2017 Annual Report for MS4 Permit 2016 Annual Report for MS4 Permit 2015 Annual Report for MS4 Permit 2014 Annual Report for MS4 Permit 2013 Annual Report for MS4 Permit 2012 Annual Report for MS4 Permit 2011 Annual Report for MS4 Permit 2010 Annual Report for MS4 Permit 2009 Annual Report for MS4 Permit 2008 Annual Report for MS4 Permit 2005 Annual Report for MS4 Permit 2004 Annual Report for MS4 Permit