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F1 <br /> September 30, 2007 <br /> NOA Project Number: E07146A <br /> The method takes into account the development area, soil denitrification factor, rainfall volume, <br /> rainfall nitrate concentration,waste effluent quantity, and waste effluent nitrate concentration. The <br /> formula, assumptions and calculations used for the analysis are attached. The units of nitrate used in <br /> n the mass balance equation are nitrate-N,whose maximum drinking water contaminant level is 10 <br /> mg/L. <br /> Fj 2.0 CHEMICAL AND PHYSICAL PROPERTIES OF SOIL <br /> 2.1 Chemical and Physical Soil Properties <br /> For a discussion of on-site soil properties,refer to Section 5 of the SSS. <br /> F1 / 2.2 Mass Transport Soil Properties <br /> Layered soils and consistency of silty sediments will typically provide an added degree of protection <br /> between percolating effluent at the surface and shallow ground water aquifers. Soils of this type do <br /> not typically present a high risk of excessive mass transport of nitrate or other constituents of <br /> concern. <br /> 5 <br /> i <br /> F1 3.0 GROUND WATER ANALYSIS <br /> 1/3.1 Regional Ground Water <br /> A discussion of regional ground water,including depth to ground water and directional ground <br /> water gradient, is included in Section 4.1 of the SSS. No significant seasonal trends were evident <br /> from the maps consulted. <br /> !_f <br /> //3.2 Potential Ground Water Contamination Issues <br /> F1A discussion of issues related to potential ground water contamination is included in Section 4.2 of <br /> the SSS. <br /> ✓3.3 Current and Future On-Site Ground Water Uses <br /> Fj A description of the existing well on the site is included in Section 4.3 of the SSS. Ground water is <br /> currently used for residential purposes. Ground water will be used on site in the future for the wine <br /> tasting facility. <br /> ill <br /> 2 <br /> 4 <br />