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4 <br /> CAMBRIA <br /> April 30, 2001 <br /> Ms Lori Duncan <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report - First Quarter 2001 <br /> Shell-branded Service Station <br /> 6131 Pacific Avenue <br /> Stockton, California <br /> SAP Code 136149 <br /> Incident No 98996189 <br /> SJCPHS Site Code 1223 <br /> Dear Ms Duncan <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equiva <br /> Services LLC in accordance with quarterly reporting guidelines issued by the Central Valley <br /> Regional Water Quality Control Board and San Joaquin County Public Health Services, <br /> • Environmental Health Division (SJCPHS/EHD) <br /> FIRST QUARTER 2000 ACTIVITES <br /> Blaine Tech Services, Inc (Blaine) of San lose, California gauged and sampled the site wells <br /> and prepared a summary table of field gauging data and gasoline constituents Cambria <br /> prepared a site vicinity map (Figure 1) and a groundwater contour/chemical concentration <br /> map (Figure 2) Blaine's report, presenting the laboratory report, is included as Appendix A <br /> ANTICIPATED SECOND QUARTER 2001 ACTIVITIES <br /> Blaine will gauge and sample the site wells according to the existing sampling schedule and <br /> tabulate the data Cambria will prepare a groundwater monitoring report <br /> ri ncilkir_ <br /> VLVV11\V <br /> Oakland, CA <br /> San Ramon, CA Z pap <br /> Sonoma CA Cambria submitted a work plan to SJCPHS/EHD on January 31, —HO99- for further <br /> investigation at this site and received approval from SJCPHS/EHD to implement the work <br /> Cambria plan The two proposed onsite soil borings were completed on May 23 and 24, 2000 <br /> Environmental <br /> nologyl lne Cambria has received a fully executed access agreement to install the proposed monitoring <br /> well in the parking lot of the strip mall located at 6025-6045 Pacific Avenue We have also <br /> 270 Perkins Street <br /> P a sox 259 received an encroachment permit from the City of Stockton to install the two proposed wells <br /> Sonoma,CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />