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2,44) AMINE. Common name: 2,4-Dichlorophenoxyacetic acid. Half-lives in th74�809-environment: Air: 1.8-18 hrs. Surface water: 48-96 h. Groundwat 4320 h. Soil: selected field half-life of 4.0 d. Phytolysis half-life of 2-4 d. Fertilizers are applied through drip irrigation fertigation techniques, with the proper controls for backflow prevention. Fertigation allows for an equal distribution of nitrogen, phosphorous and potassium(NPK) for almond tree uptake,thus preventing excessive leaching past the root zone. CONCLUSIONS AND RECOMMENDATIONS From visual observations,there is no surface contamination. The probability of subsurface contamination from pesticides can be considered low-to-nonexistent, considering the environmental fate data and soil type. The soil type is predominately a silty sand and the biological activity would be lower than a clay soil, but the aerobic environment of the sandy soil would promote degradation and decomposition of organic agrichemicals. Groundwater testing for nitrate and DBCP have been performed to complete the requirements of the Soil Suitability Study. The nitrate concentration in the domestic well is a comparatively high 41 ppm; however, considering the length of time the well has been in service and the sandy nature of the soil,this nitrate concentration would be expected. Both pesticides DBCP and EDB were non-detect. Therefore, at this point in time, no corrective action is required within the boundaries of the subject property. We do not recommend the well water be tested for a multi-residue pesticide screen consisting of analysis for Dinitroanaline, Triazine, Organochlorine and Organophosphates. The subject property is outside of delineated areas in which all new wells must have a grout seal to 200 feet. Bottled water should be consumed at the subject residence,particularly if infants will be in the home. It is our opinion that contamination originating from the existing septic tank and leachfield is highly unlikely since they can be considered cross gradient to the groundwater directional flow. 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 its integrity. The density of septic systems in the surrounding area can also be considered low. The number of systems is one of the prime factors for contamination of the underlying groundwater. 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. Naffq Ag?research