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CAMBRIA <br /> March 23, 2001 <br /> Mr Mike Infurna <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street, Third Floor <br /> Stockton, California 95202 <br /> Re Site Investigation Work PlanlResponse Letter <br /> Shell-branded Service Station <br /> 2494 East Fremont Street <br /> Stockton, California <br /> SAP Code 136141 <br /> Incident No 98996181 <br /> SJCPHS Site 506171 <br /> Dear Mr Infurna <br /> Cambria Environmental Technology, Inc (Cambria) prepared this work plan/response letter <br /> on behalf of Equiva Services LLC (Equiva) in response to San Joaquin County Public Health <br /> Services, Environmental Health Division's (SJCPHSIEHD) February 9, 2001 letter The <br /> scope of work presented in this work plan is written to comply with SJCPHS/EHD and <br /> Regional Water Quality Control Board (RWQCB) guidelines <br /> RESPONSE TO SJCPHS/IEHD LETTER <br /> Quarterly Monitoring Report SJCPHSIEHD noted that the Blaine Tech Services' (Blaine) <br /> groundwater analytical data table had a footnote "b" added to the "Well ID" column This <br /> footnote "b" is defined as "Post-Development water level " We contacted Blaine regarding <br /> this and learned that this was a mistake The footnote should have been "d" for all four of <br /> the wells Footnote "d" is defined as "TPPH and BTEX analyzed by EPA Method 8260B " <br /> Blaine will make the appropriate changes to this table and it will be correct in the first quarter <br /> 2001 groundwater monitoring report We apologize for the confusion this mistake caused <br /> and thank you for bringing it to our attention <br /> Oakland, CA Further Assessment in Northwest Based on the data presented in our April 14, 2000 Site <br /> San Ramon CA Investigation Report the SJCPHSIEHD suggests that further assessment of hydrocarbon <br /> Sonoma CA impact is necessary in the northwestern portion of the site We agree with this suggestion <br /> Cambria and present, below, a work plan for further site assessment Additionally, our work plan <br /> Environmental proposes further assessment work in other areas of the site not specifically requested by <br /> Technology,Inc SJCPHS/EHD <br /> Perkins Street <br /> P 0 Box 259 <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />