An aggregate sand and gravel mining company planned to expand its operations in Kalamazoo County, including excavating below the water table to create a 96-acre lake. To support permitting under Michigan’s Part 301 (Inland Lakes & Streams) of the Natural Resources and Environmental Protection Act, 1994, PA 451, as amended, Fishbeck conducted a hydrogeologic study to evaluate potential impacts to groundwater, surface water, and nearby wetlands. The study involved field investigations, including installing eight monitoring wells, measuring water levels, and modeling groundwater flow. These efforts provided a detailed understanding of the site’s geology, aquifer properties, and hydrologic conditions. Groundwater was found to flow from southeast to northwest across the site through an aquifer of glacial sand and gravel. Groundwater modeling results showed that excavation and lake formation would cause only minor changes in groundwater levels. Estimated drawdowns at nearby wetlands and residential wells were small—typically less than 2.5 inches—and well within acceptable limits. Surface drainage will be contained within the excavation area, and no significant adverse effects on nearby hydrologic features were identified. This work provided the technical foundation required for regulatory review and helped confirm that the proposed mining expansion would not negatively impact surrounding environmental resources. The findings support continued mining operations at the site, and Michigan Department of Environment, Great Lakes, and Energy (EGLE) granted the Part 301 Permit.
