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�J <br /> HEALTH <br /> EIE]WGROUNDWATER <br /> �0❑ TECHNOLOGY INC. ' P 2''� <br /> � �� 4057 Port Chicago Highway,Concord,CA 9452014]5}671-2387 � <br /> �f FAX:1415)685.9148 <br /> June 11, 1993 I <br /> Project No. 042020074 <br /> r <br /> 11 <br /> Mr. Lon Kitagawa <br /> BP Chemical - Advanced Materials Division <br /> 3437 South Airport Way j <br /> Stockton, California 95207 11 <br /> I <br /> SUBJECT: Corrective Action Closure Report <br /> BP Chemical Facility (SJCEHD Site Code 2042) <br /> 3437 South Airport Way <br /> Stockton, California <br /> I <br /> i <br /> Dear Mr. Kitagawa: <br /> Groundwater Technology has prepared this Closure Report to document the corrective action measures <br /> completed at the BP Chemical facility at 3437 South Airport Ways in Stockton, California. This work was <br /> conducted according to the Corrective Action Work Plan (dated.November 3, 1992) which was approved <br /> by the San Joaquin County Environmental Health Division (SJCEHD). This report presents a summary <br /> of corrective actions, a brief description of sampling methods aril analytical results. Groundwater <br /> Technology requests the SJCEHD concurrence that the goals of the Corrective Action Work Plan have <br /> been met and that no further corrective action is required for this site (SJCEHD Site Code 2042). <br /> BACKGROUND <br /> .j <br /> The BP Chemical facility owned and operated an underground storage,tank (UST) and fuel dispenser <br /> system which was removed before January 1991. The tank stor., fuel for an engine used to test <br /> various products manufactured at the BP facility. After the UST and test engine had been removed, BP <br /> Chemical retained Groundwater Technology to conduct a limited environmental assessment and <br /> subsurface investigation to evaluate the extent of petroleum hydrocarbons and lead in the soil and <br /> groundwater. <br /> i� <br /> Subsurface Investigation <br /> 3 <br /> In March 1992, Groundwater Technology conducted a subsurface investlgation (Work Plan dated <br /> October 1991) to evaluate the vertical extent of petroleum hydrocarbons in the soil near the former <br /> underground storage tank. That investigation included drilling two soil borings (each approximately 40 <br /> +. CACR0074.oK <br /> ii <br /> Offices throughout the L:S.,Canada and(Overseas j <br /> k <br />