CITY OF OTTAWA v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
IN THE MATTER OF: JOINT PETITION OF THE CITY OF OTTAWA AND THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY FOR EXCEPTION TO THE COMBINED SEWER OVERFLOW REGULATIONS
IN THE MATTER OF: JOINT PETITION OF THE CITY OF OTTAWA AND THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY FOR EXCEPTION TO THE COMBINED SEWER OVERFLOW (CSO) REGULATIONS