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i <br /> x <br /> CAM B RIA <br /> June 20,2005 <br /> Mr.Jeffrey Wong <br /> l San Joaquin County Environmental Health Department , <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202-2708 <br /> Re: Site Investigation Report and <br /> Updated Sensitive Receptor Survey <br /> Shell-branded Service Station <br /> 2375 West Grant Line Road <br /> Tracy,California . <br /> SAP Code 136187. <br /> Incident No.97471967 . <br /> SJCEHD Site Code 0001473 <br /> Dear Mr.Wong: <br /> Cambria Environmental Technology., Inc (Cambria) prepared .this report on behalf of Equilon <br /> Enterprises LLC dba Shell Oil Products US(Shell)to document recent site investigation activities <br /> at the referenced site (Figures 1 and 2). This document includes an updated sensitive receptor <br /> survey and an investigation report further assessing the lateral and vertical extent of gasoline <br /> constituents in soil and groundwater beneath the site. Cambria completed a portion of the scope <br /> of work presented in our November 18, 2004 Sensitive Receptor Survey Report and Site <br /> f. Investigation Work Plan which was approved by the San Joaquin County Environmental Health <br /> Department's (SJCEHD) in their December 2, 2004 letter to Shell. Additionally, Cambria <br /> followed the scope of work presented in our February 8, 2005 Site Investigation Work Plan <br /> Addendum. The work was performed in accordance with Regional Water Quality Control Board <br /> (RWQCB)and SJCEHD guidelines. <br /> i <br /> SITE BACKGROUND <br />} Site Description <br /> 1 <br /> The site is an operating Shell-branded service station located on'the northwest corner of West <br /> Grant Line Road and Joe Pombo Parkway in Tracy, California(Figures 1 and 2). The site layout <br /> consists of four underground storage tanks (USTs), nine dispenser islands containing eleven <br /> f. Cambria dispensers, a station building, and a car wash. -There are three active service stations located <br /> Environmental nearby the subject site. An ARCO service station is located to the east, an active 7-Eleven <br /> Technology,Inc. <br /> 270 Perkins Street <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br /> t <br />{ <br /> F <br /> i <br />