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GROUND ZERO ANALYSO L*OF BORING/WELL _SB9/kM9 PROJECT GABBARD LOCATION 640 N. ELDORADO PROJECT NO. 256 DATE DRILLED MAY 22, 2003 LOGGED BY S. GARVEY REVIEWED BY DRILLING COMPANY FISCH ENVIRONMENTAL DRILLER DAVE FISCH METHOD DIRECT PUSH/ HOLLOW STEM AUGER BORE HOLE DIAMETER 2!'/B" IN DEPTH DRILLED 50/38 FT DEPTH TO WATER : INITIAL 29 FT STATIC 25 FT CASING TYPE PVC DIAMETER 2 IN SCHEDULE 40 INTERVAL O FT TO 18 FT SCREEN TYPE PVC DIAMETER 2 IN SLOT SIZE .010 IN INTERVAL 18 FT TO 38 FT FILTER PACK TYPE #3 SAND INTERVAL 16 FT TO 3B FT SURFACE SEAL TYPE NEAT CEMENT GROUT OVERLAYING BENTONITE INTERVAL 0 FT TO 16 FT COMMENTS:CONTINUOUS CORE TO 50 FT BGS. BORING GROUTED TO BOTTOM OF WELL PRIOR TO WELL INSTALLATION PAGE 1 OF 2 ELL I DEPTH PID SAMPLE ID U.S.C. DESCRIPTION DETAIL FT. PPM BLOWCOUNT LOG 0-8' LEAN CLAY (CL); <5% FN, A SND; >95% FNS; M-H DRY STR; N-SLW DLTNCY; M-H TGHNESS; M-H PLAST; DK BRN. NO ODOR, DRY. 2 0.1 4 CL x y 6 0.1 y 8 8'-12' SILTY CLAY (CL/ML); <5% FN, A SND; >95% FNS; M DRY STR; SLW DLTNCY; M TGHNESS; M PLAST; BRN, NO ODOR, DRY. 10 0.1 CL/ML 12 12'-16' LEAN CLAY (CL); <5% FN, A SND; >95% FNS; N DRY STR; N-SLW DLTNCY; M-H TGHNESS; M-H PLAST; BRN, NO ODOR, DRY. 14 0.1 CL 16 16'-24' SILTY CLAY (CLL MLI; <5% FN, A SND; >95% FNS; M-H DRY STR; SLW DLTNCY; M G ES , M PLAST; BRN, NO ODOR, DRY. 18 0.1 20 CL/ML - 22 0.1 24 ---- Z _GABSB9-25-GW 26 0.3 24'-29' SILT (ML); <5% FN, A, SND; >95% FNS; N DRY STR; R DLTNCY; L ML = TGHNESS; N PLAST; BRN, NO ODOR, MST. GAS89-27 = 28 Q SW = 29'-30' WELL GRADED SAND (SW); >95% FN-CRS, A-SR, W GRDD SND; <5% 30 0.4 FNS; BRN, NO ODOR, WET. 0.4 = 30'-39' SILT (ML); <5% FN, A SND; >95% FNS; N DRY STR; R DLTNCY; L 32 t TGHNESS; L PLAST; BRN, NO ODOR WET. INTERMITTENT HIGHER PERMEABILITY STRINGERS WITH UP TO 15% SAND 34 0.5 ML 36- 38- 0.5 39'-40' SILT WITH SAND (ML); 15-20% SND' 80-85% FNS; N DRY STRGTH; R DLTNCY; n40- 0.2 ML L TGHNESS; L PSM S ; BRN, NO ODOh, WET.