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TABLE 7.2.t-1 <br />Liquid Processes Design Criteria, Existing and 2025 Capacity Needs <br />MWMC Facilities Plan, Eugene-Springfield <br /> <br /> Unit Process Existing Criteria/Conditions Year 2025 <br /> <br />Cyclonic Grit Separators <br />Number of Units NA 4 <br />Diameter NA 20-ft <br />Capacity, each NA 40 mgd <br />Grit Handling <br />Number of Grit Pumps 4 8 <br />Pump Capacity Per Pump/Total Capacity 300 gpm/1,200 gpm 4 @ 300 gpm/I,200 gpm <br /> 4@ <br />Pump Type Recessed Impeller, Centrifugal Recessed Impeller, Centrifugal <br />Cyclone Degritters <br />Number of Units 4 8 <br />Cyclone Capacity/Total Capacity 300 gpm/1,200 gpm 4 @ 300 gpm/1,200 gpm <br /> 4@ <br />Classifiers <br />Number of Units 2 4 <br />Type Inclined Screw Inclined Screw <br />Size 12-inch 12-inch <br />Capacity, each/Total Capacity 600 gpm/1,200 gpm 2 @ 600 gpm/1,200 gpm <br /> 2@ <br />Screenings/Grit Conveyance and Storage <br />Compacted Screenings/Grit Conveyor <br />Number of Units 2 2 <br />Type Shaftless, Dual-Drive Shaftless, Dual-Drive <br />Capacity/Total Capacity Grit - 900 lb/hr / 1,800 lb/hr Grit - 900 lb/hr / 1,800 lb/hr <br /> Screening - 1,400 lb/hr / 2,800 Screening - 1,400 lb/hr / 2,800 <br /> lb/hr lb/hr <br /> <br />Solids Loadout Conveyor <br />Number of Units 2 2 <br />Type Shaftless Screw Shaftless Screw <br />Capacity/Total Capacity Grit - 900 lb/hr / 1,800 lb/hr Grit - 900 lb/hr / 1,800 lb/hr <br /> Screening - 1,400 lb/hr / 2,800 Screening - 1,400 lb/hr / 2,800 <br /> lb/hr lb/hr <br />Screenings/Grit Hopper <br />Number of Units 2 2 <br />Type Shaftless Screw Sha[tless Screw <br />Capacity/Total Capacity Grit - 900 lb/hr / 1,800 lb/hr Grit - 900 lb/hr / 1,800 lb/hr <br /> Screening - 1,400 lb/hr / 2,800 Screening - 1,400 lb/hr / 2,800 <br /> lb/hr lb/hr <br /> <br />PREAERATION <br />Preaeration Basins <br />Number of Units 4 4 <br />HRT @ QDWA 15 min 22.8 min (if used for DWA) <br /> <br />MWMC_TABLE 7.2.1-1_REV7.DOC 2 <br /> <br /> <br />