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3. EXISTING WASTEWATER FACILITIES without respect to ownership, because all stations will need to be upgraded prior to 2025. Table 3.1.4-1 lists the major pump stations and their existing capacities. TABLE 3.1.4-1 West Eugene Pump Stations MWMC Facilities Plan, Eugene-Springfield Number of Capacity With One Capacity With All Pump Station Pumps Pump Out (mgd) Pumps Operating (mgd) Division Street 2 0.7 1.4 Skipper 2 3.0 5.0 Greenwich 2 1.0 1.5 Irvington (updated in 2003) 3 13.5 18.0 West Irwin 3 18.0 21.0 Terry Street 3 10.0 14.0 Barger-Greenhill 2 3.7 7.5 3.1.5 Status of Conveyance System The conveyance system was evaluated during development of the MWMC Wet Weather Flow Management Plan (WWFMP) (CH2M HILL, 2001). This included: Performing flow monitoring to characterize wet weather flows in basins · Estimating peak flows for the 5-year, 24-hour storm · Identifying pipeline and pump station deficiencies for existing and buildout land use conditions · Identifying pipe and pump station upgrades necessary to convey peak flows to the WPCF * Developing and analyzing wet weather flow management options for producing the most cost-effective flow management in all basins · Analyzing the potential effectiveness of reducing peak flows through reduction of rainfall-dependent infiltration and inflow (RDII) in basins with high RDII. Since the adoption of the WWFMP, both Eugene and Springfield have initiated positive management practices for the wastewater collection system as outlined in Section 7.15 of the WWFMP. Both cities have aggressively pursued RDII source detection and reduction projects, executing RDII projects recommended in the WWFMP 10-year implementation plan on schedule. The results of the conveyance system evaluation described in the WWFMP were updated as part of this facilities planning effort. MWMC_3.0_REV11.DOC 3-5