Project plan

Notice of Public Hearing on Proposed 2022 Project Plan for Sewage Treatment Plant and Collection System Upgrades

NOTICE OF PUBLIC HEARING

The City of Saline will hold a public hearing on the project 2022 Project Plan for Upgrading Sewage Treatment Plant and Collection System for the purpose of receiving comments from interested persons.

The hearing will take place at approximately 6:00 p.m. on June 13, 2022 at the following location: Saline City Hall, 100 North Harris Street, Saline, Michigan, 48176.

The objective of the proposed projects is to facilitate improvements to the City’s existing wastewater treatment plant and sanitary sewer collection system. The projects were identified through the Wastewater Treatment Plant Asset Management Plan, Wastewater Treatment Site Survey, and Sewerage System Assessment Report. The improvements are proposed to deal with aging infrastructure and improve the treatment capacity and operations of the treatment plant. The project will also include improvements to the existing collection system to accommodate sewer capacity and reduce infiltration into the system. The upgrades will help ensure the City continues to adequately treat wastewater streams in accordance with its existing National Pollutant Discharge Elimination System (NPDES) permit. The projects are proposed to be carried out over the next five years, as summarized below:

EGLE SRF Projects for FY2023

Project

Project cost

Phase I Wastewater Treatment Plant and Collection System Upgrades

$62,024,000

EGLE SRF Projects for FY2025

Project

Project cost

Rehabilitation of Sewers and Westbelt Structures

$4,609,000

EGLE SRF Fiscal Year 2027 Projects

Project

Project cost

Phase II Wastewater Treatment Plant Upgrades

$19,582,000

The opinion of the probable total cost of the project is $86,215,000 with an expected annual reduction of $29,400 in operating and maintenance costs. The proposed projects may not all be completed, depending on the needs identified as the fiscal year approaches.

Phase I improvements will include the following; improvement of the collection system and incoming sewer, construction of a 1.5 MG equalization pond, construction of an influent filtering and pumping building, modifications and expansion of the primary clarifier, improvements to the secondary treatment with construction of an aeration tank with fan and RAS pumping building, modifications and expansion of the final clarifier, digester modifications and improvements to the electrical, instrumentation and SCADA system.

The Westbelt sewer and structural rehabilitation includes the removal of inflow/seepage (I/I) sources and the replacement of 9,400 feet of the existing Westbelt sewer.

Phase II improvements will include the following; expansion of the primary and final clarifier and improvements to the solids handling system.

Beneficial impacts of the proposed projects include the elimination of infiltration from the collection system and reduced wet weather flows to the treatment plant. In addition, the likelihood of flooding and sewer backups in the collection system project areas will be reduced. Wastewater treatment projects will replace existing assets that have reached the end of their useful life and install more efficient equipment, resulting in energy savings, increased treatment efficiency and greater treatment capacity . The construction of the proposed equalization basin will allow the treatment plant to improve its operation during peak flows in rainy weather. The expansion of the treatment plant treatment systems will improve the treatment reliability and the treatment capacity of the system. Adverse impacts are all short term, including temporary disruption to surrounding areas due to construction, traffic disruption, dust and noise. There are no long-term negative impacts expected from any of the proposed projects.

The City plans to finance the construction of the SRF-eligible portion of the projects through low-interest loans from EGLE’s State Revolving Fund (SRF). The expected quarterly cost increase for a typical residential user for the projects will be as follows:

Fiscal year

Expected increase in quarterly usage costs if all planned projects are completed

2023

$67.41

2024

$75.38

2025

$19.13

2026

$19.12

2027

$19.13

2028

$19.12

2029

$11.23

2030

$11.23

Copies of the plan detailing the proposed projects will be available for inspection no later than May 13, 2022 at the following locations:

  • Saline City Hall, 100 North Harris Street, Saline, Michigan 48176, Monday through Friday, 8:30 a.m. to 5:00 p.m.
  • Saline Wastewater Treatment Plant, 247 Monroe Street, Saline, Michigan, 48176, Monday through Friday 7:00 a.m. to 3:00 p.m.
  • Saline District Library, 555 North Maple Road, Saline, Michigan, 48176, Monday through Thursday 9:00 a.m. to 9:00 p.m., Friday through Saturday 10:00 a.m. to 5:00 p.m., Sunday 1:00 p.m. to 5:00 p.m.

Written comments will be accepted up to three (3) days after the date of the public hearing. All written communications will be answered in the final project plan. Written comments should be sent to:

Mrs. Colleen O’Toole, City Manager, 100 North Harris Street, Saline, Michigan, 48176.