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SPIE in* USCS WELL <br /> DEPTHNo, a P.I.D. CODE DESCRIPTION CONST. <br /> 1 <br /> m <br /> 20 + <br /> Silty clay, light olive green, slightly damp, <br /> S-20 58 ppmv ML hard (horizontal orange staining, black . <br /> 22 <br /> nodules) - <br /> - <br /> 24- <br /> S-25 <br /> 4 S--25 49 pp0 Clayey silt, damp, (black nodules) a <br /> 26 - <br /> 28 •• ` <br /> 30 S-30 47 pp <br /> 3 SA some clay, trace fine sand, brown slightly damp .• , <br /> 32- <br /> - 34- <br /> S-35 <br /> 2 34S-35 38 27 ' <br /> ppmv SP Sand fine—medium sand, dense <br /> 36 - <br /> TD <br /> 6Tb Total depth = 35-1/2 feet <br /> Boring backfilled with cement/bentonite slurry <br /> 38 <br /> 40- <br /> - 42- <br /> - 44- <br /> - <br /> 46- <br /> - 45- <br /> - 50- <br /> __j 50 <br /> tAIL�� LOG OF BORING: B-13 PLATE <br /> ARCO Service Station No. 6100 2725775 South Patterson Pass <br /> PROJECT NO. 30041-2 FILE NO <br /> Tracy, California <br /> 0041B10B <br />