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The second source of information used was the Geotracker System maintained by the State Water Resources Control Board. This System illustrates all underground fuel storage tanks and leaking underground storage tanks. The map found in Appendix D indicates there is a leaking underground storage tank one mile to the west of the site and three leaking tanks six miles to the east of the site. None of these leaking tanks could affect groundwater under the site due to the distances involved. The leaking tank to the west of the site can be considered downgradient, again due to groundwater directional flow. The third informational gathering method source is the Environmental Questionnaire found in Appendix C. This documents environmental information directly from the people most knowledgeable about site, namely Mr. Chavez and Mr. Dutra. These two gentlemen were also interviewed for completion of this Report. The fourth informational source for agricultural pesticide documentation and environmental fate data was obtained from the University of California at Davis and Oregon State University Extoxnet System. § 3.2 Description of all past on-site potential and/or known above and below ground sources of contamination identified at the project site include a concrete mixing pad where agrichemicals have been mixed in the past, and are currently mixed. However, Mr. Dutra has been extremely careful in not allowing mixed agrichemicals to spill onto the concrete pad and eventually onto the surrounding soil. Below ground contamination of the underlying aquifers from this point source cannot happen because there is an air gap between the introduction of water into the mix tank and agrichemical material. There has never been an above ground or underground fuel storage tank on the property for the length of time the Dutra's have owned the property. A tank trailer used to transport water is located west of the barn. Two existing septic tanks are on the property. Ultimately, there will be four septic tanks and leachfields on the entire property acreage of 39.52 acres, which can be considered a very low density with respect to potential nitrate impact. § 3.3 Description of all current on-site potential and/or known above ground and below ground sources of contamination identified at the project site would include the listed pesticides found on the Environmental Questionnaire that have been applied to the orchard. Environmental fate data shows that the half lives of the listed materials are comparatively short and moderately persistent within the soil environment. These materials pose a minor risk to human health and the environment. There are currently seven electrical transformers on the property; to the east, south, and west of the existing residential structure. They all appear to be relatively new, and consequently unlikely to contain polychloride biphenyls (PCBs). Although no indication was noted of external oil leakage, if there was a leak or explosion, it would be the responsibility of the transformer owner to mitigate environmental contamination. Page -4- Chesney Consulting