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F <br /> SIONS AND RECOMMENDATIONS <br /> ervations, there is no surface contamination on the subject property. Therefore. <br /> this report, no corrective action is required within the boundaries of the subject <br /> propery. <br /> It is my professional opinion and judgment that the agrichemicals applied to the subject property <br /> pose an absolute minimal danger to human health and the environment. The probability of <br /> subsurface contamination from pesticides, or other types of agrichernicals that maXhave drifted, <br /> or,Wed on the property, can be considered low. This considers the environmental fate data found <br /> in ppen ix and for D1and its related compounds presented above,which would be the <br /> most likely_persistent agrichemical that is no longer used. The depth to groundwater of 5 feet <br /> would make impact from adverse constituents a possibility;however, given the high clay content <br /> and highly organic soil,the probability of groundwater impact declines substantially in <br /> comparison to these agrichemicals being used in sandy soils with a high groundwater table. The <br /> important issue with regard to agrichemical use on the subject property is the fact that there is no <br /> on-site agrichemical mixing. <br /> As referenced, business practices at Alpine Helicopters in the past, and at present are unknown. <br /> Impact to the underlying groundwater from agrichemicals or other adverse constituents may be a <br /> possibility, although this possibility exists for virtually any commercial facility. <br /> The probability for nitrate coatamination of Le,-underlying agnifets_originating-from—surrounding <br /> septic systems is extremely low due to the low density of systems in the study area. However, <br /> fertilizer applications and organic matter decomposition make the likelihood of high nitrate <br /> concentration in the water table and underlying aquifers comparatively high. <br /> The subject site is surrounded by properties that engage in production agriculture. Consequences <br /> of this surrounding land use include: dust,odors, insects,machinery, crop dusting aircraft, trucks, <br /> exhaust and other environmental effects that may be offensive to some people. <br /> Page -6- <br /> Chesnq Comq&ing <br />