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September 26,2003 NOA ENVIRONMENTAL PROJECT NUMBER:LE03-295 NOA reviewed the Underground Storage Tank List and the"Site Mitigation"List at the EHD. There were no (0) properties under the names of Stan Robertson or K & H Farms on the Underground Storage Tank list. One address was found on the "Site Mitigation" list on Linne Road. The Elissa Garay Property at 1660 Linne Road was found on the lids address was not found during the site reconnaissance. The case is listed as being closed.µ C. San Joaquin County Office of Emergency Services Inquiries were made with the San Joaquin County Office of Emergency Services (OES) in an attempt to determine if there are any files present at that agency which note any hazardous materials releases or spills on the subject property or in the vicinity of the subject property. According to staff of the OES, there are no files for the addresses of 1801 and 1999 West Linne Road. D. San Joaquin County Agricultural Commissioner The San Joaquin County Agricultural Commissioner's Office was contacted in an effort to determine whether the subject property had been used in the past for agricultural purposes, and whether agricultural chemicals had been used on the subject property. According to Ms. Hazel Gallego of the Commissioner's office, no agricultural pesticide use records we po4Dipid related to the subject property under the name of Mr. Stan Robertson and K&H A!the The fact that this property is"�: mainly used for farm production and the answers provide oestionnaire suggest that there as faulty information on this subject. Three sites had Surface/Subsurface Contamination Reports performed concurrently for the same client and in the same area. The three sites were searched for the same records using the same parameters. Only one site(NE of Banta&Linne Roads)was reported to have had Use Reports. The search performed on that property yielded an exhaustive list of chemicals applied to that property. Following are the four highly toxic chemicals applied to the NE of Banta&Linne Roads site. They are Methomyl,Paraquat Dichloride,Methyl Parathion and 2,4-D. In addition,Xylene range aromatic solvent, seed and petroleum oil have been applied to that property, as reported by the San Joaquin County Agricultural Commissioner's Office. Methomyl has been applied to the property in all of the past five years with the exception of 2001. The reported half-life of Methomyl is approximately 14 days. Paraquat Dichloride has been applied to the subject property in the years of 1999 and 2000. Paraquat Dichloride has a reported half-life of greater than 1,000 days, representing the most persistent highly toxic chemical applied to the subject property. Methyl Parathion was applied to the subject property in the years of 2000, 2001 and 2002. Methyl Parathion has a half-life between 1 and 30 days. 2,4-D was applied to the property in 2002 and has a half-life of less than 7 days. 2,4-D is only considered highly toxic when in contact with the eyes.