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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY U�i6 <br /> ENVIRONMENTAL HEALTH DIVISIONKaren Furst, M.D., M.P.H., Health OfficerLC' a Y304 East Weber Avenue, Third Floor • Stockton, CA 95 0 <br /> 2091468-3420 JUN 0' 3 1998 <br /> HEINZ USA <br /> P O BOX 57 <br /> PITTSBURGE PA 15230-0057 <br /> RE: 757 E ELEVENTH ST SITE CODE: 1390 <br /> TRACY CA 95378-0057 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) is the lead <br /> agency providing the oversight of the investigation and cleanup of releases from underground <br /> storage tanks (USTs) within San Joaquin County. PHS/EHD has a contract with the California <br /> State Water Resources Control Board to conduct a UST corrective action program. The above <br /> referenced site has been placed in the PHS/EHD Local Oversight Program (LOP). <br /> On August 29, 1997 PHS/EHD reviewed a Phase II Environmental Site Assessment Work Plan <br /> (WP) prepared by ERM and issued a permit to perform soil and groundwater sampling in the <br /> areas of two USTs previously closed in place. The soil and groundwater sample results from both <br /> UST areas evidenced gasoline contamination which required further soil and groundwater <br /> investigation and remediation. <br /> On October 14, 1997 PHS/EHD completed and filed an Unauthorized Release Form for the <br /> documented soil and groundwater contamination from the two(2) USTs. A Notice of <br /> Responsibility dated October 21, 1997 was mailed to you as notification that the site had been <br /> assigned to the PHS/EHD LOP. <br /> ERM, on behalf of Heinz, prepared and submitted a UST Removal WP in January 1998. <br /> PHS/EHD approved the WP and the proposed work was completed (UST1 and UST2 were <br /> removed during PHS/EHD inspection on February 18, 1998). Subsequent to UST removal, soil <br /> was excavated and the tank excavations were dewatered during two (2) distinct phases of work. <br /> Due to residual gasoline contamination left in place, further delineation/characterization was <br /> warranted. <br /> In early April 1998, additional soil and groundwater data was collected which further defined the <br /> extent of the releases. Based upon the data collected from all phases of the investigation, <br /> groundwater monitoring wells (MWs)were installed and sampled. Additional sample results from <br /> these data points will be reviewed to determine the effectiveness of the remedial activities <br /> performed. When the groundwater sampling data indicates remaining contamination will no <br /> longer adversely impact water quality, no further action and site closure will be considered. <br /> If you have any further questions regarding this matter, contact Harlin Knoll at(209)468-3442. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> Harlin Knoll, Senior REHS ZargarerLago�rioREHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> cc: CVRWQCB-Mark List <br /> HF-INz <br /> A Division of San Joaquin Counry Hcalrh Care Services <br />