(A) Fill material. Fill material used in an onsite wastewater treatment system shall be coarse sand as defined by the National Resources Conservation Service.
(B) Gravel. Gravel used in an onsite wastewater treatment system shall be sized between three-quarter inch and one and one-half inches, and shall be washed to be essentially free of dust, sand or other material.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)