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LOG OF BORING S139 PROJECT STOCKTON/SMITH CANAL LOCATION 2144 FONTANA, STOCKTON CA PROJECT NO. W0385.02 DATE DRILLED 08/04/93 LOGGED BY TOM J LUTTERMAN REVIEWED BY A No 3 DRILLING COMPANY SPECTRUM EXPLORATION DRILLER VAN LEONARD METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 IN DEPTH DRILLED 20 FT DEPTH TO WATER : INITIAL 16.5 FT STATIC — FT CASING TYPE — DIAMETER IN SCHEDULE INTERVAL — FT TO — FT Ic; SCREEN TYPE DIAMETER IN SLOT SIZE IN INTERVAL FT TO — FT FILTER PACK TYPE — INTERVAL — T TO — FT NEAT CEMENT OVER 5 FEET OF BENTONITE [ SURFACE SEAL TYPE INTERVAL 0 FT TO _ 21.5 F7 F= COMMENTS: PAGE 1 OF 1 WELL DEPTH PID SAMPLE ID U.S.C. DETAIL FT. PPM 8LOWCOUNT LOG DESCRIPTION 0--4' POORLY GRADED GRAVEL; <5% SND; >95% FN, PRLY GRDD GRVL; fJ' DIRK YLLW BRN; NPO; ORGANICS; DRY; N HCL REACTION; WEAK F` 2 SP CEMENTATION; HOMO 4 4-10.5' LEAN CLAY; 107 FN—M, SA—SR, PRLY GRDD SND; 90% FNS; H DRY STRNGTH; N DLTNCY; M TGHNSS; M PLST; STIFF; DIRK YLLW 8RN; 4 NPO; ORGANICS; DRY—MST; N HCL REACTION; WEAK CEMENTATION; 6 0.0 4 HOMO 4 8 CL `.f '110 SSL-589-10.5' 0,5-11• LEAN CLAY WITH SAND; 15% FN, PRLY GRDD SND; 85% FNS; M 3 DRY STRNGTH; N—SLW DLTNCY; M TGHNSS; L—M PLST; STIFF; 0.0 5 CL DUSKY YLLW BRN; NPO; HOMO 7 "I 12 E: SM/ 11-11.5/15' SILTY SAND; 50% FN, PRLY GRDD SND; M DNS; 50% FNS; OLIVE :1 CRY; NPO; DRY—MST; HOMO 14 / SSL—S89-15' —16— 0.0 3 4 a18 SM 11.5/15-21,5' SILTY SAND; 70% FN, PRLY GRDD SND; LS; 30% FNS; OLIVE =_ GRY; M PO; MST; N HCL REAC70N; WEAK CEMENTATION; HOMO 20 2 55 2 4 22 —24— FFs Q� 26 U�O G' �l JVl� �lP 28 L�+ , GR CRY P. 11 ` 30 filo. 5023 �1 � 1 32 � r OF CAO1 }} -34- 36 3436 40 F.