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Montana Whole or Part County Nonattainment Status by Year Since 1978 for all Criteria Pollutants

As of July 02, 2014
Listed by State, County, Pollutant (W=Whole County,P=Partial County designated nonattainment as of report date)
Select a State:  
AK | AL | AR | AZ | CA | CO | CT | DC | DE | FL | GA | GU | HI | IA | ID | IL | IN | KS | KY | LA | MA | MD | ME | MI | MN | MO |
MS | MT |NC | ND | NE | NH | NJ | NM | NV | NY | OH | OK | OR | PA | PR | RI | SC | TN | TX | UT | VA | VT | WA | WI | WV | WY |

Important Notes

MONTANA
County Pollutant 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
Cascade County Carbon Monoxide (1971) P P P P P P P P P P P P P P P P P P P P P
Deer Lodge County Sulfur Dioxide (1971) P P P P P
Flathead County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P
Lake County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Lewis And Clark County Lead (1978) P P P P P P P P P P P P P P P P P P P P P P P
Lewis and Clark County Sulfur Dioxide (1971) P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P
Lincoln Co PM-2.5 (1997) P P P P P P P P P P
Lincoln County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Missoula County Carbon Monoxide (1971) P P P P P P P P P P P P P P P P P P P P P P P P P P P P P
Missoula County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Rosebud County 1-Hr Ozone (1979) W
Rosebud County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Sanders County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P
Silver Bow County PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Yellowstone Co Sulfur Dioxide (2010) P P
Yellowstone County 1-Hr Ozone (1979) W W W
Yellowstone County Carbon Monoxide (1971) P P P P P P P P P P P P P P P P P P P P P P P P
Yellowstone County Sulfur Dioxide (1971) P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P


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