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w f N This means there is a high potential for the retention of ammonium molecules for microbial uptake i �i and denitrification potential. Because of this, a higher nitrate concentration may have been observed l y in another soil type, also as referenced above. NLS§ 3.3, SSS§ 5.3. Table 1 below summarizes the surface and subsurface soil characteristics encountered from the three soil samples, illustrating the particularly high organic matter content percentages from each sample: TABLE 1 SOIL PROFILE CHARACTERISTI CS..AND ANALYTICAL TEST£RESULTS SAMPLE LOCATION, 3 ORGANIC MA'T'TER SOTL 50IL NITROGEN pH AND SAMPLE DEPTH AND PERCENTAGE CLASSIFICATION:: CONTENT -CATION EXCHANGE r (SAMPLE NUMBER) 17 RATING CAPACITY y. m N0 N 5.3 16.9 me 1100 UNDER EXISTING 25.7% Peat ppm r q g LEACHLINE Very High 3 FT DEPTH (3FTLL) VIRGIN SOIL AREA 43.3% Peat 4 ppm NOS-N 5.7 17.1 meq/100g 3 FT DEPTH Very High (3FT) C. PERCOLATION TEST RESULTS SSS§ 6.2. To assess the permeability capabilities of the soil in the proposed mound system area, `1 three percolation tests were completed in the locations depicted on the Site Plan found in Appendix C / C. The test depths were 24, 36 and 42 inches below existing grade, giving a comparatively detailed observation of subsurface permeability at these strata. Only the 36 and 40-inch test depths are recognized as "official" by EHD. The 24-inch test depth was run for two reasons: First, to test the permeability of the peat soil near the future soil-effluent interface, and secondly, to test the peat soil under unsaturated conditions. This test boring was not pre-saturated as the 36 and 42 inch borings were. SSS§ 6.3. On May 5, 2008, the three perc test borings were drilled in the referenced locations. The sidewalls of each boring were scored with a pry-bar to open potentially smeared sidewalls. Two inches of fine gravel was placed at the bottom and three-inch perforated PVC pipe was inserted in each test boring. As referenced, the 36 and 42 inch borings were pre-saturated with 12 inches of water 0900 hrs, 24 hrs before the start of testing. SSS§ 6.4,6.5. On May 6, 2008, percolation testing commenced. Standing water was observed after the 24-hr soak period in both of the 36 and 42 inch test borings, as illustrated in Table 2 below. Consequently, EHD Perc Test Procedure#1 was conducted. Perc test procedure#2 was conducted for the 24-inch test boring. The unsaturated 24-inch test boring revealed small volumes of water �V percolation every thirty minute intervals demonstrating that under unsaturated conditions, the peat 'soil does possess permeability:` 4 Chesney Consulting