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L <br /> L MACHADO PROPERTY Page 2 <br /> WKA No. 6078.02 <br /> 1 L November 1, 2004 <br /> L • review of the U.S. Department of Agriculture, Soil Conservation Service Soil Survey of San <br /> Joaquin County for historic crop cultivation trends for the subject property and vicinity, <br /> Lprior to existing site configuration, as well as inquiry with the Ag Commissioner <br /> • discussion of existing or proposed municipal infrastructure for the property and vicinity, <br /> Lincluding potable water,wastewater and stormwater provisions, as required by the ASTM <br /> standard <br /> L • a literature-based discussion of the low likelihood for radon to be problematic at the <br /> property <br /> • examination of stereoscopic aerial photographs of the property taken over the last 40 years, <br /> as well as review of historic USGS topographic maps and archived building records of the <br /> property(as available),in order to develop a reasonably continuous site history over the past <br /> 50 years, as required by the ASTM standard <br /> an evaluation of local and regional geological and groundwater conditions, including <br /> L historical depths and flow direction(Plate 4) <br /> 1 • a review of federal, state and county regulatory agency lists indicating any known instances <br /> `' of hazardous materials contamination and registered underground and aboveground storage <br /> tanks (USTs/ASTs) on or near the property(Plate 5) <br /> L <br /> based on the outcome of the database search described in the preceding bullet item,review <br /> r. <br /> of specific regulatory agency files for identified contaminated sites in order to evaluate <br /> whether the listed sites are hazardous materials threats to the subject property <br /> • color photography of the property(Plate 6). <br /> L <br /> L <br /> L <br /> `O% <br /> L <br /> WALLACE•KUHL <br /> &ASSOCIATES INC. <br />