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' ArC ASSOCIATES INC LOG OF BORING SBS 1260 Craphcs Erne,Modesto,Cau(amla 95351 PROJECT VAN DYKEN PROPERTY LOCATION 215 WEST MAIN STREET, RIPON, CALIFORNIA PROJECT NO 14981 0401 ' DATE DRILLED 11/14/97 LOGGED BY TOM LUTTERMAN REVIEWED BY JEANNE HOMSEY 047410 DRILLING COMPANY FISCH ENVIRONMENTAL DRILLER DAVID FISCH METHOD DIRECT PUSH TECHNOLOGY • BORE HOLE DIAMETER 1 5 IN DEPTH DRILLED 29 FT DEPTH TO WATER INITIAL ^30 FT STATIC FT CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT TO FT SCREEN TYPE NA DIAMETER - 1N_ SLOT SIZE IN INTERVAL FT TO FT FILTER PACK TYPE NA INTERVAL FT TO FT SURFACE SEAL TYPE NEAT CEMENT VIA TRCMIE METHOD INTERVAL 0 >=T TO 35 FT COMMENTS ADVANCED AND EXPOSED SCREEN FROM 31-35 FEET TO COLLECT WATER SAMPLE PAGE 1 OF WELL DEPTH PID SAMPLE ID LITHOLOGIC DESCRIPTION DETAIL FT PPM) BLOWCOUNT LOG 0-11/14' POORLY GRADED SAND WITH SILT (SP-SM) 90% FINE-MEDIUM SUBANGULAR-SUBROUNDED, POORLY GRADED SAND, 10% FINES, 2 DARK YELLOW BROWN, NO PRODUCT ODOR, DRY WEAK CEMENTATION, HOMOGENOUS 4 12 6 SP-SM ' MODERATE YELLOW BROWN TO DARK YELLOW BROWN NOTED BETWEEN 9 0 - I I 0 FEET 10 1 2 12 14 11/14-16/19 POORLY GRADED SAND (SP) >957 FINE-MEDIUM, SUBANGULAR- 1 2 SP SURROUNDED POORLY GRADED SAND, <5% FINES, PALE YELLOW BROWN NO PRODUCT ODOR MOIST WEAK CEMENTATION HOMOGENOUS 16 ' 18 Ns—sea—za a —20- 1 2 ML 16/19-21/24' SILT WITH SAND (ML) <15% FINE POOLRY GRADED SAND >85% FINES, NO-LOW DRY STRENGTH, SLOW-RAPID DILATANCY LOW TOUGHNESS NO-LOW PLASTICITY PALE YELLOW BROWN, NO PRODUCT ODOR MOIST WEAK CEMENTATION HOMO 22 \ ' 24 NS-SBI-250 \ 95 ML 21/24-26/29' SILT (ML) <10% FINE POORLY GRADED SAND >90% FINES NO-LOW ' 26 DRY STRENGTH SLOW-RAPID DILATANCY LOW TOUGHNESS NO-LDW PLASTICITY OLIVE GRAY MODERATE PRODUCT ODOR MOIST WEAK CEMENTATION, HOMOGENOUS 28 N5-SB1-30 0 Sc 30 234 26/29-31' CLAYEY SAND (SC) 80% FINE-MEDIUM POORLY GRADED SAND 20% FINES OLIVE GRAY, MOIST-WET WEAK CEMENTATION HOMOGENOUS 32 ' 34 • 3s ' 38 40