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i <br /> FLUOR DANIEL GTl <br /> January 16, 1997 <br /> Ms.Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> 304 E.Weber Avenue,Floor 3 <br /> P.O. Box 388 <br /> Stockton,CA 95201-0388 <br /> Subject: Pre-Tank Lining Site Assessment Requirements <br /> Southland Store#17334 and Southland Store#20632 <br /> 4501 North Pershing Avenue 4627 Da Vinci Drive <br /> Stockton,California Stockton,California <br /> FDGTI Project#020700377 FDGTI Project#023305319 <br /> Dear Ms. Lagorio: <br /> Per your conversation with Jaff Auchterlonie,The Southland Corporation (Southland) is planning to line the <br /> underground storagetanks(USTs)and replace product;lines and dispenser's as part of a fueling system <br /> upgrade at the two subject sites. To obtain permit approval from the San Joaquin County Public Health <br /> Services(SJCPHS)for tank lining,FluorDaniel GTI proposes to conduct a pre-tank lining site assessment <br /> at the two subject sites. The purpose of the site assessment is to determine if a release of petroleum <br /> hydrocarbons associated with the USTs has impacted the soil or groundwater beneath the sites. <br /> The scope of work would include drilling six angled soil borings beneath the three 10;000-gallon gasoline <br /> USTs at the two sites. Attachment 1 includes site maps of the two subject sites with the proposed boring <br /> locations. The slant borings will be drilled to a:vertical depth of 15 feet below surface grade,or 3 feet <br /> below the end of each tank. One soil sample-will be collected at the maximum depth of each boring. Soil <br /> samples will be submitted to a State Certified Laboratory to be analyzed.for benzene,toluene, <br /> ethylbenzene, and total xylenes(BTEX),methyl-tert-butyl-ether(MTBE), and total petroleum <br /> hydrocarbons-as-gasoline(TPH-G). If groundwater is encountered in the soil borings during drilling,a grab <br /> water sample will be collected and submitted for laboratory analysis as described above. <br /> Upon your approval of our proposed scope of work,a separate workplan for the two sites will be submitted <br /> to the San Joaquin County Public Health Department. Upon completion,of the work at the site, a report <br /> J64 <br /> 0377tank.ltr(Sthl-56) <br /> 1401 Halyard Drive, Suite 140 /West Sacramento, CA 95691 USA (916) 372-4700 FAX(916) 372-8781 <br />