(A) (1) The city shall determine the total estimated costs of administration and of operation and maintenance for the ensuing year which are necessary to maintain the capacity and performance during the service life of the treatment works, for which such works were designed and constructed.
(2) These costs shall be determined as two separate items of expense: those costs associated as administrative shall include billing, meter reading, travel, fees, insurance, bonds authorized prior to the adoption of the ordinance codified herein and collection system replacement projects; and those costs associated as operation and maintenance of the wastewater system shall include, but need not be limited to, labor, labor costs including FICA, retirement, workers’ compensation and insurance, repairs, equipment replacement, maintenance, necessary modifications or additions to the wastewater treatment plant, utilities, chemicals and materials, sampling and testing, studies and reports by special consultants, capital improvements, normal use repairs and replacement, new construction, principal and interest of bonds payable from revenues of the wastewater system, and an adequate reserve fund.
(B) The total estimated annual cost associated with operation and maintenance shall be allocated by percentage to each of three parameters, namely: flow (volume) 60%, biochemical oxygen demand (BOD) 25%, and total suspended solids (TSS) 15%.
(C) BOD shall mean five-day, 20°C biochemical oxygen demand under standard laboratory procedure. The percentage allocation for each parameter shall be reviewed periodically and adjusted if necessary.
(Prior Code, § 13.96.020) (Ord. 459, passed - -1979; Ord. 607, passed - -1994; Ord. 712, passed - -2004)