(a) Base O&M Charges. Calculation of base O&M charges shall be calculated and established on an annual basis at the beginning of each calendar year. O&M costs associated with the operation and maintenance of the City’s process water reuse facilities shall be shared proportionately between all users of the facilities, based upon the estimated annual flows for each industrial user. Base O&M costs shall be allocated and collected over a 12-month period. The base O&M costs and resulting base O&M charges shall be established and based upon an adopted City Council budget for the process water reuse facility. The minimum annual base O&M charge for any single user of the facility shall be as set forth in Chapter 3.35 PMC.

(a) For industrial customers utilizing the facilities specifically constructed (customized) for a specific customer(s), the costs of operation and maintenance over and above the base O&M costs shall be directly borne by those customers. The other O&M charges shall be based upon the actual costs incurred by the City during those specific months. If there are multiple users of the customized system, the costs shall be shared proportionately between the users based upon the actual monthly flows of each user during that period. Other O&M charges and minimum monthly charges shall be in addition to the base O&M charges calculated in subsection (1)(a) of this section.

(b) Annual Adjustment. It is the intent of this chapter that the industrial users of the process water reuse facilities pay the actual operation and maintenance (O&M) costs incurred by the City to operate the process water reuse facilities. Therefore, the O&M costs incurred from the discharge from each industrial user will be reviewed on an annual basis and the actual operating costs for both the base O&M charges and the other O&M charges will be determined. The difference between the amount paid for O&M, on a monthly basis, and the actual O&M costs incurred shall be determined by the City. The difference determined shall either be rebated to or collected from the industrial user(s) using the process water reuse facilities. In order to assist the City and industrial user(s), the City Finance Director and the Director of Public Works shall after each calendar quarter prepare a summary of revenues received and expenses incurred during the previous quarter, as well as a forecast (to the extent reasonably possible) of revenues and expenses for the next quarter.

(c) Overage Charges/Effluent Characteristics. The Process Water Reuse Facility has a fluctuating and finite capacity to accept process wastewater. Therefore, the base monthly charge has been calculated to include a capacity and limitation allowance for the following effluent volumes, strengths and characteristics: The limits are set forth in the City of Pasco Waste Discharge Permit No. 5388 issued by the State of Washington Department of Ecology (SWDOE) and the individual waste discharge permits of the customers. Each customer shall be monitored for compliance to the approved flows and loading rates. Based on the usage limitations in PMC 13.55.040, consecutive 15-day allowances for the following characteristics will be monitored for each customer.

(d) The time periods for determination of daily and consecutive 15-day totals for each characteristic shall be for the 24-hour period starting at 1:00 a.m. and ending at 12:59 a.m. The time periods for determination of consecutive 15-day allowance periods shall be a rolling time period during the entire year.

(e) The overage charges to be assessed to and paid monthly by the industrial user when exceeding the 15-day allowance limitation set forth above shall be for the following categories, each rate as set forth in Chapter 3.35 PMC:

(f) Nothing within this chapter shall preclude the right of the City and the City Manager to negotiate a special O&M rate or contract rate with an individual customer or industrial user of the system.