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C A M B R I A RE�EQWE0 <br /> JUN 1 5 2005 June 9, 2005 <br /> Mr Jeffrey Wong ENORONMEN1 HEALTH <br /> San Joaquin County Environmental Health Department PER fill/SE;RVICES <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re First Quarter 2005 Groundwater Monitoring Report <br /> Shell-branded Service Station <br /> 4315 Waterloo Road <br /> Stockton, California <br /> Inc>dent No 98996183 <br /> SJCEHD Code 1760 <br /> Cambria Project No 247-1359-002 <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) in accordance with the quarterly reporting <br /> requirements of 23 CCR 2652d <br /> FIRST QUARTER 2005 ACTIVITIES <br /> Groundwater Monitoring Blaine Tech Services, Inc (Blaine), of San Jose, California attempted <br /> to gauge and sample all site wells on January 5, 2005, but none of the wells contained sufficient <br /> water to sample Blaine returned to the site on March 7, 2005, gauged and sampled all site wells, <br /> and prepared a summary table of field gauging data Cambria prepared a site vicinity map which <br /> includes previously submitted well survey data (Figure 1) and a groundwater elevation contour <br /> map (Figure 2) Blaine's report and field sheets are included as Attachment A <br /> Tank, Dispenser, and Piping Removal Shell ceased operations at the site during March 2005 <br /> and removed two 15,000-gallon gasoline underground storage tanks (USTs), four dispensers, and <br /> associated product piping on March 18, 2005 Cambria collected soil samples following the <br /> equipment removal and will submit a report under separate cover <br /> Site Investigation San Joaquin County Environmental Health Department (SJCEHD) approved <br /> Cambria's September 17, 2004 Site Investigation Work Plan in their March 29, 2005 letter <br /> Cambria <br /> Environmental <br /> Technology,Inc <br /> Hollis Street <br /> Suite A <br /> Emeryville,CA 94608 <br /> Tel(510)420-0700 <br /> Fax(510)420-9170 <br />