| SITE NAME | STATUS | STATE | CONG_DIST | Rep NAME |
| ARMY CREEK LANDFILL | construction complete | DE | 01 | Michael N. Castle (R) |
| CHEM-SOLV, INC. | construction complete | DE | 01 | Michael N. Castle (R) |
| COKER'S SANITATION SERVICE LANDFILLS | construction complete | DE | 01 | Michael N. Castle (R) |
| DELAWARE CITY PVC PLANT | construction complete | DE | 01 | Michael N. Castle (R) |
| DELAWARE SAND & GRAVEL LANDFILL | construction complete | DE | 01 | Michael N. Castle (R) |
| DOVER AIR FORCE BASE | Construction Complete | DE | 01 | Michael N. Castle (R) |
| DOVER GAS LIGHT CO. | Construction Complete | DE | 01 | Michael N. Castle (R) |
| E.I. DU PONT DE NEMOURS & CO., INC. (NEWPORT PIGMENT PLANT L | construction complete | DE | 01 | Michael N. Castle (R) |
| HALBY CHEMICAL CO. | construction complete | DE | 01 | Michael N. Castle (R) |
| HARVEY & KNOTT DRUM, INC. | construction complete | DE | 01 | Michael N. Castle (R) |
| KOPPERS CO., INC. (NEWPORT PLANT) | design underway | DE | 01 | Michael N. Castle (R) |
| MILLSBORO TCE | Proposal to NPL | DE | 01 | Michael N. Castle (R) |
| NCR CORP. (MILLSBORO PLANT) | construction complete | DE | 01 | Michael N. Castle (R) |
| NEW CASTLE SPILL | Deleted from NPL | DE | 01 | Michael N. Castle (R) |
| NEW CASTLE STEEL | Deleted from NPL | DE | 01 | Michael N. Castle (R) |
| SEALAND LIMITED | Deleted from NPL | DE | 01 | Michael N. Castle (R) |
| STANDARD CHLORINE OF DELAWARE, INC. | cleanup underway | DE | 01 | Michael N. Castle (R) |
| SUSSEX COUNTY LANDFILL NO. 5 | Deleted from NPL | DE | 01 | Michael N. Castle (R) |
| TYBOUTS CORNER LANDFILL | construction complete | DE | 01 | Michael N. Castle (R) |
| TYLER REFRIGERATION PIT | Deleted from NPL | DE | 01 | Michael N. Castle (R) |
| WILDCAT LANDFILL | Deleted from NPL | DE | 01 | Michael N. Castle (R) |