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PUBLIC I 1EALTH SERV jLCES <br /> p}q�l ! N O <br /> SAN JOAQUIN COUNTY �• :� <br /> r.� <br /> ENVIRONMENTAL HEALTH DIVISION a: <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 952 [ ,D • oRa`Y <br /> 209/468-3420 0� ) L <br /> FLOYD BARNES MAY p 1997 L6 <br /> 9744 FOUNTAIN VALLEY <br /> STOCKTON CA 95209 <br /> Re: Barnes Trucking Site Code: 2506 <br /> 1817 Fresno Ave <br /> Stockton CA 95206 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/ EHD) has completed review <br /> of the " Work Plan for Site Investigation" dated April 21 , 1997 that was prepared by Clearwater Group. <br /> PHS/ EHD has the following comments for your consideration and response as discussed during our May 8, <br /> 1997 meeting. <br /> The work plan proposed three soil borings which will be converted into monitoring wells to Investigate the <br /> soil contamination that was evidenced at 16 feet below ground surface during the 1992 tank removal <br /> sampling and to determine if groundwater has been contaminated. <br /> Additional soil borings will be necessary to determine the vertical and horizontal extent of the soil <br /> contamination in the area of the former tank pit and dispenser area. The dispenser area and piping was <br /> not sampled during the tank removal because the dispenser area was located less than 20 feet from the <br /> former tanks ; however, the dispenser and piping was located in the area of the tanks where the samples <br /> collected indicated the highest concentrations, warranting additional investigation. <br /> Also, a map to scale will be necessary prior to final approval of the proposed monitoring well locations. <br /> As we have discussed, the extent of groundwater contamination may be overestimated if the perimeter <br /> wells that define the plume ' s boundaries are located too far from the former tank pit. Without a scaled <br /> map,_Itis_difficult_to_determ ine�wh eth er-or_notthe-proposed-1 ocati o nsar_e-pl aced-too-far-to-perform-this <br /> initial groundwater investigation. <br /> Please submit an addendum addressing PHS/ EHD's comments along with a drilling permit application and <br /> S89 permit fee. Once PHS / EHD has approved the addendum , the drilling permit will be issued and field <br /> work may then be scheduled. Please contact PHS/ EHD at least two working days, prior to initiating the <br /> field activities, to confirm that a site inspection has been scheduled. <br /> If you have any questions, or wish to schedule a site inspection, please contact me at (209) 468-0337. <br /> Donna Heran , REHS, Director <br /> Environmental Health Division <br /> Mary Meays, Senior REHS MarMa , REHS <br /> Site Mitigation Unit Supervisor <br /> cc: Elizabeth Thayer, Central Valley Regional Water Quality Control Board <br /> cc: Jeanna Hudson , Clearwater Group, 520 Third Street, Suite 104, Oakland CA 94607 <br /> A Division of San Joaquin County Health Care Services <br />