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i <br /> PUBLIC PrEALTH SERV--rCES <br /> pa...H. <br /> SAN JOAQUiN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION Z< <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer, : <br /> rj <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95`202 �; `4Q-06" <br /> 209/468-3420 \ - <br /> CHIEF GENE LEBLANC APR 3 11997 <br /> TRACY RURAL FIRE DISTRICT <br /> 2294 5 SEVENTH ST <br /> BANTA CA 95376 <br /> Re: Tracy Rural Fire Station #1 Site Code: 1414 <br /> 22484 Seventh Street <br /> Banta CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> reviewed information regarding the site's status and has prepared the following directive for <br /> your response. <br /> The results of the analysis of the groundwater and soil samples collected on October 12, 1988 <br /> from beneath the former gasoline underground storage tank, evidenced the following <br /> contamination: <br /> Sample ID Benzene Toluene Ethylbenzene Xylene TPH-gasoline EDB Total Lead <br /> #1@10' soil <.20 <.20 <.20 <.20 <1.0 <.02 9.4 <br /> #2@11' soil <20.0 55.0 32.0 100.0 590.0 <2.0 11 <br /> #3@ 11' water <5.0 18.0 <5.0 11 <200.0 NA 0.84 <br /> Note: All results in ppm <br /> EDB: Ethylene Dibromide <br /> Additional investigation to determine the extent of the soil and groundwater contamination <br /> already evidenced will be required. There are a number of investigative methodologies that can <br /> be used including but not limited to: excavation, soil borings and monitoring wells installed <br /> using a hollow stem auger, or soil borings and grab groundwater samples using push point <br /> technology. The purpose of the investigation is to determine the vertical and horizontal extent <br /> of the soil and groundwater contamination. It is possible that the contamination is very limited <br /> and will not require remediation; however, should the results of this preliminary investigation <br /> indicate more extensive contamination, additional investigation and/or remediation will be <br /> required. <br /> Please submit by June 16, 1997 a work plan to initiate the investigation. If you have any <br /> questions, please do not hesitate to contact me at (209) 468-0337. <br /> Donna Heran, Director, REHS <br /> Environmental Health Division <br /> Mary Meays, Senior REHS Margar Lagorio, REHS� � <br /> Site Mitigation Unit Supervisor= <br /> cc: Elizabeth Thayer, Central Valley Regional Water Quality Control Board <br /> A Division of San Joaquin County Health Care Services <br />