Montana Department of Environmental Quality
1520 East Sixth Avenue
Helena, MT 59620-0901

Greg Smith
406.444.6274
gsmith2 [at] mt.gov

Roy Duelfer
406.444.5342
rduelfer [at] mt.gov

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• Assessment, TMDL Tracking And ImplementatioN System - ATTAINS
• Emissions Inventory System - EIS
• Facility Identification - FacID
• ICIS-Air
• National Hydrography Dataset Events - NHDEvent
• NetDMR
• Safe Drinking Water Information System - SDWIS
• Underground Injection Controls - UIC
• Water Quality Exchange - WQX

• RCRAInfo