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6.0 REGULATORY AGENCY LIST REVIEW AND FILE RESEARCH SECOR reviewed regulatory databases maintained by various federal and state environmental agencies. which were provided by Environmental Data Resources, Inc. (EDR) of Milford, Connecticut. A copy of the complete database listings obtained from EDR and a map showing the locations of listed sites relative to the subject property are presented in Appendix B. According to EDR, the information from the various federal and state agencies is obtained and updated regularly per ASTM standards. Dates of the individual databases and lists utilized by EDR are included in the report in Appendix B. The purpose of the review was to identify reported listings for the subject property or other properties within a one-half-mile radius surrounding the subject property. Databases reviewed included federal and state lists of known or suspected contaminated sites, lists of known handlers or generators of hazardous waste, lists of known waste disposal facilities, and lists of permitted UST's. The EDR document lists a number of sites as "orphan" sites. EDR was unable to confirm the locations of these sites, or assess whether they were located within the designated search radius. SECOR independently reviewed the locations of these "orphan" sites, to the extent possible, using various maps and our knowledge of the subject property area. Any of the "orphan" sites determined to be within the designated search radius are included in the listings and discussions in the following sections. 6.1 FEDERAL AND STATE REGULATORY AGENCIES 6.1.1 EPA National Priority List The EPA National Priorities List (NPL) of hazardous waste sites was reviewed. The NPL includes uncontrolled or abandoned hazardous waste sites that have been assigned the highest risk, based on the EPA's Hazard Ranking System, and that have been targeted for long-term remediation under the federal Superfund program. The NPL was reviewed for listed sites within a one-mile radius of the subject property. 6.1.2 EPA CERCLIS Inventory The EPA Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) inventory of potential hazardous waste sites under investigation was reviewed. This list includes sites that are, or have previously been, evaluated for possible inclusion on the NPL. The CERCLIS inventory was reviewed for listed sites within a one-half-mile radius of the subject property. The CERCLIS database includes a subset of sites that have been assigned No Further Remedial Action Planned (NFRAP) status. These are sites where, following an initial investigation, no contamination was found, contamination was removed quickly, or the contamination was not serious enough to require NPL consideration. Final ESA Report-30096.009-Tracy CA.doc 16 SECOR International Incorporated April 14,2005