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imuElVED <br /> OCTR rp <br /> 2 2 1992 <br /> 9NVIRONMENTAL HEALTH <br /> ā‘00 GROUNDWATER PERM IT/SthV100 <br /> Dā‘ TECHNO LOGY, INC: 4057 Port Chicago Highway,Concord,CA 94520(415)671-2387 <br /> FAX:(4151685-9148 <br /> October.20, 1992 <br /> Job No. 023202258 <br /> Mr. Lon Kitagawa <br /> BP Chemical <br /> Advanced Materials Division , <br /> P.O. Box 6189 <br /> Stockton, California 95206 <br /> SUBJECT: Corrective Action Work Plan <br /> BP Chemical Facility (SJCEHD Site Code 2042) <br /> 3437 South Airport Way <br /> Stockton, California : } <br /> Dear Mr. Kitagawa: f <br /> Groundwater Technology has prepared-this Corrective Action Work Plan which describes the <br /> planned soil remediation (overexcavation) activities at the BP Chemical facility at 3437 South Airport <br /> Way in Stockton, California. Because these planned activities are defined as Corrective Actions <br /> `-according to the California Code. of Regulations (CCR) Title 23;r Division' 3, Chapter 16, Article 11,this <br /> Work Plan was prepared in anticipation of submittal for public notification by the San Joaquin <br /> County Environmental Health Division (SJCEHD). This Work Plan presents a brief site history <br /> followed by a description of the.planned activities (scope of work) and anticipated schedule. <br /> SITE HISTORY <br /> The BP,Chemical facility owned and operated a gasoline underground storage tank (UST) and fuel f <br /> dispenser system which was removed before January 1991.. After the UST had been removed, BP <br /> Chemical retained Groundwater Technology to conduct a limited environmental assessment to <br /> evaluate the extent of petroleum hydrocarbons in the soil and groundwater. The results of the <br /> assessment conducted by Groundwater Technology indicated that the soil immediately adjacent to <br /> the former UST contained detectable concentrations of petroleum fuel constituents. On the basis of f <br /> v <br /> the available analytical results, it appears that the groundwater beneath the BP Chemical facility has <br /> not been affected by the operation and storage of petroleum fuel hydrocarbons. <br /> Because petroleum fuel hydrocarbons were detected in soil from the former UST excavation, <br /> ,r <br /> Groundwater Technology recommended additional excavation to remove and dispose of the affected <br /> soil. In a letter dated June 17, 1992, the SJCEHD concurred with the recommendations for the <br /> overexcavation as an appropriate remedial/corrective action. The SJCEHD requested the <br /> n , <br /> preparation and submittal of this work plan for public notification. <br /> Offices throughout.the U.S..Canada and Overseas .. <br />