(A) When the BOD exceeds 225 mg/l, the suspended solids exceeds 225 mg/l, and other pollutant concentrations from a user exceed the range of concentration of these pollutants in normal domestic sewage, a surcharge shall be added to the basic charge, and shall be calculated by the following formula:
Cs=[Bc(B)+Sc(S)+Pc(P)]Vu
(B) Where:
(1) Cs = A surcharge for wastewaters of excessive strength;
(2) Bc = O&M cost for treatment of a unit of BOD;
(3) B = Concentration of biochemical oxygen demand (BOD) from a user above a base level;
(4) Sc = Operation and maintenance (O&M) cost for treatment of a unit of suspended solids;
(5) S = Concentration of suspended solids from a user above a base level;
(6) Pc = O&M cost for treatment of a unit of any pollutant;
(7) P = Concentration of any pollutant from a user above a base level; and
(8) Vu = Volume contribution from a user per unit of time.
(Prior Code, § 44-187) (Ord. 779, passed 5-4-1987)