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o. <br /> Department of Toxic Substances Control <br /> A <br /> Edwin F. Lowry, Director <br /> 8810 Cal Center Drive, 2nd Floor <br /> Winston H. Hickox Sacramento, California 95826-3200 Gray Davis <br /> Agency Secretary Governor <br /> California Environmental <br /> Protection Agency <br /> MEMORANDUM <br /> TO: Michael Vivas, P.E. <br /> Hazardous Substances Engineer <br /> Northern California — Central Cleanup Operations <br /> FROM: Mellan Songco —`� Lam' <br /> Associate Industrial Hygienist <br /> Industrial Hygiene and Field Safety Section (IHFSS) <br /> Human and Ecological Risk Division (HERD) <br /> DATE: July 11, 2002 <br /> SUBJECT: CITY OF LODI AREA OF CONTAMINATION <br /> Lodi, California <br /> PCA Code: 11050 Site Number: 100561-00 <br /> BACKGROUND <br /> On June 25, 2002, the Northern California — Central Cleanup Operations in Sacramento <br /> requested IHFSS to review the revised health and safety plan for the Initial Site <br /> Investigation Workplan for the City of Lodi Area of Contamination in Lodi, California. <br /> The workplan outlines a proposed investigation of soil and groundwater-quality <br /> conditions in the area of the Lodi Groundwater Plume (Site) which is located within an <br /> area known as the Lodi Area of Contamination. <br /> In early 1989, the City of Lodi detected tetrachloroethylene (PCE) and trichloroethylene <br /> (TCE) in the groundwater beneath parts of the City of Lodi. The City of Lodi determined <br /> that the levels of PCE and TCE were above the California Maximum Containment <br /> Levels (MCLS) in two municipal supply wells. Further investigation of the downtown <br /> area of Lodi resulted in the identification of 43 potential solvent sources within the study <br /> area. The results indicated the presence of a large area of contamination, which was <br /> named the Lodi Area of Contamination. <br /> The nearest day care centers, schools, nursing homes, and hospitals are less than 1 <br /> mile from or are within the boundaries of the Site. <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs, see our Web-site at www.dtsc.ca.gov. <br /> ® Printed on Recycled Paper <br />