All aspects of Montana’s water quality standards reviewed every three years

The ROD explains the decision, the reasons for the decision, and the conditions surrounding the decision and its implementation.

Interior Department funds support and expand use of electronic coal permitting system developed by DEQ.

Comments being accepted on proposed sand and gravel mine

DEQ has continued to collect air quality information in the Billings airshed since 2010 and was able to demonstrate Billings is in compliance with this standard. In 2015 DEQ submitted monitoring data and analysis to EPA, along with a request to redesignate the area from “nonattainment” to “attainment.”