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x,.. U S.00 <br /> PUBLIC hh"ALTH SERVICES <br /> ?oun, <br /> �- SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer _ <br /> 304 E. Weyer Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388^ ^.�4c;FaRa�P <br /> ` 2091468-3420 <br /> BOB MURDOCH 0-1 1 1 '11986 <br /> CITY OF STOCKTON <br /> 425 N ELDORADO ST <br /> STOCKTON CA 95202 <br /> Re: Fire Station #9 Site Code: 2399 <br /> 550 East Harding Way, Stockton CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> completed review of the "Site Characterization Work Plan" dated May 29, 1996 and prepared <br /> by The Twining Laboratories, Inc. PHS/EHD has the following comments for your <br /> consideration. <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 40 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 10 feet bgs. <br /> �— Please note that soil contamination was evidenced at 5 feet bgs and not at 12 feet bgs; <br /> therefore, PHS/EHD recommends that you begin collecting soil samples at 5 feet bgs rather <br /> than collecting the first soil sample at 10 feet bgs. The work plan stated that selected soil <br /> �— samples would undergo laboratory analysis. Please contact PHS/EHD 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 /> 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 /> PHS/EHD at least two working days prior to initiating field activities, so that PHSIEHD 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 /> Mary Meays, Senior REHS Margarefo, REH� <br /> Site Mitigation Unit Supervisor <br /> MM/550HAR.WOR �en <br /> cc: Elizabeth Thayer, CVRWQCB cc: Jones Twinnin9 <br /> A Division of San ioaquin Counn'Health Care Services <br />