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1 LOG OF BORING SB5 ' PROJECT -CEASE_LHEVROLET— LOCATION 424 N VAN BURENYSTREET STOCKTON CA PROJECT NO 150070 DI DATE DRILLED LOGGED 9Y LOIS FRANT7 REVIEWED BY GREG P STAHL RG No 5023 DRILLING COMPANY SPECTRUM EXPLORATION DRILLER _JON SUMP/MOKE LAV - METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 IN DEPTH DRILLED 24 5_FT DEPTH TO WATER INITIAL -26 FT STATIC FT CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT TO FT SCREEN TYPE HA DIAMETER __ IN SLOT SIZE IN INTERVAL - FT TO _ _ FT FILTER PACK TYPE NA INTERVAL FT TO FT SURFACE SEAL TYPE NEAT CEMENT INTERVAL 0 FT TO 245 FT COMMENTS -HypgopuNcH DBIVEN SCLOW 26 FOR WAIER SAMPLEPAGE t OF i WELL DEPTH FID SAMPLE ID U S C DESCMPTION DETAIL FT PPM SLOWCOUNT LOG ' 0-4 5/8 FAT CLAY <5% FN, SA-SR PRLY GRDD SND, >95% FNS H- V H DRY STRNGTH N DLTNCY M-H TGHNSS H PLST V STIFF- 2 HRD BLK BRN NPO ORGANICS MST WEAK-STRNG HCL REACTION, WEAK CEMENTATION HOMO 9 CH ' 4 3 8 15 28 4 5/8-14 5/18 LEAN CLAY <5% FN, SA-SR PRLY GRDD SND >95% FNS M-H 6 DRY STRNGTH N DLTNCY, M-H TGHNSS M PLST V STIFF-HRD ' M YLLW BRN, NPO, DRY, WEAK HCL REACTION M-STRNG CEMENTATION, HOMO a 7 3 6' 18 34 10 CL 12 SB5-13 5 14 45 38 50 FOR 5 14/18-19 5/23 POORLY GRADED SAND WITH SILT AND CLAY 90% FN-M, SA-SR PRLY GROD SND M DNS 10% FNS, M YLLW BRN NPO MST, 16 WEAK NCL REACTION WEAK CEMENTATION HOMO 18 S65-18 5' 4 SP-SM/ 37 ,9 SC 20 19 5/23-245 POORLY GRADED SAND 95% FN-M, SA-SR PRLY GRDD SND M DNS <S7 FNS BRN BLK NPO MST WEAK HCL REACTION 22 / WEAK CEMENTATION HOMO 565-23 5 9 24 60 11 5P 15 26 26' Zoe ` 28 A�� Uri r o GREGORY R 30 STAB 'L 4 No 5023 � —32- 34- 36— ` 38 _ 4D