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Montana Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

As of July 02, 2014
Listed by County, Pollutant, then Area
Select a State:  
AK | AL | AR | AZ | CA | CO | CT | DC | DE | FL | GA | GU | IA | ID | IL | IN | KS | KY | LA | MA | MD | ME | MI | MN |
MO | MS | MT | NC | NE | NH | NJ | NM | NV | NY | OH | OR | PA | PR | RI | SC | TN | TX | UT | VA | WA | WI | WV | WY |
Important Notes
County   Pollutant   AreaName Nonattainment in Year Redesignation
to Maintenance
Classification Cty NA
Whole/
Part
Population
(2010)
FIPS
State/
Cnty
MONTANA
Cascade Co Carbon Monoxide (1971) Great Falls, MT
92 93 94 95 96 97 98 99 00 01                                                    
07/08/2002 Not Classified Part 57,573 30/013
Flathead Co PM-10 (1987) Columbia Falls, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 4,610 30/029
Flathead Co PM-10 (1987) Kalispell, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 18,422 30/029
Flathead Co PM-10 (1987) Flathead County; Whitefish and vicinity, MT
    93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 6,138 30/029
Lake Co PM-10 (1987) Polson, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 4,099 30/047
Lake Co PM-10 (1987) Ronan, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 2,734 30/047
Lewis And Clark Co Lead (1978) East Helena Area (Lewis and Clark Co.), MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ /   Part 2,669 30/049
Lewis And Clark Co Sulfur Dioxide (1971) East Helena Area (Lewis and Clark Co.), MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Primary, Secondary Part 2,669 30/049
Lincoln Co PM-10 (1987) Libby, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 3,378 30/053
Lincoln Co PM-2.5 (1997) Libby, MT
                                                    05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 9,429 30/053
Missoula Co Carbon Monoxide (1971) Missoula, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06                                
09/17/2007 Moderate <= 12.7ppm Part 59,733 30/063
Missoula Co PM-10 (1987) Missoula, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 59,733 30/063
Rosebud Co PM-10 (1987) Lame Deer, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 527 30/087
Sanders Co PM-10 (1987) Sanders County (part); Thompson Falls and vicinity, MT
        94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 1,317 30/089
Silver Bow Co PM-10 (1987) Butte, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Moderate Part 34,201 30/093
Yellowstone Co Carbon Monoxide (1971) Billings, MT
92 93 94 95 96 97 98 99 00 01                                                    
04/22/2002 Not Classified Part 104,360 30/111
Yellowstone Co Sulfur Dioxide (1971) Laurel Area (Yellowstone County), MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ / Primary Part 6,525 30/111
Yellowstone Co Sulfur Dioxide (2010) Billings, MT
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
/ /   Part 2,621 30/111
Important Notes

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