The Pollution Control Board amended 35 Ill. Admin. Code §304, Effluent Standards. The amendment establishes effluent limits from March 1 through November 30 for effluent discharges to primary contact recreation use water segments of the Chicago Area Waterway System. The amendment took effect February 2, 2012. See http://www.cyberdriveillinois.com/departments/index/register/register_volume36_issue7.pdf (pp. 2586-91).