The Department of Natural Resources is holding a public hearing Sept.15 regarding state rule changes governing the spreading of manure on soils in certain sensitive areas of the state. The changes, under Ch. NR 151, Wis. Adm. Code, relate to shallow soils over “karst topography,” which are areas where the bedrock may be fractured. Some of the proposed changes to NR 151 may be based on recommendations in the Groundwater Collaboration Workgroup final report, issued in June 2016. An informational meeting and Q&A will start at noon and the public hearing will start at 1 p.m. The hearing will be held Sept. 15 at the Phoenix Room, University Union, UW-Green Bay. The hearing will also be broadcast at the same time in Madison at the Wisconsin Natural Resource Building, Room G09, 101 S. Webster St., Madison.