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Surface and Subsurface Contamination Report 1��rr�con 6671 & 7101 E. Highway 12 ■ Lodi, California September 22, 2015 ■Terracon Project No. NA157033 According to the Agricultural Commissioner, when a chemical for which a permit has been issued is applied to a field, the use report must be filed with the Agricultural Commissioner. The use reports do not include chemicals for which a permit is not required.9 The EPA's Restricted Use Products (RUP) Report 10 was searched for the chemicals reportedly applied to the site. Based on this source, it appears that, of the agricultural chemicals reportedly applied to the site, only those containing abamectin and paraquat dichloride are RUPs. The U.C. Davis Extension Toxicology Network (EXTOXNET) web site" and the Pesticide Management Education Program (PMEP) at Cornell University web site 12 were consulted for additional information on these chemicals. Abamectin According to EXTOXNET, Abamectin is a general Use Pesticide (GUP), classified as a toxicity class IV, practically nontoxic. Abamectin is insecticidal/miticidal compound derived from the soil bacterium Streptomyces avermitilis. Abamectin is highly toxic to insects and fish and may be highly toxic to mammals. Abamectin undergoes rapid photo degradation with half-lives of seven days to 60 days in soil dependent on sun exposure and 12 hours in water. Paraquat Dichloride 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. 3.1.5 Water Supply and Sewage Disposal System .Two agricultural well are located on the site. Terracon inquired of the owner and manager, as to whether a domestic well services the residence located on the site; however, a response had ceived by the completion of the report. Well and septic permit files were requested from the in copies of permits for any water wells or p fenkS nth . On septic permit O8g-383> s provided from the EHD for the address o 71 E. Hwy 12. a perm' 'adicaY®da s is system is located east of the modular home. There were no well permits provided from the EHD. A copy of the permit is included in Appendix E. 3.1.6 Department of Oil. Gas. and Geothermal Resources The California Department of Oil, Gas, and Geothermal Resources (DOGGR) online well finder13 was reviewed for evidence of oil or gas wells on or in the vicinity of the site. No wells are depicted within one-quarter mile of the site. 9 Personal Communication with Hazel Gallego, November 28, 2005. 10 U.S. Environmental Protection Agency(EPA),August 27, 2015, Restricted Use Products(RUP) Report. " University of California, Davis,Extension Toxicology Network(EXTOXNET), http://extoxnet.orst.edu/ghindex.html z Cornell University, Pesticide Management Education Program, http://pmep.cce.comell.edu/ 3 California Dept. of Oil,Gas,and Geothermal Resources, http://maps conservation cigoy/doggr/index html#close Responsive■ Resourceful ■ Reliable 6