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Title: Environmental Assessment : Portage Lake North Revetment Slope Reduction (2H:1V) and Fill Adjacent to the Federal Pier at Portage Lake, Lake Michigan, Onekama Township, Manistee County, Michigan
Authors: United States. Army. Corps of Engineers. Detroit District.
Keywords: Portage Lake (Mich.)
Environmental management
Environmental protection
Publisher: United States. Army. Corps of Engineers. Detroit District.
Abstract: The U.S. Army Corps of Engineers, Detroit District (Corps), has conducted an environmental analysis in accordance with the National Environmental Policy Act of 1969, as amended. The Corps assessed the effects of the following actions in the Environmental Assessment, dated September 2017 for the Portage Lake North Revetment Slope Reduction (2H:1V) and Fill Adjacent the Federal Pier at Portage Lake. This report is incorporated by reference. Project Descriptions for slope reduction and wetland fill -- In addition to the "no action" alternative, two alternatives were evaluated, including the recommended plan. The recommended plan was identified as the environmentally preferred alternative and consists of slope reduction within the state designated critical dune by removing approximately 330 cubic yards of sand from a 150 foot by 20 foot area to reduce the load on the Federal harbor revetment at Portage Lake, Michigan and the filling of 0.29 acres of open waters, 80 percent of which is located on top of the failing Federal revetment. All practicable means to avoid and minimize adverse environmental effects have been incorporated into both recommended plans. Implementing both recommended plans would not result in any impacts to Federally listed threatened or endangered species or their designated critical habitat, would have no impact to sites listed on or eligible for inclusion on the National Register of Historic Places, and would not affect any important wildlife habitat. The loss of open waters is less than 1/3 acres and therefore, no compensatory mitigation is required.
Description: Environmental Assessment
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Environmental Documents

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