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A M B R ! A April 21, 2005 <br /> Mr Jeffrey Wong <br /> San Joaquin County Environmental Health Department D <br /> 304 East Weber Avenue, Third Floor CM <br /> VECD) <br /> Stockton, California 95202 <br /> Re Fourth Quarter 2004 Groundwater Monitoring Report APR 2 8 ?-005 <br /> Former Shell Service Statton/Econo Gas ENROMMENT HEALTH <br /> 880 Victor Road PERWISERy10ES <br /> Lodi, California <br /> Incident No 98995526 <br /> SJCEHD Site Code 1746 <br /> Cambria Project#247-0955-002 <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 26524 <br /> �i FOURTH QUARTER 2004 ACTIVITIES <br /> Groundwater Monitoring Blaine Tech Services, Inc (Blaine) of San Jose, Calitornia gauged <br /> and sampled all site wells and prepared a summary table of field gauging and laboratory <br /> analytical data Cambria prepared a site vicinity map which includes previously submitted well <br /> survey intormation (Figure 1) and a groundwater elevation contour map (Figure 2) Blaine's <br /> report, presenting the laboratory report, is included as Attachment A <br /> The samples from the initial sampling event conducted on November 4, 2004 were analyzed <br /> outside of the EPA recommended hold time Therefore, Blaine re-sampled the site on <br /> December 6, 2004 Blaine's report (Attachment A) includes both sets of data <br /> Additional Activities In their October 27, 2004 letter, San Joaquin County Environmental <br /> Health Department (SJCEHD) requested additional assessment and remedial activities SJCEHD <br /> concurred with Cambria's proposal to move proposed well MW-12 on site, and also suggested <br /> that proposed well MW-13 be moved to the San Joaquin County Mosquito and Vector Control <br /> Cambria property Figure 2 shows the revised locations for these proposed wells <br /> Environmental <br /> Technology, Inc <br /> 0 H0111S Street <br /> Suite A <br /> Emeryville CA 94608 <br /> Tel(510)420-0700 <br /> Fax(510)420-9170 <br />