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1 <br /> PUBLIC�EALTH SERNPrCES <br /> SAN JOAQUIN COUNTY Q' <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer :. P <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> �t <br /> ALFRED CALDRON t�6 <br /> FD-)Y <br /> CALDRONS GENERAL STORE <br /> 12750 WEST BYRON ROAD <br /> TRACY CA 95376 SEP 0 9 1994 <br /> RE: Caldrons General Store SITE CODE: 1531 <br /> 12750 West Byron Rd. <br /> Tracy CA 95376 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has <br /> reviewed the report for the remediation of petroleum hydrocarbon impacted soil, dated August <br /> 18, 1994, submitted by Geological Audit Services, Inc. for the above referenced site. <br /> Laboratory results obtained from sampling stockpiles SP-3 and SP-4 on June 14, 1994 and <br /> August 1, 1994 for Total Petroleum Hydrocarbons as Gasoline (TPH-g) and Benzene, Toluene, <br /> Ethyl Benzene and Xylene (BTEX) confirm that the level of contamination for these constituents <br /> is below detection limits. The report seeks approval to backfill the existing excavation with soil <br /> from stockpiles SP-3 and SP-4. These two stockpiles may be returned to the excavation. <br /> The levels of contaminants in SP-1 and Sp-2 are slightly above and at detection limits <br /> respectively and require additional treatment. An air pollution permit or exemption shall be <br /> obtained from the Air Pollution Control District (APCD) for aeration of the remaining <br /> hydrocarbons in stockpile SP-1 and SP-2. <br /> Because only two of the stock-piles may be returned to the excavation at this time PHS/EHD <br /> recommends the use of native soil as additional backfill material to fill the excavation to surface <br /> grade. <br /> In the April 14, 1994 workplan submitted by Geological Audit to PHS/EHD a request to defer <br /> installation of monitoring wells until the soil stockpiles had been remediated was granted by <br /> PHS/EHD. At this time PHS/EHD considers progress on the stockpiles to be near completion. <br /> Implementation of the groundwater investigation shall begin promptly. <br /> Permit #93-2073 for installation of three monitoring wells by V and W Drilling is current until <br /> October 12, 1994. If the wells are not installed on or before that date a new permit application <br /> and fees shall be submitted to PHS/EHD. <br /> A Di}ision of San Joaquin County Health Care Services <br />