St. Mary’s Garden Subdivision Pump Station

In 2015, the City of Monroe contacted Spicer Group to evaluate the storm sewer system due to ongoing flooding concerns within the St. Mary’s Garden Subdivision. The study concluded that the flooding was a result of inadequately sized storm sewers, and the City petitioned to install new storm sewers to alleviate the flooding. Spicer Group provided engineering, design, construction staking, and administration services for this project, which was finalized in 2024. A key feature of the design was the underground stormwater pump station, essential for removing excess water from areas that couldn’t drain by gravity. This station features two 14-foot diameter wet wells, each equipped with two pumps running at a rate of 6,000 gallons per minute, designed to handle a 10-year storm. Additionally, a 27-inch diameter overflow pipe was installed for relief during storms exceeding the 10-year capacity.

To further improve drainage, approximately 7,000 lineal feet of 8-inch plastic header tiles were installed to connect yard drain basins to the main storm sewer, along with 5,000 lineal feet of new reinforced concrete pipes ranging from 12 to 42 inches in diameter under the roads. Every other house received a drainage catch basin for direct connection to the new system, ensuring proper sub-slab water removal. The total project cost $6.4 million, with funding support from the American Rescue Plan Act (ARPA) during the COVID-19 pandemic, allowing the City to proceed with the full scope of work as planned.