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GROUND ZERO ANALYSIS LOG OF WELL MW4 PROJECT A Y' LOCATION 2662 NORTH WILSON WAY STOCKTON CA PROJECT NO _327 0IL DRILLED __.D2/1 _QREG P. STAHL, RG No. 5023 SPECTRUM LOGGED BY-SEAN GARVEY REVIEWED BY ILLING COMPANY ORA N DRILLER DAVE GONZALESMETHOD HOLLOW STEM AUGER BORE HOLE DIAMETER a IN DEPTH DRILLED 60 FT DEPTH TO WATER INITIAL 47 FT STATIC FT CASING TYPE PVC FMO DIAMETER _. 2 IN SCHEDULE 40 INTERVAL 0 El TO 35 FT SCREEN TYPE AVO_F480 DIAMETER _ 2 IN SLOT SIZE00 020 IN INTERVAL 35 FT TO 60 FT FILTER PACK TYPE INTERVAL 33 FT SURFACE SEAL TYPE BENTONITE/NEAT CEMENT TO 60,_ FT COMMENTS INTERVAL 0 El TO 33 _ FT WELL DEPTH PID AMPL I U S C PAGE I OF-2— DETAIL FT PPM BLOWCOUNT LOG DESCRIPTION 2 4 1 7 0-11/14 5' LEAN CLAY (CL) 0-5% FN A SND, 95-100% FNS, H DRY 9 10 CL STRNGTH, N DLTNCY H TGHNSS, M PLST STIFF, SRN, 6 NPO, DRY-FAST CALCAREOUS 8 HA-MW4-10 ]02 15 35 40 12 14 HA-MW4-15 11/14 5-26/29 5 SILT (ML) 0-5Z FN A SND, 95-100% FNS N DRY 60 9 STRNGTH R DLTNCY L TGHNSS N PLST V STIFF, 16 25 BRN TO BRN/GRY, SL TO M-STRNG PO, DRY, CALCAREOUS 1B HA-MW4-20' 20 600 14 18 ML 18 22- 24 8 700 8 26 12 28 26/29 5-31/34 5' SILTY CLAY (CL/ML) 0-5% FN, A SND, 95-100% FNS, M-H DRY STRNGTH, SLW DLTNCY M TGHNSS, M PLST, HA-MW4-30 V STIFF GRY BRN STRNG PO - WENT TO RESPIRATORS 30 20 1D95 20 CL/ML 25 32 � 31/34 5-36/39 5 SILTY CLAY (CL/ML) 5-10% FN, A SND 90-95% FNS, 34 M DRY STRNGTH, SLW OLTNCY M TGHNSS, M PLST, M STIFF, GRY BRN 1085 5 6 CL/ML 36 7 36/39 5-41/44 5' SILTY CLAY (CL/ML) 15-20% FN-M, A-SA, W GRDD SND, 38 80-85% FNS, M DRY STRNGTH, SLW DLTNCY, M TGHNSS, M PLST V STIFF, BRN GRY, DRY-MST, CALCAREOUS 1140— 809 10 CL/ML