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PUBLIC HEALTH SERVICES <br /> Pqulry <br /> SAN JOAQUIN COUNTY x°'-T.co <br /> ENVIRONMENTAL HEALTH DIVISION w <br /> Ernest M. Fujimoto , M.D. , M.P.A. , Acting Health Officer <br /> 304 E.Weber Ave., 3rd Floor • P. O. Box 388 • Stockton, CA 952014388 <br /> 209/468-3420 <br /> ATTN BOB MULFORD COPY <br /> September 6 , 1995 <br /> FRONTIER TRANSPORT INC3577 W PHILADELPHIA <br /> CHINO CA 91710 <br /> RE : FRONTIER TRANSPORTATION FACILITY SITE CODE : 232257 <br /> 425 LARCH RD <br /> TRACY CA 95376 <br /> San Joaquin County Public Health Services , Environmental Health Division <br /> ( PHS /EHD ) has recently reviewed the analytical results of the soil and/or <br /> water samples taken from beneath the underground storage tank ( s ) that were/was <br /> removed from this site on July 21 & 22 , 1995 . <br /> The presence of contaminants at your facility exceed the allowable limits of <br /> leaching potential as recommended by the LUFT Manual ' . The former underground <br /> storage tank ( s ) ( UST ) cannot be recommended for final closure without further <br /> investigation to determine the full extent of the soil and/ or groundwater <br /> problem . <br /> PHS /EHD is providing you notification that an "Underground Storage Tank <br /> Unauthorized Release ( Leak) / Contaminated Site Report " has been filed pursuant <br /> to Section 25295 of the Health and Safety Code (HSC ) . The appropriate <br /> disclosure of a hazardous waste discharge pursuant to Section 25180 . 7 of the <br /> Health and Safety Code has been made , and the site has been placed on the list <br /> of contaminated sites in San Joaquin County which is maintained by PHS /EHD . <br /> PHS /EHD has been designated by the State of California Water Resources Control <br /> Board ( SWRCB ) as the local agency overseeing the investigation of leaking <br /> USTs . Pursuant to Section 25299 . 37 (HSC ) , " dischargers " must take corrective <br /> action in response to the unauthorized release . <br /> Please be advised that PHS /EHD will be utilizing the SWRCB " Prioritization <br /> System for Leaking Underground Storage Tank Sites " ranking list in order to <br /> prioritize all the contaminated sites . The " Prioritization System " has <br /> established criteria to distinguish between High Priority Sites , Moderate <br /> Priority Sites , and Low Priority Sites . Site specific conditions which <br /> influence the placement within the ranking system are , for example , depth to <br /> groundwater , proximity to a drinking water source (municipal or domestic <br /> well ) , the extent of soil contamination , and the site ' s clean up funding <br /> availability . <br /> Based upon the priority ranking , you will be directed to begin the required <br /> investigation . However , given the conditions for the prioritization , wherever <br /> possible PHS /EHD will work with you to coincide enforcement directives in <br /> conjunction with secured clean up funding . If you have any questions , contact <br /> the PHS /EHD Site Mitigation unit for further information at ( 209 ) 468 - 3450 . <br /> If your tank removal was recent and you are not planning any remedial <br /> activities within 90 days , the tank excavation should be closed . It has been <br /> our experience that open tank excavations allow for rapid downward migration <br /> of contaminants . Contact the appropriate building department for specific <br /> requirements that may be necessary prior to filling with pea gravel and/or <br /> compacting the tank excavation with clean fill soil _ <br /> A Division of San Joaquin County Health Care Services <br />