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4 <br /> DEPTH BAM LE P.lD. gees DESCRIPTION WELL <br /> ® CODE: COUST. <br /> 20 62 <br /> 5-20 32ppmv SW Sand, fine— to coarse—grained, pale yellow brown, <br /> with trace shale fragments, slightly damp, dense. ; <br /> 22 <br /> 24 <br /> ML Silt, light gray, dry, no plastic&&, dense. <br /> S-25 B1 75 < <br /> 25 PPmv ML/SW Silt interbedded with sand, fine— to medium—grained <br /> sand deposits (approximately 3—En. thick), pale yellowish <br /> brown/dark reddish brawn, slightly damp. '< <br /> 28 <br /> 30 S-30 18 0 <br /> ppmv ML Silt, pale brown, wet, very stiff. <br /> 32 Total depth = 31 feet. �•� <br /> Boring backfilled with cement/bentonite slurry. <br /> Ground=.wafer:encountered at 30..feet.. <br /> � 34 <br /> 8 <br /> 3S <br /> 38 <br /> � a <br /> z i <br /> 40 f <br /> i <br /> 42 <br /> L <br /> 4 <br /> 45 <br /> # 413 <br /> 50 I <br /> 4 <br /> LOG OF RORI NGs B-2 PLATE <br /> ARCO service. station No.,2078 <br /> . .+pp►r.� a.osY...., 800 East Kettlemsn Lang a <br /> i PROJECT NO. 30008-2 Ledl, California <br />