The link below will get you to the sites where you can find information and permit applications for high risk erosion and critical dunes information from the MDEQ (Michigan Department of Environmental Quality)
Regulations and permit requirements under Part 323, Shorelands Protection and Mgt. of the Nat. Resource and Env Prot Act 1994 PA 451 as amended (NREPA). Part 353, Sand Dunes Protection and Mgt.
Permits available at www.michigan.gov/jointpermit and more info on Crtiical Dunes under www.michigan.gov/deqsanddunes and high risk erosion under www.michigan.gov/deq/0,1607,7-135-3313_3677_3700---,00.html