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_0A_ SI_®
<br /> WELL BORING LOG
<br /> PROJECT SAN JOAOUIN CATHOLIC GEM LOCATION HARDING WAY & CEMETARY LANE, STOCKTON CA PROJECT NO W0289
<br /> WELL/BORING NO MW2 SURFACE ELEVATION NS FT WELLHEAD ELEVATION _. 1769_ FT
<br /> DATE DRILLED 05/05/92 REVIEWED BY QREG P. STAHL RG tjo._ 5023 LOGGED BY LOIS FRANTZ
<br /> DRILLING COMPANY SPECTRUM EXPLORATION DRILLER VAN LEONARD/TONY BUCKMAN METHOD HOLLOW STEM AUGER
<br /> BORE HOLE DIAMETER 8 IN DEPTH DRILLED 76 FT DEPTH TO WATER INITIAL 68 FT STATIC 669 El
<br /> CASING TYPE PVC F480 DIAMETER 2 IN SCHEDULE 40 INTERVAL 0 FT TO 61 FL
<br /> ' SCREEN TYPE PVC F480 DIAMETER 2 IN SLOT SIZE Q-13 10 IN INTERVAL 61 FT TO 76 FT
<br /> FILTER PACK TYPE 2/12 SILICA SAND INTERVAL 59 FT TO 76 FT
<br /> SURFACE SEAL TYPE CEMENT SLURRY INTERVAL 0 FL TO 57 FT
<br /> NOTES 2' BENTONITE SEAQ, ABOVE FILTER PACK
<br /> WELL DEPTH PID SAMPLE ID U S G SOIL DESCRIPTION
<br /> DETAIL (FT) (PPM) BLOWCOUNT LOG
<br /> 0-6 5/10, SANDY SILT, 407 SA—SR FN, PRLY GRDD SND, 601 FNS, N—L
<br /> DRY STRNGTH, R DLTNCY L TGHNSS, N—L PLST HRD LT—M
<br /> YLLW BRN, NPO, DRY—MST N HCL REACTION WEAK
<br /> ' 2 CEMENTATION, HOMO
<br /> ML
<br /> 4
<br /> 18
<br /> t4
<br /> 2 6 5/10-11 5/15' SANDY SILT, 307 SA—SR FN PRLY GRDD SND 707 FNS N—L
<br /> 21 DRY STRNGTH, R DLTNCY L TGHNSS N—L PLST V STIFF
<br /> M YLLW BRN, NPO, DRY—MST, N—WEAK HCL REACTION,
<br /> 8 / WEAK CEMENTATION, HOMO
<br /> 10 0
<br /> 18 ML 11 5/15-21 5/25' SILT 10% SA—SR, V FN, PRLY GRDD SND 90% FNS, L DRY
<br /> 25 STRNGTH R DLTNCY, L TGHNSS, N PLST V STIFF M-
<br /> 12 DRK YLLW BRN, NPO, DRY—MST, WEAK HCL REACTION,
<br /> / WEAK—M CEMENTATION HOMO
<br /> 14
<br /> D 10
<br /> ZR 16 z2
<br /> ' 1 ML
<br /> 1 20 0 21 5/25-25 8' WELL GRADED SAND WITH SILT, 907 SA—SR, V FN—FN, W
<br /> 12 GRDD SND, 107 FNS, M DNS, LT YLLW BRN, NPO DRY—MST
<br /> 2 2 17 WEAK HCL REACTION WEAK—M CEMENTATION, HOMO
<br /> CALCUIM CARBONATE POCKETS
<br /> ' 24
<br /> 86 8 SW—SM 25 8-26 5/30' LEAN CLAY, 10% SA—SR, FN, PRLY GRDD SND 947 FNS M—H
<br /> 26 1 DRY STRNGTH, SLW DLTNCY L—M TGHNSS, L PLST, V STIFF,
<br /> 15 CL DRK YLLW BRN NPO DRY—MST WEAK HCL REACTION
<br /> WEAK—M CEMENTATION HOMO
<br /> ' 2$
<br /> 30 79 1
<br /> 14
<br /> 20
<br /> 32 ML
<br /> 34 26 5/30-36 5/40' SILT 10% SA—SR, V FN PRLY GRDD SND, 907. FNS, L
<br /> DRY STRNGTH, R DLTNCY, L TGHNSS, N—L PLST, V STIFF,
<br /> tl
<br /> DIRK YLLW BRN NPO DRY—MST, WEAK—STRNG HCL REACTION,
<br /> 36 6 g 1 WEAK CEMENTATION, HOMO, CALCUIM CARBONATE MOTTLING
<br /> 33
<br /> 365/40-41 LEAN CLAY 107 SA—SR, V FN, PRLY GRDD SNO 90% FNS
<br /> 38 M—H DRY STRNGTH N DLTNCY, M TGHNSS, M—H PLST HRD
<br /> M YLLW BRN, NPO DRY--MST, WEAK HCL REACTION, WEAK
<br /> CEMENTATION HOMO
<br /> 40 3 3 1 CL
<br /> 50 41-41 5/45' SILT, 107 SA—SR, V FN, PRLY GRDD SND, 907 FNS, L DRY
<br /> _ FOR fi� ML STRNGTH R DLTNCY L TGHNSS N—L PLST HRD M YLLW
<br /> 4 2 BRN NPD DRY—MST STRNG HCL REACTION WEAK CEMENT—
<br /> ATION, HOMO, CALCIUM CARBONATE MOTTLING
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