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�.. r TABLE 1 SOIL PROFILE CHARACTERISTICS AND ANALYTICAL TEST RESULTS SAMPLE LOCATION, SAND,SILT AND SOIL SOIL NITROGEN pH AND SAMPLE DEPTH AND CLAY CLASSIFICATION CONTENT CATION EXCHANGE (SAMPLE NUMBER) PERCENTAGES CAPACITY PRIMARY DISPOSAL 91%,2%,6% Sand 4 ppm NO;-\ 6.2 3.6 meq/100g FIELD 16"DEPTH (1.33 FT) PRIMARY DISPOSAL 91%,2%,6% Sand 5 ppm NO,-N 6.5 2.6 meq/100g FIELD 40" DEPTH (3.33 FT) C. PERCOLATION TEST RESULTS AND IMPORT SOIL LINER CHARACTERISTICS SSS§ 6 jr. To assess the permeability of the proposed leachfield area, a percolation test was completed in the future leachfield location, as depicted on the EHD Aerial Photo found in AppendixX C. The test depth was 40 inches below existing grade. This test depth represent the approximate ` depth elevation of the future soil-effluent interface (the floor of the leachline trenches). SSS§ 6.3./n May 15, 2007, the perc test boring was hand-drilled in the referenced location. The sidewalls of the boring were not scored with a pry-bar since there was no smearing of the sidewalls due to the sandy nature of the native soils. If the soil contained higher percentages of silt and clay, then scoring the sidewalls is a critical procedure and"opens"potentially smeared surfaces. Two inches of fine gravel was placed at the bottom and three-inch perforated PVC pipe was inserted in each test boring. The boring was pre-saturated with 12 inches of water at 0800 hrs, 24 hrs before the start of testing. SSS§ 6.4, 6.5. On May 16, 2007,percolation testing commenced. IBJ anding water was observed after the 24-hr soak period. Consequently, EHD Perc Test Procedur6#2 as conducted in which testing was done over a 3.5 hour period to induce maximum soil satu ion. Due to the sandy nature of the soils, EHD Perc Test Procedure#1 could have been run in which a one-hour test is performed instead of a four-hour test. However, to obtain a realistic and pertinent perc rate, the water level readings for the last hour were taken every ten minutes, as illustrated in the second column (Referenced as Test Hole#2) on the EHD Perc Test Form. Consequently, instead of obtaining the final reading for the last one hour of a four-hour test equal to: 30 minutes- 5.8 inches= 5.2 min/in, the ten minute readings give a true perc rate of. 10 minutes- 3.12 inches =3.2 min/in. The test results indicate exceedingly' pId percolation under EHD_standards: The EHD allows a maximum rate(in terms of speed) of 5 m`--iin o�r a perc rate. 4 Chesney Consulting