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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) 939-2170 -- Fax (916) 939-2172 <br /> Drilling Company Mitchell Drilling Project No 703916 <br /> Date Drilled 1115104 Site Quikstop Station No. 039 <br /> Drilling Method hollow stem auger Location Stockton, CA <br /> Sampling Method split spoon Geologist Crala Roth <br /> m c u <br /> m <br /> E 0' 8 M G Sail Description/ Well <br /> o <br /> o.L z # ro C Comments <br /> Construction <br /> C1 L N— <br /> fE6 fY] C t] Q <br /> — a <br /> 31 neat cement <br /> 32 <br /> 33 <br /> 9 34 SILTY SAND (SM) light brown, very fine sand, medium <br /> 11 t dense, well sorted, moist 35 35 17 18 18 0 35 2"diameter <br /> 36 PVC casing <br /> 37 <br /> 38 <br /> 12 39 SILTY SAND (SM) light brown, very fine sand, medium dense, <br /> 19 well sorted, moist <br /> 40 40 23 18 18 0 40 <br /> 41 <br /> 42 <br /> bentonite <br /> 43 <br /> 6 44 <br /> 45 45 20 18 1$ 0 45 SANDY SILT (ML) olive brown, very fine sand, stiff, moist <br /> 46 — <br /> 47 <br /> 48 <br /> 10 49 <br /> 15 SANDY SILT (ML) olive brown, very fine sand, loose sand, <br /> 50=-50-i9-18.18 =0— 5a moist -- — -- <br /> 51 — <br /> 52 — <br /> 53 — ..— — — — , — — _ _ — — #3 sand <br /> 12 54 CLAYEY SILT(ML) olive brown, very stiff, low — <br /> 17 55 plasticity, moist <br /> 55 55 24 18 18 0 <br /> 56 - - <br /> 57 <br /> 2"drameter PVC <br /> 58 0 020"-slot screen — <br /> 14 59 _ <br /> 19 CLAYEY SILT(ML) olive brown, very stiff, low _ <br /> 6 60 28 18 18 0 6o plasticity, moist <br /> MW-5 Page 2_, of <br />