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' February 2021 _ 20378105 <br /> PROJECT: Holcim Boettcher Quarry 2020 Well Installation RECORD OF BORING MW-8 <br /> ' PROJECT NUMBER: 20378105 <br /> COORDINATES: N: 1,489,961.5 E: 3,097,714.4 <br /> LOCATION: MW-8 GROUND SURFACE ELEVATION: 5,247.5 ft <br /> ' DRILL RIG:CME-75 PROJECTION: UTM Zone 13 <br /> INCLINATION: -900 DATUM: North Zone State Plane NAD 83 <br /> ' DRILLING METHOD: HSA,air rotary,and air-coring HORIZONTAL UNITS:feet <br /> DATE STARTED: 11/11/20 10:00 TOTAL DEPTH:235 ft <br /> DATE COMPLETED: 1 111 3120 1 3:30 BOTTOM ELEVATION: 5,012.5 ft <br /> ' DRILL FLUIDS: none HOLE DIAMETER: 8 inches <br /> DRILL LUBRICANTS: air <br /> Z - - <br /> S <br /> �-ip x ELEV. w <br /> IL w LITHOLOGY DESCRIPTION Q_j DEPTHLU COMMENTS <br /> p w 0 (ft) <br /> 0 0.0-2.0 5245.5 MIL Cuttings collected and observed every 5 ft during HSA and <br /> 245 Light olive gray(5Y 5/2)SILT with gravel (<2 in),dry, no 2.0 air-rotary <br /> odor Continue with HSA into bedrock at 2 ft bgs-drillers feel bedrock <br /> 5.0 at 2 ft bgs <br /> 240 2.0-15.0 -NIOBRARA FORMATION- <br /> Cuttings similar to above Limestone <br /> 10. <br /> 235 Light brownish gray(5YR 6/1),limestone,dry,no odor Drilling becomes more difficult at 12 ft bgs,switch to air-rotary at <br /> 5232.5. 15 ft bgs <br /> ' 15. 15.0-20.0 15.0 <br /> 230 Medium gray(N5), limestone and calcareous shale,dry,no Limestone <br /> 20. odor 5227.5 <br /> 20.0 <br /> 225 20.0-115.0 - <br /> Light olive gray(5YR 6/1),limestone and calcareous shale, - <br /> ' 25. dry,no odor <br /> 220 <br /> 30. <br /> 215 <br /> I ' 35. <br /> 210 <br /> 40. <br /> ' 205 <br /> 45. <br /> 200 <br /> 50. <br /> ' 195 <br /> 55. <br /> 190 <br /> 60 Limestone <br /> ' 185 <br /> 65. Drilling becomes more difficult at 65 ft-harder material <br /> 180 <br /> 70. <br /> 175 <br /> N 75. <br /> 0 170 <br /> t d 80. <br /> a <br /> Z 165 <br /> (9 <br /> a 85. <br /> m <br /> 160 <br /> ' 90. <br /> i <br /> 0 155 <br /> w 95. <br /> J 150 <br /> = 100. Log continued on next page <br /> = DRILLING CONTRACTOR: Drilling Engineers GEOLOGIST: T. Hall <br /> DRILLER: Sean CHECKED: S. Harkins <br /> ' 0 G O L D E R DATE: 2/5/2021 SHEET 1 of 3 <br />