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The pesticides/chemicals used at this site were applied to the vineyard for agricultural production. The vineyard has historically been treated with Carbaryl, Dicamba, Methomyl, Simazine, Zinc Phosphide, MCPA Dimethylamine Salt, 2, 4-db, z, 4-5 amine, Paraquat Dichloride, MCPA and Difethialone. (See permit No. 39-26-3904333, 39-25-3904333, 39-24-3904333, 39-23-3904333 and Permit No. 39-22- 3904333). (See Appendix) 3.3 Description of All Current On-Site Potential and/or Known Above and Below Ground Sources of Contamination Identified at the Project Site: Presently, there are no underground storage tanks on the property and visual inspection did not produce any evidence of buried containers, as well as no odors that would be associated with buried chemical tanks. There are no above ground fuel tanks on the site. San Joaquin County Environmental Health Departments public records indicated there were no fuel tanks on site. On-site water dissipates through either percolation or evaporation. 3.4 Description of All Past Off-Site Potential and/or Known Above and Below Ground Sources of Contamination Identified In the Area of the Project Site: Past off-site potential for contamination is moderate. The subject parcel is located in an agricultural and commercial neighborhood. The land use has historically been agricultural and residential and has not changed significantly. There was a diesel spill which contaminated soils at Victor Meats. However, it was properly cleaned under regulation by October 5, 2005. Victor Meats is approximately 750 feet northwest of this site. There was also a diesel spill approximately 1,500 feet southeast of the project site across the Mokelumne River near the corner of Turner Road and Cluff Avenue. The clean up for this spill was completed under regulation on June 14, 1993. 3.5 Description of all Present Off-Site Potential and/or Known Above and Below Ground Sources of Contamination Identified in the Area of the Project Site: Present off-site potential for contamination is moderate. (See Appendix for case studies.) 4.0 EVALUATION OF PAST AND CURRENT SOURCES OF CONTAMINATION IDENTIFIED AT OR NEAR THE SITE AND RECOMMENDATIONS FOR FURTHER ACTION: 4.1 Evaluation of each potential and/or known source of contamination identified for any_real and/or potential threat to human health and the environment: The depth to ground water in this area is approximately 60f feet. Due to this depth, any pesticides, insecticides, and fertilizers used on the property in the past or present would have a minimal impact to the ground water. The site is served by a private well. 5.0 CONCLUSIONS AND RECOMMENDATIONS SECTION: 5.1 Discussion of the Above Evaluation: There are no chemical containers or fuel storage tanks on this site, however there have been contaminants spilled near the site which have been properly remediated, thus the potential for contamination is moderate. There are multiple pesticides, insecticides, and fertilizers used on the site. No mitigation measures are recommended. 2