The Department of Natural Resources will hold public hearings on revisions to ch. NR 446, Wis. Adm. Code, relating to the establishment of provisions for coal-fired electric generating units in Wisconsin to limit mercury air emissions. The SIP developed under §285.11(6), Stats., is also being revised. The hearings will be held April 7, 2008. Comments are due April 14, 2008. http://www.dnr.state.wi.us/org/caer/ce/news/hearmeet.html.