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Page 6 %.- 1%-/ Approximate 80-Acre Property September 25, 2001 Job No. 1107-013 Radon Radon is a naturally occurring radioactive gas. Radon results from the natural decay of uranium. The primary route of exposure to radon is via inhalation. In an open environment, radon readily dissipates. Radon levels of less than 4.0 pCi/L may produce some increase in the risk of occurrence of lung cancer; however, further reduction of such concentrations may be difficult or impossible to achieve. Available information indicates that of the 20 households studied in San Joaquin County, radon concentrations in the first floor levels averaged 2.53 pCi/L; basement levels averaged 2.05 pCi/L. Asbestos The last ban of the manufacture of a friable (ACBM) asbestos-containing building material was in 1978; the presence of ACBM is generally only considered a significant concern in buildings constructed before 1980. The on-site buildings were apparently constructed prior to 1953. Lead-Based Paint The EPA considers lead-based paints to be a source of lead exposure to children. Lead-based paint normally becomes a public health issue when painted surfaces (especially in older residential structures) become significantly damaged or deteriorated; we observed no such conditions during our recent reconnaissance of the property. The sampling of potential lead-based paint has been outside the scope of this study. Utilities Natural Gas/Electricity The Pacific Gas and Electric Company(PG&E)provides electric service to the general site vicinity. We area not aware of any natural gas service to the area. Sewage Disposal Sewage for the on-site residence discharges to a septic system on the property. We are not aware of any problems associated with the septic system. Drinking Water Drinking water in the site is supplied by an on-site water well. We were not able to obtain specifics (i.e. construction, screened interval,depth, etc.) regarding the water well. PRESENT ADJACENT SITE USE The subject property is located within a historical agricultural and rural residential area southeasterly of the City of Lodi in San Joaquin County, California. The approximate 80-acre property is generally bounded by East Harney Lane to the north, and by agricultural land and vacant pasture to the east, west, and south. A rural residence and large pond were observed westerly and adjacent to the northwest corner of the property. Vacant dry farmland is apparent northerly of the property across Harney Lane. Our reconnaissance identified no significant environmental concerns or conditions with respect to adjacent or nearby properties.