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GROUND ZERO ANALYSIS LOG OF BORING S84 iPROJECT _JILEBURG WAREHOUSE LOCATION 8200 NORTH HIGHWAY 99, STOCKTON CA PROJECT NO 263 ?DATE DRILLED 10/7/99 _ LOGGED BY JOHN LANE SEAN GARVEY REVIEWED BY JOHN LANE RG No 6795 DRILLING COMPANY SPECTRUM DRILLER BOBBY NIXON METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER B -- IN DEPTH DRILLED 61 FT DEPTH TO WATER INITIAL 61 FT STATIC 61 FT CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT TO FT SCREEN TYPE NA DIAMETER IN SLOT SIZE IN INTERVAL FT TO ET FILTER PACK TYPE NA INTERVAL FT TO FT SURFACE SEAL TYPE NEAT CEMENT GROUT INTERVAL 0 FT TO 61FT COMMENTS PAGE--I—OF 2 WELL DEPTH FID SAMPLE ID U S C DESCRIPTION DETAIL FT PPM BLOWCOUNT LOG 2 CL 0-65/10 DLTNCY,�M TGHNSS, LX PLST. M STAFF-STI F, DRY STRNGTH. SLW D K BRN NPO, ORGANICS, DRY, WEAK CEMENTATION, MOTTLED 4 3 6 4 0 8 i 1a 3 3 0 5 —12- -14- 65/10-31- 21465/10-31' CLAYEY SILT (ML/CL) <10% FN SND, >90% FNS, L DRY STRNGTH. SLW DLTNCY, L-M TGHNSS. L PLST, M STIFF-HRD (INCREASING COMPACTION WITH DEPTH), LT BRN, NPO, ORGANICS, DRY, WEAK 18 CEMENTATION, MOTTLED 20 7 ML/CL 0 12 14 22 24 TW-584-2CALCAREOUS CONCRETIONS AT APPROXIMATELY 27 FEET 5 ' 9 26 p 22 28 3a 0 14 31-31 5/35' SILTY SAND (SM) 55% FN, SA-SR. PRLY GRDD SND, 45X FNS, I s�u N DRY STRNGTH, SLW-R DLTNCY, L TGHNSS, N-L PLST. DNS, 32 SM M BRN, NPO, ORGANICS, DRY, M CEMENTATION 31 5/35-35 5' SILT (ML) <10% FN SND. >90% FNS, L DRY STRNGTH, SLW DLTNCY, L TGHNSS, N PLST. V STIFF, LT BRN, NPO, TRC 34 ORGANICS, DRY, STRNG CEMENTATION, CALCAREOUS ML 16 36 0 20 21 35 5-40 5' SILTY SAND (SM) 55% FN-M. SR, PRLY GRDD SND, 45X FNS, N DRY STRNGTH, R DLTNCY. L TGHNSS, N PLST, DNS. LT BRN TO 38 BRN-GRY. NPO, ORGANICS. DRY. M TO M-STRNG CEMENTATION SM 40