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r� <br /> GROUND ZERO ANALYSIS LOG OF BORING DB-2 <br /> PROJECT KNOWLES HAMMER LOCATION 1140 WEST HAMMER LANE, STOCKTON CA PROJECT NO 95-013 <br /> . DATE DRILLED 07/15/98 LOGGED BY JEANNE BUCKTHAL REVIEWED BY JOHN P LANE REG No 6795 <br /> DRILLING COMPANY WOODWARD DRILLING CO m=m DRILLER AMADOR ARROYO METHOD HOLLOW STEM <br /> BORE HOLE DIAMETER 8 IN DEPTH DRILLED 71 FT DEPTH TO WATER INITIAL 39 5 FT STATIC _ FT <br /> CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT TO FT <br /> SCREEN TYPE NA DIAMETER IN SLOT SIZE lN_ INTERVAL FT TO - FT <br /> FILTER PACK TYPE NA INTERVAL FT_ TO FT <br /> SURFACE SEAL TYPE NEAT CEMENT INTERVAL 0 FT TO 71 FT <br /> COMMENTS PAGE I OF-2- <br /> WELL DEPTH FID SAMPLE ID U S C DESCRIPTION <br /> DETAIL FT PPM BLOWCOUNT LOG <br /> 2 0-11/20 SAN<5%DY LEAN FN GRVL L60-70% FNS, MaH DRYCRS W RDD SND <br /> STRNGT}'I <br /> SLW-R DLTNCY L-M TGHNSS L-M PLST V STIFF <br /> DRK URN NPO DRY--MST <br /> 4 (NATIVE BACKFILL) <br /> 6 <br /> CL <br /> (Nallva Fill) <br /> 8 <br /> 10 4 <br /> 0 6 <br /> 13 <br /> —12- <br /> 14- <br /> 11/20-21 <br /> 21411/20-21 5/30 POORLY GRADED SAND (SP) >95% FN-M PRLY GRDD 5N0 <br /> <5% FNS DNS LT URN, NPO DRY <br /> i6 (NATIVE BACKFILL) <br /> 1$ <br /> —20— loo <br /> 0 3 SP <br /> (Nolle. Fill) <br /> —22- <br /> 24- <br /> 21 <br /> 22421 5/30-31 5/35 SILT (ML) <5% FN SND >95% FNS L DRY STRNGTH SLW <br /> DLTNCY L TGHNSS N-L PLST HRD URN NPO DRY MOTTLED <br /> (NATIVE BACKFILL) <br /> 26 <br /> 28- <br /> 30 0 <br /> 12 ML <br /> 20 (NatIve RLI) <br /> 30 <br /> 32 <br /> 31 5/35-36 5/40 LEAN CLAY (CL) <57 FN SND >95% FNS M DRY STRNGTH <br /> N DLTNCY L-M TGHNSS L PLST, V STIFF LT GRY NPO <br /> 34 DRY <br /> D82-35 5 <br /> /7 <br /> 0 12 CL <br /> 3b 12 <br /> 36 5/40-46 5/50 ELASTIC SILT (MH) 5-15% FN-CRS W GROG SND <5% FN <br /> 3$ GRVL 85-95% FNS L-M DRY STRNGTH SLW DLTNCY <br /> L TGHNSS L-M PLST STIFF TO V STIFF LT URN TO ORNG URN <br /> /MH N-M PO MST-WET SOME MOTTLING SL PO BEGINNING --45 <br /> 40 <br />