VERMILLION, SD — Granite announces that its wholly owned subsidiary, Layne, A Granite Company, has been awarded an approximately $13 million contract by the Lewis and Clark Regional Water System (LCRWS) to construct two high-capacity horizontal collector wells within an existing wellfield adjacent to the Missouri River near Vermillion, South Dakota. The project is funded by federal and member sources and will be included in Granite’s third quarter CAP.
“This project exemplifies the breadth of our water supply construction capabilities, showcasing our expertise in delivering high-capacity water supply solutions in both groundwater and surface water environments,” said Gernot Penzhorn, Granite Vice President of Regional Operations. “It also highlights the regional diversity of our projects.”
Each well is designed with a pumping capacity of 25 million gallons per day (MGD), contributing a total of 50 MGD of raw water supply to the LCRWS. The wells will be constructed as 16-foot inner diameter concrete caissons, reaching an approximate depth of 135 feet.
“Lewis & Clark’s staff and engineers have enjoyed working with Layne on several different well projects through the years, including our first collector well,” LCRWS Executive Director Troy Larson said. “The top-notch professionals at Layne have always done a great job, and we are looking forward to working with them again on our next two collector wells. When completed, the three collector wells will be the heart and soul of our system that over 350,000 people are relying upon in the tri-state region.”
In 2021, Layne’s Ranney Collector Well group successfully constructed the first horizontal collector well for LCRWS at Site B, which produces over 20 MGD, approximately seven times more than any of the system’s conventional wells. The success of that project served as the catalyst for the design and construction of the two new horizontal collector wells at Site C.
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LCRWS is a wholesale provider of water to 20 member cities and rural water systems across southeast South Dakota, northwest Iowa, and southwest Minnesota. Layne has supported LCRWS for over two decades, offering professional hydrogeologic services, installation and redevelopment of water supply wells, and pump installation and maintenance.
Construction is expected to be completed in June 2028.
