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Phase I Environmental Site Assessment Neighborhood G Page 12 • During the Site records review and interviews, the past use of agricultural chemicals on the Site was identified. The historical application of pesticides to agricultural land at the Site is considered to be a de minimis condition by Condor. Much of the Central Valley was, at one time, used for agricultural use, and hence the presence of pesticide residues is anticipated in the soils. This de minimis condition designation for pesticide use pertains only to areas of the Site on which pesticides have historically been applied for agricultural purposes. Areas of the Site that may have been used for pesticide mixing may potentially be characterized by residual pesticide concentrations high enough to warrant a recognized environmental condition designation. Condor does not consider the Trimark Communities property, located at 18621 Mountain House Parkway, to constitute a recognized environmental condition. Review of local agency records failed to produce any further information to corroborate or elaborate upon the placement of the location on the HAZNET database. Additionally, the location is over '/4 mile away from the Site. Therefore, Condor believes the location poses no material threat of release of hazardous substances to the Site. All opinions expressed herein are based upon the evidence reviewed and the assumptions made during the assessment. 10.0 CONCLUSIONS Condor has performed a Phase I ESA, in conformance with the scope and limitations of ASTM Practice E 1527-00, of 20001 and 20043 Mountain House Parkway, and of the two parcels located south of Byron Road and west of Mountain House Parkway, in Tracy, California, the Site. Any exceptions to, or deletions from, this practice are noted in Section 1 I of this report. This assessment has revealed no recognized environmental conditions on the Site. 11.0 DEVIATIONS This Phase 1 ESA was performed by Condor according to the scope and limitations of ASTM Practice E 1527-00, except for the following: • This assessment was conducted for only a portion of the parcel(s) indicated, not extending to the full legal property boundaries thereof. 12.0 REFERENCES SITE AND VICINITY GENERAL CHARACTERISTICS 1. Site reconnaissance CURRENT USES OF THE ADJOINING PROPERTIES 2. Site reconnaissance HISTORICAL USE INFORMATION ON ADJOINING PROPERTIES 3. Aerial photos provided by EDRO 4. Historical topographic maps provided by EDRO GENERAL SITE SETTING 5. USGS Clifton Court Forebay,California 7.5-minute topographic map(1978). 6. California Department of Conservation, Division of Mines and Geology: Geologic Map of the San Francisco-San Jose Quadrangle(1990). w %14 i41 COMM