The amount of payment required from an industry for operation and maintenance charges is to be determined by the following procedure:
A. Operation And Maintenance Charges: The operation and maintenance charges shall be allocated in proportion to the benefit of the proposed facility to each wastewater characteristic as follows:
Q = 70 percent of operation and maintenance costs
BOD = 16 percent of operation and maintenance costs
SS = 14 percent of operation and maintenance costs
The operation and maintenance costs of any future expansion, upgrading or reconstruction of the waste treatment facility shall be allocated in proportion to the benefit of the said improvement to any wastewater characteristic so benefited at that time.
B. Total Cost Per Unit: The total cost per unit of each characteristic shall be calculated as follows:
Q Unit Cost = | ||
(Operation and Maintenance Cost) | Percent of Operation and (Maintenance Cost Allocated Q) | |
(Total Design Flow of Facility in Gallons per Day) | ||
BOD Unit Cost = | ||
(Operation and Maintenance Cost) | Percent of Operation and (Maintenance Cost Allocated BOD) | |
(Total Design BOD Capacity of Facility in Pounds per Day) | ||
SS Unit Cost = | ||
(Operation and Maintenance Cost) | Percent of Operation and (Maintenance Cost Allocated SS) | |
(Total Design SS Capability of Facility in Pounds per Day) | ||
C. Cost To Industry: The cost to an industry for the operation and maintenance portion of the user charge is calculated as follows:
Annual O&M Cost = | ||
(Annual Q contributed by Industry) (Q Unit Cost) | ||
+ | ||
(Annual BOD contributed by Industry) (BOD Unit Cost) | ||
+ | ||
(Annual SS contributed by Industry) (SS Unit Cost) | ||
Monthly O&M Cost = | Annual O&M Cost 12 | |
D. Small Contributing Industrial Concerns: For small contributing industrial concerns where it is impractical to develop a monitoring program to measure wasteload discharges, operation and maintenance charges may be made on the basis of estimated flows alone; provided, that the industry does not discharge an excessive strength waste that may disrupt the treatment process as determined by the City. The operation and maintenance payments will be calculated on a similar basis as described herein, except that one hundred percent (100%) of the operation and maintenance cost will be allocated to flow.
E. Payments: Payments for operation and maintenance charges shall begin within a month of the date of initiation of service by the industry of the treatment facility. Operation and maintenance charges shall be reviewed annually and adjustments based upon the actual O&M costs attributable to the industry and the actual O&M payments received from the industry for the previous year shall be made. The O&M charge rate for industrial users shall be adjusted at that time to reflect the actual O&M costs of the previous year. (Ord. 183, 10-24-1984)