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Jeanne A. Mabusth <br /> June 15, 1983 <br /> page 2 <br /> Trench Depth 6" into natural <br /> Lot 4 Block 1 - Percolation Rate Average 19 MPI both <br /> sites <br /> - Primary site - slope 12� - mottling at 5 .0 ' , 5. 8 ' - <br /> water table at 7 . 7 ' , 7 .2' - standard trenches - maximum <br /> trench depth 24" into original soil <br /> - Alternate site - slope 14� - mottling at 5 .0 ' - water <br /> � table not encountered - standard trenches - maximum trench <br /> _ depth 24" into original soil <br /> Lot 5 Block 1 - Percolation Rate Average 8 MPI (primary <br /> . site) 28 MPI (alternate site) <br /> - Primary site - slope 7p - sandy soils, mottling not en- <br /> countered, water table at 5. 3 ' , 6 .0 ' - standard trenches <br /> - maximum trench depth 28" into original soil � <br /> - Alternate site - slope 7� - mottling at 5.0 ' - water <br /> table at 5.2 ' - standard trenches - maximum trench depth <br /> 24" into original soil <br /> Lot 6 Block 1 - Percolation rate average 13 MPI (primary <br /> � site) 19 MPI (alternate site) <br /> - Primary site - slope 9� - mottling not encountered - water <br /> table at 7 . 5 ' , 7.8 ' - standard trenches <br /> - Alternate site - slope 10-120 - mottling at 4 . 3 ' , water <br /> table at 6 . 8 ' - shallow trenches - maximum trench depth 16" <br /> into original soil <br /> Lot 1 Block 2 - Percolation Rate Average 26 . 3 MPI both sites <br /> - Primary site - slope 80 - mottling at 5. 5' , 5 .9' , water <br /> table at 5 .6 ' , 5. 9' - standard trenches - maximum trench <br /> depth 30" into original soil <br /> - Alternate site - slope 7� - mottling at 3.5 ' , water table <br /> at 4 .3' - modified shallow trenches* - maximum trench <br /> depth 6" into original soil <br /> Lot 2 Block 2 - Percolation rate Average 31 MPI both sites <br /> - Primary site - slope 50 - mottling at 3. 5' - water table <br /> at 3.6 ' , 3 . 7 ' - modified shallow trenches* <br /> - Alternate site - slope 50 - mottling at 3 .0 ' - water table <br /> at 3.2' - modif ied shallow trenches* or Mound - maximum <br /> trench depth - at soil surface (see note below re modified <br /> trenches) <br /> Lot 3 Block 2 - Percolation Rate Average 10 MPI both sites <br /> - Primary site - slope 80 - mottled at 4 .5' , 5. 0 ' - water <br />