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Thompson & Folger West Page 9 of 16 Our Project Number: LES080594 February 10, 2008 The EPA's Restricted Use Products (RUP) Report9 was searched for the chemicals reportedly applied to the subject property. Based on this source, it appears that, of the agricultural chemicals reportedly applied to the subject property, only those containing chlorpyrifos, fenpropathrin, paraquat dichloride and lambda-cyhalothrin are RUPs. The U.C. Davis Extension Toxicology Network (EXTOXNET) web site10 and the Pesticide Management Education Program (PMEP) at Cornell University web site11 were consulted for additional information on these chemicals. According to EXTOXNET, chlorpyrifos is toxicity class II - moderately toxic. The EPA has established a 24-hour reentry interval for crop areas treated with emulsifiable concentrate or wettable powder formulations of chlorpyrifos unless workers wear protective clothing. Products containing chlorpyrifos bear the Signal Word WARNING or CAUTION, depending on the toxicity of the formulation. According to EXTOXNET, lambda cyhalothrin is a synthetic pyrethroid insecticide and acaricide used to control a wide range of pests. It is moderately toxic in the technical form, but may be highly toxic via some routes in formulation. Lambda cyhalothrin is moderately persistent in the soil environment, with a field half-life close to 30 days in most soils. According to EXTOXNET, paraquat is a quaternary nitrogen herbicide classified as an RUP and a highly toxic compound in EPA toxicity class I. Many cases of illness and/or death have been reported in humans. The compound is moderately toxic to birds and many aquatic organisms. The chemical is highly persistent in the soil environment, with reported field half-lives of greater than 1000 days. Studies have shown the half life in water to be as fast as 13.1 hours and up to 23 weeks. According to the PMEP, fenpropathrin has a reported half- life of 33 to 34 days under aerobic soil conditions. "The end-use product (Danitol 2.4 EC Spray) has moderate to low acute oral, dermal, inhalation and eye/skin irritation toxicity... Because of the physical properties of fenpropathrin, ... it is unlikely that fenpropathrin or its metabolites can leach to potable groundwater." 3.1.5 Water Supply and Sewage Disposal System One agricultural well and one possible domestic well were observed on the subject property. The EHD well and septic permit files were searched on December 16, 2008 in an effort to obtain copies of permits for any water wells or septic tanks on the subject property; the following permits were found: 9 U.S. Environmental Protection Agency(EPA), June 2003, Restricted Use Products(RUP) Report. ra University of California, Davis, Extension Toxicology Network(EXTOXNET), http://extoxnet.orst.edu/ghindex.htmi Cornell University, Pesticide Management Education Program, http://pmep.cce.cornell.edu/ 902 Industrial Way•Lodi,CA 95240.209.367.3701 •Fax 209,369.4228 02009 Neil 0.Anderson&associates.lac.