Superfund Information Systems: Site Profile

Superfund Site:

MIDNITE MINE
WELLPINIT, WA

Operable Units

During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.

OU ID Name Types of Contaminants
Present at the Time of
ROD Completion
Cleanup Technologies Selected
in the Decision Document
00 SITEWIDE
01 REMEDIAL
  • ALUMINUM (METAL)
  • BARIUM
  • BERYLLIUM
  • CADMIUM
  • CHROMIUM
  • COBALT
  • COPPER
  • LEAD
  • LEAD-210
  • MANGANESE
  • NICKEL
  • RADIUM-226
  • RADON
  • SELENIUM
  • SILVER
  • URANIUM
  • URANIUM-234
  • URANIUM-238
  • VANADIUM, METAL AND/OR ALLOY
  • ZINC
  • Consolidate (onsite)
  • Containment (other, NOS, onsite)
  • Discharge (other, NOS)
  • Drainage/Erosion Control (other, NOS)
  • Engineering Control (other, NOS)
  • Excavation
  • Extraction (recovery/vertical well)
  • Institutional Controls
  • Monitored Natural Attenuation
  • Monitoring
  • Operations & Maintenance (O&M)
  • Precipitation (P&T, exsitu)
  • Revegetation

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