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Phase I Environmental Site Assessment <br /> Neighborhood E <br /> Page 14 <br /> pesticide use pertains only to areas of the Site on which pesticides have historically been applied for <br /> agricultural purposes. Areas of the Site that may have been used for pesticide mixing or locations of <br /> higher than average sedimentation rates, such as may exist in association with the ben-ned structures, may <br /> potentially be characterized by residual pesticide concentrations high enough to warrant a recognized <br /> environmental condition designation. All opinions expressed herein are based upon the evidence reviewed <br /> and the assumptions made during the assessment. <br /> 10.0 CONCLUSIONS <br /> Condor has performed a Phase I ESA in conformance with the scope and limitations of ASTM Practice E <br /> 1527-00 for 20001, 20043, 20501, and 20601 Mountain House Parkway, Tracy, California. Any <br /> exceptions to, or deletions from, this practice are noted in Section 11.0 of this report. This assessment has <br /> revealed evidence of one recognized environmental condition in connection with the Site: <br /> • One 500-gallon aboveground storage tank (AST) was identified on the Site. <br /> Concentrations of petroleum hydrocarbon constituents possibly stored in the AST on the Site could affect <br /> the groundwater and/or the soil in the area,which could be potentially hazardous to residents. <br /> 11.0 DEVIATIONS <br /> This Phase I ESA was performed by Condor according to the scope and limitations of ASTM Practice E <br /> 1527-00,except for the following: <br /> • This assessment was conducted for only a portion of the parcel(s) indicated, not extending to the full <br /> legal property boundaries thereof. <br /> 12.0 REFERENCES <br /> SITE AND VICINITY GENERAL CHARACTERISTICS <br /> 1. Site reconnaissance <br /> CURRENT USES OF THE ADJOINING PROPERTIES <br /> 2. Site reconnaissance <br /> HISTORICAL USE INFORMATION ON ADJOINING PROPERTIES <br /> 3. Aerial photos provided by EDR® <br /> 4. Historical topographic maps provided by EDR® <br /> GENERAL SITE SETTING <br /> 5. USGS Clifton Court Forebay,California 7.5-minute topographic map(1978). <br /> 6. California Department of Conservation, Division of Mines and Geology: Geologic Map of the San <br /> Francisco-San Jose Quadrangle(1990). <br /> 7. Soil Survey of San Joaquin County, California. United States Department of Agriculture (October, <br /> 1992). <br /> 8. Aerial photos from EDRO <br /> INTERVIEWS <br /> 9. Mr. Frank Arnaudo, former owner of the Site properties. <br /> '%U6 <br /> a CONDOR <br />