Village of Mayville Implements Improvements for Wastewater Lagoon and Sewer System
TUSCOLA COUNTY – The Village of Mayville, a community of roughly 950 people, owns and operates its own wastewater collection system and lagoon facility to convey and treat sanitary sewer waste. The system is a crucial part of the community’s infrastructure, and improvement efforts are currently in process to upgrade both the lagoon treatment system and collection system.
Lagoon Operations
involve taking in wastewater and naturally treating it by holding the water for a period of time.
While the water sits in the lagoon cells, it undergoes several biological processes. These processes are sped up by bacteria, oxygen, sunlight, and wind components to naturally clean the water. The Village of Mayville’s lagoon facility, located at the eastern end of Mills Street, is composed of two cells that were expanded in the 1970s. Although the community has followed a routine maintenance schedule on the lagoon, improvements were needed to meet state regulatory requirements.
The Michigan Department of Environment, Great Lakes, and Energy, which oversees state permitting of wastewater facilities, made recommendations to the Village of Mayville that the cells be completely drained and cleaned out to allow for the improvements to be made. In order to take a cell out of service for an extended period of time such as this, a third lagoon cell sized for 8 million gallons of working volume is currently being constructed in Phase I to prepare for the future Phase II rehabilitation of the two existing cells. Construction began in late 2022 and will be complete by this summer.
In order to meet today’s state requirements, lagoons must have an approved dual-liner system. For the future Phase II project, both of the existing cells will be cleaned, reshaped, and lined. All three cells will be equipped with a composite clay and geomembrane dual-liner system. The cells will also have a venting system installed beneath the new liners to ensure any gases are able to escape. The future Phase II construction on the two existing cells will take place after the addition of the third cell is fully completed.
Fisher Contracting
creating a berm on the northern side of the new lagoon cell.
Current construction efforts underway also include updating portions of the Village’s sanitary collection system which consists of 6.87 miles of gravity sewer, ranging in size from 6-inches to 12-inches. The system includes four sanitary pump stations with 0.66 miles of forcemain.
This division of the project includes sewer replacements on Fulton, Turner, and Pine Streets; Fifth Street pump station rehabilitation, Ohmer Road and Fox Street pump station replacements, 12-inch interceptor sewer CIPP lining, and manhole sewer repairs. The Fifth Street pump station’s pumps, wetwell piping, and electrical and controls will all be replaced. The Ohmer Road and Fox Street pump stations will be completely replaced with new duplex submersible pump stations and have permanent onsite natural gas backup generators. Construction on these efforts is slated to begin this spring.
Spicer Group
Was hired by the Village of Mayville to provide financial application assistance, engineering design, permitting assistance, and construction administration and inspection for the project.
The current work that is under contract received grant and loan funding from the United States Department of Agriculture Rural Development in the amount of $7.16 million. To make all the components of the project more manageable, it was split into divisions. The first division (A) includes all of the collection system improvements which is being carried out by American Excavating Ltd. The second division (B) for the lagoon cell construction is being done by Fisher Contracting. The upgrades being made to the lagoon and collection system will bring the community one step closer towards an efficient and easily maintainable system that will last the community through future years.