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� y 14 April 2004 AGE-NC Project No.04-1143 Page 11 of 17 March 2000 PUR: Aerial Application LeafAct 80B Bu„f er Spreader Application (1 gallon, 0.20 pint per acre) - Lorsban. (4E) Dursban (chlorpyrifos): Application (10 gallons, 2.00 pint per acre) - January 2000 PUR: Gramoxone.Extra(paraquat):Application(15 gallons,3.0 pints per acre).Paraquat is a highly toxic compound in EPA toxicity class I. Paraquat is a quaternary nitrogen herbicide widely used for broadleaf weed control.It is a quick-acting,nonselective compound,that destroys green plant tissue on contact and by translocation within the plant. It has been employed for killing marijuana in the U.S. and in Mexico. It is also used as a crop desiccant and defoliant, and as an aquatic herbicide. Diuron is highly toxic via ingestion. It is not considered to be teratogenic at expected doses; mutagenic or carcinogenic effects are unclear. Paraquat is highly persistent in the soil environment, with reported field half-lives of greater than 1000 days. The reported half-life for paraquat in one study ranged from 16 months (aerobic laboratory conditions)to 13 years(field study). Ultraviolet light,sunlight, and soil microorganisms can degrade paraquat to products which are less toxic than the parent compound.The strong affinity for adsorption by soil particles and organic matter may limit the bioavailability of paraquat to plants, earthworms, and microorganisms. The bound residues may persist indefinitely and can be transported in runoff with the sediment. Paraquat is not significantly mobile in most soils. That which does not become associated with soil particles can be decomposed to a nontoxic end product by soil bacteria. Thus,paraquat does not present a high risk of groundwater contamination. Of 721 _ groundwater samples analyzed, only one contained paraquat, at a concentration of 20 mg/L. VELPAR (Hexazinone): Application (20 pounds, 0.50 pounds per acre) _ DIREX. (80DF) (diuron): Application (15 gallons, 3 pints per acre) CMR Herbicide Activator: Application (5 gallons, 1 pint per acre) 6.1.3. Regulatory Agency Search The SJCEHD files records by address; the subject property has no address of record. Advanced Geo Environmental,Inc.