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LFR Inc. <br /> 7.3.2 Department of Toxics Substance Control (DTSC).................................21 <br /> 7.3.3 San Joaquin County - Environmental Health Department ....................... 21 <br /> 7.3.4 San Joaquin County - Agricultural Commissioners Office....................... 21 <br /> 7.3.5 San Joaquin County - Planning and Building Departments ......................22 <br /> 7.3.6 California Division of Oil, Gas, and Geothermal Resources (DOGGR)....... 22 <br /> 8.0 SITE HISTORY.......................................................................................22 <br /> 8.1 Historical Records Review ................................................................... 22 <br /> 8.1.1 Historical Aerial Photographs.........................................................23 <br /> 8.1.2 Historical Sanborn Maps............................................................... 24 <br /> 8.1.3 Property Tax Files and Land Title Records ........................................24 <br /> 8.1.4 Historical City Directories............................................................. 24 <br /> 8.1.5 Historical Topographic Maps ......................................................... 24 <br /> 8.1.7 Summary of Historical Information...................................................25 <br /> 9.0 INTERVIEWS.........................................................................................26 <br /> 9.1 Interviews with Site Contacts ................................................................26 <br /> 9.2 Interviews with Local Government Officials .............................................. 26 <br /> 10.0 LIMITED SOIL SAMPLING................................................................ 26 <br /> 10.1 Analytical Results............................................................................. 27 <br /> ll.OFINDINGS.............................................................................................28 <br /> 11.1 Known or Suspect RECs...............................................................28 <br /> 11.2 Historical RECs .........................................................................29 <br /> 11.3 De Minimis Conditions ................................................................ 29 <br /> 11.4 Non-ASTM Environmental Issues ...................................................29 <br /> 12.0 O PINION...............................................................................................29 <br /> 13.00ONCLUSIONS...................................................................................... 29 <br /> 14.ODEVIATIONSIDATA GAPS....................................................................... 30 <br /> 15.OADDITIONAL SERVICES ......................................................................... 30 <br /> 003-09246-00 Lo.rSacr nroRoad 1LHo s Phase 1 ESA.1h Page fii <br />