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PUBLIC HE SERVICES <br /> L HEALTH S CES P <br /> SAN JOAQUIN COUNTY =: 1 <br /> ENVIRONMENTAL HEALTH DIVISION w. <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P. O. Box 388 • Stockton, CA 95201-0388 4<ipoRp <br /> 209/468-3420 <br /> DAN KIRK <br /> SHELL OIL <br /> PO BOX 5278 NOV . <br /> CONCORD CA 94520 O U U 9 1994 <br /> Re: Shell Service Station Site Code: 1223 <br /> 6131 Pacific Ave <br /> Stockton CA 95207 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed review of <br /> the "Third Quarter 1994 Groundwater Monitoring Report" dated October 7, 1994 and the "Interim Remediation <br /> Workplan" dated August 30, 1994 both prepared by Fugro West. PHS/EHD has the following comments for your <br /> consideration. <br /> The monitoring report indicated that the extent of groundwater contamination has not yet been defined. PHS/EHD <br /> indicated in correspondence dated July 7, 1994 that an off site access agreement with the Porter Station property <br /> owner had been obtained and that an off site access agreement with the property owner to the south was pending <br /> finalization of redevelopment plans. For your information construction on the property to the south has been initiated <br /> so the redevelopment plans must have been finalized. Please proceed with obtaining an access agreement to install <br /> the additional monitoring wells necessary to define the groundwater contamination plume. <br /> The remediation work plan proposed to initiate periodic groundwater extraction at the time of quarterly monitoring. <br /> PHS/EHD understands from Fugro that after groundwater samples are collected an additional 40 - 50 gallons of <br /> groundwater will be removed. The extracted groundwater will be disposed of by Blaine Tech with the purge water. <br /> Please note that this volume of groundwater represents approximately the same volume that is removed during <br /> purging and may have a limited value. The work plan indicated that documentation will be provided in subsequent <br /> quarterly reports. <br /> If you have any questions please contact Mary Meays at(209)468-0337,as I have been assigned to provide oversight <br /> for this site. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> 4 <br /> Mary Meays, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> MM/6131 PAC <br /> cc: Elizabeth Thayer, CVRWQCB <br /> cc: Craig Robertson, Fugro West <br /> A Division of San Joaquin County Health Care Services <br />