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GROUND ZERO ANALYSIS LOG OF WELL MW 1 • PROJECT NORTH STOCKTON AUTO LOCATION 8709 N DAVIS ST , STOCKTON, CA PROJECT NO 389 DATE DRILLED 06/20/01 LOGGED BY SEAN GARVEY REVIEWED BY GREG�AHL. RG NO, 5023 DRILLING COMPANY SPECTRUM EXPLORATION DRILLER TONY YOUNG METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER _ 8 1N DEPTH DRILLED 45 FT DEPTH TO WATER INITIAL 33 FT STATIC — 29 —FL CASING TYPE PVC DIAMETER - 2 1N_ SCHEDULE 40 INTERVAL 0 _ FT_ TO 24_ FT SCREEN TYPE PVC DIAMETER 2 IN SLOT SIZE 0 020 IN INTERVAL 24 FT TO 44 FT FILTER PACK TYPE #3 SAND INTERVAL 22 FT TO .- d4 FT- SURFACE SEAL TYPE NEAT CEMENT (5% BENTONITE) OVER BENTONITE INTERVAL 0 FT TO 72 FT COMMENTS PAGE I OF--Z— WELL DEPTH PID SAMPLE ID U S C DESCRIPTION DETAIL FT pPM) BLOWCOUNT LOG CONCRETE 2 4 6 —6 5/9 5' CLAYEY SAND 60-65% FN—MD P GROD SAND, 35-40% FNS, O DNS, BRN, NPO, DRY 6 ,g SC 25 8 100 6 5/9 5-14 5 WELL GRADED SAND 95-10057 FN—CRS, W GRDD SAND, 6 0-5% FNS MD DNS BRN NPO DRY SW 12 — 14 4 8 14 30 145-16/19 5 CLAYEY SAND 70-75% FN—MD W GRDD SD, 25-30% FNS 16 39 SC V DNS DK SRN, NPO, DRY 18 20 2 9 16/195-21/24 5' POORLY GRADED SAND 95-100% FN, PRLY GRDD SO, 9 5P 0-57, FNS MD DNS, BRN, NPO, DRY 11 22 24 ML 1 5 16 21/24 5-26/29 5 SILT 0-5% FN SD, 95-100% FNS, N DRY STRGTH R DLTNCY 26 16 L TGHNSS, N PLST V STIFF BRN NPO, DRY r _ 28 NSA MW1 3 30 1 4 5 26/29 5-31/34 5 SILTY CLAY 0-5% FN SD, 95-100% FNS M DRY STRGTH 6 N—SLW DLTNCY, M TGHNSS, M PLST, BREI, NPO, MST B CL/ML —32- 34 31/345-36/395- SILTY SAND 70% FN PRLY GRDD S0, 30% FNS, DNS, BRN 1 6• NPO, WET 23 SM 36 7 36/39 5-44 5' WELL GRADED SAND? HEAVING SANDS, NO RECOVERY 1N TUBES 38ID FROM RESIDUE ON TUBES NO RECOVER _ SW17 140 7