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ASSOCIATES INC 1260 GrIOU kif+ Modesto,W11amm, 95351 LOG OF BORING S B 1 PROJECT CONTINENTAL GRAIN _ LOCATION 1805_ HARBOR STREET, STOCKTON CA PROJECT NO 62500 0001 DATE DRILLED 10/07/97 —_ LOGGED BY TOM LUTTERMAN REVIEWED BY JEANNE HOMSEY C47410 . DRILLING COMPANY FISCH ENVIRONMENTAL DRILLER DAVE FISCH METHOD DIRECT PUSH BORE HOLE DIAMETER 1 5 IN DEPTH DRILLED 31 FT DEPTH TO WATER INITIAL 20 FT STATIC FT CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL _. FT TO SCREEN TYPE NA DIAMETER IN SLOT SIZE IN INTERVAL —T TO FILTER PACK TYPE NA INTERVAL FT- TO — - FT SURFACE SEAL TYPE CEMENT SLURRY OVER f5% BENTONITE INTERVAL FT TO ' COMMENTS PAGE 1_OF__L_ WELL DEPTH PID SAMPLE ID LITHOLOGIC DESCRIPTION DETAIL FT PPM BLOWCOUNT LOG ' 0-14' FILL 2 ' 4 FILL 8 --10- 12 14 14-16/19' SILT (ML) <5% FINE POORLY GRADED SAND >95% FINES LOW SO O 25 CG-SB1-15 TOUGHNESS NO PLASTICITY DARK GREENISH TO GRAY MODERATE ML PRODUCT ODOR DRY TO MOIST, WEAK CEMENTATION HOMOGENOUS 16 18 16/19-2124' POORLY GRADED SAND WITH SILT (SP-SM) >90% FINE, POORLY CG-SBI-W GRADED SAND <10% FINES DARK GREENISH TO GRAY STRONG dg00 20 q3CG-SB1-20' SP—SM PRODUCT ODOR WET, WEAK CEMENTATION, HOMOGENOUS 22- 21/24-25 5' ELASTIC SILT WITH SAND (MH) -25% FINE, POORLY GRADED SAND -•75% FINES, SLOW DILATANCY LOW TOUGHNESS, LOW TO MEDIUM 24 MH PLASTICITY, DARK GREENISH TO GRAY, MODERATE PRODUCT ODOR WET WEAK CEMENTATION HOMOGENOUS 1 4 CG-S81-25 ' 25 5-26/29' POORLY GRADED GRAVEL WITH SAND (GP) >15% FINE TO COURSE 26 Gp SUBANGULAR TO SUBROUND POORLY GRADED SAND 580% FINE SUBANGULAR TO SURROUND POORLY GRADED GRAVEL <5% FINES DARK GREENISH TO GRAY NO PRODUCT ODOR WET WEAK 28 CEMENTATION, HOMOGENOUS ' 26/29-31 POORLY GRADED SAND (SP) >95% FINE POORLY GRADED SAND Sp <5% FINES DARK GREENISH TO GRAY NO PRODUCT ODOR WET 'Lo 30 CC-S81-30 1 q WEAK CEMENTATION HOMOGENOUS ' 32 34 _36- 38 ' 40