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Advanced U UORING LOG <br /> GeoEnvironmental,'Inc. BOREHOLE NO.: OW-1 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX: (209) 467-1118 TOTAL DEPTH: s Feet <br /> Project: FORMER CURTIS PONTIAC-BUICK Drilling Co.: All Well Abandonment <br /> Site Location: 2450 Toste Road Rig/Auger Type: CME-75 LAR/8-inch dia. hollow stem <br /> Tracy, California Logged By: B. Millman <br /> Reviewed By: W. Little <br /> Project No.:. AGE-NC-96-0254 Dates) Drilled: 26 January 2011 <br /> Notes: Boring for well OW-1 completed as a Water Level Before Drilling Page 1 of 1 { <br /> 1-inch ozone sparging well. s Water Level After Drilling <br /> Depth Sample Blows PID Soil USCS Class and Well Well 4 <br /> ID (per 6") (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> ® E <br /> vw <br /> CL:gray,SILTY CLAY, no hydrocarbon odor(HC) <br /> SM:gray,moist,SILTY SAND,HC odor <br /> -5 - Cement grout seal <br /> from 0.5 to 7'bsg. <br /> Q <br /> Bentonite seal from 7' <br /> to 11' bsg. <br /> I <br /> _10— <br /> #V1 <br /> 0 #2/16 sand from 11'to <br /> 16'bsg. <br /> SM:brown,,dense,saturated,SILTY SAND,slight <br /> OW1-14 - 19,21,25 - to moderate HC odor 50 Micron Diffuser <br /> Screen from 13'to 15' <br /> _15 CL: brown,saturated,SILTY SANDY CLAY,slight bsg. <br /> to moderate HC odor <br /> on <br />