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IV. CONCLUSIONS AND RECOMMENDATIONS <br /> NLS§4.1. The nitrate loading calculations show the effluent from the proposed project will <br /> theoretically possess a nitrate-nitrogen concentration well below the Federal nitrate Maximum <br /> Contaminant Level (MCL) of 45 ppm as nitrate or 10 ppm nitrate as nitrogen, and may actually <br /> create a dilution effect to the underlying groundwater. A total nitrogen concentration equivalent to <br /> domestic sources, as referenced in the scientific literature, was used in the loading calculations. <br /> NLS§4.2, SSS§ 6.7, SSS§ 5.4,6.8. The soils directly underlying the proposed leachfield area <br /> show a rapid permeability, but permeability substantially decreases at the 8-ft depth. This may be <br /> beneficial in creating anaerobic conditions at this 8-ft depth due to soil saturation and thus <br /> promoting denitrification. By applying the effluent uniformly through leachlines laid level with <br /> capped ends, will allow optimum effluent management by the receiving soils. <br /> Although a smaller volume septic tank would have been appropriate, a large 2,000 gallon tank has <br /> been specified for theoretical reduction in nitrogen concentrations in the effluent flowing from the <br /> tank, and increasing leachfield longevity by retaining a higher percentage of particulate matter. <br /> The effluent receiving soils possess a perc rate of 5.6 min/inch. This translates to an acceptance <br /> rate of 0.800 gallons/ft2/day. Total lineal ft of leachline (LFLL) =255. Therefore, the-three <br /> leachlines can manage: 4 ft2/LFLL x 255 LFLL= 1,020 ft2 x 0.800 gallons/ft2/day= 816 gpd. <br /> Nothing is to be stored on, and no vehicles are to be driven over the leachfield area. Consideration <br /> should be given to installing bollards or safety barriers around the leachfield since there is <br /> considerable truck traffic within the facility. <br /> Page -9- <br /> Chesney Consulting <br />