A. Unit charge rates "RFLOW," "RBOD," and "RSS" in the industrial wastewater surcharge shall remain unchanged if no significant changes occur for the sewerage system by the procedure described herein.
B. For the sewerage system, appropriate unit charge rate parameters for flow, biochemical oxygen demand and suspended solids, respectively designated "RFLOW" (in dollars per million gallons per year), "RBOD" (in dollars per 1,000 pounds per year), and "RSS," (in dollars per 1,000 pounds of suspended solids per year), shall be determined by the following method:
1. The total capital outlay for construction of sewerage facilities, including debt principal and interest, shall be estimated and distributed among the 3 parameters in accordance with the city's determination of the percentage of the total existing capital facilities of the sewerage system predominately related to each parameter.
2. The total operation and maintenance costs of the system shall be distributed among the 3 parameters in accordance with the city's determination as to which charges are predominately related to each parameter.
3. The sum of the capital costs and operation and maintenance costs determined for each parameter in subsections B.1. and B.2. above, shall be divided by the total volume of wastewater and weight of BOD and suspended solids to be treated by the sewerage system in order to obtain the unit charge rates "RFLOW," "RBOD," and "RSS," for the system.
C. The city may require industrial users to pay an additional fee, in accordance with the Master Fee Schedule, to recover the costs of administering the industrial pretreatment program.
(Ord. 24-1330, § 1, passed 4-23-2024)