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Wright <br /> ur L;1 o Z007. . <br /> Environmental <br /> ENVIRNMENT HEAUM <br /> PERMIT/SERVICES `-� Services Inc. <br /> 2395 EastPescadero Avenue <br /> Tracy,CA 95304 <br /> a i <br /> December 10, 2007 <br /> Project No. 4581 <br /> Mr. Paul Verma ' <br /> City of Tracy:-- <br /> 520 Tracy Boulevard. <br /> Tracy, CA 95376 <br /> Re: Workplan for Limited Soil Sampling and Preliminary . Environmental Site- <br /> Assessment, Tracy Airport, 29633 Tracy Boulevard, Tracy, CA; PHS EHD Site <br /> Code 1422 Wright Project No. 4581 , <br /> Dear Mr.:Verma, <br /> Wright Environmental Services, 'I'nc. (Wright) is pleased to provide you with this workplan for <br /> the environmental investigation at the Tracy Airport (Airport) located at 29633 Tracy Boulevard, <br /> Tracy, CA (see Figure. 1). . The purpose ..of this work is to- ascertain presence of suspected <br /> petroleum contaminants i-n soil.around the former underground petroleum fuel.tanks dispenser:: <br /> and fuel pipeline line °area as required by the San Joaquin County -Public Health Services <br /> Environmental Health Division (SJC/EHD) in their.letter dated October 17, 2007.. <br /> 1.0 Backgrotind and Technical Approach <br /> The Airport used two underground fuel storage tanks (Tank #1. 10,000 gasoline-.Tank #2 10,000. <br /> gallon gasoline)until their removal from the site on December 14, 1998. Soil excavated from the <br /> tank.pit, fuel line and dispenser was stockpiled on-site and soil samples were collected. The data <br /> suggested that leakage has occurred from-fuel line and dispenser into soil. A water sample was <br /> • not collected from the tank pit. Approximately 200 yards of contaminated tank backfill and soil <br /> was excavated from the tank pit, fuel line and dispensers area that was apparently returned to the <br /> tank pit;excavations. The'purpose of this work is to evaluate whether a declining trend of <br /> contaminants are observed in the soils analyses and if further work is warranted. <br /> Page I of 3 <br />