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*Required for new development(s) and where practicable, <br />for existing developments, <br /> <br /> 5. Surface Flooding. Sewage tanks shall not be placed in <br />the flood plains, delineanted by local ordinances adopted in compliance <br />with the Statewide Standards for Management of Flood Plain Areas of <br />Minnesota (Minn. Reg. NR 85 o 93), or in areas for which regional flood <br />information is available from the Department of Natural Resources. <br /> <br />150.014D DISTRIBUTION OF EFFI,UF)JT <br /> <br />Subd. 1 GtOW1TY DISTRIBUTIOlq <br /> <br />(a) LEVEL GROUND <br /> <br />Where the elevation differences of the ground surface does not exceed <br />twenty-eight (28) inche~ in any direction within the soil treatment area, <br />the sewage tank effluent may be directed to the soil treatment area <br />through a system of interconnected distribution pipes or trenched in a <br />continuous system. <br /> <br />(b) SLIOITLY SLOPING GROUND <br /> <br />Where the elevation difference of the ground surface exceeds twenty- <br />eight (28) inches in any direction within the soil treatment area, the <br />sewage tank effluent may be distributed by a distribution box, provided <br />the final ground surface elevation of the lowest trench is at least <br />one (1) foot higher than the outlet inverts of the distribution box. <br /> <br /> 1. The box shall be watertight with a removable cover and <br />shall be constructed of durable materials not subject to excessive <br />corrosion or decay. Each outlet shall have at least six (6) inches <br />of sidewall space and the side of any outlet shall be at least six <br />(6) inches from any corner. <br /> <br />2. The inverts of all outlets shall be at the same elevation. <br /> <br /> 3. The inlet inverts shall be at least one (1) inch above <br />the outlet inverts. <br /> <br /> 4. The outlet inverts shall be at least four (4) inches <br />above the distribution box floor. <br /> <br /> 5. Each drainfield trench line shall be connected separately <br />to the distribution box and shall not be subdivided. <br /> <br /> 6. ~en sewage tank effluent is delivered to the distribution <br />box by pump, either a baffle wall shall be installed in the distribution <br />box or the pump discharge shal] be directed against a wall or sid~ of <br />the box on which there is no outlet. The baffle shall be secured to <br />the box and shall extend at least one (1) inch above the crown of the <br />inlet flow line. <br /> <br />(c.) SI,OP1NG GROLlqD <br /> <br />l",: ,'; ~1 ,' (.~,"...,'.' ! ' dJffc-rence, of the ground surface e: ceeds twe?.'v- <br />,.. : --' :ii rection within soil treatrne': t area and a <br /> <br /> <br />