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(---A lower CEC would have been expected in the shallow soils. This suggests that the surface and <br />subsurface soils have a medium potential for the retention of ammonium molecules for microbial and <br />plant root assimilation. The nitrate nitrogen concentrations at each depth is nearly the same, <br />indicating that even with high OM in the surface soils, this is not promoting higher nitrogen <br />concentrations at the lower depths. This may be attributable to a significant denitrification <br />environment. <br />NLS§ 3.3, SSS§ 5.3, 5.4. Table 1 below summarizes the analyzed soil physical and chemical <br />characteristics from the retrieved soil samples: <br />TABLE 1 <br />SOIL PROFILE CHARACTERISTICS AND <br />ANALYTICAL TEST RESULTS <br />SAMPLE LH. DEPTH SOIL TEXTURE <br />CLASSIFICATION <br />SOIL NITRATE- <br />NITROGEN CONTENT <br />pH AND <br />CATION EXCHANGE CAPACITY <br />In meq/100g <br />3 FT DEPTH Sandy Loam <br />(ML, SM) <br />15 ppm NO 3 -N 9.0 13.2 meq/100g <br />8 FT DEPTH Loamy Sand <br />(ML, SM, CL) <br />14 ppm N01-N 8.6 14.7 meq/100g <br />C. PERCOLATION TEST RESULTS <br />SSS§ 6.2. To assess the permeability of the shallow leachline soils and deeper soils indicative of <br />sumps, percolation test borings were completed in the location depicted on the project Site Plan <br />produced by Michael Orozco, PE who is the engineer for Robertson's. <br />SSS§ 6.3. After drilling, the sidewall of the shallow boring was scored with a pry-bar to open <br />potentially smeared soil surfaces that may have occurred. Two inches of pea gravel was placed at <br />the bottom and a three-inch perforated PVC pipe was inserted in each test boring. After these <br />procedures, the borings were pre-saturated with 12 inches of water approximately 24 hrs prior to <br />the start of testing. <br />SSS§ 6.4, 6.5. On November 21, 2019, percolation testing commenced at 0745 hrs. No standing <br />water was observed in either boring after the 24-hr soak period. Consequently, EHD Perc Test <br />Procedure 142 was conducted. Testing was done over a four-hour period to induce maximum soil <br />saturation. A summary of the perc test results with corresponding application rates in gallons of <br />effluent accepted per square foot of soil per day are illustrated below: <br />Page -3- <br />Chesney Consulting