Current Projects: Pumping Station 17 Force Main Relief, Phase 2

Project Overview

The Madison Metropolitan Sewerage District’s Pumping Station 17 helps convey sanitary waste from the City of Verona and City of Madison to the Nine Springs Treatment Plant in a pressurized sewer known as a force main.  This force main was constructed in 1995.

Due to historic and projected growth in these areas and the fact that local pumping stations will soon reach their capacity, a second force main – known as a relief force main – is being constructed. The first phase of the force main relief project was completed in 2021. The second phase will complete the relief force main. Once complete, this relief force main will increase capacity to provide safe and reliable conveyance of wastewater while protecting public health and the environment.

What is a relief force main?   

A force main is a pressurized sanitary sewer that transports flow from a lower elevation to a higher elevation. Force mains allow sanitary waste to travel over challenging topography such as hills and ridge to then flow by gravity. Force mains are connected to a pumping station, which supplies the initial energy.

The word “relief” means that it is the second sewer of its kind along a stretch. Having a relief line conveys additional flows needed and provides system redundancy.

How will impacts to areas of concern (trees, wetlands, archeological etc.) be considered in the design?  

During early design, a desktop analysis was performed using available tree, wetland, and archeological data to identify and help avoid areas of concern. Surveys of the route are currently underway to inform route refinement to help avoid sensitive areas. These include a professional boundary survey, a tree survey, a wetland delineation, soil borings, and an archeological review. The data gathered from these surveys will inform route refinement to help avoid sensitive areas. During the route refinement stage, necessary and unavoidable impacts to areas of concern will be shared at the public information meeting. A map detailing trees anticipated to remain or be removed/replaced will also be publicly available on this webpage.   

Additionally, the project team is using the Institute for Sustainable Infrastructure’s ENVISION process as a guideline during the design process. This infrastructure-based rating system includes credits that focus on the preservation, protection and enhancement of the natural world.

Selected Route

The Madison Metropolitan Sewerage District has selected a route for the Pump Station 17 Rehabilitation & Force Main Relief Phase 2 project. The route was selected by the project design team after gaining input at the February 23, 2022 meeting, reviewing public feedback, consulting with stakeholder groups, and weighing considerations. 

Route Surveying Underway

The design consultant MSA Professional Services and their subconsultants will be proceeding with surveying this route. The area surveyed will consist of the route identified and other nearby property corners to determine property lines as necessary.  If you have any special concerns with surveyor access, please contact Kevin Lord at 608-242-6617 or klord@msa-ps.com. To identify below-ground utilities for the survey, Diggers Hotline utility locates will be completed. This will result in utility marking or flagging along the route.

Public Involvement

The District will hold three public information meetings for this project.

  • Meeting #1: Wednesday, Feb. 23, 2022, 5:30 – 6:30 p.m. 
  • Meeting #2: Tentatively July 2022, date TBD
    • The intent of this meeting is to discuss the selected route in further detail. This discussion will be informed by the completed surveys such as boundary, tree, wetland, archeology, and soil borings.

  • Meeting #3: TBD
    • The intent of the meeting is to present the final design and anticipated construction impacts.  

Postcards with information about the project meetings will be sent to residents within 400 feet of the project area.

Project details

Project Type:

Construction, Sewer Relief

Location:

This phase of the Pumping Station 17 Force main Relief will continue north of Arbor Vitae Place and run east to the Goose Lake area.

Impact:

Major

Schedule:

Design: November 2021-September 2022

Bid: September 2022 (tentative)

Construction: December 2022-December 2024 (TBD)

Status:

Design Phase

Project Contact:

Rachel Feil
608-628-1214

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