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Page.1 Q _ West Lauffer Road Property February 16, 2006 Job No. 2836-001 "Orphan" Sites /EDR's data includes a number of listed sites in San Joaquin County that EDR could not locate due to apparent insufficient address information. Our review of EDR's "Orphan Summary" revealed no such sites relevant to the above criteria and cited ASTM guidelines. FJ CONCLUSIONS /VWe have performed a Phase I Environmental Site Assessment of the subject property in conformance with the scope and limitations of ASTM Practice E 1527. Any exceptions to, or deletions from this F practice are described in the Exceptions and Limitations section of this report. This assessment has it revealed no evidence of recognized environmental conditions in connection with the property, except for the following: �• An approximate 500-gallon above-ground diesel fuel tank with secondary containment is located within the southwesterly residential area; our observations of this tank area revealed petroleum hydrocarbon staining to surface soils beneath the tank's fill port just outside the tank's secondary containment structure. It would appear that the stained soils extend more than four inches = beneath ground surfaces. Limited screening sampling/testinggof soils in this tank area is recommended. _ �• In our experience, surface soils on properties.that have supported many years of orchard farming have the potential to contain elevated concentrations of agricultural chemicals such as lead- arsenate and persistent organochlorinated pesticides -in surface soils. Given this, it is recommended that limited screening sampling and laboratory analysis of near surface soils be performed within the northwest portion of the property that has historically supported an orchard. - During our recent reconnaissance we observed two domestic water wells on the subject property; if qV any planned redevelopment of the property does not include the use of these wells, they should be tT abandoned in accordance with State and County regulations. Several of the current structures associated with the on-site residences were reportedly constructed prior to 1975. Due to the age of the on-site buildings, it is possible that asbestos containing building materials are present. An asbestos survey would be required prior to any significant renovation or demolition _ activities. /Our research of government agency information indicates that there have been no reported contamination conditions of a sufficient magnitude or proximity considered threatening to the environmental integrity of the subject property. - STATEMENT OF QUALIFICATIONS JlRaney Geotechnical, Inc. is a geotechnical and environmental engineering firm located in West _ Sacramento, California. The firm was founded in 1979; current professional staff includes licensed - engineers and geologists, environmental specialists, and a Certified Asbestos Consultant. The firm was involved in environmentally related geotechnical and hydrological studies as early as 1981, shortly after the enactment of the Superfund legislation. These early environmentally driven studies were performed for uranium and coal mining clients in the mountain west, and included regional geology, groundwater quality, soil chemistry, surface water hydrology, and geotechnical engineering. Underground tank r��