A. Industrial waste charges shall be based on flow, BOD and suspended solids. All measurement methods shall first be approved by the director before any consideration of industrial waste charges. The rates of charge and methods of determining sewage strength are set forth below in this section and in VMC 14.12.060.

B. To cover allocated capacity capital costs, an annualized charge (to be collected in equal monthly payments) is levied on each customer discharging into the facility, based on a peak hourly rate of $16,306 per million gallons per day of allocated capacity, plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $4,791 per million gallons per day of allocated capacity; plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $427.00 per each 100 pounds of BOD per day of allocated capacity; plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $168.00 per each 100 pounds suspended solids (SS) per day of allocated capacity, in terms of committed loadings in the total industrial wastewater stream, as determined by the director. Recovery of such capital costs from the users shall cease upon payment by the city of revenue bonds issued in 1979 to pay for the facility.

C. To cover base operating and maintenance (O and M) costs, an annualized charge (to be collected in equal monthly payments) is levied, based on a peak hourly rate of $572.00 per million gallons per day of allocated capacity; plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $1,456 per million gallons per day of allocated capacity; plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $50.00 per each 100 pounds of BOD per each day of allocated capacity, in terms of committed BOD loading in the total industrial wastewater stream, as determined by the director; plus an annualized charge (to be collected in equal monthly payments) based on a peak monthly rate of $37.00 per each 100 pounds of suspended solids (SS) per day of allocated capacity.

D. To cover demand O and M costs, a monthly charge is levied based on a rate of $130.00 per million gallons of measured volume of total industrial wastewater plus rates for strength of industrial wastes as established at $5.90 per each 100 pounds of BOD and $4.00 per each 100 pounds of suspended solids.

E. To cover final treatment costs of all facility effluent discharged to the Westside Wastewater Treatment Plant, a monthly final treatment cost is established based on a rate of $71.83 per million gallons of measured volume of total industrial wastewater plus an industrial strength rate established at $18.30 for each 100 pounds of BOD and $9.20 per each 100 pounds of suspended solids. Waste loads will be determined on the basis that the average annual facility performance is 91 percent removal for BOD and 80 percent removal for suspended solids. Removal rates shall be reviewed annually by the city.

F. Wastewater samples are to be taken by authorized representatives of the director. The samples taken shall be 24-hour flow proportioned composite samples. Except for seasonal industrial wastes, charges shall apply as determined on the basis of at least eight 24-hour flow proportioned sample analyses to be obtained each month, and at least 12 times per month in the case of seasonal users during respective canning seasons, and such analyses averaged for each month.

G. All sampling authorized in this chapter shall be in addition to, and shall not limit, the city’s authority under Chapter 14.10 VMC.

H. Sampling procedures and methods conducted by or under direction of the director shall involve a 24-hour flow-proportioning sampling device and be in accordance with methods established by good engineering practices. Sampling shall be conducted at sampling manholes or other locations adjudged by the director to be suitable points from which samples would be representative, either singly or with other samples of the industrial waste to be sampled. Samples shall be analyzed at an approved laboratory as designated by the director.

I. Rates established under this chapter shall be reviewed annually and may be amended as determined to be necessary and proper by the city council, but subject to contractual obligations to users. The annual review shall include, among other things, the principles and methodology included in the August 1980 Industrial Pretreatment Facility Rates Analysis and other sound engineering practices. Base O and M, demand O and M, and final treatment cost shall be reviewed annually. (Ord. M-4359 § 4, 2021; Ord. M-4022 § 51, 2012; Ord. M-2705, 1987)