Rule 15-18-77-5.9.3 - Design1. The discharge area receiving the effluent shall have a minimum 6 inches of naturally occurring soil free of a restrictive horizon, redoximorphic feature or predominately grey color (>50%) and shall be maintained to prevent surface accumulation or ponding. Overland Discharge is not recommendable on hydric soils conditions.2. The texture of the subsoil material having the slowest permeability rates within 2 feet below the surface receiving effluent shall be used to determine setback.3. The discharge area must be sufficiently sized to maintain the outermost edge of the effluent.4. Slopes of greater than 20 percent shall not be considered for discharge areas unless justified by a Certified Engineer Evaluator15 Miss. Code. R. 18-77-5.9.3