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HORIZON ENVIRONMENTAL INC <br /> 5011-Golden Foothill Parkway, Suite 7 <br /> El Dorado Hills California 95762 Monitoring Well No MW-4 <br /> (916)939-2170 -- Fax (916) 939-2172 <br /> Drilling Company Greaa Drtltina Project No 1792.12 <br /> Date Drilled 7/23103 Site ZE Auto Repair <br /> Drilling Method hollow-stem auger Location Stockton,DA <br /> Sampling Methodlljt-sp.Q Geologist Qift <br /> y C Q <br /> v C Soil Description/ <br /> Well <br /> a Q V a o a, a z Comments <br /> o LL z a E Construction <br /> C4 o ' Q ) V) <br /> m m c o <br /> 31 neat cement <br /> 32 bentonite <br /> 33 <br /> 34 CLAYEY SILT (ML) reddish brown, stiff, medium plasticity, <br /> 35- 35 -- 18 18 0 3s moist, no odor <br /> 36 <br /> 37 #3 sand <br /> 38 <br /> 39 CLAYEY SILT (ML) reddish brown stiff medium plasticity <br /> as 1818 o moist no odor <br /> p 4 — — — — — — w — — — -- <br /> 40 <br /> 41 <br /> 42 SILTY SAND (SM) brown, loose,welt sorted moist, no odor <br /> 43 — <br /> 44 <br /> 45 45 -- 1$ 1$ 0 a5 CLAYEY SILT (ML) brown firm, low plasticity moist no odor <br /> 46 <br /> 2 diameter PVC <br /> 47 0 020 -slot screen <br /> 48 <br /> 49 <br /> 5 50 — 18 18 0 5o SANDY SILT (ML) grayish brown,very fine sand, well- <br /> sorted, firm, moist no odor <br /> 51 <br /> 52 SILTY SAND (SM) grayish brown loose, well sorted,very <br /> 53 moist to wet <br /> 54 SANDY SILT (ML) grayish brown,very fine sand, stiff, <br /> 55 55 —` 18 1$ 0 55 low plasticity moist no odor TO = 55' <br /> 56 <br /> 57 <br /> 58 <br /> 59 <br /> 6 60 <br /> MW-4 Page 9 of <br />