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FDDT. Common name:Agritan,Anofex,Azotox,et al. <br /> Half-lives in the environment: <br /> Air: 17.7-177 h. <br /> Surface water:73.9 h for a pond 1 m deep.Degradation half-life of about 10 yr-average from loss <br /> rates determined in Lake Michigan. <br /> Groundwater: 16 d to 31.3 yr. <br /> Sediment: 3 to 5 yr <br /> Soil: 2-15.6 yrs based on observed rates of biodegradation in aerobic soils under field conditions. Avg. <br /> half life of-12 yrs in 3 different soils for-50 ppm in soil.(conversion of p,p'-DDT to p,p'-DDE). <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization:Half-life of 3.7 d for water depth of 1 m,from soil w/h-1 of 578 h <br /> Oxidation:Photooxidation half-life of 168-8400 h in water, 17.7-177 h in air <br /> Hydrolysis: Estimated first-order half life of 22 yr <br /> Biodegradation:Aqueous aerobic half-life of 2-15.6 yrs <br /> DDE. Common name: DDE(p,p'-DDE;o,p'-DDE),product of DDT degradation. <br /> Half-lives in the environment: <br /> Air:Atmos.transformation lifetime est.to be< 1 d. <br /> Surface water: Hydrolytic half-life of >120 yr,est.half-life>300 d in lakes. <br /> Groundwater:N/A <br /> Sediment:N/A <br /> Soil:Field half life of 1000 d <br /> Biota: Elimination half-life of 340 d(rainbow trout),300 d for birds. <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization:N/A <br /> Oxidation:N/A <br /> Hydrolysis:>120 yr <br /> Biodegradation:N/A <br /> DDD. Common name:DDD,TDE(tetrachlorodiphenylethane),product of DDT deg. <br /> Half-lives in the environment: <br /> Air: 17.7-177 h <br /> Surface water: 2-15.6 yr. Groundwater: 1680-270,000 h based on anaerobic soil study data <br /> Sediment:N/A <br /> Soil:Field half life of 2-15.6 yrs based on observed rates of biodeg. of DDT <br /> Biota: 119 hr in mussels. <br /> Environmental Fate Rate Constants or Half-Lives: <br /> Volatilization:Aquatic approx. 1 mo. <br /> Oxidation:Aquatic half-life approx.22 yr <br /> Hydrolysis:half-life of 570 d @ pH 9 and 190 yr @ pH 5 <br /> Biodegradation:Aqueous aerobic half-life of 2-15.6 yr <br /> Agricultural pesticide application documentation is retained for all pesticide applications <br /> made to the property by the farmer, as required by law. Agrichemicals applied to the subject <br /> property are done by ground application by a custom applicator with mixing done offsite. No <br /> soil staining or containers were noted on the property. <br /> Available Environmental Fate Data for the two pesticides used on the property was obtained <br /> from the U.C. Davis and Oregon State University Extoxnet System. <br /> Page -5- <br /> Chesney Consulting <br />