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C A M B R I A W , M7 <br /> 3�Bd61'l i..tte Id�i'l..iV i HLA.LM, <br /> PERMIT/SERVICES <br /> March 15, 2007 <br /> Ms.Vicki McCartney <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, 3rd Floor <br /> Stockton, California 95202 <br /> Re: Quarterly Status Report--First Quarter 2007 <br /> Shell-branded(Independent)Service Station <br /> 341 East Main Street <br /> Ripon, California <br /> SAP Code 135816_ <br /> s_A Incident No.98995874 <br /> SJCEHD Site Code: 506186 <br /> Dear Ms. McCartney: <br /> Cambria Environmental Technology, Inc. (Cambria) is submitting this letter 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 2007 ACTIVITIES <br /> Quarterly monitoring activities had been suspended at this site per agreement with San Joaquin <br /> County Environmental Health Department (SJCEHD) after submitting a case-closure*request on <br /> June 9,2005. Subsequently we issued a Fate and Transport Modeling Report(July 26,2006)and <br /> a Vapor Intrusion Analysis (November 14, 2006) as requested by SJCEHD for case closure <br /> evaluation. <br /> We've received SJCEHD's March 5, 2007 letter requesting that the groundwater monitoring <br /> wells be sampled at this site to assess current groundwater.conditions at the site prior to final case <br /> closure review. We have scheduled this sampling event to occur on March 22, 2007. <br /> ANTICIPATED SECOND QUARTER 2007 ACTIVITIES <br /> We will prepare a groundwater monitoring report for the sampling event mentioned above. f " <br /> Cambria <br /> Environmental r <br /> Technology,Inc. _ <br /> 19449 Riverside Drive <br /> Suite 230 <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />