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LOG OF WELL MW8 <br /> PROJECT CHASE CHEVROLET LOCATION 423 N_MADISON_STREET,_STOCKTON CA PROJECT NO 15D070 01 <br /> DATE DRILLED 05431/94 LOGGED BY LOls FRANTZ REVIEWED BY GREG P STAHL RG No 5023 <br /> DRILLING COMPANY SPECTRUM EXPLORATION DRILLER JON SUMP MOKE LAU METHOD HOLLOW STEM AUGER <br /> BORE MOLE DIAMETER 12 IN DEPTH DRILLED 42 FT DEPTH TO WATER INITIAL 27 FT STATIC 27 55 FT <br /> CASING TYPE PVC F480 DIAMETER 4 IN SCHEDULE 40 INTERVAL 0 FT TO _ 22 FT <br /> SCREEN TYPE PVC F480 DIAMETER 4 IN SLOT SIZE 0 020 IN INTERVAL 22 FT TO 42 FT <br /> FILTER PACK TYPE 2/12 SILICA SAND INTERVAL 20 FT TO 42 FT <br /> SURFACE SEAL TYPE NEAT CEMENT OVER BENTONITE INTERVAL 0 FT TO 20 FT <br /> ' COMMENTS 1 5 BENTONITE OVER FILTER PACK PAGE 1 OF-2— <br /> WELL <br /> F2WELL DEPTH FID SAMPLE ID U S C DESCRIPTION <br /> DETAIL FT PPM BLOWCOUNT LOG <br /> 0-4 ASPHALT <br /> ' - 2 4"-6/9 5 FAT CLAY <5% FN SA-SR PRLY GRDD SND, >957 FNS H-V H <br /> _ DRY STRNGTH N DLTNCY, M-H TGHNSS H PLST V STIFF <br /> CH BLK BRN NPO ORGANICS MST WEAK-STRNG HCL REACTION <br /> _ 4 WEAK CEMENTATION HOMO CaCO3 <br /> 12 <br /> 6 17 <br /> :Ls - 6/9 5-11/14 5 LEAN CLAY, <$% FN-M, SA-SR PRLY GRDD SND, >95% FNS <br /> g M-H DRY STRNGTH N-SLW DLTNCY L-M TGHNSS M--H PLST <br /> V STIFF M YLLW BRN NPD MST WEAK HCL REACTION <br /> WEAK CEMENTATION HOMO, CaCO3 <br /> TO 9 <br /> 11 CL <br /> 18 <br /> - 12 11/14 5-24 B CLAYEY SAND >70% FN-M SA-SR PRLY GRDD SND V DNS <br /> - - <30% FNS M YLLW BRN, NPO, DRY-MST WEAK-STRNG <br /> HCL REACTION WEAK-M CEMENTATION HOMO, Cocos <br /> Q-- ::2-; <br /> 14 <br /> 27 <br /> 50 FOR s <br /> 16 <br /> 18 I <br /> ' MW8-20 SC/SM <br /> 20 10 <br /> 28 <br /> ' 35 <br /> 22 <br /> ' 24 ►dW8-25 5' <br /> 3 0 9 24 8-28 5/34 5' POORLY GRADED SAND >957 FN-M SA-SR, PRLY GRDD SND <br /> I M DNS <5% FNS M-DRK YLLW BRN NPO MST-WET N HCL <br /> 25 11 REACTION WEAK CEMENTATION HOMO <br /> ' SP <br /> 3 0 i0 <br /> 28 13 <br /> 18 <br /> ' = 30 <br /> 28 5/34 5-36/39 5 WELL GRADED SAND WITH CLAY AND GRAVEL 607, FN-CRS <br /> SA-SR, M DNS W GROD SND 307 FN-CR5 GRVL 10% FNS, <br /> _ M-DRK YLLW BRN, NPO WET N HCL REACTION WEAK <br /> 32 CEMENTATION HOMO HEAVING SAND <br /> ' <br /> —34- <br /> 6 <br /> 5 sw-sc <br /> 36 7 <br /> 36/39 5-41' SANDY LEAN CLAY 30% FN-M SA-SR PRLY GRDD SND 707 <br /> FNS M DRY STRNGTH N-SLW DLTNCY L-M TGHNSS M-H PLST <br /> 38 STIFF M-GRY BRN NPO, MST WEAK-STRNG HCL REACTION, <br /> M CEMENTATION HOMO CaCO3 <br /> _ /CL <br /> 40 <br />