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Montana

33 Military Installations with Hazardous Sites in Montana

Total Cost

$177M

Past and estimated future cost of the cleanup of hazardous sites.

Installations

33

Military installations with at least one hazardous site.

High & Medium Risk Installations

6

Military installations with at least one high or medium risk hazardous site.

High Risk

Medium Risk

Low Risk

Risk Not Evaluated or Not Required

Response Complete

Note: This map shows the locations of military installations with hazardous sites. We haven't independently confirmed the location of every installation. If you notice a facility listed at the wrong location, please contact us. The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Military Installation Haz. Sites City or Nearby Location County Highest Risk
MALMSTROM AIR FORCE BASE 58 GREAT FALLS Cascade Risk Not Evaluated or Not Required
JFHQ MT ARNG 41 FORT HARRISON Lewis And Clark High Risk
FORT MISSOULA 22 MISSOULA Missoula Response Complete
FORT WILLIAM HENRY HARRISON 14 FORT HARRISON Lewis And Clark Risk Not Evaluated or Not Required
GREAT FALLS INTERNATIONAL... 12 GREAT FALLS Cascade Risk Not Evaluated or Not Required
USARC BILLINGS (AMSA 5-G) 11 BILLINGS Yellowstone Response Complete
USARC HELENA (ECS 6) 10 HELENA Lewis And Clark Response Complete
KALISPELL AFRC 8 KALISPELL Flathead Response Complete
GLASGOW AFB 6 GLASGOW Valley High Risk
FORT MISSOULA ARNG 6 MISSOULA Lewis And Clark Risk Not Evaluated or Not Required
USARC GREAT FALLS 5 GREAT FALLS Cascade Response Complete
BUTTE AFRC 5 BUTTE Silver Bow Response Complete
HELENA AFRC 5 HELENA Lewis And Clark Response Complete
GLASGOW ARMY AIR FIELD 3 GLASGOW Valley Response Complete
LEWISTOWN ARMY AIR FIELD 3 LEWISTOWN Fergus Medium Risk
DEL BONITA AFS 2 PORT OF DEL BONITA Glacier Response Complete
OPHEIM AFS Z-26 2 OPHEIM Valley Response Complete
SWEETGRASS GAP FILLER ANX 1 SWEETGRASS Toole Response Complete
GLASGOW PATTERN GUN RGE 1 GLASGOW Valley Response Complete
USARC BOZEMAN 1 BOZEMAN Gallatin Response Complete
GREAT FALLS PATTERN BOMB RGE 1 31 MI NE GREAT FLS Chouteau Medium Risk
LEWISTOWN PATTERN GUN RGE 1 GRASSRANGE Fergus Response Complete
GLASGOW PATTERN BOMB RGE 1 GLASGOW Valley Medium Risk
FORT PECK AER GUN RGE 1 GLASGOW Valley Response Complete
BROWNING GAP FILLER ANNEX... 1 BABB Glacier Response Complete
LEWISTOWN PATTERN BOMB RGE 1 WINNETT Petroleum Medium Risk
FT W H HARRISON ARMY POST 1 HELENA Lewis And Clark Response Complete
BILLINGS NMCRC 1 BILLINGS Yellowstone Response Complete
GREAT FALLS PATTERN GUN RGE 1 FORT BENTON Chouteau Response Complete
GLASGOW WAT SYS AX #2 1 GLASGOW Valley Response Complete
GALATA GAP FILLER ANNEXX... 1 19 MI N OF GALATA Toole Response Complete
GLENDIVE GAP FI AX TM177A 1 GLENDIVE Dawson Response Complete
BUTTE NRF 1 BUTTE Silver Bow Response Complete

Update (Dec. 5, 2017): We have changed the source of the installation cost data after being notified by the Department of Defense that they erroneously reported their own cost figures on the DERP website. We are now displaying the costs the department says are the most accurate available, from the Pentagon’s DERP database that we received in a FOIA request.

Note: The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Data: All data comes from the Defense Environmental Restoration Program and the U.S. Army Corps of Engineers, and will be released soon at the ProPublica Data Store. Read our methodology »