Meeting Summary
The city council held a work session to review the wastewater treatment and collection master plan. Consultants presented critical infrastructure needs, highlighting immediate improvements required for the aging South Wastewater Treatment Plant (estimated $11.4 million) to ensure regulatory compliance. Significant investments are also needed for the North Wastewater Treatment Plant (approx. $5.25 million) and the wastewater collection system (initial $1.5 million) to address inflow/infiltration and capacity issues. The total immediate capital investment discussed is approximately $17-20 million.
Financial Matters
South Wastewater Treatment Plant Headworks Improvements
Project to protect equipment and maintain regulatory compliance at the aging South Plant.
South Wastewater Treatment Plant Digester Improvements
Project to repair and improve the anaerobic digestion process for biosolids, crucial for compliance.
North Wastewater Treatment Plant Excess Flow Pump Station and Holding Basin
Critical improvement to handle wet weather flows and maintain plant operations.
North Wastewater Treatment Plant Septage Receiving Station
Construction of a modern, automated station to receive septage, with potential for revenue generation.
Wastewater Collection System Data Collection, Manhole Rehabilitation, CCTV, and Point Repairs
Initial phase of addressing inflow and infiltration (I&I) issues, including surveying manholes, sealing lids, and repairing damaged pipes.
Wastewater Collection System Pipe Capacity Upgrades
Potential upgrades for six existing pipes (27-inch to 30/36-inch) upstream of the South Plant, contingent on I&I reduction.
Coming Up
Tabled
- Miscellaneous South Plant projects (e.g., rotating arms, influence pump station rehab) can be deferred.
- Wastewater collection pipe capacity upgrades may be deferred pending results of I&I reduction.
Deadlines
- South Plant headworks and digester improvements recommended within the next five years to avoid permit rescission and ammonia limits.
- Wastewater collection data collection, manhole rehabilitation, and point repairs recommended within the next year.
Watch For
- Potential changes in permit limits (stream reclassification, EPA nutrient limits).
- Completion of the hydraulic model for the wastewater collection system.
- A cost of service study to determine financing methods for the capital projects.
Announcements
- The city is currently developing a FOG (Fats, Oils, and Grease) ordinance and will implement monitoring of grease traps to prevent issues in the system.
Agenda Summary
Master Plan Wastewater Treatment CIP
Presentation on the critical needs and recommended capital improvements for the South and North Wastewater Treatment Plants to ensure regulatory compliance and operational efficiency.
Wastewater Collections
Presentation on the wastewater collection system, focusing on inflow and infiltration issues, manhole conditions, pipe capacity, and necessary data collection and rehabilitation projects.