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TABLE 7.2.1-1 <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 />Capacity, each/Total NA 3.75 mgd / 30 mgd <br />Hydraulic Loading Rate @ QWWA NA 2.79 gpm/ft2 <br />Hydraulic Loading Rate @ OwwPH NA 7.77 gpm/ft2 <br />TSS Removal Efficiency @ Qww^ and QWWPH NA 75% <br />Solids Loading Rate @ QWWA NA 0.07 Ib/day-ft2 <br />Solids Loading Rate @ QWWPH NA 0.29 Ib/day-ft2 <br />Filter Backwash Pumps <br />Number of units NA 3 <br />Capacity NA <br />Type NA <br />PLANT AIR <br />Compressed Air System <br />Number of units 4 4 <br />Capacity, each 2 @ 33 cfm @ 90 psig 2 @ 33 cfm @ 90 psig <br /> 2 @ 150 cfm @ 100 psig 2 @ 150 cfm @ 100 psig <br />PLANT WATER PUMPS <br />Reclaim Water Pumps 0N2) <br />Number of units 3 3 <br />Type Centrifugal Centrifugal <br />Capacity, each/total 3.4 mgd/10.2 mgd @ 80 psi 3.4 mgd/10.2 mgd @ 80 psi <br />Drive VFD VFD <br />Motor Horsepower, each 150 hp 150 hp <br />DISINFECTION <br />Chlorine Gas Disinfection (total flow stream) <br />Number of Contact Tanks 4 NA <br />Volume, ea (ft3) 132,700 ft3 NA <br />Number of Chlorine Evaporators 2 NA <br />Evaporator Capacity, each/Total 8,000 lb/day / 16, 000 lb/day NA <br />Number of Chlorinators 5 NA <br />Chlorinator Capacity, each/Total 1,000 lb/day / 5,000 lb/day NA <br />Number of Sulfur Dioxide Evaporators 1 NA <br />Evaporator Capacity, each/Total 450 lb/day NA <br />Number of Sulfonators 1 NA <br />Sulfonator Capacity, each/Total 1000 lb/day NA <br />Actual Detention Time <br />Dry Season Average Month (QDs^M) 117 minutes NA <br />Wet Season Average Max Month (QwwA) 82 minutes NA <br />Peak Hour (QwwpH) 35.7 minutes NA <br />Chlorine Dose <br />Average 3.25 mg/L NA <br />Maximum 4.94 mg/L NA <br /> <br />MWMC_TABLE 7.2.1-1 _REVT.DOC 5 <br /> <br /> <br />