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SERVICESPUBLICTiEALTHU N <br /> �. .o <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION y . <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388 <br /> 209/468-3420 <br /> Chronology <br /> Union Ice �� <br /> 1320 West Weber Ave 'DRAFT <br /> Stockton CA 95203 <br /> Site Code: 1283 <br /> The site is still being operated as a frozen food cold storage facility under the business <br /> name of Union Ice/Sierra Pacific. Sierra Pacific is leasing the buildings from Union Ice. The <br /> site is located on San Joaquin County APN 145-190-13. In 1988, four underground <br /> storage tanks were removed and soil samples were collected from beneath the tanks. Free <br /> product was observed floating in the tank pit excavation. Between August 1989 and <br /> February 1991, monitoring wells were installed to investigate the extent of the <br /> groundwater contamination; two deep and nine shallow wells were installed. In 1990 a <br /> soil gas survey was conducted to evaluate the extent of soil contamination. In February <br /> 1991, approximately 800 cubic yards of soil was excavated and treated on site with <br /> residual soil contamination evidenced following the excavation attempt. In March 1992 <br /> eight soil borings were drilled (8X1 - 13X8) to determine the extent of soil contamination. <br /> In February 1993, in order to investigate a possible brine leak associated with the <br /> operation of the refrigeration system used in one of the warehouses, three monitoring wells <br /> were installed, MW10 - MW12. In March 1993, 2,000 cubic yards of soil was excavated <br /> and treated on site. Groundwater monitoring occurred throughout most of the <br /> investigation and remediation activities. <br /> 1988 <br /> 12/22/88 Four underground storage tanks are removed and soil samples collected. <br /> Tank Summary <br /> Tank ID Tank Size/Contents Date Removed Sample ID Date <br /> (gallons) Samples Collected BTEX/TPH <br /> Analysis <br /> Completed <br /> 2357-01 4,0OOIDiesel 12/22/88 1 A-East11 A-West 1114189 <br /> 2357-02 4,000/Diesel 12/22/88 2A-East/2A-West 1114189 <br /> 2357-03 1,000/Unleaded gas 12/22/88 #3 1114189 <br /> 1283-01 E37,000/Unleaded gas 1 12.22/88 113-South/113-North 1114/89 <br /> A Division of San Joaquin County Health Care Services <br />