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AITCASSOCIATES INC <br /> 1260 Graots prate,Modesto,Cddorrg 95351 LOG OF BORING S B 4 <br /> PROJECT DIESEL PERFORMANCE LOCATION 2804 E FREMONT STREET, STOCKTON CA PROJECT NO 62577 0001 <br /> • DATE DRILLED 07/23/97 LOGGED BY TOM LUTTERMAN REVIEWED BY JEANNE HOMSEY C47410 <br /> DRILLING COMPANY FISCH ENVIRONMENTAL DRILLER DAVID FISCH METHOD DIRECT PUSH <br /> BORE HOLE DIAMETER 1 5 IN DEPTH DRILLED 31 FT DEPTH TO WATER INITIAL — FT STATIC FT <br /> CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL — FT TO FT <br /> SCREEN TYPE NA DIAMETER IN SLOT SIZE IN— INTERVAL _--.FT TO FT <br /> FILTER PACK TYPE NA INTERVAL _ FT TO FT <br /> SURFACE SEAL TYPE NEAT CEMENT INTERVAL FT TO FT <br /> COMMENTS <br /> PAGE I OF--L-- <br /> WELL DEPTH PID SAMPLE ID LITHOLOGIC DESCRIPTION <br /> DETAIL FT PPM BLOWCOUNT LOG <br /> 0-2" ASPHALT <br /> 2 <br /> 2 -60/90 LEAN CLAY (CL) <10% FINE POORLY GRADED SAND, >90% FINES NO <br /> DILATANCY LOW TO MODERATE TOUGHNESS DARK YELLOW BROWN NO <br /> 4 PRODUCT ODOR MOIST <br /> CL <br /> 0 <br /> 6 <br /> — 8 - <br /> -10— 0 <br /> 6 0/90-308 POORLY GRADED SAND (SP) >90% FINE TO MEDIUM POORLY GRADED <br /> 12 SAND <10% FINES MODERATE YELLOW BROWN NO PRODUCT ODOR <br /> WEAK CEMENTATION <br /> • 14 <br /> 0 DP-SBI-15 D <br /> 16 <br /> 18 <br /> SP <br /> 20 0 <br /> 22 <br /> 24- <br /> 3-6 INCH WIDE IRON OXIDE STAINS OBSERVED <br /> 0 <br /> 26- <br /> 28 <br /> DP—SB4-29 0' <br /> 30 0 <br /> 30 8-31 0 LEAN CLAY (CL) <5% FINE SAND, >95% FINES VERY STIFF <br /> MODERATE YELLOW BROWN, NO PRODUCT ODOR <br /> -32- <br /> -34 <br /> . 36- <br /> 38 <br /> L—L40 <br />