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CONCLUSIONS AND RECOMMENDATIONS From visual observations, there is no surface contamination. The probability of subsurface contamination from pesticides can be considered low-to-medium, considering the environmental fate data and soil type. Groundwater testing for nitrate and DBCP will be performed next month to complete the requirements of the Soil Suitability Study. Therefore, at this point in time, no corrective action is required within the boundaries of the subject property. Although bottled water is consumed at the existing residence, we suggest the well water be tested for a Multi-residue screen consisting of analysis for Dinitroanaline, Triazine, Organochlorine and Organophosphates. This is a precautionary measure and in no way indicates or suggests these chemicals occur in the underlying groundwater. It is our opinion that contamination originating from the existing septic tank is unlikely. Contamination from a tank is usually dependent upon the age and type of tank construction material. The next time the tank is pumped out, the sewage contractor can check the integrity of the tank. Asbestos containing materials (ACM)testing from any portion of the existing buildings is outside the scope of this investigation. If the existing buildings are ever demolished, testing for ACMs should be done at that time. LIMITATIONS The purpose of this report is only to inform the Client and the San Joaquin County Environmental Health Department of the environmental conditions as they currently exist at the subject site and within the parameters established in the County Ordinances. Valley Ag Research does not assume responsibility for the discovery and elimination of environmental hazards. Compliance with submitted recommendations and/or suggestions in no way assures mitigation or elimination of environmental concerns. No statement can be made with scientific certainty regarding latent surface or subsurface conditions which may have originated on-site, or off-site from various sources. Valley Ag Research cannot represent the subject property, adjacent land or underlying groundwater free from environmental hazards. The possibility always exists for contaminants to be placed or migrate through the soil, surface water, groundwater or air at any point in time. Respectfully submitted, �sv r RON�£ti.T VALLEY AG WEARCH No. 04675 x Don Chesn , R.E.A. * Expires: •30 Registered Environmental/Assessor#4675 Agricultural Pest Control Advisor#6237 \ 5 Vafley Aa Ppearck