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ENVIRONMENTAL HEALTH)EPARTMENT <br /> SAN JOA COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. Tlllfd F100T Carl Borgman,R.E.H.S. <br /> Director 304 East Weber Avenue, Mike Huggins,R.E.H.S.,R.D.I. <br /> " `• Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,REES. <br /> • ca CP Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> C! o'R`' Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> August 16, 2002 <br /> Attn: Administration Office <br /> Stockton Unified School District <br /> 701 N. Madison <br /> Stockton, CA 95202 <br /> RE: 640 N. San Joaquin St., Stockton, CA 95202 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed the <br /> analytical results of the soil and water samples collected beneath the underground <br /> storage tanks that were permanently closed at this site on August 12, 2002. <br /> Based on the levels of contaminants present in the samples collected, further <br /> investigation to determine the extent of the soil and/or groundwater contamination is <br /> required. <br /> An "Underground Storage Tank Unauthorized Release (Leak)/Contaminated Site <br /> Report" has been filed pursuant to Section 25295 of the Health and Safety Code <br /> (HSC). The appropriate disclosure of a hazardous waste discharge pursuant to Section <br /> 25180.7 of the HSC has been made, and the site has been placed on the list of <br /> contaminated sites in San Joaquin County which is maintained by EHD. <br /> EHD under contract with the State of California Water Resources Control Board <br /> (SWRCB) oversees the investigation and remediation of contamination from leaking <br /> UST's. Responsible parties must take corrective action in response to an unauthorized <br /> release, in compliance with Section 25299.37 of the HSC and Corrective Action <br /> Regulations adopted pursuant to Section 25299.77 of the HSC. <br /> Unless further excavation of the tank pit is currently proposed, the tank excavation <br /> should be filled. Open tank excavations allow for downward migration of contaminants. <br /> Contact the appropriate building department for requirements prior to filling the <br /> excavation. <br />