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�% ' ♦/ The 42-inch depth represents typical leachline depth. Although leachlines are not specifieJeabTi gn criteria for this project, measured permeability at this depth is useful information. This perility information also applies to the 60-inch test depth where two dramatically differing soil denat this depth were observed between the ELF and the WLF,which influenced percolation andfore, permeability. At the 60 inch depth, the ELF had an SPT of 18 and a perc rate of 15.6 minuch (min/in),while the WLF had an SPT of 43 and a perc rate of 36.0 min/in. SSS§ 6.3 On March 27, 2006, the 60 inch boring and the exploratory borings referenced were drilled with a truck-mounted drill rig for both disposal areas. The 24, 36 and 42 inchtest borings were drilled with a hand auger. The sidewalls of each boring were scored with a pandthe loose material removed. By scoring the sidewalls, this"opens"potentially smeared sur .Throughout most of the month of April, heavy rains prevented percolation testing. Duringinspection of the test borings on April 12, the shallow borings had standing water, demonsg thatthe surface soils were completely saturated with percolating rainwater traveling the least presistence into the borings. On April 24, 2006,two inches of fine gravel was placed at the bottom and three-inch perforatePVC pipe was inserted in each of the eight test borings for the ELF and WLF. Each test boring was pre- saturated with 12 inches of water at 0900 hrs, approximately 24 hrs before the start of testing. SSS§ 6.4, 6.5 On April 25, 2006,percolation testing commenced for the four ELF test borings. No standing water was observed after the 24-hr soak period in any of the test borings. Consequently, EHD Perc Test Procedure#2 was conducted in which testing was done over a four-hour period to induce maximum soil saturation, even though the soil had a high moisture content from the aforementioned rains. Test results for the ELF reveal favorable permeability for the 24, 36, 42 and 60 inch test borings. On April 26, 2006, perc testing commenced for the four WLF test borings after 24 hr saturation with 12 inches of water. Test procedures were identical to the ELF tests. Test results for the WLF also reveal favorable permeability for all four test boring depths. The test results indicate relatively equal perc rates between the ELF and WLF for the 24 inch test depth. The 36 inch test depth for the ELF is approximately 4x slower than the WLF, while the test results for the 42 inch borings are comparable. As referenced above, due to the apparent differences in densities at the 60 inch(5 ft) depth, the WLF at this depth has a perc rate of 2x the ELF rate at this depth. After water level measurement of the test borings to groundwater, the test borings were closed in with bentonite pellets, as witnessed by Ms. Amanda Boertien of EHD. A summary of the perc test results with corresponding application rate in gallons of effluent accepted per square foot of soil,per day are found in Table 2 for the ELF and Table 3 for the WLF: 6 Chesney Consulting