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STANDARD PUBLIC ENVIRONMENTAL RECORD SOURCES County, State and Federal environmental records were reviewed for sites which may have impacted the subject property. The databases accessed did not indicate a problem or potential problem with the subject site. Environmental impact from facilities in a one mile radius to the subject site have been well-documented and consist primarily of the Tracy Army Defense Depot. This is an EPA Superfund Site and is in the process of being remediated. The Depot is downgradient from the subject property. Regarding groundwater under the property, it is conceivable that there may be groundwater impact, particularly from nitrate. Mr. Costa has owned the property since 1989. The prior owner was Mr. Haynes McLellan who owned the property since 1960 (approximately). Since the operation and ownership of the subject property is well documented for forty years, previous ownerships to Mr. McLellan's were not investigated. There are two primary sources of information which document and define past land use, although they can be difficult to interpret. The first is the use of aerial photographs. Aerial photographs of.the subject area in the 1970's from USDA Soil Maps indicate no buildings or development of any type on the subject property. The house, barn and other outbuildings located southwest of the subject site, south of Linne Road, is recognized on this map. The second source of information can be found on USGS maps. The 1968 map for this area also indicates no buildings or other type of development. INFORMATION FROM SITE RECONNAISSANCE AND INTERVIEWS The following information was obtained visually and/or through an interview with Mr. Manuel Costa: The subject property contains no underground or above ground storage tanks (USTs/ASTs) and there were no tanks during the time Mr. McLellan owned the property. As referenced, there is an on-site conventional septic system with a septic tank and leachfield area, which is denoted on the Tentative Map. No containers were noted on-site. All agrichemical mixing is done off-site and almost all applications are done aerially by a flying service. According to Mr. Costa, agrichemical applications are done professionally, correctly and accurately to the intended target with minimal drift. The subject property was surveyed for evidence which is indicative of surface and/or subsurface contamination: There is a transformer on the south side of Linne Road from the Costa residence; however, it appeared to be relatively new and probably docs not contain polychloride biphenyls (PCBs) laden oil. If a nearby transformer that contains PCBs were to leak or explode, it would be the responsibility of the transformer owner to mitigate environmental contamination. There Page -2- VaCCey A®Research