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Scannavino Property Page 10 of 16 Our Project Number: LES080581 November 25, 2008 bromide is moderately persistent in the soil environment, with a field half-life of between 30 and 60 days; a representative half-life is estimated to be about 55 days. 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 One domestic well and one agricultural well are located on the subject property. The EHD well and septic permit files were searched on October 28, 2008 in an effort to obtain copies of permits for any water wells or septic tanks on the subject property; no permits were found. According to Steven Shih" of that office, the permits for the subject property were out of the office for scanning purposes at the time of our visit. However, he did state that a 2004 monitoring well permit and a 2002 septic repair permit were on file for the subject property. Our office obtained copies of sanitation and pump repair permits at a later date which have been included in Appendix E of this report. Because a monitoring well permit was filed in 2004 for the subject property, our office contacted EHD project supervisor Mr. Mike Inferno regarding additional information and current status of the monitoring well. According to Mr. Inferno, a file was not available at the San Joaquin County Environmental Health Department for review; however, he indicated Mr. Tim O'Brien at the California Regional Water Quality Control Board (CRWQCB) had issued a monitoring well requirement for this property. Our office contacted Mr. O'Brien who referred us to Mr. Brendan Kenny at the CRWQCB. Mr. Kenny verified a monitoring well was installed on the subject property for Cherokee Freight Lines (CFL), whose main office is located north of the subject property along Cherokee Road. Consequently, our office reviewed the CFL file on November 22, 2008 at the CRWQCB offices. According to the file, the CRWQCB issued a revised Monitoring and Reporting Program (MRP) 98-077 for CFL which applies treated water from their truck wash facility to a land application site. CFL reportedly transports food products including chocolate, molasses, fruit juice and wine in their tanker trucks. The waste water from the truck rinse is treated at the truck wash facility and transported to the application area where it is stored in holding tanks and then blended with the groundwater. The treated water is monitored and used for irrigating the orchards in the application area. The subject property is located within this application area, as well as the adjacent properties to the north, south and east of the subject property. According to a report entitled "Monitor Well Installation Report for the Cherokee Freight Lines Land Application Site," dated November 2004 by Jacobson Helgoth Consultants, a monitoring " Personal Communication October 28, 2008. 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02008 Neil O.Anderson&Associates,Inc.