| CBChelsea Building Products | Oakmont | PA | — | ◇ UNVERIFIED |
| CPChemical Proof Corporation Site | Woodinville | WA | — | ◇ UNVERIFIED |
| CIChem-tainer Industries INC | Compton | CA | — | ◇ UNVERIFIED |
| CTChem Tech Plant 2 | Middlefield | OH | — | ◇ UNVERIFIED |
| CVChem Valley Machine | Nitro | WV | — | ◇ UNVERIFIED |
| CEChevron Environmental Management CO | Medinah | IL | — | ◇ UNVERIFIED |
| CAChicago Allis Mfg CORP | Chicago | IL | — | ◇ UNVERIFIED |
| CBChicago Board of Education | Chicago | IL | — | ◇ UNVERIFIED |
| CCChicago, City of | Chicago | IL | — | ◇ UNVERIFIED |
| CDChicago Dowel CO INC | Chicago | IL | — | ◇ UNVERIFIED |
| CHChicago Heights Processing | Chicago Heights | IL | — | ◇ UNVERIFIED |
| CWChicagoland Wholesale Mulch | Crest Hill | IL | — | ◇ UNVERIFIED |
| CPChicago Plas Prod Co/erie | Erie | PA | — | ◇ UNVERIFIED |
| CSChicago Sterilization Services | Chicago | IL | — | ◇ UNVERIFIED |
 Chief Industries INC Chief Transportation Products | Omaha | NE | — | ◇ UNVERIFIED |
| CEChristofano Equipment INC | Harwood Heights | IL | — | ◇ UNVERIFIED |
| CYCh Yates Rubber Company | Fall River | MA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop INC | Coatesville | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| CMCigas Machine Shop, INC. | Coatesville | PA | — | ◇ UNVERIFIED |
| CCignys | Saginaw | MI | — | ◇ UNVERIFIED |
| CPCima Plastics CORP | West Chicago | IL | — | ◇ UNVERIFIED |
| CRCimco Recycling INC | Sterling | IL | — | ◇ UNVERIFIED |
| CRCimco Recycling Ottawa INC | Ottawa | IL | — | ◇ UNVERIFIED |
| CKCircle K 6758 | Oak Park | IL | — | ◇ UNVERIFIED |
| CECircuit Etching Technics INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| CACitadel Architectural Products | Indianapolis | IN | — | ◇ UNVERIFIED |
| CICitiwaste INC | Joliet | IL | — | ◇ UNVERIFIED |
| COCity of Champaign | Champaign | IL | — | ◇ UNVERIFIED |
| COCity of Lexington | Lexington | IL | — | ◇ UNVERIFIED |
| COCity of Stephenville Landfill | Stephenville | TX | — | ◇ UNVERIFIED |
| CAClark Automatic | Rosedale | MD | — | ◇ UNVERIFIED |
| CPClarke Products INC. | Waco | TX | — | ◇ UNVERIFIED |
| CMClark Metal Prod CO | Blairsville | PA | — | ◇ UNVERIFIED |
| CNClayens Np USA INC | Crystal Lake | IL | — | ◇ UNVERIFIED |
| COClcm Oak Creek | Oak Creek | WI | — | ◇ UNVERIFIED |
| CTClean Tech Inc-dundee | Dundee | MI | — | ◇ UNVERIFIED |
| CWClearstream Wastewater Systems INC | Silsbee | TX | — | ◇ UNVERIFIED |
| CMCleasby Mfg of Denver | Westminster | CO | — | ◇ UNVERIFIED |
| CIClement Industries | Bedford Park | IL | — | ◇ UNVERIFIED |
| CPCleveland-cliffs Piedmont | Newton | NC | — | ◇ UNVERIFIED |
| CMClosed Molded INC | Grygla | MN | — | ◇ UNVERIFIED |
| CWClover Wire Forming | Yonkers | NY | — | ◇ UNVERIFIED |
| CLC L Rieckhoff CO | Taylor | MI | — | ◇ UNVERIFIED |
| CMC Mayo, INC | Springdale | AR | — | ◇ UNVERIFIED |
| CRCmc Rebar - Wa - Auburn | Auburn | WA | — | ◇ UNVERIFIED |
| CSCmc Steel Us, LLC | Nashville | TN | — | ◇ UNVERIFIED |
| CSCmt South Carolina L.l.c. | Estill | SC | — | ◇ UNVERIFIED |
| CPCoast Plastics INC | Ontario | CA | — | ◇ UNVERIFIED |
| C2Coatings 2000 | Charlotte | NC | — | ◇ UNVERIFIED |
| CTCoffman Truck Sales INC | Aurora | IL | — | ◇ UNVERIFIED |
| CCCoke Contracting INC | Chicago | IL | — | ◇ UNVERIFIED |
| CCColes County Dragway INC | Charleston | IL | — | ◇ UNVERIFIED |
| CMColfor Mfg Machining Div Minerva Operations | Minerva | OH | — | ◇ UNVERIFIED |
| CACollins Aerospace - Busch | Jacksonville | FL | — | ◇ UNVERIFIED |
| CACollins & Aikman Automotive Interiors | Morristown | IN | — | ◇ UNVERIFIED |
| CACollins & Aikman Corporation | Athens | TN | — | ◇ UNVERIFIED |
| CACollins & Aikman Sterling Heights Operation | Sterling Hts | MI | — | ◇ UNVERIFIED |
| CACollins and Aikman Plastics INC | Saint Joseph | MI | — | ◇ UNVERIFIED |
| CICollis INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| CICollis, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| CICollis Inc-ssw Enterprises | Clinton | IA | — | ◇ UNVERIFIED |
| CIColmac Industries Site | Colville | WA | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation | Denver | CO | — | ◇ UNVERIFIED |
| CSColonial Slitting Industries LLC | Weirton | WV | — | ◇ UNVERIFIED |
| CSColorado Sign Company | Englewood | CO | — | ◇ UNVERIFIED |
| CTColor Technology | Vancouver | WA | — | ◇ UNVERIFIED |
| CIColorware INC | Winona | MN | — | ◇ UNVERIFIED |
| CCColson Caster Corporation | Jonesboro | AR | — | ◇ UNVERIFIED |
| CCColson Caster - Monette | Monette | AR | — | ◇ UNVERIFIED |
| CBColumbia Business Center Bldg 33 | Vancouver | WA | — | ◇ UNVERIFIED |
| CQColumbia Quarry CO | Columbia | IL | — | ◇ UNVERIFIED |
| CSComed Streator | Streator | IL | — | ◇ UNVERIFIED |
| CBCommercial Building | Marysville | WA | — | ◇ UNVERIFIED |
| CFCommercial Floor Covering | Champaign | IL | — | ◇ UNVERIFIED |
| CHCommercial Honing CO | Fontana | CA | — | ◇ UNVERIFIED |
| CPCommercial Plastics Nebraska LLC | Waverly | NE | — | ◇ UNVERIFIED |
| CSCommercial Sheet Metal | Canton | MA | — | ◇ UNVERIFIED |
| CICom-pac International INC | Carbondale | IL | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing INC | Marion | MT | — | ◇ UNVERIFIED |
| CTComplex Tooling & Molding INC | Boulder | CO | — | ◇ UNVERIFIED |
 Composites Horizons INC | Covina | CA | — | ◇ UNVERIFIED |
| CTComposite Technologies Mi INC | Merritt Island | FL | — | ◇ UNVERIFIED |
| CTComposite Technology Assembly Plant 3 | Plymouth | IN | — | ◇ UNVERIFIED |
| CSCompx Securityproducts | River Grove | IL | — | ◇ UNVERIFIED |
| CBConant Ball CO | Gardner | MA | — | ◇ UNVERIFIED |
| CIConarc INC | Terryville | CT | — | ◇ UNVERIFIED |
| CCConcept Composites LLC | Hastings | NE | — | ◇ UNVERIFIED |
| CWConcord Wire Company | Worcester | MA | — | ◇ UNVERIFIED |
| CCCongoleum Corporation Plant No. 3 | Trainer | PA | — | ◇ UNVERIFIED |
| CSConnectivity Solutions Mfg Incorporated | Omaha | NE | — | ◇ UNVERIFIED |
| CCConnector Castings INC | Selmer | TN | — | ◇ UNVERIFIED |
| CIConnelly-gpm INC | Chicago | IL | — | ◇ UNVERIFIED |
| CPConroe Plastics Molding (cpm) | Conroe | TX | — | ◇ UNVERIFIED |
| CGConsolidated Grain & Barge CO | Lemont | IL | — | ◇ UNVERIFIED |
| CRConsolidated Resource Recovery INC | Clearwater | FL | — | ◇ UNVERIFIED |
| CAConstellium-uacj Abs LLC | Bowling Green | KY | — | ◇ UNVERIFIED |
| CTContanda Terminals | Riverdale | IL | — | ◇ UNVERIFIED |
 Contech Engineered Solutions LLC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| Contech Engineered Solutions LLC | Fort Pierce | FL | — | ◇ UNVERIFIED |
