Citizens For A Better Environment, an Illinois not-for-profit corporation, and the Environmental Protection Agency v. Engelhardt, Inc., an Illinois corporation, and the North Shore Sanitary District, a municipal corporation of the State of Illinois

CITIZENS FOR A BETTER ENVIRONMENT v. NORTH SHORE SANITARY DISTRICT and ENGELHARDT, INC. / ENVIRONMENTAL PROTECTION AGENCY v. ENGELHARDT, INC. and NORTH SHORE SANITARY DISTRICT