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GROUND ZERO ANALYSIS LOG OF WELL MW4 <br /> PROJECT GABBARD LOCATION 640 NORTH EL DORADO, STOCKTON CA PROJECT N0. 256 <br /> DATE DRILLED 12/14/00 LOGGED BY SEAN GARVEY REVIEWED BY JOHN P. LANE RG No. 6795 <br /> DRILLING COMPANY CASCADE ENVIRONMENTAL DRILLER ERNEST GUTIERREZ METHOD HOLLOW STEM AUGER <br /> BORE HOLE DIAMETER a IN DEPTH DRILLED 32 FT DEPTH TO WATER INITIAL 25.5 FT STATIC 22.0 FT <br /> CASING TYPE PVC F450 DIAMETER 2 IN SCHEDULE 40 INTERVAL O FT TO 7 FT <br /> SCREEN TYPE PVC F480 DIAMETER 2 IN SLOT SIZE 0010 IN INTERVAL 7 FT TO 32 FT <br /> FILTER PACK TYPE 2/12 SAND INTERVAL 5 FT TO 32 FT <br /> SURFACE SEAL TYPE 2' BENTONITE: 3' CONCRETE INTERVAL O FT TO 5 FT <br /> COMMENTS: PAGE 1 OF_]_ <br /> WELL DEPTH FID U.S.C. DESCRIPTION <br /> DETAIL FT. PPM BLOWCOUNT LOG <br /> 2 - <br /> 0-6/9.51 LEAN CLAY (CL): 0-5% FN, A SND; 95-IOD% FNS..H <br /> DRY STRNGTH, N DLTNCY, M TGHNSS, M PLST, BRN, <br /> NPO, DRY <br /> 4 CL <br /> 0 12 <br /> 26 <br /> 6 4 <br /> —lo- 36 <br /> 0 50 6/9.5-16/19.5' SANDY LEAN CLAY (CL): 20-30% FN, A, PRLY GRDD <br /> SND; 70-80% FNS, M-H DRY STRNGTH, N-SlW DLTNCY, <br /> M-H TGHNSS, M-H PLST, BRN, NPO. DRY <br /> 12 <br /> CL <br /> —14- <br /> 27 <br /> 0 33 <br /> 16 45 <br /> 16/19.5-21/24.5' SILTY CLAY (CL/ML): 10-15% FN, A SNO: 85-90% FNS, <br /> 18 M DRY STRNGTH, SLW DLTNCY, M TGHNSS, M PLST, BRN, <br /> NPO, MST <br /> GAB-MW4-20' <br /> mw 20 20 CL/ML <br /> 0 28 <br /> —22- <br /> 21/24.5-26/29.5' SILT (ML): 0-5% FN, A SND; 95-100% FNS, N DRY <br /> 24 STRNGTH. R DLTNCY, L TGHNSS, N PLST, BRN, NPO <br /> 23 <br /> 27 ML <br /> 26 0 50 <br /> —28- <br /> -30— 0 20 SW 26/29.5-31.5' GRDD SND;WELL EO-5% FND SAND S, BRN/WHT NPO, ECT A-SR, W <br /> 18 <br /> 32 p 23 ML <br /> 31.5-32' SILT (ML): 5-10% SND; 90-95% FI IWIIY TH. <br /> R DLTNCY, L TGHNSS, N PLST, B ,` T O <br /> ¢ JOHN R �( <br /> 36 . LANE <br /> No. 6795 <br /> 38 <br /> Q` <br /> FOF CA1aF� <br /> 40 <br />