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HORIZON ENVIRONMENTAL INC. ' <br /> 5011 Golden Foothill Parkway, Suite 7 Monitoring Well No _ MWA <br /> EI Dorado Hills, California 95762 <br /> (916) 939-2170 -- Fax (916) 939-2172 { <br /> Drilling Company Mitchell Drilling Project No 7039.16 <br /> Date Drilled 1115104 Site Quikstoo Station No 039 <br /> Drilling Method hollow stem auae Location Stockton,-CA <br /> Sampling Method split Uoon Geologist Craig Roth <br /> a m <br /> E og' Sod Description/ Well <br /> CL <br /> c # Comments Construction <br /> _ a <br /> rEa m c <br /> a <br /> Asphalt(4 inches) <br /> SILTY CLAY (CL) and GRAVEL (GM) <br /> 2 dark brown firm moist 8-inch dr m t r <br /> bore hole <br /> 3 SILTY SAND (SM) brown, fine sand, medium <br /> 4 dense, moist <br /> 5 5 5 <br /> 6 12 18 18 0 s SILTY SAND (SM) brown, fine sand, medium dense, moist <br /> 7 neat cement <br /> 8 <br /> 6 9 SILTY SAND (SM) brown, fine sand, medium dense, moist, <br /> 11 <br /> 10 10 22 18 18 0 10 with caliche <br /> 11 <br /> 12 — — — — — — — — — — — — — — — <br /> 13 <br /> 8 14 SANDY SILT (ML) brown, very fine sand, stiff, <br /> 15 15 118 18 0 15 caliche, low moisture <br /> 21 2"diameter <br /> 16 PVC casing <br /> 17 — — — — — — — — — — — — -- — <br /> 18 <br /> 5 19 SILT (ML)with trace fine sand brown, stiff, low plasticity, <br /> 10 moist to low moist <br /> 20 20 17 18 18 0 20 <br /> 21 <br /> 22 <br /> 23 <br /> 9 24 <br /> 12 SILTY SAND (SM) brown, very fine sand, medium <br /> 25 25 18 18 18 0 25 dense, moist <br /> 26 <br /> 27 <br /> 28 <br /> 7 29 <br /> 12 SILTY SAND (SM) olive brown, very fine sand, medium <br /> 3 30 18 18 18 0 30 dense, moist <br /> MW-4 Page -J— of—a— <br />