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06/15/99 TUE 16:48 FAX 770 435 5997 FACILITY ENGRS (114 <br /> 1 6-1 7 UNIFORM PLUM131NG CODB <br /> lineal feet (304.8 rn), the dosing tank shall be provided with two (2) <br /> siphons or pumps dosing alternately and each serving one-half (112) of3 � fS/rl?G <br /> the leach field. T-AAAe' <br /> (i) Disposal fields shall be constructed as follows: <br /> Minimum Maxiifflum <br /> Number of drain lines <br /> per field 1 - <br /> Length of each line 100 ft (30.5 m) <br /> Bottom width of trench 18 In (457.2mm) 36 in (91 -.4mm) <br /> Spacing of lines,' <br /> center to center &ft(1.8 m) - <br /> Depth of earth cover <br /> of litres [preferred <br /> 18 in (457.2 mm)] 12 in (304.8 mm) - <br /> Grade of lines level 3 inf100 ft 5 mmlrn) <br /> Filter material <br /> under drain lines 12 in(304.8 mm) - <br /> Filter material <br /> over drain lines 2 in (50.8 mm) <br /> Minimum spacing between trenches or leaching beds shall be four (4) <br /> E feet 1.2 mplus two 2 feel 6 m for each additional fcot 3 M) of <br /> depth in excess of one (1) foot (.3 m) below the bottom of ti"a drain line. <br /> Distribution drain lines in leaching beds shall not be more tha i six (6) feet <br /> (1.8 m) apart on centers and no part of the perimeter of the I caching bed <br /> shall be more than three (3) feet (.9 m) from a distributioi drain lime. <br /> Disposal fields, trenches and leaching beds shall not be pzved over or <br /> covered by concrete or any material that can reduce or inhibit any <br /> possible evaporation of sewer effluent. <br /> 0) When necessary on sloping ground to prevent excessive line <br /> slope, leach lines or leach beds shall be stepped. The lines between <br /> each horizontal section shall be made with watertight joints and shall be <br /> designed so each horizontal leaching trench or iced shall -be utilized to <br /> the maximum capacity before the effluent shall pass to ME! next lower <br /> leach line or bed. The lines between each horizontal leaching section <br /> shall be made with approved watertight joints and installed cin natural or <br /> unfilled ground. <br /> 17-Seepage Pits <br /> (a) The capacity of seepage pits shall be based on the quantity of <br /> liquid waste discharging thereinto, and on the character and porosity of <br /> the surrounding soil and shall conform to Section 1-3 of this Appendix. <br /> (b) Multiple seepage pit installations shall be served through an <br /> 212 <br />