List of Superfund sites in Colorado Superfund sites Superfund sites

| CERCLIS_ID | Name_ | County | Proposed | Listed | Construction_completed | Partially_deleted |
|---|---|---|---|---|---|---|
| COD980499248 | Lowry Landfill | Arapahoe | 10/08/1983 | 09/21/1984 | 09/28/2006 | – |
| COD980499255 | Marshall Landfill | Boulder | 12/30/1982 | 09/08/1983 | 08/25/1993 | – |
| CON000802630 | Nelson Tunnel/Commodore Waste Rock | Mineral | 03/19/2008 | 09/03/2008 | – | – |
| CO7890010526 | Rocky Flats Plant ( DOE ) | Jefferson | 07/14/1989 | 11/21/1989 | 09/29/2006 | 05/25/2007 |
| CO5210020769 | Rocky Mountain Arsenal ( US Army ) | Adams | 10/15/1984 | 07/22/1987 | – | 01/21/2003 01/15/2004 07/31/2006 |
| COD980717953 | Sand Creek Industrial | Adams | 12/30/1982 | 09/08/1983 | 09/29/1994 | – |
| COD983769738 | Smeltertown | Chaffee | 02/07/1992 | – | – | – |
| COD980806277 | Smuggler Mountain | Pitkin | 10/15/1984 | 06/10/1986 | 09/26/1996 | – |
| CO0002378230 | Standard mine | Gunnison | 04/27/2005 | 09/14/2005 | – | – |
| COD983778432 | Summitville mine | Rio Grande | 05/10/1993 | 05/31/1994 | – | – |