 13 I . 1 . -- TEST BY RU Moisture Content (%) 14 . 3 PI . -- DATE SET UP 10/ 1 /2014 P 1 -- CHECKED BY LR Air-Dry MASS OF SAMPLE USED FOR FINER FRACTION SIEVE TEST REVIEW BY MB Sample+Tare (gm) 529.52 Tare Mass (gm) 230.58 Mass of Sample (gm) 298.94 coarse gravel 0.00 fine gravel 0.32 0. 32 Test Method for 100% finer than 3 " only ! coarse sand 16.22 PIA S #4 MATERIAL SIEVE Individual Cumulative % medium sand 63 . 78 Tare Mass (Mass + Tare) Mass Retained Passing fine sand 14 . 05 94 . 05 1 3-inch 0.0 100 fines 5 .63 1 .5 -inch 0.0 100 "IOtali 100.00 1 -inch U . 0 100 3/4-inch U . 0 100 3/8-inch U . O 100 #4 1 . 2 1 .2 100 Amount Dispersing Agent (mL) 125 .00 "Total Passing #4 428 . 6 <--(Uncorrected for 1 lygroscopic Moisture) Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 42.58 42.6 83 . 5 Tare Mass #20 147.24 147.2 43 . 6 1 #40 209.99 210 .0 19. 7 #60 228.38 4 228.4 12 . 7 # 100 237.80 237 . 8 9 . 1 #200 246.86 _ 246 .9 5 . 6 Gdder Associates 1 nc. i'l l 1" sl F:VF DA i t F` TR\ SHEET AS RECEIVED WATER CONTENT MONTH AND YEAR: October-14 Mass Wet Soil & Tare (gm) 121 .48 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 106. 14 PROJECT NUMBER: 1407882A.002 Mass of Tare (grn) 24. 82 SAMPLE ID: BH-02 Depth (ft) 4-9 Mass of Water (gm) 15.34 TYPE Bag Mass of Dry Soil (gm) 81 .32 Moisture Content (%) 18.9 t'SCS Description (ASTM D 2487): Silt with sand, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 110.91 USCS \1 L Mass Dry Soil & Tare (gm) 97.05 Tare Mass (gm) 24.34 LL 45 Moisture Content (°/o) 19. 1 PL 34 PI 11 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected fa Hygroscopic M cisture M ass of Sample (gm) 839.9 PLUS #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative % Fare Mass (Mass - Tare) Mass Retained Passing coarse gravel 0.00 I 3-inch 0.0 100 fine gravel 0.00 0.00 1 .5-inch 0.0 100 coarse sand 0.00 1 -inch 0.0 100 medium sand 1 .49 3/4-inch 0.0 100 fine sand 18.44 19.93 3/8-inch 0.0 100 fines 80.07 #4 0.0 100 Total , 100.00 Total Passing #4 1000.0 <--(Uncorrected for Hygroscopic Moisture) Cumulative 04 Mass Retained Mass Retained Passing BACK SIEVE # 10 100.0 Tare Mass #20 0. 13 0. 1 99. 7 #40 0.63 0.6 98. 5 #60 2.03 2.0 95.2 # 100 4.49 i 4.5 89.4 #200 8.42 8.4 80. 1 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50.31 Specific Gravity (aid) 2.65 Sped f ic Gravity (tested) Amount Di spas ng Agent (nl) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute 998. 16359 Zero Corr (Cc) 5.50 M era scus Corr. 1 .00 DATE TIME READING TEMP 10/2/2014 11:26 R T Temp Corr (mm) %Finer 10/2/2014 11 :28 32.50 20.2 -0.04 0.032 i 66.36 10/2/2014 11 :31 29.75 20.2 -0.04 0.021 59.85 10/2/2014 11 :41 24.50 20.2 -0.04 0.012 47.43 10/2/2014 11 :56 20.25 20. 1 -0.02 0.009 37.32 TEST BY EH/LR 10/2/2014 12:26 17.00 20.2 -0.04 0.006 29.68 DATE SET UP 10/1/2014 10/2/2014 15:36 13.00 20.2 -0.04 0.003 20.21 CHECKED BY LR 10/3/2014 11 :26 9.75 20. 2 -0.04 0.001 12.52 REVIEW BY Golder AssociatesI nc. SPI .11 SIEVE DATA ENTR1 SHE IA 1 AS RECEIVED WATER CON I I \ F MONTH AND YEAR: October-14 Mass Wet Soil & Tare (gm) 183.96 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 162.30 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 27.67 SAMPLE ID: BH-02 Depth (ft) 4-20 Mass of Water (gm) 21 . 66 TYPE Pail Mass of Dry Soil (grn) 134.63 Moisture Content (%) 16. 1 USCS Description (ASTM D 2487): Silt. ' CI ' p;lic bIONN H. itlolst HYGROSCOPIC MOISTL ' R L FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 109.86 US( s M1. Mass Dry Soil & Tare (gm) 98.78 Tare Mass (gm) 24.38 LL 40 Moisture Content (%) 14 9 PL 28 PI 12 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected fa Hygroscopic M assure M of Sarnpl e (gm) 870 4 PLUS #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative 0/0 Tare Mass (Mass + Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 ( ) Ilfi 1 .5-inch 0.0 100 coarse sand 1 . 19 1 -inch 0.0 100 medium sand 2.66 3/4-inch 0.0 100 fine sand 10.88 11 7 3/8-inch 0.0 100 fines 85.27 I - #4 0.0 100 Total 100.00 -rota] Passing #4 1000.0 --(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative % Mass Retained Mass Retained Passing BACK SIEVE # 10 0.52 0.5 98.8 Tare Mass #20 1 . 18 1 .2 97.3 I #40 1 .68 1 .7 96.2 #60 2.30 2.3 94. 7 # 100 3.43 3.4 92. 1 #200 6.43 6.4 85 . 3 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50. 14 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Dispersing Agent i ml ) 125.00 Type Dispersion Device Mechanical Length d DI specs on Period 1 Minute Zero Corr (Cc) 6.00 M eni s us Corr. 1 .25 DATE TIME READING TEMP 10/3/2014 1a31 R T (mm) %Finer 10/3/2014 10. 33 34.00 20.4 0.032 61 .30 10/3/2014 10: 36 30.25 20.3 0.021 52.70 10/3/2014 10:46 26.25 20.3 0.012 43.54 10/3/2014 11 :01 23.00 20.3 0.009 36.09 TEST Bl" EH/LR 10/3/2014 11 :31 20.25 20.2 0.006 29.79 DATE SET UP 10/2/2014 10/3/2014 14:41 16.75 20.2 0 003 21 .77 CHECKED BY LR 10/4/2014 10:31 13.00 20.4 0.001 13. 18 REVIEW BY MB Gdder Associates ) nc. SPLIT S1tiT DA TA ENTRY SHEET I AS RECEIVED WATER CONTENT MONTH AND YEAR: October-14 Mass Wet Soil & Tare (gm) 203.99 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 197.01 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 130.90 SAMPLE ID: BH-03 Depth (ft) 9-14 Mass of Water (gm) 638 TYPE Bag Mass of Dry Soil (gm) 66. 11 Moisture Content (%) 10.6 USCS Description (ASTM D 2487): Silty sand, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 122. 19 USCS SM 1 Mass Dry Soil & Tare (gm) 113.61 Tare Mass (gm) 24.97 l . I . 32 Moisture Content (%) 9 7 P1 . 28 Pt 4 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected for Hygroscopic M oisture Mass of Sample (gm) 597. 3 PLUS #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative cyo Tare Mass (Mass - Tare) Mass Retained Passing coarse gravel 2.06 3-inch 0.0 100 fine gravel 11 .89 1 .; . 95 1 .5-inch 0.0 100 coarse sand 5 .72 1 -inch 0.0, 100 medium sand 27.28 I 3/4-inch 12.3 12.3 98 fine sand 22.05 55. 0f\ 3/8-inch 25.4 37. 7 94 fines 31 .00 114 45.6 83.4 86 Total 100.00 Total Passing #4 563.7 --(Uncorrected for Hygroscopic Moisture) Cumulati‘ a Cumulative 96 Mass Retained Mass Retained Passing , BACK SIEVE-7, # 10 3.07 3. 1 80.3 Tare Mass #20 10.87 10.9 65.8 r140 17.72 17.7 53.0 #60 22.56 22.6 44.0 11100 26.09 26. 1 37. 5 4200 29.56 29.6 31 .0 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50.68 Specific Gravity (asst') 2.65 Specific Gravity (tested) Amount D i spers ng Agent ( nit ) 12 5.00 - Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute 998. 142749 Zero Corr (Cc) 6.00 M enis:us Corr. 1 .25 DATE TIME READING TEMP _ 10/3/2014 11: 19 R T Temp Corr (mm) %F ner 10/3/2014 11 :21 19.00 20.3 -0. 06 0.035 26 65 I 10/3/2014 11 :24 17.00 20.3 -0. 06 0.022 22. 93 10/3/2014 11 :34 14.75 20. 1 4 -0. 02 0.013 18.66 10/3/2014 11 :49 12. 75 I 20.2 -0 04 0.009 14.97 TEST BY EHILR 10/3/2014 12: 19 11 .50 _ 20.2 -0.04 0.007 12.65 DATE SET UP 10/1/2014 10/3/2014 15:29 9.75 20. 1 -0.02 0.003 9 35 CHECKED BY LR _ 10/4/2014 11 : 19 9.00 20.4 _ -0.08 0.001 _ 8_07 REVIEW BY MB Golder Associates I nc. SIEVE DATA ENTRY' NTTFTT j AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 178.55 PROJECT NAME : PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 135 .56 PROJECT NUMBER : I407882A.002 Mass of Tare (gm) 28.96 I SAMPLE Ill : 13H-03 Depth (ft) 69-74 Mass of Water (gm) 42 . 99 TYPE Bag Mass of Dry Soil (gm) 106.60 Moisture Content (%) 40. 3 Visual Description ( Colder Procedure): SILTY SAND, white, moist HYGROSCOPIC MOISTURE SIEVE SAMPLE Mass Soil & Tare (gm) 142.51 USCS -- Mass Dry Soil & Tare (gm) 128.53 Tare Mass (gm) 28.33 1 . 1 . -- TEST BY EH Moisture Content (%) 14. 0 PI , -- DATE SET UP 10/2/2014 PI -- CHECKED BY LR TOTAL MASS OF SAMPLE USED FOR ANALYSIS, CORRECTED FOR HYDROSCOPIC MOISTURE REVIEW BY MB Sample+Tare (gm) 434.00 Tare Mass (gm) 188 .67 Mass of Sample (gm) 245 .3 Corrected Mass (gm) 215. 3 coarse gravel 0 . 00 fine gravel 0 . 00 0 . 00 'Pest Method for 100% finer than 3 " only! coarse sand 51 .24 PLUS #4 MATERIAL SIEVE Individual Cumulative % medium sand 19. 91 Tare Mass ( Mass + Tare ) Mass Retained Passing fine sand 12 . 16 83 . 31 3-inch 0.0 100 fines 16.69 1 .5 -inch 0.0 100 'I otaI 100 .00 1 -inch 0. 0 100 3/4-inch 0.0 100 3/8-inch 0.0 100 #4 0 . 0 100 BACK SIEVE # 10 110.32 1 1 0 . ; 49 Amount Dispersing Agent (mL) 125 .00 'Fare Mass #20 140. 79 140. 8 35 Type Dispersion Device Mechanical #40 153 . 18 153 .2 29 Length of Dispersion Period 1 Minute #60 161 .21 4 161 .2 25 # 100 168 .79 168 . 8 22 #200 179 .37 _ 179 .4 _ 17 Gilder Associates Inc. SPLIT SIEVE DATA I'` TR\ SHEET AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 161 .87 PROJECT NAME: PPW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 147.59 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 28. 27 SAMPLE ID: 13H-04 Depth (ft) 4-9 Mass of Water (gm) 14.28 TYPE Bag Mass of Dry Soil (gm) 119.32 Moisture Content (%) 12.0 1 S( US Description (ASTM D 2487): Silt, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 132.20 USCS \ IL_ I Mass Dry Soil & Tare (gm) 120.76 Tare Mass (gm) 25.44 LL 38 Moisture Content (%) 12. 0 PL 31 PI 7 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected for Hygroscopic M cisture M c of Sample (gm) 892.8 PL1 S #4 NIATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative % Fare Mass (Mass - Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 0.00 1 .5-inch 0.0 100 coarse sand 0.04 1 -inch 0.0 100 medium sand 0.56 3/4-inch 0.0 100 fine sand 12.21 12.82 3/8-inch 0.0 100 fines 87. 18 #4 0.0 100 Total 100.00 Total Passing #4 1000.0 --(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative % Mass Retained Mass Retained Passing BACK SIEVE # 10 0.02 0.0 100.0 Tare Mass #20 0.08 i 0. 1 99.8 I #40 0.27 0.3 99.4 #60 0.67 0.7 98. 5 4100 1 .79 1 .8 96.0 #200 5.76 _ 5.8 87.2 HYDROMETER ANALYSIS Al R-DRY M ASS OF SAM PLE USED FOR HYDROMETER TEST M ass of Sample (gm) 1 50.34 Specific Gravity (aid) 2.65 Specific Gravity (tested) Amount Di specs ng Agent (mI) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute I 998. 142749 Zero Corr (Cc) 5.50 Meniscus Corr. 1 .00 DATE TIME READING TEMP 10/2/2014 11 : 16 R T Temp Corr (mm) %Finer 10/2/2014 11 : 18 30.25 20.3 -0.06 0.033 57.43 10/2/2014 11 :21 24.00 20.4 -0.08 0.022 43.57 10/2/2014 I 11 :31 17. 75 20.3 -0.06 0.013 29.62 10/2/2014 11 :46 14. 75 20.3 -0.06 0.009 22.94 4 TEST BY La LR 10/2/2014 12: 16 12. 50 20. 1 -0.02 0.007 17.85 DATE SET UP 10/ 1/2014 10/2/2014 15:26 10.25 20.2 -0.04 0.003 12.89 CHECKED BY LR 10/3/2014 11 : 16 8.50 20.3 -0.06 0.001 9.04 REVIEW BY MB Golder Associates nc. I SPLIT SIEVE DATA EV1 ltV SHEET I AS RECEIVED WATER COV"t F \ 1 MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 152.49 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 139.89 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 29. 11 SAMPLE ID: BH-04 Depth (ft) 5-25 Mass of Water (gm) 12.60 TYPE Pail Mass of Dry Soil (gm) 110.78 Moisture Content (%) 11 .4 1 SCS Description (ASTM D 2487 ) : Silt, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMITE Mass Soil & Tare (gm) 155.86 l \ ML Mass Dry Soil & Tare (gm) 142.83 Tare Mass (gm) 27.21 LL 36 Moisture Content (%) 11 ; PL 25 PI 11 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected for Hygroscopic M clIure M ass of Sample (gm) 898.7 1) 1 . 1 'S #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative 0/0 Tare Mass (Mass - Tare) Mass Retained Passing coarse gravel 0.00 J 3-inch 0.0 100 fine gravel 0.00 u 00 1 .5-inch 0.0 100 coarse sand 0.00 1 -inch 0.0 r 100 medium sand 0.82 3/4-inch 0.0 100 fine sand 9.65 10 1 3/8-inch 0.0 100 fines 89. 53 #4 0.0 100 Total 100.00 Total Passing #4 1000.0 --(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 100.0 Tare Mass #20 0. 13 0. 1 99.7 #40 0.37 0.4 99.2 #60 0.95 1 .0 97.9 # 100 2. 14 2. 1 95.3 "200 4.73 4 .7 89. 5 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST Mass of Sample (gm) cu 28 Specific Gravity (assd) 2 .65 Specific Gravity (tested) Amount Di specs ng Agent (ml ) 125.00 Type Di spas on Device Mechanical Length of Dispersion period 1 Minute Zero Corr (Cc) 6.00 M eni cus Corr. 1 DATE TIME READING TEMP 10/3/2014 10: 39 R T (mm) %Finer 10/32014 10 41 30.75 20.6 0.033 52.01 I 10/3/2014 10:44 24.75 20.5 0.022 38 73 10/3/2014 10: 54 20.00 20.4 0.013 28.22 10/3/2014 11 :09 17.25 20.3 0.009 22. 13 i TEST BY L1-l.: LR 10/3/2014 11 39 15.25 20.3 0 007 17 70 DATE SET UP 10/2/2014 10/3/2014 14 49 13.00 20.2 0.003 12 72 CHECKED BY LR 10/4/2014 10:39 11 25 20. 1 0.001 8.85 REVIEW BY MB Gdder Associates I nc. SPTI T STF\T D k T ' F`TTZ N. SHEET AS RECEIVED WATER CONTENT MONTH :AND YEAR: October-14 Mass Wet Soil & Tare (gm) 126.24 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 115.67 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 25.06 SAMPLE ID: BH-04 Depth (ft) 14- 19 Mass of Water (gm) c 10. 57 TYPE Bag Mass of Dry Soil (gm) 90.61 Moisture Content (%) 11 .7 USCS Description (ASTM D 2487): Sandy silt, very pale brown, moist HYGROSCOPIC MOISTURE TOR AlI \ 1 s .1-t I I . \ Li SAMPLE Mass Soil & Tare (gm) 127. 54 USCS ML I Mass Dry Soil & Tare (gm) 117.07 Tare Mass (gm) 27.24 I.I. NP Moisture Content (%) 11 . 7 PI, NP PI NP Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected for Hygroscopic M oisture M ass of Sample (gm) 895.6 PLUSH,* MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative % Tare Mass (Mass • Tare) Mass Retained Passing coarse gravel , 0.00 3-inch 0.0 100 fine gravel 0.00 0.UU? 1 .5-inch 0.0 100 coarse sand 0.42 1 -inch 0.0 100 medium sand 4.78 3/4-inch 0.0 100 fine sand 32.33 37. 53 3/8-inch 0.0 100 fines 62.47 #4 0.0 100 Total 100.00 Total Passing #4 1000.0 <--(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 0. 19 0.2 99.6 Tare Mass #20 0.83 0.8 98.2 #40 2.35 2.4 94. 8 #60 4.95 5.0 89. 1 # 100 9.24 9.2 79.6 #200 16.97 17.0 62. 5 HYDROMETER ANALYSTS AIR-DRY MASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sarnpl a (gm) 50.49 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Dispersing Agent (ml ) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute 998. 142749 Zero Corr (Cc) 5.50 M eni SOUS Corr. 1 .00 DATE TIME READING TEMP 10/2/2014 11:02 R T Temp Corr (mm) %Finer 10/2/2014 11 :04 23.75 20.3 i -0.06 0.034 42.71 10/2/2014 11 :07 18.25 20.2 -0.04 0.022 30.50 . 10/2/2014 11 : 17 14.00 20.3 -0.06 0.013 21 . 15 10/2/2014 11 :32 12. 50 20. 1 -0.02 0.009 17.74 TEST BY Rt, 1 . IZ 10/2/2014 12:02 10.25 20.2 -0.04 0.007 12.81 DATE SET UP 10/1/2014 10/2/2014 15: 12 8. 75 20. 3 -0.06 0.003 9.54 CHECKED BY LR 10/3/2014 _ 11 :02 _ 8.00 20.3 -0.06 0.001 7.88 REVIEW BY MB Golder Associates Inc. SPLIT SIEVE DATA ENTRY SHEET AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 128.21 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 98.54 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 27.90 SAMPLE ID: BH-04 Depth (ff) 54-59 Mass of Water (gm) 29.67 TYPE Bag _ Mass of Dry Soil (gm) i 70.64 Moisture Content (%) 42.0 Visual Description (Golder Procedure): SILTY CLAY, brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 129.99 USCS -- I Mass Dry Soil & Tare (gm) 100.85 Tare Mass (gm) 28.24 [1 -- Moisture Content (%) 40 1 PL -- PI -- Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected fa Hygaeoopic M aisture M ass of Sampi a (gm) 713 .6 P1 . 1 S #4 \1A FFRIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative °ro I arc \ lass (Mass I- Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 0.00 1 .5-inch 0.0 100 coarse sand 12.76 1 -inch 0.0 100 medium sand 18.70 3/4-inch 0.0 100 fine sand 23.28 51 - s 3/8-inch 0.0 100 fines 45.25 #4 0.0 100 Total 100.00 Total Passing #4 1000.0 <--(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative °io Mass Retained Mass Retained Passing BACK SIEVE # 10 4.60 4.6 87.2 Tare Mass #20 8.01 8.0 77.8 I #40 11.34 11 .3 68. 5 #60 14.00 14.0 61 .2 # 100 16.32 16.3 54.7 - #200 19.73 19.7 45. 3 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) L i 50. 50 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Dispersing Agent (ml) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute 998. 121806 Zero Corr (Cc) 6.00 M era sass Corr. 1 .25 DATE TIME READING TEMP 10/3/2014 11 :31 R T Temp Corr (mrn) %Finer 10/3/2014 11 :33 18. 75 2O4 -0.08 0.035 39.08 10/3/2014 11 :36 17.75 20.3 -0.06 0.022 36.25 10/3/2014 11 :46 16.00 20.4 -0.08 0.013 31 .45 10/3/2014 12:01 14.25 20.3 -0.06 0.009 26.53 TEST BY RU/LR 10/3/2014 12:31 I2. 50 20.3 -0.06 0.007 21 .68 DATE SET UP 10/1/2014 10/3/2014 15:41 11 .25 20. 1 -0.02 0.003 18.09 CHECKED BY LR 10/4/2014 11 :31 9.75 20.3 -0.06 0.001 14.05 REVIEW BY MB Golder AsaociatesI nc. SPT.TT STEW 1) 1T t V`TRY sHEE F AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 146.56 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 1 3•. 1 1 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 33.99 SAMPLE ID: BH-08 Depth (ft) 4-9 Mass of Water (gm) 13.45 TYPE Bag Mass of Dry Soil (gm) 9. 9. 12 Moisture Content (%) 13,6 L SCS Description (ASTM D 2487): Silt with sand, eery pale brown, moist HYGROSCOPIC MOISTURE FOR MINI 'S #4 SIEVE SAMPLE Mass Soil & Tare (gm) 130.62 USCS M L Mass Dry Soil & Tare (gm) 118.06 Tare Mass (gm) 15.01 LL 37 Moisture Content (%) I 3 5 PL 28 PI 9 Total M ass of Sample Used For Analysis, with Finer Split Fraction Corrected for Hygroscopic M oisture M ass of Sample (gm) 881 . 1 PLUS #4 MATERIAL SI F: V E Test Method for 100% finer than 3" only! Individual Cumulative % Tare Mass (Mass • Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 0.00 1 .5-inch 0.0 100 coarse sand 0. 18 1 -inch 0.0 100 medium sand 0.33 3/4-inch 0.0 100 fine sand 24.79 25.30 3/8-inch 0.0 100 fines 74. 70 114 0.0 100 l otal 100.00 Total Passing #4 1000.0 - :--(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 0.08 0. 1 99.8 Tare Mass #20 0. 10 0. 1 99.8 #40 0.23 0.2 99.5 #60 0.96 1 .0 97.9 # 100 3.42 3.4 92.4 #200 11 .34 11 .3 74.7 HYDROMETER ANALYSTS AIR-DRY M ASS OF SAM PLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50.87 Specific Gravity (assd) 1 ()5 Specific Gravity (tested) Amount Di specs ng Agent (ml ) 125.00 Type Dispersion Device Mechanical Length d Dispersion Period 1 Minute 998.058378 Zero Corr (Cc) 5. 50 Meniscus Corr. 1.00 DATE TIME READING TEMP 10/2/2014 11 :35 R T Temp Corr (mm) %Finer 10/2/2014 11 :37 25.75 20.7 -0. 15 0.034 47.74 r 10/2/2014 11 :40 21 .00 20.6 -0. 13 0.022 37.09 10/2/2014 11 :50 17.25 20.6 -0. 13 0.013 28.73 10/2/2014 i 12:05 14. 75 20.3 -0.06 0.009 23.01 TEST BY EH/LR 10/2/2014 12:35 12. 75 20.3 I -0.06 0.007 18.55 DATE sin UP 10/ 1/2014 10/2/2014 15:45 _ 11 .00 20.2 -0.04 0.003 14.59 CHECKED BY LR 10/3/2014 11 :35 8.75 20. 1 -0.02 0.001 9.53 REVIEW BY MB Golder Associates Inc. SPLIT SIEVE DATA ENTRY SHEET I AS RECEIVED WATER CONTENT MONTH AND YEAR: October-14 Mass Wet Soil & Tare (gm) 601 . 10 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 537.28 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 230. 13 SAMPLE ID: BH-08 Depth (ft) 5-25 Mass of Water (gm) 63.82 TYPE Pail Mass of Dry Soil (gm) 307. 15 Moisture Content (%) 20. 8 USCS Description (ASTM D 2487): Sandy silt, light yellowish brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 128.94 USCS ML I Mass Dry Soil & Tare (gm) 1 1 1 .85 Tare Mass (gm) 27.21 LL 42 Moisture Content (%) 20.2 PL 27 PI 15 Total M wed Sample Used Far Analysis, with Finer Split Fraction Corrected fa Hygroscopic M dsture M ass of Sample (gm) 18910.4 PLUS #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative % Tare Mass (Mass • Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 1 .37 1 .37 1 .5-inch 0.0 100 coarse sand 2.77 1 -inch 0.0 100 medium sand 8.76 3/4-inch 0.0 100 fine sand 24.79 36.32 3/8-inch 116.4 116.4 99 fines 62.31 #4 143. 1 259.4 99 Total 100.001 Total Passing #4 22416.9 <--(Lncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 1 . 17 1 .2 95.9 Tare Mass #20 2.74 2.7 92. 1 #40 4.87 4.9 87. 1 #60 7.27 7.3 81 .4 # 100 9.94 9.9 75. 1 #200 15.34 15. 3 62. 3 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50.07 Specific Gravity (assd) 2 65 Specific Gravity (tested) Amount Dispersing Agent (ml) 125.00 Type Dispersion Device Mechanical Length cf Dispersion Period 1 Minute Zero Corr (Cc) 6.00 Meniscus Corr. 1 .25 DATE TIME READING TEMP 10/3/2014 11 . 10 R T (mm) %F ner 10/3/2014 11 : 12 25.00 20.3 0.034 42.02 10/3/2014 11 : 15 23.25 20.2 0.022 37.88 1013/2014 11 :25 20.75 20.0 0.013 31.96 10/3/2014 11 :40 18.00 20. 1 0.009 25.45 TEST BY EH/LR 10/3/2014 12: 10 16.50 i 20.0 i 0.007 21 .90 DATE SET UP 10/2/2014 10/3/2014 15:20 14.50 20. 1 0.003 17. 16 CHECKED BY LR 10/4/2014 _ 11 : 10 12. 25 20 2 0.001 11 .84 REVIEW BY MB Golder AssociatesI nc. SPI,I I' STINT. DATt ENTRY SIILFT AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 131 .48 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 119.78 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 28 79 SAMPLE ID: BH-09 Depth (ft) 4-9 Mass of Water (gm) 11 . 70 TYPE Bag Mass of Dry Soil (gm) 90.99 Moisture Content (%) 12.9 l .SCS Description (ASTM D 2487): Silt with sand, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 130. 12 USCS ML Mass Dry Soil & Tare (gm) 118.54 Tare Mass (gm) 29.60 LL 37 Moisture Content (%) 13 .0 PL 28 PI 9 Total M wad Sample Used Far Analysis, with Finer Split Fraction Corrected for Hygroscopic M oisture M ass of Sample (gm) 884.8 I' I . l S #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative Tare Mass (Mass - Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 H! u( ) 1 .5-inch 0.0 100 coarse sand 0.02 1 -inch 0.0 100 medium sand 1 .62 3/4-inch 0.0 100 fine sand 22.01 c i 1 3/8-inch 0.0 100 fines 76.36 #4 0.0 100 Total 100.001 Total Passing #4 1000.0 <--(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 0.01 0.0 100.0 Tare Mass #20 0. 14 0. 1 99. 7 #40 0.73 r 0.7 98.4 #60 2.08 2. 1 95.3 # 100 4.49 4.5 89.9 #200 10.54 _ 10.5 76.4 HYDROMETER ANALYSIS Al R-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M aa5 of Sample (gm) 50.38 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Dispersing Agent (ml ) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute I 998.200853 Zero Corr (Cc) 5.50 Meniscus Corr. 1 .00 DATE TIME READING TEMP 10/2/2014 11 :09 R T Temp Corr (mm) %Finer 10/2/2014 11 : 11 26.00 20.0 0.00 0.033 48.24 10/2/2014 11 : 14 20.50 20.3 -0.06 0.022 36.03 10/2/2014 11 :24 16.75 20.2 -0.04 0.013 27.57 10/2/2014 11 :39 14.00 20. 1 -0.02 0.009 21 .36 TEST BY Rl_.. LIZ 10/2/2014 12:09 12.00 _ 20. 1 -0.02 0.007 16.87 DATE SET t I) 10/ 1/2014 10/2/2014 15: 19 9.75 20. 1 -0.02 0.003 11 .82 CI-IF( h1 1 ) Ill LR I 10/3/2014 11 :09 _ 9.00 20. 1 -0.02 0.001 10. 14 RED II. \\ in MB Gdder Associates I nc. 1 SPLIT SIEVE DAT 1 F` TR\ `l1FF F AS RECEIVED WATER CONTENT MONTH AND YEAR: October- I4 Mass Wet Soil & Tare (gm) 194.77 PROJECT NAME: PPW/PAWNEE WASTE E&P LANDFILL CO Mass Dry Soil & Tare (gm) 171 .56 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 32.65 SAMPLE ID: BH-10 Depth (ft) 5-25 Mass of Water (gm) 23.21 TYPE Pail Mass of Dry Soil (gm) 138.91 Moisture Content (%) 16. 7 1 SCS Description (ASTM D 2487): Silt, very pale brown, moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 122.40 USCS ML 1 Mass Dry Soil & Tare (gm) 110.63 Tare Mass (gm) 28.21 [.L 41 Moisture Content (%) 14. 3 PI, 31 PI 10 Total M ass Sample Used Fa Analysis, with Finer Split Fraction Corrected for Hygroscopic M oisture Mass of Sample (gm) 875 .0 PLUS #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative Tare Mass (Mass ± Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 0.00 1 .5-inch 0.0 100 coarse sand 0. 14 1 -inch 0.0 100 medium sand 0.65 3/4-inch 0.0 100 fine sand 6.41 7 20 i 3/8-inch 0.0 100 fines 92. 80 #4 0.0 100 Total 100.00 Total Passing t`4 1000.0 <--(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative °o Mass Retained Mass Retained Passing BACK SIEVE # 10 0.06 0. 1 99.9 Tare Mass #20 0.21 0.2 99. 5 I #40 0.35 0.4 99. 2 #60 0.72 0.7 98.4 # 100 1.34 1 .3 97.0 #200 3.20 _ 3.2 92. 8 HYDROMETER ANALYSIS AIR-DRY M ASS OF SAMPLE USED FOR HYDROMETER TEST M ass of Sample (gm) 50.78 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Dispersing Agent (nil ) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute Zero Corr (Cc) 6.00 Meniscus Corr. 1 .25 DATE TIME - READING TEM P 10/3/2014 11:00 R T (mm) %Finer • 10/3/2014 11 :02 37.50 20.4 0.031 68.08 10/3/2014 11 :05 32.50 20.5 0.020 56.83 10/3/2014 11 : 15 4 26.25 20.3 0.012 42.76 10/3/2014 11 :30 22.75 20.3 0.009 34.88 TEST BY EHJLR 10/3/2014 12:00 18. 50 20.2 0.006 25.32 DATE SET UP 10/2/2014 10/3/2014 15: 10 15 .00 20.2 0.003 17.44 CHECKED BY LR 1W4/2014 11 :00 I ? 00 20.2 0.001 10.69 REVIEW BY MR Golder As®ociatesI nc. SPLIT SIEVE DAT:k [Ni RN" SIHEL. T AS RECEIVED WATER CONTENT MONTH AND YEAR: October- 14 Mass Wet Soil & Tare (gm) 150.34 PROJECT NAME: PW/PAWNEE WASTE E&P LANDFILL/CO Mass Dry Soil & Tare (gm) 136.80 PROJECT NUMBER: 1407882A.002 Mass of Tare (gm) 27.92 SAMPLE ID: BH- 10 Depth (ft) 9-14 Mass of Water (gm) 13.54 TYPE Bag Mass of Dry Soil (gm) 108.88 Moisture Content (%) 12.4 USCS Description (ASTM D 2487): Silt, very pale brown. moist HYGROSCOPIC MOISTURE FOR MINUS #4 SIEVE SAMPLE Mass Soil & Tare (gm) 102.39 USCS ML I Mass Dry Soil & Tare (gm) 93.53 Tare Mass (gm) 21 . 73 LL 38 Moisture Content (%) 12.3 PL 31 P1 7 Total M ass of Sample Used Fa Analysis, with Finer Split Fraction Corrected for Hygroscopic M cisture M ass of Sarnpl a (gm) 890.2 PIA S #4 MATERIAL SIEVE Test Method for 100% finer than 3" only! Individual Cumulative 0/ Fare Mass (Mass + Tare) Mass Retained Passing coarse gravel 0.00 3-inch 0.0 100 fine gravel 0.00 u 00 I 1 .5-inch 0.0 100 coarse sand 0.00 1 -inch 0.0 100 medium sand 0.29 3/4-inch 0.0 100 fine sand 7.58 7 . 87 3/8-inch 0.0 100 fines 92. 13 #4 0.0 _ 100 Total` 100.00 Total Passing #4 1000.0 --(Uncorrected for Hygroscopic Moisture) Cumulative Cumulative Mass Retained Mass Retained Passing BACK SIEVE # 10 100.0 Tare Mass #20 0.02 I 0.0 100.0 #40 0. 13 0. 1 99.7 #60 0.31 0.3 99.3 # 100 0.89 0.9 98.0 #200 3.55 _ 3.6 92. 1 HYDROMETER ANALYSTS Al R-DRY M ASS OF SAM PLE USED FOR HYDROMETER TEST Mass of Sa npl a (gm) I 50.67 Specific Gravity (assd) 2.65 Specific Gravity (tested) Amount Di spers ng Agent (n1) 125.00 Type Dispersion Device Mechanical Length of Dispersion Period 1 Minute 998. 142749 Zero Corr (Cc) 5.50 Meniscus Corr. 1 .00 DATE TIME READING TEMP 10/2/2014 I 10:55 R T Temp Corr (mrn) %Finer 10/2/2014 10:57 31 .00 20.3 -0.06 _ 0.032 58.89 10/2/2014 11 :00 24.75 20.3 -0.06 0.022 45.03 10/2./2014 11 : 10 18.00 20.2 -0.04 0.013 30.02 10/2/2014 11 :25 13. 75 20.2 -0.04 0.009 20.60 TEST BY L:11 I_R 10/2/2014 11 :55 11 . 50 20. 2 -0.04 0.007 15.61 DATE SET UP 1 () 1 2014 10/2/2014 15:05 i 9.50 20.2 I -0.04 0.003 11 . 18 CHECKED BY LR 10/3/2014 10:55 _ 8.75 _ 20. 3 -0.06 0.001 9.56 REVIEW BY MR Golder Associates nc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERM EAM ETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILL/CO BOARD# 8 COMMENTS 1 Speafic gravity is assumed PROJECT NUMBER 1407882A 002 CELL# #3 2 Speamen was renddedto966%of the Maximum Dry Densty SAMPLE I D BH-02 al 4-20 Flow Pump Speed 8 and-01%of optimum masture content(per ASTM D698) SAMPLE TYPE Resold Techmaan RJM Sample Data Initial Final Speafic Gravity 265 Permeant Water Height,an 9 349 9 578 Badc Pressure,kPa 480 Diameter,an 7.306 7 385 Effective Consolidation Stress,kPa 34 Area,m' 0 004192 0 004284 Length During Permeation,an 9 578 Volume,m' 0 0003919 0 0004103 Area During Permeation,m' 0 004284 Mass g 708 52 746 40 M asture Content 25 2% 30 4% Dry Unit Weight,kN/m3 14.160 13 688 Dry Unit Weight,Ibf/ft3 90 1 87 1 Saturation,% 80 0% 89 5%_ _ USCS Desripbon(ASTM D 2487) Solt,very pale brown,mast Uncorrected Hydraulic DATEITI M E TEMP(°C) Ah(an) Flow(m3) Gradient Conductivity(an/s) 10/13114 10 00 20 7 113 -- -- -- 10113114 10 15 20 7 113 1 3E-07 11 80 2 77E-07 10/13/14 10 30 20 7 111 1 3E-07 11 69 279E-07 10/13/14 10 45 20 7 112 1 3E-07 11 64 2 81E-07 10/13/14 11 00 20 7 112 1 3E-07 11 69 2 79E-07 Average Corrected Hydraulic Conductivity(ants) 2 7E-07 DATE 10/14/2014 REVIEW MB Golder Associates Inc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE ESP LANDFILUCO BOARD# 5 _ COMMENTS 1 Speafic gravity isasaimed PROJECT NUMBER 1407882A 002 CELL# #7 2 Speamen was remolded to 96 2%of the Maximum Dry Denary SAMPLE ID BH-04(a)5-25 Flow Pump Speed 5 and+0 2%of optimum masture ardent(per ASTM D698) SAMPLE TYPE Remold Techniaan RJM Sample Data Initial Final Speafic Gravity 265 Permeant Water Height,an 9 346 9 539 Badc Pressure,kPa 550 Diameter,an 7 312 7 403 Effective Consolidation Stream kPa 34 Area,m' 0 004200 0 004304 Length During Permeation,an 9 539 Volume,m' 0 0003925 0 0004106 Area During Permeation,m' 0 004304 Mass,g 702 83 744 33 Moisture Content 24.0% 31 3% Dry Unit Weight,kN/m' 14.171 13 539 Dry Unit Weight,Ibf/ft' 90 2 86 2 Saturation,% 76 1% 90 3% USCS Desolation(ASTM D 2487) Silt,very pale brown,mast Uncorrected Hydraulic DATE/TI M E TEMP(°C) t h(an) Flow(m3) Gradient Conductivity(an/s) 10/10/14 920 20 7 92 -- -- -- 10/10/14 9 25 20 7 92 4 2E-07 9 64 3 37E-06 10/10/14 9 30 20 7 93 4 2E-07 9 70 3 35E-06 10/10114 9 35 20 7 90 4 2E-07 9 59 3 39E-06 10/10/14 940 20 7 91 4 2E-07 949 3 43E-06 Average Corrected Hydraulic Conductivity(ants) 3 3E-06 DATE 10/14/2014 REVIEW MB Golder Associates Inc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILUCO BOARD# 8 COMMENTS 1 Speafic gravity is assumed PROJECT NUMBER 1407882A 002 CELL# #5 2 Speamen was randdedto962%of the Maximum Dry Density SAMPLE ID BH-08 Cal 5-25 Flow Pump Speed 6 and at optimum masture content(per ASTM D698) SAMPLE TYPE Remold Techniaan RJM Sample Data Initial Final Speafic Gravity__ 265 Permeant Water Height,an 9 353 9 532 Bads Pressure,kPa 480 Diameter,an 7 312 7 377 Effective Conenlidation&reed kPa 34 Area,m' 0.004199 0 004275 Length During Permeation,an 9.532 Volume,m3 0 0003927 0 0004074 Area During Permeation,m2 0 004275 Ma%g 698 18 731.17 M asture Cadent 27 4% 33 7% Dry Unit Weight,kN/m3 13 693 13 168 Dry Unit Weight,Ibflft3 87 2 83 8 Saturation,% 80 7% 91 6% USCS Description(ASTM D 2487) Sandy silt,light yellowish brown,mast Uncorrected Hydraulic DATE/TI M E TEMP(°C) 5h(an) Flow(m3) Gradient Conductivity(ands) 10/10/14 10 25 20 7 61 -- -- -- 10/10/14 10 30 20 7 58 1 7E-07 6 24 2 06E-06 10/10/14 10 35 20 7 60 1 7E-07 6 19 2 08E-06 10/10/14 10 40 20 7 63 1 6E-07 645 1 99E-06 10/10/14 10 45 20 7 62 1 7E-07 656 1 96E-06 Average Corrected Hydraulic Conductivity(an/s) 2 0E-06 DATE 10/14/2014 REVIEW MB Golder Associates inc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILUCO BOARD# 6 COMMENTS 1 Speafic gravity is assumed PROJECT NUMBER 1407882A 002 CELL# AA _ 2 Speamen was remolded to 96 3%of the M awmum Dry Densty SAMPLE ID BH-10(at 5-25 Flaw Pump Speed 7 and+0 8%of optimum masture cadent(per ASTM D698) SAMPLE TYPE Remold Techniaan RJM Sample Data Initial Final Speafic Gravity 265 Permeant Water Height,an 9 346 9 514 Badc Pressure,kPa 480 Diameter,an 7 306 7 368 Effective Consolidation Stre$,kPa 34 Area,m' 0 004193 0 004264 Length During Permeation,an 9 514 Volume,m3 0 0003918 0 0004057 Area During Permeation,m' 0 004264 Mass g 694 38 730 75 M asture Content 27 5% 34.5% Dry Unit Weight,kN/m3 13 632 13 136 Dry Unit Weight,Ibflft' 86 8 83 6 Saturation,% 80 4% 93 5% USCS Description(ASTM D 2487) Silt,very pale brawn,mast Uncorrected Hydraulic DATE/TIME TEMP(°C) Ah(an) Flow(m3) Gradient Conductivity(an/s) 10/10/14 12 40 20 7 70 -- -- -- 10/10114 12 50 20 7 73 1 7E-07 7 52 8 74E-07 10/10/14 13 00 20 7 70 1 7E-07 752 8 74E-07 10/10/14 13 10 20 7 69 1 7E-07 7 31 8 99E-07 10/10114 13 20 20 7 70 1 7E-07 7 31 8 99E-07 Average Corrected Hydraulic Conductivity(an/s) 8 7E-07 DATE 10/14/2014 REVIEW MB Golder Associates inc. FLOW PUMP#2 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILL/CO BOARD# 3 COMMENTS 1 Speafic gravity isasumed PROJECT NUMBER 1407882A 002 CELL# 18 SAMPLE ID BH-13 15-17/BH-13 15.0-15 35 ft Flaw Pump Speed 1 SAMPLE TYPE Intact Techniaan PRH Sample Data Initial Final Speafic Gravity 2 70 Permeant Water Height,an 7 468 7 361 Bads Presare,kPa 550 Diameter,an 4.923 4 909 Effective Consolidation Stress,kPa 34 Area,m' 0 001904 0 001893 Length During Permeation,an 7 361 Volume,m3 0 0001422 0 0001393 Area During Permeation,m2 0 001893 Mass g 197 85 242 66 M asture Content 11 9% 36 6% Dry Unit Weight,kN/m3 12 199 12.508 Dry Unit Weight,Ibflft3 77 7 79 6 Saturation,% 27 4% 88 4% Visual Description(Golder Procedure) SILT,very pale broom,dry Uncorrected Hydraulic DATE/TIME TEMP("C) ah(an) Flow(m3) Gradient Conductivity(an/s) 11/5/14 729 30 20 7 94 -- -- -- 11/5114 730 00 20 7 96 8 4E-07 12 91 1 15E-04 11/5/14 730 30 20 7 97 8 4E-07 13 11 1 13E-04 11/5/14 7 31 00 20 7 96 8 4E-07 13 11 1 13E-04 11/5/14 7 31 30 20 7 96 8 4E-07 13 04 1 13E-04 Average Corrected Hydraulic Conductivity(an/s) 1 1E-04 DATE 11/7/2014 REVIEW MB Golder Associates inc. FLOW PUMP#2 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER AS&M D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILL/CO BOARD# 1 COMMENTS 1 Speafncgravity is assumed PROJECT NUMBER 1407882A 002 CELL# 7 SAMPLE ID BH-13 15-17/BH-13(8)15 7-16 05 ft Flow Pump Speed 2 SAMPLE TYPE Intact Techniaan PRH Sample Data Initial Final Speafic Gravity 2 70 Permeant Water Height,an 7 462 7 553 Bads Pressure,kPa 550 Diameter,an 4 911 4 931 Effective Consolndatian Stres;,kPa 34 Area,m' 0 001894 0 001910 Length During Permeation,an 7 553 Volume,m3 0 0001414 0 0001443 Arcs During Permeation,m' 0 001910 Mass g 21054 24851 Masture Content 18 2% 37 7% Dry Unit Weight,kN/m3 12.357 12 273 Dry Unit Weight,Ibf!ft3 78 7 78 1 Saturation,% 43 1% 87 9% Visual Desaiphon(Golder Procedure) SILT,very pale brain,mast Uncorrected Hydraulic DATE/TI M E TEMP(°C) oh(an) Flow(m3) Gradient Conductivity(an/s) 11/5/14 909 20 7 165 -- -- -- 11/5/14 9 10 20 7 165 6 6E-07 21 85 2 64E-05 11/5/14 9 11 20 7 167 6 6E-07 21 98 2 62E-05 11/5/14 9 12 20 7 166 6 6E-07 22 04 2 61E-05 11/5/14 9 13 20 7 166 6 6E-07 21 98 2 62E-05 Average Corrected Hydraulic Conductivity(ants) 2 6E-05 DATE 11/7/2014 REVIEW MB Golder Associates inc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM O5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILL/CO BOARD# 7 COMMENTS 1 Speafic gravity isas umed PROJECT NUMBER 1407882A 002 CELL# AA SAMPLE ID BH-13 40-421 BH-13(d/.40 35.40 70 Flow Pump Speed 1 SAMPLE TYPE Intact Techniaan PRH Sample Data Initial Final Speafic Gravity 2 70 Permeant Water Height,an 7 430 7 155 Badc Pressure,kPa 280 Diameter,an 4 941 4.904 Effective Consolidation Stress,kPa 34 Area,m' 0.001918 0 001889 Length During Permeation,an 7 155 Volume,m3 0 0001425 0 0001351 Area During Permeation,m' 0 001889 M a g1 201 38 218 30 Masture Content 38 2% 47 5% Dry Unit Weight,kN/m' 10 029 10 742 Dry Unit Weight,Ibf/ft' 63 9 68 4 Saturation,% 62.9% 87 5% Visual Description(Golder Procedure) sandy SILT,ydlownsh brown,mast Uncorrected Hydraulic DATE/TIME TEMP(°C) ah(an) Flow(m3) Gradient Conductivity(ants) 11/3/14 523 30 20 7 18 -- --11/3/14 524 00 20 7 18 8 4E-07 2 52 5 89E-04 11/3/14 5 24 30 20 7 18 8 4E-07 2 52 5 89E-04 11/3114 5 25 00 20 7 18 8 4E-07 2 52 5 89E-04 11/3114 5 25 30 20 7 18 8 4E-07 2 52 5 89E-04 Average Corrected Hydraulic Conductivity(ants) 5 8E-04 DATE 11/412014 REVIEW MB Golder Associates Inc. FLOW PUMP#1 HYDRAULIC CONDUCTIVITY OF SATURATED POROUS MEDIA USING A FLEXIBLE WALL PERMEAMETER ASTM D5084 METHOD D,CONSTANT RATE OF FLOW PROJECT TITLE PW/PAWNEE WASTE E&P LANDFILL/CO BOARD# 6 COMMENTS 1 Speafic gravity isajmed PROJECT NUMBER 1407882A 002 CELL# 3 2 Final dimenacns are appraa mate-spea men fracgle and falling apart SAMPLE ID BH-13 40-42/BH-13 41 4-41 75 Flow Pump Speed 1 during take dam SAMPLE TYPE Intact Techmaan PRH Sample Data Initial Final Speafic Gravity 2 70 Permeant Water Height,an 7 472 7 471 Bads Prideure,kPa 410 Diameter,an 4 923 4.904 Effective Consolidation Stred kPa 34 Area,m' 0 001903 0 001889 Length During Permeation,an 7 471 Volume,m3 0 0001422 0 0001411 Area During Permeation,m' 0.001889 Mad g 216 79 234 60 M adure Content 37 1% 46 4% Dry Unit Weight,kN/m3 10 908 11 142 Dry Unit Weight,lbf/ft3 69 4 70 9 Saturation,% 70 1% 90 9% Visual Desription(Gdder Procedure) sandy SILT,ydlandi brown,mad Uncorrected Hydraulic DATE/TIME TEMP(°C) ah(an) Flaw(m3) Gradient Conductivity(an/s) 11/3/14 558 30 20 7 21 -- -- -- 11/3/14 559 00 20 7 21 8 4E-07 2 81 5 27E-04 11/3/14 559 30 20 7 22 8 4E-07 288 5 15E-04 11/3/14 6 00 00 20 7 22 8 4E-07 2 94 5 03E-04 11/3/14 600 30 20 7 22 8 4E-07 2 94 5 03E-04 Average Corrected Hydraulic Conductivity(an/s) 5 0E-04 DATE 11/4/2014 REVIEW MB Golder Associates inc. APPENDIX A-3-3 CONSOLIDATION TESTING RESULTS Initial Final Notes Height= 1 340 in 1 232 in Visual descnption(Golder procedure) SILT,very pale brown,moist Diameter= 1 927 in 1 927 in Atterberg Limits(ASTM D4318) LL=— PL=-- PI=-- Area= 2 916 in' 2 916 in2 Percent Finer(ASTM D422) 3/4 in=-- No 4= - No 200=-- Volume= 3 908 in3 3 593 in3 Specimen Type X Intact Reconstituted Water Content= 23 7% 35 7% Remold Targets Not applicable Specific Gravity= 2 70 (Assumed) 2 70 (Assumed) Water Content of Tnmmmgs(ASTM D2216) 21 8% Height of Solids= 0 6166 in 0 6166 in Trimming Procedure Speciman trimmed around consolidometer ring Void Ratio= 1 173 0 998 Inundation Not inundated X Inundated at 1 0 ksf Degree of Saturation= 54 5% 96 6% Test Method A X B Wet Mass= 0 217 lb 0 238 lb Apparatus Frame No 3 Dry Mass= 0 175 lb 0 175 lb Final Water Content Specimen X Entire Partial Wet Unit Weight= 95 8 pcf 114 3 pcf Final Differential Height -0 0353 in Dry Unit Weight= 77 4 pcf 84 2 pcf Estimated Preconsolidation Stress 3 1 ksf --indicates test was not performed At End of Primary Consolidation At End of Load Duration Time Specimen Deformation Average Void Coefficient of Time to 50% Axial Stress Load Duration Deformation Height Axial Strain Void Ratio Deformation Specimen Height Axial Strain Void Ratio Method Ratio Consolidation Consolidation (ksf) (min) (in) (in) (%) (in) (in) (%) (ft'/day) (mm) Seating 0 10 1020 0 0000 1 3254 0 00 1 149 1 0 25 1440 0 0154 1 3100 1 15 1 125 2 0 50 4260 0 0283 1 2971 2 11 1 104 3 1 00 1440 0 0404 1 2850 3 01 1 084 4 1 00 1380 0 0404 1 2850 3 02 1 084 5 2 00 1440 0 0426 1 2828 3 18 1 080 6 4 00 1440 0 0543 1 2711 4 06 1 061 0 0656 1 2598 4 89 1 043 2(Root time) 1 068 2 207 0 4 7 8 00 4260 0 0952 1 2302 7 10 0 995 0 1108 1 2146 8 27 0 970 2(Root time) 1 013 2 469 0 3 8 16 00 1440 0 1378 1 1876 10 29 0 926 0 1560 1 1694 11 64 0 896 2(Root tune) 0 940 1 548 0 5 9 4 00 360 0 1486 1 1768 11 09 0 908 _ 10 1 00 1080 0 1369 1 1885 10 22 0 927 11 0 25 1500 0 1287 1 1967 9 60 0 941 Golder Associates Inc. Title ASTM D2435 Denver,Colorado ONE-DIMENSIONAL CONSOLIDATION TEST REPORT Job Short Title SPECIMEN AND SUMMARY DATA PW/PAWNEE WASTE E&P LANDFILL/CO Sample Technician Reviewed Start Date Job Number Figure BH-14 15-17 @ 15 95-16 3 ft RJM/MGC CCS 10/29/2014 1407882A 1 Void Ratio vs. Axial Stress 1 .200 . -- - - -- -- -- 1- ir i- i I I 1 1 . 100 _ t r' - 1 E T.: . --ill ! - -- I __-__ + , 4- O 1 .000 • .; ' �{ 4,4 .----_-r 4 j _ . —Na End of Load ,� � __ � � �.�; Duration © 0 ). 900 ■ —t-- + _ -I----_ 1-- ii-tHEEHT.:::: --+-- End of Primary Consolidation i 1 V - - --1- 1-F- ---t-1 0.700 - I 0.600 + 0. 1 1 10 100 Axial Stress, ksf Average Void Ratio vs. Coefficient of Consolidation 1 .200 - - - _ . - 1 . 100 ._ z 1 .000 -- -- ---- e 0. 900 - - - - - t L 0. 800 - - --- --- - - - ---- — • - t - 0. 700 - - - ---- 0. 600 r ,0. 1 1 10 Coefficient of Consolidation, ft2/day Golder Associates Inc. title : ASTM D2435 Denver, Colorado ONE-DIMENSIONAL CONSOLIDATION TEST REPORT Job Short Title: CONSOLIDATION PLOTS PW/PAWNEE WASTE I.ANDFARM/CO Sample: technician : Reviewed: Start Date: Joh Number: Figure: 1311- 14 15- 17 a 15.95- 16.3 ft. 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T - - - - - , .-_.-t- -r_ 4.T--•- 4 * . ▪ 1 .2750 ----- r --=- __ __h_ 1 .4... 1 .2700 _ - _ - fi Z 1 .2650 - :_ �_. Y �, _ 1 --ter-. 1 - } 4 fii i --.4_____-_ _ ..--~--«-�---•4. •. - -- -:--•••--._ -••__-•�•- } _ . 1 .2600 - } _ -_ -� - -. ,� _ _4 --r-_ _- _ ____ - _ . __ _ - - -* .- - - -r --r- -t- } - l .255'0 -` - t - _ _ . _ . _._ 1 0 5 10 15 20 25 30 35 40 Square Root of Time ( min1/2) (older Associates Inc. Title: ASTM D2435 Denver, Colorado _ ONE DIMENSIONAL CONSOLIDATION TEST REPORT Job Short Title: TIME-DEFORMATION PLOTS (2) PW/PAWNEE WASTE LANDFARM/CO Sample: Technician : Reviewed: Start Date: Job Number: 1 igure : 1311- 14 15- 1 7 a 15.95- 16.3 ft. 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Z _ _ �-- 680 _ . I. 1 ' r� . i - E f - B _ . 1 . 1660 - _�- L-. . , - -- - �- 1- - ,--t-- 1 _ . . r'-`---- -I _ 0 2 4 6 8 10 12 14 16 18 20 Square Root of Time ( min1/2) Golder Associates Inc. Title: ASTM D2435 Denver, Colorado ONE-DIMENSIONAL CONSOLIDATION TEST REPORT Job Short Title: TIME-DEFORMATION PLOTS (3) PW/PAWNEE WASTE LANDFARM/CO Sample : Technician: Reviewed : Start Date: Job ` umber: Figure: 1311- 14 15- 17 fil 15.95- 16.3 ft. 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Title: ASTM D2435 Denver, Colorado ONE-DIMENSIONAL CONSOLIDATION TEST REPORT Job Short Title: TIME-DEFORMATION PLOTS (4) PW/PAWNEE W.%STE I ,ANDFARMICO Sample: Technician: Reviewed: Start Date: Job Number: 'Figure : B11- 14 15- 17 C 15.95- 16.3 ft. RJM/MIGC CCS 10/29/2014 I 1407882A 6 Hello