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HORIZON ENVIRONMENTAL INC. <br /> 5011 Golden Foothill Parkway, Suite 7 Monitoring Well No MW-5 <br /> EI Dorado Hills California 95762 <br /> (916) 939-2174 -- Fax (916) 939-2172 <br /> Drilling Company Mitchell Drilling Project No 7039.16 <br /> Date Drilled 1115104 Site Qljilkstop Station No. 039 <br /> Drilling Method hollow step auger Location Stockton, CA <br /> Sampling Method split spoon Geologist Craig Roth <br /> E <br /> CL <br /> o o gCL a Sod Description/ Well <br /> w Comments <br /> o = m Construction <br /> CL 3 m H m <br /> E m t y <br /> ED- <br /> CL <br /> Asphalt (4 inches) <br /> 1 CLAYEY SILT ML dark brown, firm, <br /> ( ) 8-inch diameter <br /> 2 moist bore hole <br /> 3 <br /> 4 <br /> 5 4 5 <br /> 6 11 18 18 0 e SILTY SAND (SM)and GRAVEL (GM) brown fine sand, <br /> medium dense, moist <br /> 7 <br /> neat cement <br /> 8 <br /> 7 9 SANDY SILT (ML) light brown,very fine sand, stiff, moist <br /> 10 10 14 18 18 0 10 <br /> 11 <br /> 12 <br /> 13 <br /> 7 14 SANDY SILT (ML) light brown very fine sand, <br /> 15 15 20 18 18 0 15 stiff, moist <br /> 2"diameter <br /> 16 PVC casing <br /> 17 <br /> 18 <br /> 8 19 SANDY SILT (ML) light brown very fine sand, stiff, moist, <br /> z 20 19 18 18 0 20 lower sand content <br /> 21 <br /> 22 — — — — — — — — — — — — -- — — <br /> 23 <br /> 10 24 SILT (ML) light olive brown, low plasticity, stiff, moist <br /> 12 <br /> 25 25 16 18 18 0 25 <br /> 26 <br /> 27 <br /> 28 <br /> 7 29 <br /> 313016 SILTY SAND (SM) light brown,very fine sand, medium <br /> 22 118 18 0 30 dense, well sorted, moist <br /> MW-5 Page of 3 <br />