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STATE OF CALIFORNIA GEORGE DEUKMEJIAN,Governor CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD- CENTRAL VALLEY REGION 3201 S STREET Sr " SACRAMENTO,CALIFORNIA 958167090 PHONE: (916)4 4 5-0270 D (� QT/ O 5 January 1987 JAN ;?Q7 ENVIROMENTAL HEALTH FERMIT/SERVICES Mr. Fran Forkas Water and Wastewater Superintendent City of Lodi 221 West Pine Street Lodi , CA 95241-1910 GROUND WATER QUALITY IN LODI, SAN JOAQUIN COUNTY Thank you for your letter of 19 December 1986. We share your concern for Lodi 's drinking water supply. As you know, we are working on many ground water problems in San Joaquin County including several resulting from leaking under- ground tanks. This is a fairly new program and notification procedures were not clearly defined. The San Joaquin Local Health District (District) has the lead for implementation of this program in the county. The Regional Board becomes involved only after a ground water problem has been confirmed. With respect to the findings of contaminated ground water at the Geweke Ford site in Lodi , we apologize that the City was not made aware of the specific levels of contaminants at an earlier date. We understand that District staff has discussed various underground tank problem sites during the last year with you to keep you informed. However, no formal notification took place. My staff met with the District and the Department of Health Services (DHS) to better define notification procedures with respect to findings of ground water contamination. Our standard procedure is that the Board informs the DHS and the District of new contamination findings as soon as possible. The health agencies then are responsible for informing water users or purveyors as to the suit- ability of water for drinking and the need for additional testing to confirm the initial analysis. We agreed that this procedure will also apply to the under- ground tank program. In addition, Proposition 65 outlines additional notifica- tion procedures for the involved agencies. These measures should prevent delays in reporting in the future. As you requested, a list of known and potential ground water contamination sites is enclosed for your information. The District will send you a more detailed list of underground tank sites with potential ground water problems. We will keep the City informed on the progress of cleanup of the Geweke Ford site and on any other site that may impact Lodi 's drinking water supply.