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PUBLIC s <br /> HEALTH ERVICES _ �,� <br /> SAN JOAQUIN COUN—Y <br /> ENVIRONMENTAL HEALTH )MSION N <br /> Ernest M. Fujimoto, M.D., M.P.H., Act ng Health Officer • <br /> 445 N. San Joaquin Street 0 P.O. Box 388 0 St i ckton, CA 95201-0388 i'Fi <br /> (209) 468-3420 <br /> .-7 <br /> CITY OF RIPON T I MAR 0 4 199-4 <br /> 311 W. First J <br /> Ripon CA.' 95366 <br /> RE. City of Ripon Corporation Yard SITE CODE: 1483 <br /> 1210 Vera <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/FHD) 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 May 23, 1990. <br /> The presence of contaminants at your facility exceed the allowable limits of <br /> leaching potential as recommended by the LUFT Manual 1. The former <br /> underground storage tank(s) (UST) cannot be recommended for final closure <br /> without further investigation to determine the full extent of the soil and/or <br /> groundwater 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 had been placed on the list <br /> of contaminated sites in San Joaquin County wiich is maintained by PHS/EHD. <br /> PHS/EHD has been designated by the State of CLlifornia Water Resources Control <br /> Board (SWRCB) as the local agency overseeing :he investigation of leaking <br /> USTs. Pursuant to Section 25299.37 (HSC) , "d .schargers" must take corrective <br /> action in-response to the unauthorized releast. <br /> Please be advised that PHS/EHD will be utiliz ng the SWRCB "Prioritization <br /> System for Leaking Underground Storage Tank S tes" ranking list in order to <br /> prioritize all the contaminated sites. The " rioritization System" has <br /> established criteria to distinguish between H gh Priority Sites, Moderate <br /> Priority Sites, and Low Priority Sites. Site specific conditions which <br /> influence the placement within the ranking syltem are, for example, depth to <br /> groundwater, proximity to a drinking water scarce (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' lirected 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/ZHD Site Mitigation Unit for further nformation at (209) 468-3450. <br /> If your tank removal was recent and you are n planning any remedial <br /> activities within 90 days, the tank excavatio a should be closed. It has been <br /> our experience that open. tank excavations all:)w for rapid downward migration <br /> of contaminants. Contact the appropriate buLlding department for specific <br /> requirements that may be necessary prior to fLlling with pea gravel and/or <br /> compacting the tank excavation with clean filL soil. <br /> Before receiving a PHS/EHD corrective action lirective and in order to receive <br /> the SWRCS Clean up Fund Letter of Committment, you must make application to <br /> A Division of San Joaquin County Healh Care Service% <br />