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PUBLIC HEALTH SERVICES UlN <br /> SAN JOAQUIN COUNTY m .� A <br /> ENVIRONMENTAL HEALTH DIVISION <br />' Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P O Box 388 • Stockton, CA 95201-0388 �L1Foe`'� <br /> (209) 468-3420 <br /> State of California BAR 0 199 <br />' Department of General services <br /> Office of State Architect <br /> 400 P Street, 5th Floor <br /> Sacramento CA 95814 <br />' RE: FORMER UNDERGROUND STORAGE TANKS SITE CODE: 1165 <br /> Stockton Developmental Center <br /> Stockton CA 95202 <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 September 23, 1991. <br /> The presence of contaminants at your facility exceed �he allowable limits of <br /> leaching potential as recommended by the LUFT Manual 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 (Leah)/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 Ris Neon of tian I0aquin County Health(.are 14er%Ked <br />