(A) Illinois raised filter bed system. Illinois raised filter bed systems shall be designed, installed, operated and maintained in accordance with the Illinois Private Sewage Disposal Code, with the exception that the requirements of this section shall apply.
(1) Pretreatment. Pretreatment shall be by process designed to reduce the CBOD5 (carbonaceous five-day biochemical oxygen demand) to a maximum concentration of 25 mg/l, and total suspended solids to a maximum concentration of 30 mg/l.
(2) Mantle area size calculation. The square footage of the mantle area shall be equal to the projected daily flow in gallons per day divided by the assigned wastewater loading rate in gallons per day per square foot.
(3) Minimum lateral setback distance. The minimum lateral setback distance shall be measured from the edge of the mantle area.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)