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Therefore, it is my professional opinion that the native soils provide a denitrification (and mitigation of <br />nitrification) factor of 30%. <br />NLS§ 3.3, SSS§ 5.3. Table 1 below summarizes the subsurface soil characteristics tested from the <br />soil sample: <br />TABLE 1 <br />SOIL PROFILE CHARACTERISTICS AND <br />ANALYTICAL TEST RESULTS <br />SAMPLE LOCATION <br />SAND, SILT AND <br />SOIL <br />SOIL NITROGEN <br />pH AND <br />(SAMPLE NUMBER) <br />CLAY <br />CLASSIFICATION <br />CONTENT <br />CATION EXCHANGE <br />PERCENTAGES <br />CAPACITY <br />LEACHLINE <br />DISPOSAL AREA <br />73%,10%,17% <br />Sandy Loam <br />9 ppm NO3-N <br />7.9 13.3 meq/100g <br />(38") <br />4 X 100 ft LFLL E -W <br />C. PERCOLATION TEST RESULTS <br />SSS§ 6.2. To assess the permeability of the proposed leachfield disposal area, a percolation test was <br />completed in the location depicted on the aerial photo found in Appendix C. <br />SSS§ 6.3. On November 4, 2021, a 38" deep percolation test boring was hand -drilled in the <br />referenced location. The sidewall was scored with a pry -bar to open potentially smeared surfaces. <br />Two inches of pea gravel was placed at the bottom and three-inch perforated PVC pipe was inserted <br />to prevent cave-in. The test boring was pre -saturated with 12 inches of water at 0800 hrs, 24 hrs <br />prior to the start of testing. <br />SSS§ 6.4, 6.5. On November 5, 2021, percolation testing commenced. No standing water was <br />observed after the 24 -hr soak period. Consequently, EHD Perc Test Procedure #2 was conducted in <br />which testing was done over a four-hour period to induce maximum soil saturation. The test results <br />indicated a comparatively rapid perc rate of 8.3 min/in. <br />A summary of the perc test results for the proposed disposal area with corresponding application <br />rates in gallons of effluent accepted per square foot of soil, per day, are found in Table 2: <br />TABLE 2 <br />i <br />PERCOLATION TEST RESUL S. FOR THE PRIMARY DISPOSAL AREA WITH <br />CORRESPONDING APPLICATION RATES IN GALLONS / FTZ / DAY <br />38 INCH DEEP PERC TEST BORING 8.3 min/inch / 0.80 gallons/ft2/day <br />PERCOLATION RATE / APPLICATION RATE <br />Application Rates adapted from O WTS Policy: Water Quality Control Policy for Siting, Design, Operation, and Maintenance ojOnsite Wastewater Treatment Systems. <br />Chesney Consulting <br />