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MAS <br /> CATHERINE WHITWORTH <br /> TRUSTEE IN BANKRUPTCY <br /> P O BOX 280 <br /> DAVIS CA 95617 <br /> RE: CAL FARM SUPPLY COMPANY <br /> 2040 W WASHINGTON; STOCKTON <br /> BANKRUPTCY CASE NO. 287-04176-A-7 <br /> Representatives from the San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) and the Central Valley Regional Water Quality Control Board (CVRWQCB) met <br /> Wednesday, August 10, 1994 to ctscuss the above referenced site. As a result of this meeting, the <br /> following concerns must be resolved prior to closure certification of the site. <br /> Continue quarterly monitoring of ail 5 monitoring wells for the petroleum hydrocarbon constituents <br /> excluded from the previous quarterly groundwater sampling: Benzene, Toluene, Ethylbenzene, and <br /> Xylene, and Total Petroleum Hydrocarbons, Gasoline. Quarterly groundwater measurements <br /> performed to date indicate a shift in the gradient from northeast to northwest; no explanation was <br /> provided to account for the change in gradient. However, we note that the Port of Stockton, 2201 W. <br /> Washington Street, drilled a 10 inch cased irrigation well (100 feet deep with a 50 foot annular grout) in <br /> December, 1990, which would account for the gradient shift. <br /> The CVRWQCB is overseeing a groundwater investigation at the property to the west of the former Cal <br /> Farm site. Sampling data noted In the Kennedy/Jenks/Chilton report"Preliminary Site Investigation <br /> Report" dated 14 July 1989 documented nitrate contaminants in a groundwater sample collected from <br /> Monitoring Well #2. The monitoring wells shall undergo sampling for the following constituents: <br /> nitrates, organochlorine, organophosphate, carbamate, triazine, and chlorinated herbicides. The <br /> sampling activities will be coordinated under the direction of Wendy Wyles, CVRWQCB Agricultural <br /> Regulatory Unit, who will be contacting you directly. <br /> If you have any questions, please contact me at (209) 468-3452. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division DRAFT <br /> Diane M. Hinson, REHS, Supervisor <br /> Site Mitigation Unit <br /> cc: Wendy Wyles, CVRWQCB,Ag Regulatory Unit <br /> Elizabeth Thayer, CVRWQCB,UST Regulatory Unit <br /> Michael Infuma, PHS/EHD <br /> Charles Hall <br />