Smelter National Priority List Site

The Anaconda Smelter National Priority List (NPL) Site is located at the southern end of the Deer Lodge Valley. For more information about the site’s organization, updates on remediation decisions and cleanup, or how the community is positively using former Superfund lands visit the website of our Technical Assistant Grant (TAG) group, the Arrowhead Foundation.

Operable Units

The Anaconda Smelter NPL Site consists of five Operable Units (OUs). These Operable Units are:

  • Anaconda Regional Water, Waste & Soils OU (ARWW&S OU)
  • Community Soils OU (CS OU)
  • Flue Dust OU
  • Mill Creek OU
  • Old Works/East Anaconda Development Area OU (OW/EAD OU)

Remedial Design Units

The Environmental Protection Agency further subdivided the ARWW&S OU into fifteen Remedial Design Units (RDUs). The following are a list of RDUs:

  1. RDU 1 - Stucky Ridge Uplands
  2. RDU 2 - Lost Creek Uplands
  3. RDU 3 - Smelter Hill Uplands
  4. RDU 4 - Anaconda Ponds Waste Management Area (WMA)
  5. RDU 5 - Active Railroad/Blue Lagoons
  6. RDU 6 - South Opportunity Ponds Uplands
  7. RDU 7 - North Opportunity Ponds Uplands
  8. RDU 8 - Opportunity Ponds
  9. RDU 9 - Fluvial Tailings
  10. RDU 10 - Warm Springs Creek
  11. RDU 11 - Cashman Concentrate
  12. RDU 12 - Slag
  13. RDU 13 - Old Works Waste Management Area (WMA)
  14. RDU 14 - Smelter Hill Facility Area Waste Management Area (WMA)
  15. RDU 15 - Mount Haggin Uplands