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ff�� • LOG OF BORING S85 �' PROJECT CHASF CHFVROIFT LOCATION 424 N. VAN BUREN STREET. STOCKTON CA PROJECT NO. 150070.01 DATE DRILLED 6/1/94 LOGGED BY IOIs FRANTz REVIEWED BY GREG P. STAHL RG No. 5023 DRILLING COMPANY SPECTRUM EXPLORATION DRILLER JON SUMP/MOKE LAU METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER B 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 NA 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 24.5 FT COMMENTS: HYDROPUNCH DRIVrN RELOW WATER SAMPLEPAGE 1 OF 1 WELL DEPTH FIG SAMPLE ID U.S.C. DESCRIPTION DETAIL FT. PPM BLOWCOUNT LOG 0-4.5/8' FAT CLAY; <5% FN, SA—SR, PRLY GROG SND; >95% FNS; H— V H DRY STRNGTH; N DLTNCY; M—H TGHNSS; H PLST; V STIFF- 2 HRD; ELK BRN; NPO; ORGANICS; MST; WEAK—STRNG HCL REACTION; WEAK CEMENTATION; HOMO 9 CH q 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 BEN; NPO; DRY; WEAK HCL REACTION; M—STRNG CEMENTATION; HOMO 8 7 3.6 18 34 —10— CL 2 SB5-13.5' 4'S 38, 14 50 FOR 5" 14/18-19.5/23' POORLY GRADED SAND WITH SILT AND CLAY; 90% FN—M, SA—SR, PRLY GRDD SND; M DNS; 109 FNS; M YLLW BRN; NPO; MST; 16 WEAK HCL REACTION; WEAK CEMENTATION; HOMO 18 S85-1 8.5' 4 SP—SM/ 3.7 9 SC 11 20 / 19.5/23-24.5' POORLY GRADED SAND; 95% FN—M, SA—SR, PRLY GRDO SND; / M DNS; <5% FNS; BEN BLK; NPO; MST; WEAK HCL REACTION; / WEAK CEMENTATION; HOMO —22— SBS-23.5' 9 24 6.0 1 SP 15 26' 30 GREGORY P. "1 l7 r �i'' Na. _3 S —32- -34- -36- 38 2 3638 40