Regional Wastewater Control FacilityModifications Project Update Council Water Committee
August 19, 2026
Agenda Item No. 26-0918
Presentation Outline
Project Drivers
New Facilities
Key Milestones
Cost Summary & Funding Sources
Future Projects
Project Drivers
Comply with New Discharge Limits
Modernize Treatment Process, Structures, and Equipment
Replace Outdated and Deteriorated Personnel Buildings
Enhance Energy Efficiency
New Facilities
Headworks and Influent Pumps
Replacement Headgates and Fine Screens
Screenings Washer/Compactors
Influent Pump Station
Grit Capture and Dewatering Equipment
Primary Treatment System
Rehabilitated Primary Clarifiers and Pumps
Secondary Treatment System
Aeration Basins and Blowers
Secondary Clarifiers
Tertiary Treatment System and Discharge
Cloth Media Filters
UV Channels
Final Effluent Pump Station With Gravity Gate
East Bank Outfall
New Facilities (cont.)
Solids Pumping and Treatment
WAS Pump Station
Digested Sludge Pumps
Biosolids Dewatering Centrifuge System (with space for two additional) Biosolids Storage and Handling Pad
Filtrate/Centrate Tank and Pumps
Standby Generator
Vactor Dump Station
Additional and Refurbished Workspaces
Administration and Engineering
Operations
Maintenance and Collections Division
Water Quality Laboratory
Stores Warehouse and Distribution
Control System Replacements
Key Milestones
January 2017: selected JV (WM Lyles/AECOM)
January 2019: completed initial design and construction cost determination Fall 2019: construction began
July 2022: secondary process online
April 2025: last personnel building occupied
July 2026: filtration & disinfection completed
August 2026: substantial & final completion
Cost Summary & Funding Sources
Authorized Budget: approximately $248M
Expended To Date: approximately $241M
Water Infrastructure and Innovation Financing Act (WIFIA) $108M, Accepted by Council July 2019
Clean Water State Revolving Fund (CWSRF)
$46.8M, Accepted by the City Council, November 2021
City Wastewater Fund
Pay-go
Rates set in 2019 to fund the project
SRF and WIFIA Payments Now Due
Future Projects
Additional Digesters
Additional Centrifuges
Permanent Polymer Dosing System
Additional Electrical & Control System Upgrades
Repurposed Ponds and Wetland
Spoils Site Cleanup
QUESTIONS?