Superfund Information Systems: Site Profile

Superfund Site:

WESTLAKE LANDFILL
BRIDGETON, MO

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 SITE EVALUATION/DISPOSITION
01 RAD WASTE CELLS
  • AROCLOR 1254
  • ARSENIC
  • LEAD
  • LEAD-210
  • METHANE
  • RADIUM-226
  • RADON
  • SELENIUM
  • THORIUM-230
  • THORIUM-232
  • URANIUM
  • URANIUM-234
  • URANIUM-235
  • URANIUM-238
  • Cap (engineered cap)
  • Consolidate (onsite)
  • Drainage/Erosion Control (other, NOS)
  • Excavation
  • Institutional Controls
  • Monitoring
  • Monitoring (landfill gas)
  • Slope Stabilization
02 LANDFILL
  • ARSENIC
  • BENZENE
  • CHLORIDE
  • CHLOROETHENE (VINYL CHLORIDE)
  • FLUORIDE
  • IRON
  • MANGANESE
  • METHANE
  • TOTAL DISSOLVED SOLIDS (TDS)
  • TOTAL PETROLEUM HYDROCARBONS (TPH)
  • VOC
  • Cap (engineered cap)
  • Drainage/Erosion Control (other, NOS)
  • Gas Pressure Controls
  • Institutional Controls
  • Monitoring
  • Monitoring (landfill gas)
03 GROUNDWATER

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