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GROUND ZERO ANALYSIS <br />LOG OF BORING SB5 <br />PROJECT PALOMINO — RIVERBANK LOCATION <br />23023 SANTA FE RD. <br />RIVERBANK, CA <br />PROJECT NO. 618 <br />DATE DRILLED 7/28/04 LOGGED BY <br />JOE VASQUEZ <br />REVIEWED <br />BY _JOHN LANE. RG 6795 <br />DRILLING COMPANY FISCH DRILLER <br />RICK BERTOLINO <br />METHOD <br />DIRECT PUSH <br />BORE HOLE DIAMETER 1 1/4 IN DEPTH DRILLED <br />31.5 FT DEPTH TO WATER : INITIAL <br />28 FT STATIC 25.9 FT <br />CASING TYPE NA DIAMETER IN <br />SCHEDULE <br />INTERVAL <br />FT TO FT <br />SCREEN TYPE NA DIAMETER IN <br />SLOT SIZE <br />IN INTERVAL <br />FT TO FT <br />FILTER PACK TYPE -- NA <br />INTERVAL <br />FT TO FT <br />SURFACE SEAL TYPE NEAT CEMENT <br />INTERVAL <br />FT TO FT <br />COMMENTS: WATER SAMPLE COLLECTED <br />FROM TEMPORARY WELL SCREEN <br />PAGEL OF 1 <br />WELL <br />DETAIL <br />DEPTH <br />FT. <br />PID <br />PPM <br />SAMPLE -11 <br />BLOWCOUNT <br />U.S.C. <br />LOG <br />DESCRIPTION <br />0-10.5 LEAN CLAY (CL); 5% SND; 95% FNS; M TGHNESS; L PLAST; GRY, NO OR, <br />DRY. <br />2 <br />4 <br />CL <br />6 <br />8 <br />w10 <br />SB5-10 <br />vvi <br />1.5 <br />10.5'-21.5' SILTY SAND (SM); 60% FN, SA, P GRDD SND; 40% FNS; BRN, NO ODOR, <br />12 <br />DRY. <br />W <br />3 <br />r <br />a <br />14- <br />0 <br />CL <br />16 <br />SM <br />—18- <br />-20— <br />1.0 <br />SB5-20 <br />—22- <br />-24- <br />-26— <br />26 <br />Z <br />28 <br />WATER SAMPLE SBS-28GW TAKEN FROM TEMPORARY WELL SCREEN. <br />—30- <br />-32— <br />RE® (a�O` <br />34 <br />JOHN R <br />36 <br />�,� 0.6795 <br />40 <br />