Sites in Illinois
- Acme Solvent Reclaiming, Inc. (morristown Plant): Morristown, IL
- Adams County Quincy Landfills 2&3: Quincy, IL
- Amoco Chemicals (joliet Landfill): Joliet, IL
- Asarco Taylor Springs: Taylor Springs, IL
- Bautsch-gray Mine: Galena, IL
- Beloit Corp.: Rockton, IL
- Belvidere Municipal Landfill: Belvidere, IL
- Byron Salvage Yard: Byron, IL
- Central Illinois Public Service Co.: Taylorville, IL
- Chemetco: Hartford, IL
- Cross Brothers Pail Recycling (pembroke): Pembroke Township, IL
- Depue/new Jersey Zinc/mobil Chemical Corp.: Depue, IL
- Dupage County Landfill/blackwell Forest Preserve: Warrenville, IL
- Eagle Zinc Co Div T L Diamond: Hillsboro, IL
- Galesburg/koppers Co.: Galesburg, IL
- H.o.d. Landfill: Antioch, IL
- Hegeler Zinc: Danville, IL
- Indian Refinery-texaco Lawrenceville: Lawrenceville, IL
- Interstate Pollution Control, Inc.: Rockford, IL
- Jennison-wright Corporation: Granite City, IL
- Johns-manville Corp.: Waukegan, IL
- Joliet Army Ammunition Plant (load-assembly-packing Area): Joliet, IL
- Joliet Army Ammunition Plant (manufacturing Area): Joliet, IL
- Kerr-mcgee (kress Creek/west Branch Of Dupage River): Dupage County, IL
- Kerr-mcgee (residential Areas): West Chicago , IL
- Lake Calumet Cluster: Chicago, IL
- Lasalle Electric Utilities: La Salle, IL
- Lenz Oil Service, Inc.: Lemont, IL
- Matthiessen And Hegeler Zinc Company: La Salle, IL
- Mig/dewane Landfill: Belvidere, IL
- Nl Industries/taracorp Lead Smelter: Granite City, IL
- Ottawa Radiation Areas: Ottawa, IL
- Outboard Marine Corp.: Waukegan, IL
- Pagel's Pit: Rockford, IL
- Parsons Casket Hardware Co.: Belvidere, IL
- Sandoval Zinc Company: Sandoval, IL
- Sangamo Electric Dump/crab Orchard National Wildlife Refuge (usdoi): Carterville, IL
- Savanna Army Depot Activity: Savanna, IL
- Southeast Rockford Ground Water Contamination: Rockford, IL
- Tri-county Landfill Co./waste Management Of Illinois, Inc.: Elgin, IL
- Velsicol Chemical Corp. (marshall Plant): Marshall, IL
- Wauconda Sand & Gravel: Wauconda, IL
- Woodstock Municipal Landfill: Woodstock, IL
- Yeoman Creek Landfill: Waukegan, IL