64 facilities in Montana (emissions)
| 42395 | 111-0023 | YELLOWSTONE ENERGY LIMITED PAR | Yellowstone | ( 2) |
| 42241 | 25-0008 | WILLISTON BASIN - MONARCH STAT | Fallon | ( 2) |
| 42233 | 17-0001 | WILLISTON BASIN - HATHAWAY STA | Custer | ( 2) |
| 42215 | 5 | WILLISTON BASIN - HARDIN COMPR | Big_Horn | ( 3) |
| 42240 | 25-0003 | WILLISTON BASIN - CABIN CREEK | Fallon | ( 1) |
| 42321 | 111-0007 | WESTERN SUGAR COOPERATIVE | Yellowstone | ( 4) |
| 42314 | 89-0006 | US ANTIMONY MINE & MILL | Sanders | ( 1) |
| 42302 | 9 | TVX MINERAL HILL - FIRST CHANC | Park | ( 1) |
| 42312 | 89-0003 | THOMPSON RIVER LUMBER | Sanders | ( 2) |
| 42213 | 10 | SWEETWATER GARNET INC. | Beaverhead | ( 2) |
| 42291 | 63-0006 | STONE CONTAINER | Missoula | ( 7) |
| 42276 | 53-0004 | STIMSON LUMBER - LIBBY | Lincoln | ( 1) |
| 42279 | 63-0001 | STIMSON LUMBER - BONNER | Missoula | ( 1) |
| 42317 | 95-0002 | STILLWATER MINING CO SMELTER | Stillwater | ( 1) |
| 42304 | 83-0002 | SIDNEY SUGAR FACILITY | Richland | ( 4) |
| 42280 | 63-0002 | ROSEBURG FOREST PRODUCTS | Missoula | ( 9) |
| 42310 | 87-0004 | ROSEBUD COUNTY WESTERN ENERGY | Rosebud | ( 1) |
| 42311 | 4 | RILEY CREEK LUMBER | Sanders | ( 1) |
| 42289 | 63-0004 | PYRAMID MTN LUMBER | Missoula | ( 2) |
| 42243 | 29-0005 | PLUM CREEK SAWMILL AT EVERGREE | Flathead | ( 2) |
| 42275 | 53-0002 | PLUM CREEK MFG LP - FORTINE | Lincoln | ( 1) |
| 42245 | 29-0008 | PLUM CREEK MANUFACTURING LP CO | Flathead | ( 6) |
| 42236 | 17-0005 | PHILIP SERVICES CORP. - INDUST | Custer | ( 1) |
| 42300 | 3 | PARK LUMBER COMPANY, INC. | Park | ( 1) |
| 42301 | 67-0002 | PARK COUNTY REFUSE DISTRICT | Park | ( 1) |
| 42268 | 41-0005 | OCEAN ENERGY INC. - HILL COUNT | Hill | ( 2) |
| 42218 | 5-0006 | OCEAN ENERGY INC STATION #103- | Blaine | ( 1) |
| 42216 | 5-0001 | OCEAN ENERGY INC BLAINE COUNTY | Blaine | ( 2) |
| 42232 | 15-0001 | OCEAN ENERGY INC - HAVRE PIPEL | Chouteau | ( 1) |
| 42320 | 105-0003 | NORTHERN BORDER PIPELINE CO S | Valley | ( 1) |
| 42309 | 85-0006 | N. BORDER PIPELINE CO STA. 3 | Roosevelt | ( 1) |
| 42262 | 31-0010 | MSU - CENTRAL HEATING PLANT | Gallatin | ( 2) |
| 42299 | 1 | MOUNTAIN INC. BULL MOUNTAIN MI | Musselshell | ( 1) |
| 42308 | 85-0005 | MONTOLA GROWERS INC | Roosevelt | ( 1) |
| 42393 | 111-0014 | MONTANA SULPHUR & CHEMICAL | Yellowstone | ( 2) |
| 42223 | 13-0004 | MONTANA REFINING | Cascade | ( 6) |
| 42235 | 17-0002 | MDU - MILES CITY | Custer | ( 1) |
| 42238 | 21-0005 | MDU - GLENDIVE | Dawson | ( 1) |
| 42229 | 13-0016 | MALMSTROM AFB | Cascade | ( 3) |
| 42265 | 35-0004 | MAIN LINE #1 | Glacier | ( 1) |
| 42303 | 77-0002 | LOUISIANA-PACIFIC - DEER LODGE | Powell | ( 1) |
| 42258 | 31-0004 | LOUISIANA-PACIFIC - BELGRADE | Gallatin | ( 2) |
| 42277 | 20 | LAFARGE CORPORATION | Missoula | ( 2) |
| 42397 | 2 | JTL GROUP, INC. | Yellowstone | ( 1) |
| 42257 | 29-0024 | JTL GROUP - KALISPELL | Flathead | ( 1) |
| 42260 | 31-0005 | HOLCIM US INC - TRIDENT PLANT | Gallatin | ( 2) |
| 42214 | 3-0018 | HARDIN GENERATOR PROJECT | Big_Horn | ( 1) |
| 42220 | 7-0002 | GRAYMONT FACILITY | Broadwater | ( 2) |
| 42251 | 29-0010 | F.H. STOLTZE LAND AND LUMBER C | Flathead | ( 1) |
| 42380 | 111-0013 | EXXONMOBIL BILLINGS REFINERY | Yellowstone | ( 13) |
| 42325 | 111-0011 | CONOCOPHILLIPS | Yellowstone | ( 24) |
| 42252 | 29-0012 | COLUMBIA FALLS ALUMINUM | Flathead | ( 5) |
| 42266 | 35-0009 | COBB STORAGE FIELD STATION 017 | Glacier | ( 2) |
| 42264 | 31-0013 | CITY OF BOZEMAN SANITARY LANDF | Gallatin | ( 1) |
| 42237 | 21-0002 | CENTURY - 021-0002 | Dawson | ( 1) |
| 42349 | 111-0012 | CENEX HARVEST STATES | Yellowstone | ( 31) |
| 42298 | 63-0021 | BORDEN CHEMICAL INC | Missoula | ( 1) |
| 42272 | 12 | BLACKFOOT FOREST PRODUCTS | Lewis_and_Clark | ( 1) |
| 42318 | 11 | BASIN EXPLORATION, INC. | Toole | ( 1) |
| 42212 | 1-0002 | BARRETTS MILL | Beaverhead | ( 1) |
| 42239 | 25-0001 | BAKER PLANT | Fallon | ( 1) |
| 42273 | 49-0013 | AUGUSTA MAIN LINE #3 (STA 051) | Lewis_and_Clark | ( 2) |
| 42270 | 43-0001 | ASH GROVE CEMENT | Jefferson | ( 2) |
| 42315 | 93-0015 | ADVANCED SILICON MATERIALS FAC | Silver_Bow | ( 2) |
total number of sources: 186 (home)