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GROUND ZERO ANALYSIS LOG OF WELL MW2 PROJECT GABBARD LOCATION 640 NORTH ELDORADO, ETOCKTON CA PROJECT N0. 256 DATE DRILLED 12/13/00 LOGGED BY SEAN GARVEY REVIEWED BY JOHN P. LANE RG No. 6795 DRILLING COMPANY CASCADE ENVIRONMENTAL DRILLER ERNEST GUTIERREZ METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER a IN DEPTH DRILLED 32 FT DEPTH TO WATER : INITIAL 23.5 FT STATIC 22.3 FT CASING TYPE PVC F480 DIAMETER 2 IN SCHEDULE 40 INTERVAL 0 FT TO 7 FT SCREEN TYPE PVC F480 DIAMETER 2 IN SLOT SIZE 0,010 IN INTERVAL 7 FT TO 32 FT FILTER PACK TYPE 2/12 SAND INTERVAL 5 FT TO 32 FT SURFACE SEAL TYPE 2' BENTONITE: 3' CONCRETE INTERVAL 0 FT TO 5 FT COMMENTS: PAGE 1 OF 1 WELL DEPTH Flo SAMPLE to U.S.C. DESCRIPTION DETAIL FT. PPM BLOWCOUNT LOG 2 0-5.5/7.5' LEAN CLAY (CL): 0-59. FN, A SND; 95-100% FNS, H DRY STRNGTH, N DLTNCY, M-H TGHNSS, M PLST, BRN, NPO, DRY 4 CL 0 50 50 6 7 i 5.5/7.5-10.5/14.5' LEAN CLAY (CL): 5-10% FN, A SND; 90-95% FNS, H DRY B STRNGTH, N-SLW DLTNCY, M TGHNSS, M PLST, BRN, NPO, DRY :—to- 27 0 50 CL 12 14 10.5/14.5-21/24.5' SILTY CLAY (CL/ML): 10-15% FN, A SND; 65-90% FNS, 17 M-H DRY STRNGTH, N-SLW DLTNCY. M TGHNSS, M PLST, 0 2fi BRN, NPO, DRY 16 59 18 CL/ML GAB-MW2-20' 20 8 20 0 19 22 _ 24 IB 21/24.5-30' WELL GRADED SAND (SW): 95-1002 FN-CRS, A-SR, W 0 20 GRDD SND; 0-52 FNS, BRN/WHT, NPO, WET 26 27 SW — 28 30-31' SILT (ML): 0-52 FN, A SND; 95-100% FNS, N DRY 30 15 STRNGTH, R DLTNCY, L TGHNSS, N PLST, BRN, NPO. WET 20 p 25 ML tfi 31-32' SILTY CLAY (CL/ML): 0-52 FN, A SND; 95-1008 FNS, 32 0 19 CL M-H DRY STRNGTH, N DLTNCY, M-H TGHNSS, M-H PLST, BRN, WET ED GEO —34- - 4 y ��C ¢ JOHN P. 36 a LANE No. 6795 38 YJ, FDF CA "t 40