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. Advanced <br /> • -BORING LOG <br /> a GeoEnvironmental, Inc. <br /> BOREHOLE NO.: OW-4 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209)467-1006 FAX: (209)467-1118 TOTAL DEPTH: 15.5 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 <br /> Date(s) Drilled: 26 January 2011 <br /> Notes: Boring for well OW-4 completed as = Water Level Before Drilling Page 1 of 1 <br /> 1-inch ozone sparging well. m Water Level After Drilling <br /> Depth Salm�ple Blows PID Soil USCS Class and Well Well <br /> (per 6") (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> _5 CL:dark gray,CLAY,hydrocarbon HC odor <br /> Cement grout seal <br /> from 0.5 to 7'bsg. <br /> Q <br /> Bentonite seal from 7' <br /> to 11' bsg. <br /> -10 <br /> #2/16 sand from 11'to <br /> 15.5'bsg. <br /> a CL:hard,CLAY,some sandy clay from 13.5 to X <br /> 50 Micron Diffuser <br /> OW4-14' 11,17,23 - ;9` 13.75 Screen from 13'to 15' <br /> -15 bsg. <br />