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GROUND ZERO ANALYSIS LOG OF WELL MW2 <br /> PROJECT GREGERSON LOCATION 1717 S CENTER STREET STOCKTON CA PROJECT NO 281 <br /> DATE DRILLED _07/15/99 LOGGED BY SEAN GARVEY REVIEWED BY GREG P STAHL RG No 5023 <br /> DRILLING COMPANY SPECTRUM EXPLORATION DRILLER RICK METHOD HOLLOW STEM AUGER <br /> BORE HOLE DIAMETER 8 IN DEPTH DRILLED -4O FT DEPTH TO WATER INITIAL 30 FT STATIC 23` FT <br /> CASING TYPE PVC F480 DIAMETER 2 1N SCHEDULE 40 INTERVAL 0 _ FT TO 15 FT <br /> SCREEN TYPE PVC F480 DIAMETER 2 IN SLOT SIZE 0 02 IN INTERVAL 15 FT TO 40 FT <br /> FILTER PACK TYPE N3 SAND INTERVAL 13 FT TO 40 FT <br /> SURFACE SEAL TYPE NEAT CEMENT GROUT OVER BENTONITE INTERVAL a FT TO 13 FT <br /> COMMENTS PAGE?OF--L- <br /> WELL <br /> F?WELL DEPTH FID SAMPLE 10 U S C DESCRIPTION <br /> DETAIL FT PPM BLOWCOUNT LOG <br /> O-4' CONCRETE <br /> 2 <br /> 4--6/95- BASE ROCK FILL <br /> FILL <br /> 4 <br /> fi 0 <br /> 8 <br /> 10 3,000 zO <br /> 28 <br /> 33 <br /> —12- <br /> 6/9 5-31/34 5 SILTY CLAY (CL/ML) 5-10% FN-M, A TO SA, W <br /> GRDD SND, 90-95% FNS M-H DRY STRNGTH SLW DLTNCY <br /> 14 M TGHNSS, M-H PLST, HRD TO V STIFF, BRN TO BRN <br /> W/GRY MOTTLING, STRNG PO TO MPO MST TO WET <br /> >10,000 16 <br /> 21 <br /> 16 22 <br /> — 18 <br /> _ MW2-20' <br /> 20 12 <br /> >10,000 18 CL/ML <br /> 23 <br /> 22 <br /> 24 <br /> -_ 10 <br /> B00 15 <br /> 26 20 <br /> 28 <br /> 30 6 <br /> 6,000 13 <br /> 18 <br /> 32 <br /> 31/34 5-346' POORLY GRADED SAND (SP) 100% FN A-SA PRLY GRDD <br /> SND, M DNS, BRN <br /> 34 SP <br /> — 9 <br /> 10,000 15 <br /> 36 23 34 6-41SILT (ML) 10-155 FN A-SA, PRLY GRDD SND <br /> TAC GRVL, 85-905 FNS, M DRY STRGNTH, SLW DLTNCY, <br /> M TO M-H TGHNSS L-M TO M PLST, HRD, GRY, <br /> M-STRNG PO, MST <br /> 38 ML <br /> 5 000 a <br /> 40 <br />