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Consequently, it was decided to conduct two additional 42 inch perc test borings under the following conditions: 1.) One perc test boring was drilled on each of the two soil types (Kingdon vs. Tokay), 2.) Both borings were drilled by hand to prevent the severe soil smearing sometimes observed with the drill rig auger and 3.) The North test boring (Kingdon soil)was drilled where there had been no truck parking, while the south boring (Tokay soil) was done in an area of truck parking. This second round of perc tests was done on August 22 under the same procedures as the first set of tests. The test results yielded interesting results with the Kingdon soil exhibiting excellent percolation at 11.5 min/inch and the Tokay soils with virtually no percolation. Therefore, from these second tests, it was determined that: 1.)The drilling method did not affect percolation, 2.) There were differences between the two soil types, but in my opinion, not enough to produce virtually no percolation in the Tokay soils, and 3.) The weight of the truck wheels parked in the test area significantly affected subsurface permeability at the 42-inch depth. In addition to the conventional perc tests described above for the second round of testing, hydraulic conductivity tests were conducted on the two soil types. The Tokay soil test was 23.4 inches deep and the Kingdon soil test was 18 inches deep. After four hours of testing, the Tokay soils absorbed 300 cc (ml) of clear water and the Kingdon soils absorbed 1,080 cc of water. This is equivalent to 0.00033 gal/min or 0.475 gallons/day for the Tokay soils and 0.00119 gal/min or 1.71 gallons/day for the Kingdon soils. The internal area of the 23.4 deep x 4.5 in. dia. boring is 347 int or 2.4 ft2 and for the 18-inch deep x 4.5 inch dia. boring is 271 int or 1.9 ft'. Therefore, the shallow septic effluent application rate for the Tokay soil is theoretically 0.2 gallons/ft2/day and for the Kingdon soil is 0.9 gallons/ft2/day. Again,the hydraulic conductivity tests indicate that the differences in the structural characteristics of the two soil types, along with soil compaction from truck tires, is also contributing to the observed differences in hydraulic conductivity rates. The perc tests and hydraulic conductivity test results are summarized below: INITIAL PERCOLATION TEST RESULTS (8/16/02) 42 INCH PERC RATE IN MIN/INCH 12 FT PERC RATE IN 23 FT PERC RATE IN MIN/INCH MIN/INCH 0 min/inch 100 min/inch 2.8 min/inch PERCOLATION/HYDRAULIC CONDUCTIVITY TEST RESULTS (8/22/02) NORTH 42 INCH PERC NORTH 18"HYDRAULIC SOUTH 42 INCH PERC SOUTH 18" HYDRAULIC RATE IN MIN/INCH CONDUCTIVITY TEST IN RATE IN MINIINCH CONDUCTIVITY TEST IN (Kingdon Soils) GALS/SQ FT/DAY (Tokay Soils) GALS/SQ FT/DAY 11.5 min/in 0.9 gallons/ft'/day 250 min/in 0.2 gallons/ft2/day h Chesney Consulting