Final FY25 Adopted Budget
2024 2028 thru
Capital Improvement Plan 2024-2028 City of Iowa City, Iowa
PUBLIC WORKS
Department
Contact Tim Wilkey
One Phase
Type
V3174
Project #
25 years
Useful Life
Project Name Aeration Equipment Improvements
Wastewater Treatment
Category
GRANTEE NONE
PLAN None
Efficiency Improvement (3)
Priority
MATCH % NONE
TIF DISTRICT None
Active
Status
Total Project Cost: $3,628,000
Description Replace the remaining mixers in the aeration trains 1 - 4 with high efficiency mixers matching those placed in Cell 9 of trains 1-4 and replace mixers in the high strength tank. This would be total of 30 mixers.
Justification Most of these mixers are original to the 2002/2014 construction and have been rebuilt at least once at a cost of $7,000 to almost $10,000 a piece. They typically operate 24hs/7 days a week when the trains are in service. Replacement with the higher efficiency mixer with lower horsepower will decrease energy usage and continue to reduce our carbon footprint. Estimated cost savings over a 20-year period were estimated to be in excess of $600,000 when all 30 mixers in operation.
Expenditures
Total
Future
2024
2025
2026
2027
2028
CONSTRUCTION
300,000
350,000
100,000
750,000
2,878,000
300,000
350,000
100,000
750,000
Total
Total
Funding Sources
Total
Future
2024
2025
2026
2027
2028
WASTEWATER FUND
300,000
350,000
100,000
750,000
2,878,000
300,000
350,000
100,000
750,000
Total
Total
Budget Impact/Other We anticipate an energy consumption reduction of 15% and will reduce our electrical usage/cost and continue to reduce our carbon footprint.
614
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