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oil pq <br /> Engineers <br /> Pianners <br /> Economists ;' 1992 <br /> arc 6,Sc3.99Vs ('I�k LH p�l.1H <br /> SF031604 .RP <br /> Ms. Carol Oz <br /> San Joaquin County Public Health Services <br /> P.O. Box 2009 <br /> Stocktrn, California 95201 <br /> e <br /> Subject: Underground pipe removal and investigation results <br /> for 110 N. Filbert Street, Stockton, California. <br /> Dear Ms. Oz: <br /> On January 21 and 22, 1992, underground piping associated with <br /> three former underground gasoline tanks was excavated and <br /> removed from Del Montes 110 North Filbert property in <br /> Stockton, California (also known as the Disco property) . <br /> Please find enclosed the following required documents: <br /> #„ Analytical results (also mailed directly from the <br /> laboratory to PHS) . <br /> Piping disposal receipt. <br /> • Waste manifest for rinsate water. <br /> The pipe excavation and soil sampling were performed according <br /> to the Permit Application (December 3, 1992) and the Amendment <br /> Letter (January 16, 1992) , both approved by PHS. The soil <br /> sampling was per by Bern Baumgartner/CH2M HILL and <br /> observed by Ms. Carol Oz/PHS. <br /> "? The underground gasoline and water pipes associated with the <br /> l former gasoline station were excavated by Petersen Engineering <br /> of Sacramento, California. <br /> Five soil samples were collected from the boroximateltom of hetwo <br /> pe <br /> excavation trenches (SP-1 through SP�-5) , app y <br /> feet below the excavated piping. Three soil samples were <br /> collected from the excavated soil piles (ES-1 through ES-3) <br /> :.`. ..... .._ (attach.ed. figure) . The attached table presents the analytical <br /> _ results of the soil samples Total petroleum hydrocur on ._. __ ._. <br /> gasoline (TPH-gas) and benzene, toluene, ;ethyl benzene, and <br /> xylenes {BTEX) were nonc �:tectable for .all `soil samples, except <br /> i` <br /> 0.01x mg/kg of toluene :in sample ES-3. The lead level of <br /> GN2744 NlLC Son Francisco office6425 Christie Avenue.Suite 500 d 15.652,2426 <br /> Emeryville,CA 94608 Fax 415,652.0452 <br />