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GROUND ZERO ANALYSI* LOOF BORING/WELL _5 -9ZN W5 • 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' 8 DEPTH DRILLED 50/38 DEPTH TO WATER : INITIAL 29 FT STATIC 9s FT CASING TYPE PVC DIAMETER 2 IN SCHEDULE 40 INTERVAL 0 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 38 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- 'WELL F2WELL 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 y _ s4 CL 6 0.1 e 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 CLAYGCH/MLI; <5% FN, A SND; >95% FNS; M-H DRY STR; SLW DLTNCY; M GH ES ; M PLAST; BRN, NO ODOR, DRY. 18 0.1 20 CL/ML - 22 0.1 24 ---- _GABS99-25-GW 2s 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 g2 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 SANDML); 15-20% SND• 80-85% FNS; N DRY STRGTH; R DLTNCY; 40 0.2 ML L TGHNESS; L P S_( ; BRN, NO ODOI1, WET.