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4 <br /> L <br /> LNovember 15, 2004 <br /> NOA Project Number: E04123A <br /> i 3.3 Current On-Site Sources of Contamination <br /> L <br /> No above-or below-ground on-site potential or known sources of contamination were identified from <br /> Lcurrent uses of the site, except for the following: <br /> • An above-ground fuel storage tank was observed near the house. <br /> Because of current agricultural use, the potential exists for petroleum and chemical <br /> contamination from vehicle maintenance and fueling,as well as chemical mixing,storage, and <br /> application. <br /> L <br /> i An industrial drum was observed in the center of the property containing unknown liquid. <br /> LAn industrial drum,possibly a fuel dispenser,was observed behind the barn. <br /> • Empty,open,herbicide and pesticide containers were observed near the greenhouse,indicating <br /> L agricultural chemical use. <br /> 3.4 Past Off-Site Potential Sources of Contamination <br /> L <br /> No above-or below-ground potential or known sources of contamination to the subject property were <br /> identified from past uses of surrounding properties, except for the following: <br /> 6. <br /> • A chromium-6 contamination plume has been identified in the groundwater of the area. <br /> r. 3.5 Current Off-Site Sources of Contamination <br /> No above-or below-ground potential or known sources of contamination to the subject property were <br /> �. identified from current uses of the surrounding properties, except for the following: <br /> • Spilled machine oil and open chemical containers were observed inside a barn adjacent to the <br /> L subject property to the west. <br /> • An open bucket of machine oil was observed against the eastern wall of the barn adjacent to the <br /> Y~ subject property to the west. <br /> 4.0 EVALUATION OF IDENTIFIED CONTAMINATION SOURCES <br /> L <br /> The potential for lead-based paints or asbestos-containing materials to be present on the property was <br /> not fully evaluated because the interiors of the residential areas were not inspected. <br /> L <br /> L <br /> 9 <br />