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HORIZON ENVIRONMENTAL INC. <br /> 5011 Golden Foothill Parkway, Suite 7 Monitoring Well No MW-4 <br /> EI Dorado Hills, California 95762 –y <br /> (916) 939-2170 -- Fax (916) 939-2172 <br /> Drilling Company Mitchell Drilling Project No 7039.16 <br /> Date Drilled 1115/04 Site Quikstap Station No-039 <br /> Drilling Method hQllow stem aider Location 5tocklon. QA <br /> Sampling Method s Ip �t spoon Geologist Craig Roth <br /> 2 E <br /> E o g' c Q zSoil Description/ Well <br /> o ) a a E.2 Comments <br /> Construction <br /> E W �� <br /> m c 9 <br /> c � <br /> 31 neat cement 04 <br /> 32 <br /> 33 <br /> 7 34 CLAYEY SILT (ML)with trace fine sand light brown, very <br /> 16 stiff,35 s , mois <br /> 35 21 1$ 1$ Q 35 2"diameter <br /> 36 PVC castng <br /> 37 <br /> 38 — — — — <br /> 8 39 SILTY SAND (SM) olive brown very fine sand, medium dense, <br /> 10 moist <br /> 40 40 19 18 18 0 40 <br /> 41 <br /> 42 <br /> bentonite <br /> 43 <br /> 7 44 SILTY SAND (SM) olive brown, very fine sand, medium <br /> 12 <br /> 45 45 24 18 18 0 45 dense, moist <br /> 46 <br /> 47 — <br /> — — — — -- — — — — — — — — --- . _ <br /> 48 <br /> 12 49 <br /> 17 SANDY SILT (ML) olive brown, very tine sand, very stiff, low _ <br /> 50 50 27 18 18 0 50 moisture <br /> 51 — <br /> 52 <br /> 53 #3 sand <br /> 8 54 CLAYEY SILT (ML) reddish brown, medium <br /> 19 <br /> 55 55 33 18 18 0 55 dense, low plasticity, moist <br /> 56 <br /> 57 <br /> 2"diameter PVC <br /> 58 0 020 -slot screen <br /> 10 59 <br /> 12 SILTY SAND (SM) reddish brown, very fine sand, <br /> s 60 17 ' 18.18 0 60 medium dense, very moist _ <br /> MW-4 Page of 3 <br />