Original rule filed July 29, 1986; effective October 29, 1986. Amendment filed April 23, 1993; effective July 28, 1993. Amendment filed November 26, 1997; effective March 30, 1998. Amendments filed September 20, 2007; effective January 28, 2008. Amendments filed October 29, 2009; effective March 31, 2010. Repeal filed August 10, 2011; effective January 29, 2011.