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CCR Rule

CCR Rule Compliance Data and Information

On December 19, 2014, the U.S. Environmental Protection Agency (EPA) issued a final ruling for the regulation and management of coal combustion residuals (CCR or coal ash) under the Resource Conservation and Recovery Act. The rule, which was published to the federal register on April 17, 2015, establishes requirements for both existing and new CCR landfills and surface impoundments. The rules include:

  • Structural integrity requirements
  • Groundwater monitoring and corrective action
  • Location restrictions
  • Liner design criteria
  • Operating criteria
  • Record keeping, notification and internet posting

This internet site contains the information required by the CCR rule for each of Montana-Dakota Utilities’ coal-fired power plants.

R.M. Heskett Station
Lewis & Clark Station
Big Stone Station
Coyote Station