Item A-MWMC Facilities Plan - Laserfiche WebLink

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8. FINANCIAL STRATEGY Project Type Allocation Providing disinfection for the peak flow management flow stream is additional capacity; replacing the existing chlorine disinfection system is the result of community performance standards. Therefore, 50 percent is allocated to Capacity and 50 percent to Performance because this is the same breakdown between facility components Peak Flow Management and Disinfection/Ouffall. Filtration Facility Component Allocation Filtration is a new unit process and is allocated almost entirely to the new facility component, Tertiary Filters. It is anticipated that during peak flow events, a portion of the secondary effluent will be routed through the filters to assist with permit compliance so there will be some peak flow benefit. Therefore, 90 percent is allocated to Tertiary Filters and 10 percent to Peak Flow Management. Project Type Allocation The filters will provide for more consistent/reliable effluent performance in the dry season to all users - existing and future. A primary driver of the filters is to provide an increased level of performance to enable MWMC to comply with existing mass load limits as influent flows increase. Also, by removing loads from the final effluent the filters in essence free up or create additional dry season capacity. The allocation is assigned 25 percent to Capacity and 75 percent to Performance. Peak Flow Management Alternative 5: Parallel Primary Secondary Facility Component Allocation This project is allocated entirely to ?eak Flow Management. This allocation would not change if a different peak flow management alternative were ultimately implemented. Project Type Allocation This project will increase the peak flow capacity of the facility and is allocated entirely to Capacity. It should be noted that if MWMC is required to implement the more costly peak flow management approach (Alternative 3 - Full Primary Treatment or Alternative 4 - High-Rate Clarification), other projects that have some peak flow management benefit such as primary clarifier enhancements, secondary clarifier enhancements, and the 9th and 10t~ secondary clarifiers will still be implemented. New Banksifle Outfall Facility Component Allocation This project provides additional base out/all capacity/performance and would also increase the peak flow capacity of the overall facility. The project is allocated equally between Disinfection/Out/aH and Peak Flow Management. Project Type Allocation This project expands the capacity of the discharge outfall system to the Willamette River and is allocated entirely to Capacity. MWMC_8.0_REV5.DOC 8-11