The Environmental Protection Commission is proposing to amend various sections of Iowa Admin. Code r.567-64 general stormwater discharge permits for construction sites. Changes would implement federal guidelines, including requiring the preservation of at least four inches of topsoil at construction sites. Public hearings will be held beginning March 18, 2015, and the deadline for comment is April 1, 2015. See https://www.legis.iowa.gov/docs/aco/bulletin/02-18-2015.pdf (pp. 1480-82).