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The subject property was surveyed for evidence which is indicative of surface and/or subsurface contamination: The on-site transformer is approximately nine years old and should not contain polychloride biphenyls (PCBs). There was no evidence of solid waste disposal. The site was carefully inspected for environmental concerns originating from discolored, disturbed or subsided soils, stressed vegetation or unusual or noxious odors. None of these environmental indicators were present. No hazardous materials are stored in sheds and there was no indication or observations of spills, or other items associated with hazardous materials in or around the house. An important concern associated with the environmental assessment of properties in agricultural production is the issue of buried pesticide containers. It was an occasional practice to dispose of containers by this method many years ago. To detect these types of underground artifacts is difficult even with the use of ground penetrating radar or other types of non-intrusive, subsurface analyses. The land surface did not exhibit visual indicators for buried containers such as surfacing of product residue, soil mounding or soil depressions. It is usually only after a contaminant plume has impacted a domestic well that buried pesticide containers are discovered. The exact depth of the static groundwater is unknown since it has not been referenced on the Depth to Groundwater Map published by the Flood Control District. However, from previous studies, in addition to the existing on-site well being over 300 ft deep, the groundwater depth can be assumed to be at least 80 feet below grade. This is considered a deep groundwater elevation. Deep groundwater cannot be easily impacted from pesticides or nitrogen in the form of nitrates. This is particularly true when there are intervening layers of clay soil down to the static water table depth. From previous drilling procedures conducted by our firm directly to the north of the subject property, the soil profile to a depth of 25 feet consists of a silty clay soil with very fine sand. The groundwater directional flow normally follows the contour of the land surface; therefore, the gradient is in a northeast direction. Since the subject property has not been in agricultural production for several years, an evaluation of agrichemical residues as a nonpoint source of potential contamination was not performed. Any agrichemicals applied more than two years ago have long since decomposed. The science of pesticide residues in soil, air, surface water and groundwater is extremely complex and variable. Environmental models which attempt to predict pesticide behavior and transport in the environment are beyond the scope of this investigation. It has been clearly evident over the last four decades that the risk/benefit ratio regarding pesticides has been overwhelming benefit and comparatively low risk to the United States population and the environment, as a whole. 3 Vadey Ag Research