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._0' r7thenonexiistent percolation phenomena observed in the Tokay soils compared with the excellent percolation in the non-compacted Kingdon soils, where there was no truck parking. A CME truck-mounted drill rig was used to drill the first set of percolation test borings. Soil samples were taken every five feet for classification purposes. All five of the soil samples down to 23 feet in depth had very similar structural characteristics. Consequently, only two samples were tested for soil texture analysis. The first sample retrieved was from the bottom of the 42-inch boring. The second sample was taken from the deep, 23 foot boring. As recorded on the attached SOIL ANALYSIS REPORT, the soil textures were very similar(Note: the "Sample Number" denotes the 42-inch sample as "LF42" for Leachfield and the 23 FT boring has been denoted as 25 FT, when it should have been 23 Ft.) The soil test results are itemized in the chart below: SOIL PROFILE CHARACTERISTICS AND ANALYTICAL TEST RESULTS SOIL DESCRIPTIONS SAND,SILT AND CLAY SOIL NITROGEN CONTENT PERCENTAGES 42 In.Depth Sandy Clay Loam 53%, 24%, 23% 11 ppm NO3-N 23 Ft. Depth Loam 37%,40%, 23% 11 ppm NO3-N With regard to correlating permeability and particle size analysis, the sand, silt and clay percentages indicate the soils to be relatively similar,particularly regarding the clay content. It would have been expected for the shallow, 42-inch sample with a higher sand content percentage to have at least an equivalent, if not faster perc rate than the deeper perc test boring, but this was not the case. This lends more credibility to the compaction theory/phenomena from the trucks, as discussed above. A chemical assessment of the subsurface soils was done on the two above-referenced samples from 42 inches and 23 feet. The test results are noted on the SOIL ANALYSIS REPORT. Chemistry on these two soil samples was done to analyze several constituents that influence nitrate loading. The important parameters for nitrate loading assessment are the organic matter, pH, cation exchange capacity(CEC), and nitrate-nitrogen content. As noted, the organic matter in the soil profile is low for agronomic purposes, but in sufficient amounts to contribute some nitrate, and provide a substrate carbon source for denitrification. The organic matter test result for the 23-foot depth illustrates a concentration of almost double the 42-inch depth, which has been observed often in other soils. This suggests that indigenous organic matter was more prevalent during the formation of these soils at this depth. Since septic effluent is composed predominately of ammonium (NH4),the pH, along with the Cation Exchange Capacity (CEC),have significant influence on ammonium molecules. The pH of the soil profile is alkaline, which may inhibit ammonium formation and stability, and therefore nitrification. The CEC measures the ability of the soil to theoretically trap and hold ammonium molecules. CEC test results of 7.4 for the 42-inch depth can be considered low, especially with respect to the clay content. The 23-foot depth however, has a CEC of 14.8, or double the CEC of 4 ChesMy Consulting