Wetlands Delineation Report

Bureau of Mines

engineering-environmental Management Inc. (e²M) was contracted by the National Park Service, to conduct a wetlands investigation on an approximate 27.32-acre parcel consisting of the former Bureau of Mines Twin Cities Research Center Main Campus (Center), Hennepin County, Minnesota. The Mississippi National River and Recreation Area has been designated by Congress to lead the public planning process pursuant to the National Environmental Policy Act of 1969, to address the disposition of the Center (NPS 2005). The site is characterized by vacant buildings, storage sheds, parking lots, mowed grassy upland fields, emergent wetlands, forested wetlands, upland forests, and two small shallow ponds. On June 15, 2005, e²M performed a delineation of potential wetlands. Once the wetlands boundary delineation had been completed, e²M arranged an onsite meeting with a technical evaluation panel to review the wetlands boundary line. The technical evaluation panel consisted of regulatory representatives from the U.S. Army Corps of Engineers, the Minnesota Board of Water and Soil Resources, the Minnehaha Creek Watershed District, the Hennepin Conservation District, and the National Park Service. The technical evaluation panel reviewed the wetlands boundary delineation and determined the delineation was generally accurate. One small adjustment of approximately 20 square feet was incorporated into an emergent wetlands. There are seven wetland areas within the 27.32-acre parcel of the Center, encompassing 2.4575 acres. Emergent wetlands encompass 0.8603 acres, and forested wetlands encompass 1.5972 acres. Streams and culverts exiting the site encompass an additional 0.0198 acres.

Wetlands Delineation Report

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