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F ources of current observable above-ground contamination exist to the soil from the two e-ground fuel storage tanks or from the waste oil storage tank. Subsurface amination may be possible from the referenced agricultural nitrogen fertilization ces. The on-site septic tank/leachfields and surrounding leachfields may be considered ave a very slight impact due to sparse density. The referenced electrical transformers adjacent to the west property border, as illustrated in the attached photographs, probably do not contain polychloride biphenyls (PCBs) based upon their age. If there was a leak or explosion, it would be the responsibility of the transformer owner to mitigate contamination. § 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 that could impact the project site includes: Information conveyed by the February 9, 2006 Envisions Program Documents illustrates no listings on, or in proximity to the subject property. The two closest Leaking Underground Fuel Tanks (LUFTs) are approximately 1.5 miles to the north of the property based upon the Geotracker data. The distances involved make it virtually impossible for these sites to impact the subject property, and two of the cases have been closed. Agricultural spray drift (non-target) from the on-site and nearest agricultural production land affecting the property could be a possibility, since agricultural production occurs primarily to the west and east of the property. Agricultural pesticide aerial applications by helicopter to the property cropland consist of Pyrethroids which are environmentally soft, and ground applications of herbicides such as Round-up. According to the Western Fertilizer Handbook, the currently planted crop of oats require 115 pounds of nitrogen per growing season. A second crop of tomatoes requires 180 units, for a total of 295 pounds of nitrogen needed. One hundred units (pounds per acre) of urea are applied to the oats. Some nitrogen make-up is from horse manure at 102 pounds of nitrogen for each horse. This totals 2,550 pounds of nitrogen per year for 25 horses, or 2,550 pounds -41 acres = 62 units. Therefore, without additional nitrogen, there is a nitrogen deficiency within the cropland soils. The science of pesticide residues in soil, air, surface water and groundwater is extremely complex and variable. Environmental models that attempt to predict pesticide behavior and transport in the environment are beyond the scope of this investigation. As referenced below, although DDT was banned in 1972, its presence in San Joaquin Valley soils is indicative of its long half-life of 15.6 years. Consequently, there may be extremely small concentrations of DDT and its degradates in the subject property soils. Pesticides with long half-lives that may have been used or drifted onto the property decades ago, primarily DDT, may be of an extremely slight concern. Page-5- Chesney Consulting