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i <br /> 1 , <br /> TreadweIERdlo <br /> • <br /> ' • Performing a field reconnaissance of the Site and immediate vicinity to observe existing <br /> conditions, <br /> • Evaluatingpotential onsite sources and u radient offsite sources <br /> r r� , <br /> ' • Evaluating the hydrogeologic conditions of the Site and surrounding area, and <br /> j • Preparing this report presenting our findings <br /> ' 1.2 Data Sources <br /> Records were obtained from the City of Tracy planning and building department files and the <br /> ' San Joaquin County Environmental Health Division (SJCEHD) environmental files The City of <br /> Tracy Fire Department was also contacted for environmental information The following <br /> ' information was obtained from Environmental Data Resources, Inc , (EDR) of Southport, <br /> Connecticut <br /> • Aerial photography including coverage for the years 1957, 1982, and 1993 (Appendix A), <br /> i <br /> ' • Local business Polk City Directory listings for 5-year intervals spanning 1959 through <br /> 2000 (Appendix B), <br /> • Sanborn fire insurance maps were searched but not available for the area, and <br /> • Government environmental records search (Appendix C) <br /> ' Individuals interviewed included representatives from the City of Tracy, former contractors <br /> associated with the Site and the widening of West Grant Line Road, environmental consultants, <br /> and Mr Tom Brenkwitz The individual names and information provided are documented in the <br /> text and reference section of this report, as appropriate Pertinent Site historical records from the <br /> ' City of Tracy files are included in Appendix D In addition, miscellaneous figures and tables for <br /> the potential offsite source areas from the SJCEHD files are included in Appendix E <br /> 1 <br /> Stte Assessment Report 2 21 May 2003 <br /> TREADWELL&ROLLO,INC <br />