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Ordram. Common name: Molinate. Half-life in environment: Air: calculated lifetime of 6 <br /> hrs. Surface water: half-life of 84 hrs from dissipation from flooded rice fields. <br /> Soil: persistence of 2 months in soil, half-life is approximately 3 wks in moist <br /> loam soils. Selected field half-life of 21 d. <br /> Furadan. Common name: Carbofuran. Half-lives in the environment: Air: 4.6 hrs Soil: <br /> persistence of less than one month with selected fields at greater than one month. <br /> Surface water: avg half-life in rice paddy water was 57 hrs, but pH dependant. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> From visual observations,there is no surface contamination other than the referenced fuel and oil <br /> soil staining. The probability of subsurface contamination from pesticides can be considered <br /> low-to-medium, considering the environmental fate data and soil type. Groundwater testing for <br /> nitrate and DBCP must be performed at the time of purchase of any of the proposed Parcels. <br /> This will be mandated to complete the requirements of a Soil Suitability Study. <br /> We suggest the water from the existing residence and future wells that may be drilled on any of <br /> the four parcels be tested for a Multi-residue screen consisting of analysis for Dinitroanaline, <br /> Triazine, Organochlorine and Organophosphates. This is a precautionary measure and does not <br /> indicate these chemicals occur in the underlying groundwater. <br /> It is our opinion that contamination originating from the existing septic tank is unlikely. <br /> Contamination is usually dependent upon the age and type of tank construction material. The <br /> next time the tank is pumped out,the sewage contractor should check the integrity of the tank. <br /> Considering the 1.) depth to groundwater, 2.)the underlying high clay content soil strata and 3.) <br /> the low density housing in the area,the probability of pathogen and/or nitrate contamination <br /> from the on-site and surrounding septic systems is unlikely. <br /> Asbestos containing materials (ACM)testing from any portion of the existing buildings is <br /> outside the scope of this investigation. If the existing buildings are ever demolished, testing for <br /> ACMs should be done at that time. <br /> 4 <br /> Q-11ty Coo.w Inspection <br />