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1 <br /> Sierra-Pacific Groundwater Consultants, Inc Sheet 1 of 2 <br /> 4911 Wordplay Drive,Suite 4 <br /> El Dorado Hills,California 95762 z Y Project Number 96-620 01 <br /> z <br />' BOREHOLE LOG FORM Hole Number B-21MW 2 <br /> Project Name Location <br /> California Tank Lines, Inc 3105 So El Dorado St <br /> Stockton, Calif <br /> Drilling Contractor Drill Type, Make, and Model <br /> West Hazmai Drilling Corp CME 85 <br /> Depth to Top of Rock NIA Depth of Casing and Size Hole Size 8-Inch <br /> 2-Inch Sched 40 PVC <br />' Elevation Angle from Vertical and Bearing Depth to Bottom of Hole <br /> NIA T D 50' <br /> Water Level. Fluid and Additives Date Start Date Finish Logger <br />' 35 8' None 11-12196 11-13-96 E Chase <br /> SAMPLE SOIL DESCRIPTION <br /> Q Standard <br /> FL <br /> Penetration Color, Name, Gradation or Plasticity, Particle Size Distribution, <br />' t af° °n o Results U Moisture Content, Relative Density or Consistency, Sod Structure, _N o <br /> E E a� 6'-6'-6' Mineralogy Misc o <br /> i= H''z (N) 3:0 _:j <br /> 0 0 - 0 3' Asphalt Concrete, No Base Material o <br /> CL 0 3 - 1 0' Dark gray silty clay, slight petroleum odor, moist, slightly stiff <br /> SM 1 0 - 2 0' Dark gray slightly silty fine to medium sand <br /> CL 2 0 - 2 5' Medium gray silty clay, slightly moist <br /> 2 5 - 5 0' Medium to dark gray slightly silty fine to medium sand <br /> 6 ■ �' 100% <br /> rCN <br /> 15 Traffic-Rated Steel <br /> m <br />' Well Box Set In <br /> Portland Cement <br /> Concrete <br /> 10 NQ0% 9-9-13 SM/ 10 0' Interbedded slightly silty sand and silty clay Clay is dark gray <br /> ■ m41CL to dark olive, slightly moist to moist, stiff Sand is medium <br />' gray to gray-brown, fine to medium, slighly moist, in 0 3 - 0 8'- <br /> thick layers (based on sample tube inspection) Slight <br /> hydrocarbon odor <br /> 15 ■ N r 100 9.13.27 SMI 15 0' As above, moderate hydrocarbon odor <br /> `" 246 CL <br /> ao <br /> Neat cement <br /> grout <br /> 1 2-Inch Schedule 40 <br /> 20 ■ u' o PVC Flush-Threaded 100 9-12-17 SMI 20 0' Odor persists, as above Blank Casing <br /> r m 222 CL <br /> Bentonite Ch+ps, <br /> Hydrated in Place\ <br /> i Lo <br /> ■ N t00% 19-21-35 SMI 25 0' Interbedded silty clay and silty fine to medium sand Clay <br />' Y m 279 CL is dark olive, moist, stiff, plastic Sand is dark gray, moist, <br /> firm, slightly porous, micaceous Moderate hydrocarbon <br /> Odor persists Lonestar#2-12 <br />' L Filter Pack Sand <br /> 3o rN 100 12-19-2a 30 0' Hydrocarbon odor persists, as above <br /> m 456 <br />