Rule 15-18-77-5.4.9 - Absorption Beds1. Absorption beds and trenches should be located a minimum of 10 feet from any trees, except for subsurface drip irrigation.2. Absorption beds have a smaller "footprint" than the same square footage of trench system. This lends them useful in certain installations where the amount of useable space is limited. [FIGURE 3].3. The amount of bottom absorption area required shall be the same as shown in [TABLE II]. The bottom of the bed should have a relatively level grade.4. Lines for distributing effluent shall be spaced from 3 to 6 feet apart and not greater than 3 feet from the sidewall. The number of lines will depend on the square feet and width of the bed to be constructed.5. Care should be taken to prevent heavy machinery from damaging the bed during backfilling.6. The effluent must be equally distributed to the bed by means of a distribution box or with a pipe manifold [FIGURE 4]. 15 Miss. Code. R. 18-77-5.4.9