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i <br /> TOSCO-BP page 2 <br /> 1403 Country Club Blvd.,Stockton. <br /> The PAR is to identifythe lateral and vertical limits of the soil and groundwater plume, and <br /> g P ' <br /> is to be formatted as described within "Appendix A, Tri-Regional Board Staff <br /> Recommendations for Preliminary Investigation and Evaluation of Underground Storage <br /> Tank Sites", dated 30 August 1991. If the PAR cannot be submitted due to insufficient <br /> data, a work plan to continue the investigation is due by December 1,2000. The <br /> purge and disposal method for petroleum contaminated groundwater may be tested during <br /> the investigative phase and the report of findings is to be submitted by January 15, 2001 if it <br /> is not included in the PAR <br /> Manyprevious PHS-EHD correspondences have directed TOSCO-BP to identify ALL of <br /> the traffic boxes and casings located on this site. Unidentified PVC casings remain inside of <br /> unlocked traffic boxes. You are hereby directed to identify the casings, accurately map <br /> their location,and submit information that reveals their purpose and specifications. <br /> The results of the traffic box-casing identification is to be either in the PAR or the in the <br /> work plan due by December 1,2000. Casings that do not serve a purpose or provide a <br /> contaminant pathway to the groundwater are to be removed, or destroyed,or sealed <br /> (grouted) under a PHS-EHD approved work plan and inspection. <br /> i <br /> Please continue to submit your correspondences to Michael Infuma and you may contact <br /> him at (209) 468-3454 should you have any questions or wish to discuss the site. <br /> Donna Heran,RENS,Director <br /> Environmental Health Division <br /> Michael J. Infurna Jr.,Senior RENS Dot Lofstrom,RG <br /> Site Mitigation Unit IV/LOP Engineering Geologist <br /> E <br /> c: Gettler Ryan- Doug Lee, 6747 Sierra Ct.,Ste J.,Dublin,94568. <br /> — Hartzell Sacramento. <br /> c: CVRWQCB Marty I <br /> i <br /> I <br /> i <br />