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L <br /> u <br /> PUBLIC SERVISAN JOAQUIN CO �-ES <br /> ENVIxo ver aa!�rN <br /> NMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D, <br /> 304 E. Weber Ave. �I.P.II.' Acting Health Officer <br /> Third Floor • P. O, Bnx 388 • <br /> L Stockton, CA 95201-0388 <br /> 209/46&3420 <br /> BOB MURDOCH `- ~ <br /> CITY OF STOCKTON OG T tE� <br /> 4 425 N EL DORADO ST <br /> STOCKTON CA 95202 <br /> Re: Fire Station #7 <br /> 1767 West Hammer Lane, Stockton CA Site Code: 232403 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> completed review of the "Site Characterization Work Pian" dated May 29, 1996 and prepared <br /> by The Twirling Laboratories, Inc. PHS/EHD has the following comments for your <br /> considberation. <br /> r <br /> The work plan proposed a series of push-point soil borings to investigate the vertical and <br /> horizontal extent of soil contamination and to assess possible impacts to groundwater. One <br /> soil boring, SP1, will be advanced to groundwater which is expected to be encountered at <br /> approximately 30 feet below ground surface (bgs). The proposal indicated that soil samples <br /> would be collected from each soil boring at four foot intervals beginning at 12 feet bgs. <br /> j; <br /> Please note that soil contamination was evidenced at 7 feet bgs; therefore, PHSIEHD I <br /> recommends that you begin collecting soil samples at 6 feet bgs to evaluate the horizontal <br /> extent of soil contamination already evidenced. The work plan stated that selected soil ' <br /> samples would undergo laboratory analysis. Please contact PHSIEHD to discuss the <br /> selection of soil samples which will undergo laboratory analysis, so that sufficient soil <br /> samples will undergo analysis to characterize the extent of soil contamination. <br /> r <br /> Once PHS/EHD has received the appropriate permit fees, PHS/EHD will issue the drilling <br /> permit, and you may proceed with scheduling the proposed field work. Please contact <br /> PHSIEHD at least two working days prior to initiating field activities, so that PHS/EHD may <br /> schedule site inspections. <br /> If I can answer any questions or to schedule a site inspection, please do not hesitate to <br /> contact me at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> _ s <br />• �--• <br /> Mary Meays, Senior REHS <br /> Margaret <br /> a aret <br /> rorio, REHS <br /> Site Mitigation Unit Supervisor <br /> MM/1767HAM <br /> cc: Elizabeth Thayer, CVRWQC13 cc: vKen Jones, Twinning <br /> i <br /> A Division of San Joaquin County Health Care Services <br />