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F <br /> Table 1 below summarizes the subsurface soil characteristics encountered: <br /> SOIL PROFILE CHARACTERISTICS AND <br /> ANALYTICAL TEST RESULTS <br /> SAMPLE DEPTH SAND,SILr AND SOIL SOIL NITROGEN pH AND <br /> CLAYCLASSIFICATION CON'rENT CATION EXCHANGE <br /> PERCENTAGES - CAPACITY <br /> 36 INCH DEPTH 68%, 18%, 14% Sandy Loam 2 ppm NO,N 8.3 12.1 meq/100g <br /> C. PERCOLATION TEST RESULTS <br /> SSS§6.2. To assess the permeability correlated with an application rate of the effluent disposal <br /> soils, a percolation test boring was completed in the reserve leachfield location as depicted on the <br /> Site Plan found in Appendix C. The test depth was 36 inches below existing grade giving a detailed <br /> observation of subsurface permeability from approximately 30 to 42 inches in depth, which is the <br /> approximate rock depth of the existing filter bed. <br /> SSS§ 6.3. On November 29, 2017,the perc test boring was hand-drilled in the referenced location. <br /> The sidewalls of the boring were scored with a pry-bar to open potentially smeared sidewalls. Two <br /> inches of fine gravel was placed at the bottom and three-inch perforated PVC pipe was inserted in <br /> the boring. The test boring was then pre-saturated with 12 inches of water 24 hrs before the start of <br /> testing. <br /> SSS§ 6.4, 6.5. On November 30, 2017, percolation testing commenced. No standing water was <br /> observed after the 24-hr soak period. Consequently, EHD Perc Test Procedure #2 was conducted in <br /> which testing was done over a four-hour period to induce maximum soil saturation. The test results <br /> indicate a perc rate of 10.3 minutes per inch (min/in) in comparison with 8.9 min/in determined in <br /> November 2007. A summary of the perc test results with corresponding application rates in gallons <br /> of effluent accepted per square foot of soil per day are found in Table 2: <br /> TABLE 2 <br /> PERCOLATION TEST RESULTS FOR THE DISPOSAL AREA WITH <br /> CORRESPONDING APPLICATION RATES IN GALLONS/FT'/DAY <br /> 36 INCH DEEP PERC TEST BORING 10.3 min/inch / 0.8 gallons/ft2/day <br /> PERCOLATION RATE/APPLICATION RATE <br /> Application Rate adapted from California State Water Resources Control Board OWTS Policy and is derived from the Perc Rate. <br /> 3 ____j <br /> Chesney Consulting <br />