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ARCADIS TEMPORARY WELL LOG <br /> Infrastructure, environment buildings Page 1 of 1 <br /> Date Drilled: 8/26/2010 Drilling Contractor: Fisch Drilling ID: TW-1 <br /> Borehole Depth: 16 feet bgs Driller's Name: Rick Bertolino 11 Y <br /> Logged By: Jamey Peterson Drilling Method: Direct Push Client: Pacific Gas&Electric Company <br /> Reviewed By: Bill Copeland,PG No.8565 Sampling Method: Acetate Liners/Pump Location: McDonald Island Compressor Station <br /> Northing(1): 2184203.25 NAD83 Rig Type: Geoprobe Model 6600 1181 Zuckerman Road <br /> Easting(X): 6279092.93 NAD83 Bit Size: 2-inches Tracy,California 95206 <br /> Surface Elevation: NA Auger Size: NA Project#: B0092341.0000.00001 <br /> CL a 3 <br /> E t <br /> ip A E m a rn <br /> o Soil Boring a <br /> X1 rn <br /> t0)c m V Lithologic Description o, <br /> m a Construction Detail <br /> m <br /> C m o o g .e. <br /> d V <br /> r c Z c IX I* U) o o r <br /> a = A v o V o 'o a <br /> p` Q a O� t7 i D <br /> 0 NA SM 0 <br /> Gravel at surface <br /> 1 SILTY SAND(SM),loose,brown(10YR 5/3),dry,fine-to medium-grained,little 1 <br /> fine to medium subrounded to subangular gravel <br /> 2 2 <br /> a <br /> 3 3 <br /> 4 4 <br /> SP SAND(SP),light brown(10YR 8/3)with minor reddish brown(10YR 3/6),dry. <br /> 5 5 <br /> fine-grained,homogeneous,well sorted <br /> 6 6 <br /> a 3 <br /> 7 7 <br /> 8 0.0 Neat Cement <br /> 8 <br /> 9- <br /> 10 <br /> 10 0 3,5 10 <br /> 11 At 10.5 feet bgs,moisture increasing <br /> At 11.0 feet bgs,color change to gray(N5) <br /> 11 <br /> 12 <br /> 0.0 <br /> At 12.0 feet bgs,groundwater encountered SZ Temporary foot slot 12 <br /> PVC Pre-Pack pipea installed <br /> 13 in borehole for groundwater 13 <br /> sampling.Groundwater grab <br /> sample collected.Temporary <br /> 14 0 4 well materials re ad prior 14 <br /> to grout placement. <br /> 15 15 <br /> 16 0.0 <br /> Borehole terminated at 16.0 feet bgs 16 <br /> 17 17 <br /> 18- <br /> 19- <br /> 8 19 19 <br /> 20 20 <br /> Abbreviations: bgs=below ground surface, DP=direct push, HA=hand auger, NA=not available;not applicable, NAD83=North <br /> American Datum 1983, PID=photoionizabon detector, ppm=parts per million, USCS=Unified Soil Classification System <br /> Samples Collected: TW-01 (groundwater) <br />