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SSS§5.2,NLS§ 1.1, 1.2. Noted on the Denele Laboratory Soil Analysis Reports, chemical 555 N analyses of the two soil samples from the 36-inch depth and the seven-foot depth quantify several constituents that will influence nitrate loading from this project. The important parameters for nitrate loading assessment are the organic matter,pH, cation exchange capacity(CEC), clay content percentage, along with nitrate-nitrogen content. As noted, the nitrate-nitrogen content is a low 13 ppm at the three-ft depth, but increases to a higher concentration of 37 ppm at the seven-ft depth. Organic matter in the soil is below normal in both soil samples. There is a slight increase in OM content at the deeper depths than at the shallower depths. These two analyses (nitrate/OM) suggests a medium potential for future nitrate-nitrogen loading from indigenous nitrogen and OM soil content. It may also suggest a medium denitrification potential since organic matter is needed for promotion of denitrification. Since septic effluent is composed predominately of ammonium (NH4), the pH, along with the CEC,are significant influences on ammonium molecules. The pH of the soil profile is alkaline which may inhibit ammonium formation and therefore stability, thus theoretically inhibiting nitrification. The CEC measures the ability of the soil to theoretically trap and hold ammonium molecules. Cation Exchange Capacities of the soil samples are medium due to the clay and silt contents. This suggests there is a medium potential for the retention of ammonium molecules for microbial uptake, and suppression of nitrification. NLS§ 5.3 Table 1 below summarizes the subsurface soil characteristics encountered from the three and seven foot depths: TABLE 1 SOIL PROFILE CHARACTERISTICS AND ANALYTICAL TEST RESULTS SAMPLE LOCATION, APPROXIMATE SAND, USDA SOIL SOIL NITROGEN pH AND SAMPLE DEPTH AND SILT AND CLAY CLASSIFICATION CONTENT CATION EXCHANGE (SAMPLE NUMBER PERCENTAGES\ ) (BASED ON PREVIOUS CAPACITY I I ) SOIL TESTING) PRIMARY DISPOSAL 55%,28%, 17% Sandy Loam 13 ppm NO3-N 8.3 14.7 meq/100- FIELD (very low) 36"DEPTH PRIMARY DISPOSAL 67%,22%, ]]% Sandy Loam 37 ppm NO3-N 7.9 14.2 meq/100 FIELD (normal) 7 FT DEPTH C. PERCOLATION TEST RESULTS SSS§ 5.2,6.2. Percolation tests were conducted in the location of the proposed leachfield area. Test locations are depicted on the Filed Perc Test Form. The subsurface soil investigation and testing began with hand-drilling a 36-inch perc test boring. A seven foot deep test boring was Z then drilled 13 ft to the north of the shallow boring. Soil samples were retrieved from each of these two depths for chemical analyses, referenced above. 3