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GROUND ZERO ANALYSIS LOG OF BORING SBIA <br /> PROJECT N. STOCKTON AUTO LOCATION 8709 N. DAVIS ROAD. STOCKTON CA PROJECT NO. 388 <br /> DATE DRILLED 01/12/01 LOGGED BY SEAN GARVEY REVIEWED BY GREG P. STAHL RG No. 5023 <br /> DRILLING COMPANY SPECTRUM EXPLORATION DRILLER DAVE GONZALES METHOD HOLLOW STEM AUGER <br /> BORE HOLE DIAMETER 6 1N DEPTH DRILLED __ 36 FT DEPTH TO WATER : INITIAL 32.5 FT STATIC 32.5 FT <br /> CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT- TO -__Fj <br /> SCREEN TYPE NA DIAMETER IN SLOT SIZE IN INTERVAL FT TO FT <br /> FILTER PACK TYPE INTERVAL FT TO FT <br /> SURFACE SEAL TYPE NEAT CEMENT GROUT_ INTERVAL 0 FT TO 36 FT <br /> COMMENTS: PAGE I_OF--!— <br /> WELL <br /> F 1WELL DEPTH FID SAMPLE ID U.S.C. DESCRIPTION <br /> DETAIL FT. PPM BLOWCOUNT LOG <br /> 2 <br /> 0-20' GRAVEL FILL (NOT SAMPLED) <br /> 4 <br /> 6 <br /> 8 �`� Off, <br /> 10 4 GREGORY P. <br /> STALL <br /> No. 5023 <br /> 12 <br /> FI LL <br /> —14- <br /> 16 a 16 - —1 <br /> 18 <br /> 20 <br /> 20-26.5/30' CLAYEY SAND (SC); 70% FN, PRLY GRDD SND; 30% FNS, <br /> 22 DNS, BRN, NPO, MST, STRNG CEMENTATION <br /> 24 SC <br /> NSA-SB1A-25' <br /> 9 <br /> 26 18 <br /> 22 <br /> 28 26.5/30-31.5/35' SILTY CLAY (CL/ML): 10% FN, A SND; 90% FNS, M-H DRY <br /> STRNGTH, SLW DLTNCY, M TGHNSS, M PLST, HRD, BRN, <br /> NPO, MST, CALCAREOUS <br /> 30 NSA-SBS A-30' <br /> 7 <br /> I6 CL/ML <br /> 20 <br /> 32 <br /> 31.5/35-36' NO RECOVERY (SAND?) <br /> 34 <br /> a NO <br /> • B RECOVERY <br /> 36 <br /> NSA-SB1A-35-40GW <br /> 38- <br /> 40 <br />