40 CFR 81.327 - Montana.

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§ 81.327 Montana.
Montana—SO2
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Laurel Area X
East Helena Area X X
Anaconda Area X
Rest of State X
Montana—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
1 This date is November 15, 1990, unless otherwise noted.
Billings Area
Yellowstone County (part):
The following areas of Yellowstone Co. (Range and Township) sections: R25E T1N—Sections 24 through 27 and 34 through 36; R25E T1S—Sections 1, 2, and 12; R26E T1N Sections 19 through 22 and 27 through 34; R26E T1S Sections 2 through 11 and 15 through 18. April 22, 2002. Attainment
Great Falls Area July 8, 2002 Attainment
Cascade County (part)
Great Falls designated area: North boundary—9th Avenue South or its straight line extension; East boundary—54th Street South or its straight line extension; South boundary—11th Avenue South or its straight line extension; West boundary—2nd Street South or its straight line extension
Missoula Area:
Missoula County (part) September 17, 2007 Attainment
Missoula and vicinity including the following (Range and Township) sections: R19W T14N—sections: 29 and 32; R19W T13N—sections 2, 5, 7, 8, 11, 14 through 24, and 26 through 34; R19W T12N—sections: 4 through 7; R20W T13N—sections: 23 through 26, 35 and 36
Beaverhead County Unclassifiable/Attainment
Big Horn County (part) excluding Crow, Northern Cheyenne Indian Reservations Unclassifiable/Attainment
Blaine County (part) excluding Fort Belknap Indian Reservation Unclassifiable/Attainment
Broadwater County Unclassifiable/Attainment
Carbon County Unclassifiable/Attainment
Carter County Unclassifiable/Attainment
Cascade County (part)
Remainder of Cascade County Unclassifiable/Attainment
Chouteau County (part) excluding Rocky Boy Indian Reservation Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Daniels County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Dawson County Unclassifiable/Attainment
Deer Lodge County Unclassifiable/Attainment
Fallon County Unclassifiable/Attainment
Fergus County Unclassifiable/Attainment
Flathead County (part) excluding Flathead Indian Resevation Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Glacier County (part) excluding Blackfeet Indian Reservation Unclassifiable/Attainment
Golden Valley County Unclassifiable/Attainment
Granite County Unclassifiable/Attainment
Hill County (part) excluding Rocky Boy Indian Reservation Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Judith Basin County Unclassifiable/Attainment
Lake County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Lewis and Clark County Unclassifiable/Attainment
Liberty County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
McCone County Unclassifiable/Attainment
Meagher County Unclassifiable/Attainment
Mineral County Unclassifiable/Attainment
Missoula County (part)
Remainder of Missoula County Unclassifiable/Attainment
Musselshell County Unclassifiable/Attainment
Park County Unclassifiable/Attainment
Petroleum County Unclassifiable/Attainment
Phillips County (part) excluding Fort Belknap Indian Reservation Unclassifiable/Attainment
Pondera County (part) excluding Blackfeet Indian Reservation Unclassifiable/Attainment
Powder River County Unclassifiable/Attainment
Powell County Unclassifiable/Attainment
Prairie County Unclassifiable/Attainment
Ravalli County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Roosevelt County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Rosebud County (part) excluding Northern Cheyenne Indian Reservation Unclassifiable/Attainment
Sanders County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Sheridan County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Silver Bow County Unclassifiable/Attainment
Stillwater County Unclassifiable/Attainment
Sweet Grass County Unclassifiable/Attainment
Teton County Unclassifiable/Attainment
Toole County Unclassifiable/Attainment
Treasure County Unclassifiable/Attainment
Valley County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Wheatland County Unclassifiable/Attainment
Wibaux County Unclassifiable/Attainment
Yellowstone County (part)
Remainder of Yellowstone County Unclassifiable/Attainment
Yellowstone National Park Unclassifiable/Attainment
Blackfeet Indian Reservation Unclassifiable/Attainment
Glacier County (part)
area inside Blackfeet Reservation
Pondera County (part)
area inside Blackfeet Reservation
Crow Indian Reservation Unclassifiable/Attainment
Bighorn County (part)
area inside Crow Reservation
Yellowstone (part)
area inside Crow Reservation
Flathead Indian Reservation Unclassifiable/Attainment
Flathead County (part)
area inside Flathead Reservation
Lake County (part)
area inside Flathead Reservation
Missoula County (part)
area inside Flathead Reservation
Sanders County (part)
area inside Flathead Reservation
Fort Belknap Indian Reservation Unclassifiable/Attainment
Blaine County (part)
area inside Fort Belknap Reservation
Phillips County (part)
area inside Fort Belknap Reservation
Fort Peck Indian Reservation Unclassifiable/Attainment
Daniels County (part)
area inside Fort Peck Reservation
Roosevelt County (part)
area inside Fort Peck Reservation
Sheridan County (part)
area inside Fort Peck Reservation
Valley County (part)
area inside Fort Peck Reservation
Northern Cheyenne Indian Reservation Unclassifiable/Attainment
Bighorn County (part)
area inside Northern Cheyenne Reservation
Rosebud County (part)
area inside Northern Cheyenne Reservation
Rocky Boy Indian Reservation Unclassifiable/Attainment
Chouteau County (part)
area inside Rocky Boy Reservation
Hill County (part)
area inside Rocky Boy Reservation
Montana—1978 Lead NAAQS
Designated Area Designation Classification
Date Type Date Type
Lewis & Clark County (part)
City of East Helena and vicinity 1/6/92 Nonattainment
Northern boundary - horizontal universal transverse mercatur(UTM) 5,162,000 mN; eastern boundary - vertical UTM 432,500 mE; southern boundary - horizontal UTM 5,158,000 mN; western boundary - vertical UTM 427,000 mE
Rest of State Not Designated
Montana—Ozone (1-Hour Standard)2
Designated area Designation Classification
Date 1 Type Date 1 Type
1 This date is October 18, 2000, unless otherwise noted.
2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Montana.
Beaverhead County Unclassifiable/Attainment
Big Horn County (part) excluding Crow, Northern Cheyenne Indian Reservations Unclassifiable/Attainment
Blaine County (part) excluding Fort Belknap Indian Reservation
Broadwater County Unclassifiable/Attainment
Carbon County Unclassifiable/Attainment
Carter County Unclassifiable/Attainment
Cascade County Unclassifiable/Attainment
Chouteau County (part) excluding Rocky Boy Indian Reservation Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Daniels County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Dawson County Unclassifiable/Attainment
Deer Lodge County Unclassifiable/Attainment
Fallon County Unclassifiable/Attainment
Fergus County Unclassifiable/Attainment
Flathead County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Glacier County (part) excluding Blackfeet Indian Reservation Unclassifiable/Attainment
Golden Valley County Unclassifiable/Attainment
Granite County Unclassifiable/Attainment
Hill County (part) excluding Rocky Boy Indian Reservation Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Judith Basin County Unclassifiable/Attainment
Lake County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Lewis and Clark County Unclassifiable/Attainment
Liberty County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
McCone County Unclassifiable/Attainment
Meagher County Unclassifiable/Attainment
Mineral County Unclassifiable/Attainment
Missoula County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Musselshell County Unclassifiable/Attainment
Park County Unclassifiable/Attainment
Petroleum County Unclassifiable/Attainment
Phillips County (part) excluding Fort Belknap Indian Reservation Unclassifiable/Attainment
Pondera County (part) excluding Blackfeet Indian Reservation Unclassifiable/Attainment
Powder River County Unclassifiable/Attainment
Powell County Unclassifiable/Attainment
Prairie County Unclassifiable/Attainment
Ravalli County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Roosevelt County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Rosebud County (part) excluding Northern Cheyenne Indian Reservation Unclassifiable/Attainment
Sanders County (part) excluding Flathead Indian Reservation Unclassifiable/Attainment
Sheridan County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Silver Bow County Unclassifiable/Attainment
Stillwater County Unclassifiable/Attainment
Sweet Grass County Unclassifiable/Attainment
Teton County Unclassifiable/Attainment
Toole County Unclassifiable/Attainment
Treasure County Unclassifiable/Attainment
Valley County (part) excluding Fort Peck Indian Reservation Unclassifiable/Attainment
Wheatland County Unclassifiable/Attainment
Wibaux County Unclassifiable/Attainment
Yellowstone County (part) excluding Crow Indian Reservation Unclassifiable/Attainment
Yellowstone Natl Park Unclassifiable/Attainment
Blackfeet Indian Reservation Unclassifiable/Attainment
Glacier County (part) area inside Blackfeet Reservation
Pondera County (part) area inside Blackfeet Reservation
Crow Indian Reservation Unclassifiable/Attainment
Bighorn County (part) area inside Crow Reservation
Yellowstone (part) area inside Crow Reservation
Flathead Indian Reservation Unclassifiable/Attainment
Flathead County (part) area inside Flathead Reservation
Lake County (part) area inside Flathead Reservation
Missoula County (part) area inside Flathead Reservation
Sanders County (part) area inside Flathead Reservation
Fort Belknap Indian Reservation Unclassifiable/Attainment
Blaine County (part) area inside Fort Belknap Reservation
Phillips County (part) area inside Fort Belknap Reservation
Fort Peck Indian Reservation Unclassifiable/Attainment
Daniels County (part) area inside Fort Peck Reservation
Roosevelt County (part) area inside Fort Peck Reservation
Sheridan County (part) area inside Fort Peck Reservation
Valley County (part) area inside Fort Peck Reservation
Northern Cheyenne Indian Reservation Unclassifiable/Attainment
Bighorn County (part) area inside Northern Cheyenne Reservation
Rosebud County (part) area inside Northern Cheyenne Reservation
Rocky Boy Indian Reservation Unclassifiable/Attainment
Chouteau County (part) area inside Rocky Boy Reservation
Hill County (part) area inside Rocky Boy Reservation
Montana—PM-10
Designated Area Designation Classification
Date Type Date Type
1 Denotes a single area designation for PSD baseline area purposes.
Cascade County, Great Falls area 11/15/90 Unclassifiable
Flathead County:
The area bounded by lines from Universal Transmercator (UTM) coordinate 700000mE, 5347000mN, east to 704000mE, 5347000mN, south to 704000mE, 5341000mN, west to 703000mE, 5341000mN, south to 703000mE, 5340000mN, west to 702000mE, 5340000mN, south to 702000mE, 5339000mN, east to 703000mE, 5339000mN, south to 703000mE, 5338000mN, east to 704000mE, 5338000mN, south to 704000mE, 5336000mN, west to 702000mE, 5336000mN, south to 702000mE, 5335000mN, west to 700000mE, 5335000mN, north to 700000mE, 5340000mN, west to 695000mE, 5340000mN, north to 695000mE, 5345000mN, east to 700000mE, 5345000mN, north to 700000mE, 5347000mN 11/15/90 Nonattainment 11/15/90 Moderate.
Columbia Falls and vicinity 11/15/90 Nonattainment 11/15/90 Moderate.
Township T30N, R20W—Sections 7, 8, 9, 16, 17, and 18
The City of Whitefish and surrounding vicinity bounded by lines from Universal Transmercator (UTM) coordinates 695000 mE, 5370000 mN, east to 699000 mE, 5370000 mN, south to 699000 mE, 5361000 mN, west to 695000 mN, 5361000 mN, and north to 695000 mE, 5370000 mN 11/18/93 Nonattainment 11/18/93 Moderate.
Lake County, Ronan, Polson 11/15/90 Nonattainment 11/15/90 Moderate.
Lincoln County, Libby and vicinity 11/15/90 Nonattainment 11/15/90 Moderate.
T30N, R31W—Sections 2, 3, 4, 5, 9, 10, 11, 14, 15, 23, 26, 35, and west 1/2 of Section 24, west 1/2 of Section 25, and west 1/2 of Section 36; plus T31N, R31W—Sections 26, 27, 29, 32, 33, 34, 35 and the east 1/2 of Section 30.
Lewis and Clark County, East Helena area 11/15/90 Unclassifiable
Missoula County, Missoula and vicinity including the following sections: 11/15/90 Nonattainment 11/15/90 Moderate.
T13N, R19W—2, 8, 11, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31, 32, 33, and 34; T12N, R19W—Sections 4, 5, 6, 7; T13N, R20W—Sections 23, 24, 25, 26, 35, and 36.
Rosebud County:
Lame Deer 11/15/90 Nonattainment 11/15/90 Moderate.
Colstrip area 11/15/90 Unclassifiable
Sanders County (part) 1/20/94 Nonattainment 1/20/94 Moderate.
Thompson Falls and vicinity: Including the following Sections: R29W, T21N—Sections 5, 6, 7, 8, 9, 10, 15, and 16.
Silver Bow County, Butte 11/15/90 Nonattainment 11/15/90 Moderate.
The following area of Butte-Silver Bow excluding the territorial limits of the City of Walkerville: Beginning at the Northwest corner of Section 2, T.3N., R.8W., thence Easterly to Northeast corner Section 5, T.3N., R.7W.; then Southerly to Northwest corner Section 9, T.3N., R.7W.; thence Easterly to Northeast corner Section 10, T.3N., R.7W.; thence Southerly to Southeast corner Section 22, T.2N., R.7W.; thence Westerly to Southwest corner Section 19, T.2N., R.7W.; thence Northerly to Northwest corner Section 19, T.2N., R.7W.; thence Westerly to Southwest corner Section 14, T.2N., R.8W.; thence Northerly to Southwest corner Section 35, T.3N., R.8W.; thence Westerly to Southwest corner Section 34, T.3N., R.8W.; thence Northerly to Northwest corner Section 27, T.3N., R.8W.; thence Westerly to Southwest corner Section 20, T.3N., R.8W.; thence Northerly to Northwest corner Section 17, T.3N., R.8W.; thence Easterly to Northwest corner Section 14, T.3N., R.8W.; thence Northerly to the point of beginning.
Yellowstone County, Billings area 11/15/90 Unclassifiable
Rest of State1 11/15/90 Unclassifiable
Montana—NO2 (1971 Annual Standard)
Designated area Does not meet primary standards Cannot be classified or better than national standards
Entire State X
Montana—NO2 (2010 1-Hour Standard)
Designated area Designation a
Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.
Beaverhead County Unclassifiable/Attainment.
Big Horn County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Broadwater County Unclassifiable/Attainment.
Carbon County Unclassifiable/Attainment.
Carter County Unclassifiable/Attainment.
Cascade County Unclassifiable/Attainment.
Chouteau County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Daniels County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deer Lodge County Unclassifiable/Attainment.
Fallon County Unclassifiable/Attainment.
Fergus County Unclassifiable/Attainment.
Flathead County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Glacier County Unclassifiable/Attainment.
Golden Valley County Unclassifiable/Attainment.
Granite County Unclassifiable/Attainment.
Hill County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Judith Basin County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Lewis and Clark County Unclassifiable/Attainment.
Liberty County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
McCone County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Meagher County Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment.
Missoula County Unclassifiable/Attainment.
Musselshell County Unclassifiable/Attainment.
Park County Unclassifiable/Attainment.
Petroleum County Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment.
Pondera County Unclassifiable/Attainment.
Powder River County Unclassifiable/Attainment.
Powell County Unclassifiable/Attainment.
Prairie County Unclassifiable/Attainment.
Ravalli County Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Roosevelt County Unclassifiable/Attainment.
Rosebud County Unclassifiable/Attainment.
Sanders County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Silver Bow County Unclassifiable/Attainment.
Stillwater County Unclassifiable/Attainment.
Sweet Grass County Unclassifiable/Attainment.
Teton County Unclassifiable/Attainment.
Toole County Unclassifiable/Attainment.
Treasure County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Wheatland County Unclassifiable/Attainment.
Wibaux County Unclassifiable/Attainment.
Yellowstone County Unclassifiable/Attainment.
Montana—Ozone (8-Hour Standard)
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is June 15, 2004, unless otherwise noted.
Statewide:
Beaverhead County Unclassifiable/Attainment
Big Horn County Unclassifiable/Attainment
Blaine County Unclassifiable/Attainment
Broadwater County Unclassifiable/Attainment
Carbon County Unclassifiable/Attainment
Carter County Unclassifiable/Attainment
Cascade County Unclassifiable/Attainment
Chouteau County Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Daniels County Unclassifiable/Attainment
Dawson County Unclassifiable/Attainment
Deer Lodge County Unclassifiable/Attainment
Fallon County Unclassifiable/Attainment
Fergus County Unclassifiable/Attainment
Flathead County Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Glacier County Unclassifiable/Attainment
Golden Valley County Unclassifiable/Attainment
Granite County. Unclassifiable/Attainment
Hill County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Judith Basin County Unclassifiable/Attainment
Lake County Unclassifiable/Attainment
Lewis and Clark County Unclassifiable/Attainment
Liberty County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
McCone County Unclassifiable/Attainment
Meagher County Unclassifiable/Attainment
Mineral County Unclassifiable/Attainment
Missoula County Unclassifiable/Attainment
Musselshell County Unclassifiable/Attainment
Park County Unclassifiable/Attainment
Petroleum County Unclassifiable/Attainment
Phillips County Unclassifiable/Attainment
Pondera County Unclassifiable/Attainment
Powder River County Unclassifiable/Attainment
Powell County Unclassifiable/Attainment
Prairie County Unclassifiable/Attainment
Ravalli County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Roosevelt County Unclassifiable/Attainment
Rosebud County Unclassifiable/Attainment
Sanders County Unclassifiable/Attainment
Sheridan County Unclassifiable/Attainment
Silver Bow County Unclassifiable/Attainment
Stillwater County Unclassifiable/Attainment
Sweet Grass County Unclassifiable/Attainment
Teton County Unclassifiable/Attainment
Toole County Unclassifiable/Attainment
Treasure County Unclassifiable/Attainment
Valley County Unclassifiable/Attainment
Wheatland County Unclassifiable/Attainment
Wibaux County Unclassifiable/Attainment
Yellowstone County Unclassifiable/Attainment
Yellowstone Natl Park Unclassifiable/Attainment
Montana—PM2.5 (Annual NAAQS)
Designated area Designation a
Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
Libby, MT:
Lincoln County (part) Nonattainment.
The area bounded by lines from Universal Transverse Mercador Zone 11 (North American Datum 1983) coordinates beginning at 600,000mE, 5,370,000mN east to 620,000mE, 5370,000mN south to 620,000mE, 5340,000mN west to 600,000mE, 5,340,000mN north to 600,000mE, 5,370,000mN
Rest of State:
Beaverhead County Unclassifiable/Attainment.
Big Horn County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Broadwater County Unclassifiable/Attainment.
Carbon County Unclassifiable/Attainment.
Carter County Unclassifiable/Attainment.
Cascade County Unclassifiable/Attainment.
Chouteau County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Daniels County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deer Lodge County Unclassifiable/Attainment.
Fallon County Unclassifiable/Attainment.
Fergus County Unclassifiable/Attainment.
Flathead County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Glacier County Unclassifiable/Attainment.
Golden Valley County Unclassifiable/Attainment.
Granite County Unclassifiable/Attainment.
Hill County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Judith Basin County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Lewis and Clark County Unclassifiable/Attainment.
Liberty County Unclassifiable/Attainment.
Lincoln County (remainder) Unclassifiable/Attainment.
McCone County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Meagher County Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment.
Missoula County Unclassifiable/Attainment.
Musselshell County Unclassifiable/Attainment.
Park County Unclassifiable/Attainment.
Petroleum County Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment.
Pondera County Unclassifiable/Attainment.
Powder River County Unclassifiable/Attainment.
Powell County Unclassifiable/Attainment.
Prairie County Unclassifiable/Attainment.
Ravalli County Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Roosevelt County Unclassifiable/Attainment.
Rosebud County Unclassifiable/Attainment.
Sanders County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Silver Bow County Unclassifiable/Attainment.
Stillwater County Unclassifiable/Attainment.
Sweet Grass County Unclassifiable/Attainment.
Teton County Unclassifiable/Attainment.
Toole County Unclassifiable/Attainment.
Treasure County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Wheatland County Unclassifiable/Attainment.
Wibaux County Unclassifiable/Attainment.
Yellowstone County Unclassifiable/Attainment.
Montana—PM2.5 [24-hour NAAQS]
Designated area Designation for the 1997 NAAQS a Designation for the 2006 NAAQS a
Date 1 Type Date 2 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
2 This date is 30 days after November 13, 2009, unless otherwise noted.
Statewide:
Beaverhead County Unclassifiable/Attainment Unclassifiable/Attainment.
Big Horn County Unclassifiable/Attainment Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment Unclassifiable/Attainment.
Broadwater County Unclassifiable/Attainment Unclassifiable/Attainment.
Carbon County Unclassifiable/Attainment Unclassifiable/Attainment.
Carter County Unclassifiable/Attainment Unclassifiable/Attainment.
Cascade County Unclassifiable/Attainment Unclassifiable/Attainment.
Chouteau County Unclassifiable/Attainment Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment Unclassifiable/Attainment.
Daniels County Unclassifiable/Attainment Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment Unclassifiable/Attainment.
Deer Lodge County Unclassifiable/Attainment Unclassifiable/Attainment.
Fallon County Unclassifiable/Attainment Unclassifiable/Attainment.
Fergus County Unclassifiable/Attainment Unclassifiable/Attainment.
Flathead County Unclassifiable/Attainment Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment Unclassifiable/Attainment.
Glacier County Unclassifiable/Attainment Unclassifiable/Attainment.
Golden Valley County Unclassifiable/Attainment Unclassifiable/Attainment.
Granite County Unclassifiable/Attainment Unclassifiable/Attainment.
Hill County Unclassifiable/Attainment Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment Unclassifiable/Attainment.
Judith Basin County Unclassifiable/Attainment Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment Unclassifiable/Attainment.
Lewis and Clark County Unclassifiable/Attainment Unclassifiable/Attainment.
Liberty County Unclassifiable/Attainment Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment Unclassifiable/Attainment.
McCone County Unclassifiable/Attainment Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment Unclassifiable/Attainment.
Meagher County Unclassifiable/Attainment Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment Unclassifiable/Attainment.
Missoula County Unclassifiable/Attainment Unclassifiable/Attainment.
Musselshell County Unclassifiable/Attainment Unclassifiable/Attainment.
Park County Unclassifiable/Attainment Unclassifiable/Attainment.
Petroleum County Unclassifiable/Attainment Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment Unclassifiable/Attainment.
Pondera County Unclassifiable/Attainment Unclassifiable/Attainment.
Powder River County Unclassifiable/Attainment Unclassifiable/Attainment.
Powell County Unclassifiable/Attainment Unclassifiable/Attainment.
Prairie County Unclassifiable/Attainment Unclassifiable/Attainment.
Ravalli County Unclassifiable/Attainment Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment Unclassifiable/Attainment.
Roosevelt County Unclassifiable/Attainment Unclassifiable/Attainment.
Rosebud County Unclassifiable/Attainment Unclassifiable/Attainment.
Sanders County Unclassifiable/Attainment Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment Unclassifiable/Attainment.
Silver Bow County Unclassifiable/Attainment Unclassifiable/Attainment.
Stillwater County Unclassifiable/Attainment Unclassifiable/Attainment.
Sweet Grass County Unclassifiable/Attainment Unclassifiable/Attainment.
Teton County Unclassifiable/Attainment Unclassifiable/Attainment.
Toole County Unclassifiable/Attainment Unclassifiable/Attainment.
Treasure County Unclassifiable/Attainment Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment Unclassifiable/Attainment.
Wheatland County Unclassifiable/Attainment Unclassifiable/Attainment.
Wibaux County Unclassifiable/Attainment Unclassifiable/Attainment.
Yellowstone County Unclassifiable/Attainment Unclassifiable/Attainment.
Montana—2008 Lead NAAQS
Designated area Designation for the 2008 NAAQS a
Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 December 31, 2011 unless otherwise noted.
Whole State Unclassifiable/Attainment.
[43 FR 8964, Mar. 3, 1978]
Editorial Note:
For Federal Register citations affecting § 81.327 see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
§ 81.327, Nt.
Effective Date Note:
At 77 FR 30132, May 21, 2012, § 81.327 was amended by revising the table heading for “Montana—Ozone (8-Hour Standard)” to read “Montana—1997 8-Hour Ozone NAAQS (Primary and Secondary)”; by adding a new table entitled “Montana—2008 8-Hour Ozone NAAQS (Primary and Secondary)” following the newly designated table “Montana—1997 8-Hour Ozone NAAQS (Primary and Secondary)”, effective July 20, 2012. For the convenience of the user, the added text is set forth as follows:
§ 81.327 Montana.
Montana—2008 8-Hour Ozone NAAQS(Primary and secondary)
Designated area Designation Classification
Date 1 Type Date 1 Type
1 This date is July 20, 2012, unless otherwise noted.
Statewide and Any Areas of Indian Country Unclassifiable/Attainment

Title 40 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-08-05; vol. 79 # 150 - Tuesday, August 5, 2014
    1. 79 FR 45350 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Redesignation Requests, Associated Maintenance Plans, and Motor Vehicle Emissions Budgets for the Delaware Portion of the Philadelphia-Wilmington, PA-NJ-DE Nonattainment Area for the 1997 Annual and 2006 24-Hour Fine Particulate Matter Standards, and the 2007 Comprehensive Emissions Inventory for the 2006 24-Hour Fine Particulate Matter Standard
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on September 4, 2014.
      40 CFR Parts 52 and 81

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE

§ 7401 - Congressional findings and declaration of purpose

§ 7402 - Cooperative activities

§ 7403 - Research, investigation, training, and other activities

§ 7404 - Research relating to fuels and vehicles

§ 7405 - Grants for support of air pollution planning and control programs

§ 7406 - Interstate air quality agencies; program cost limitations

§ 7407 - Air quality control regions

§ 7408 - Air quality criteria and control techniques

§ 7409 - National primary and secondary ambient air quality standards

§ 7410 - State implementation plans for national primary and secondary ambient air quality standards

§ 7411 - Standards of performance for new stationary sources

§ 7412 - Hazardous air pollutants

§ 7413 - Federal enforcement

§ 7414 - Recordkeeping, inspections, monitoring, and entry

§ 7415 - International air pollution

§ 7416 - Retention of State authority

§ 7417 - Advisory committees

§ 7418 - Control of pollution from Federal facilities

§ 7419 - Primary nonferrous smelter orders

§ 7420 - Noncompliance penalty

§ 7421 - Consultation

§ 7422 - Listing of certain unregulated pollutants

§ 7423 - Stack heights

§ 7424 - Assurance of adequacy of State plans

§ 7425 - Measures to prevent economic disruption or unemployment

§ 7426 - Interstate pollution abatement

§ 7427 - Public notification

§ 7428 - State boards

§ 7429 - Solid waste combustion

§ 7430 - Emission factors

§ 7431 - Land use authority

§ 7450 to 7459 - Repealed.

§ 7470 - Congressional declaration of purpose

§ 7471 - Plan requirements

42 U.S. Code § 7450 to 7459 - Repealed.

§ 7472 - Initial classifications

§ 7473 - Increments and ceilings

§ 7474 - Area redesignation

§ 7475 - Preconstruction requirements

§ 7476 - Other pollutants

§ 7477 - Enforcement

§ 7478 - Period before plan approval

§ 7479 - Definitions

§ 7491 - Visibility protection for Federal class I areas

§ 7492 - Visibility

§ 7501 - Definitions

§ 7502 - Nonattainment plan provisions in general

§ 7503 - Permit requirements

§ 7504 - Planning procedures

§ 7505 - Environmental Protection Agency grants

§ 7505a - Maintenance plans

§ 7506 - Limitations on certain Federal assistance

§ 7506a - Interstate transport commissions

§ 7507 - New motor vehicle emission standards in nonattainment areas

§ 7508 - Guidance documents

§ 7509 - Sanctions and consequences of failure to attain

§ 7509a - International border areas

§ 7511 - Classifications and attainment dates

§ 7511a - Plan submissions and requirements

§ 7511b - Federal ozone measures

§ 7511c - Control of interstate ozone air pollution

§ 7511d - Enforcement for Severe and Extreme ozone nonattainment areas for failure to attain

§ 7511e - Transitional areas

§ 7511f - NO

§ 7512 - Classification and attainment dates

§ 7512a - Plan submissions and requirements

§ 7513 - Classifications and attainment dates

§ 7513a - Plan provisions and schedules for plan submissions

§ 7513b - Issuance of RACM and BACM guidance

§ 7514 - Plan submission deadlines

§ 7514a - Attainment dates

§ 7515 - General savings clause

§ 7521 - Emission standards for new motor vehicles or new motor vehicle engines

§ 7522 - Prohibited acts

§ 7523 - Actions to restrain violations

§ 7524 - Civil penalties

§ 7525 - Motor vehicle and motor vehicle engine compliance testing and certification

§ 7541 - Compliance by vehicles and engines in actual use

§ 7542 - Information collection

§ 7543 - State standards

§ 7544 - State grants

§ 7545 - Regulation of fuels

§ 7546 - Renewable fuel

§ 7547 - Nonroad engines and vehicles

§ 7548 - Study of particulate emissions from motor vehicles

§ 7549 - High altitude performance adjustments

§ 7550 - Definitions

§ 7551 - Omitted

§ 7552 - Motor vehicle compliance program fees

§ 7553 - Prohibition on production of engines requiring leaded gasoline

§ 7554 - Urban bus standards

§ 7571 - Establishment of standards

§ 7572 - Enforcement of standards

§ 7573 - State standards and controls

§ 7574 - Definitions

§ 7581 - Definitions

§ 7582 - Requirements applicable to clean-fuel vehicles

§ 7583 - Standards for light-duty clean-fuel vehicles

§ 7584 - Administration and enforcement as per California standards

§ 7585 - Standards for heavy-duty clean-fuel vehicles (GVWR above 8,500 up to 26,000 lbs.)

§ 7586 - Centrally fueled fleets

§ 7587 - Vehicle conversions

§ 7588 - Federal agency fleets

§ 7589 - California pilot test program

§ 7590 - General provisions

§ 7601 - Administration

§ 7602 - Definitions

§ 7603 - Emergency powers

§ 7604 - Citizen suits

§ 7605 - Representation in litigation

§ 7606 - Federal procurement

§ 7607 - Administrative proceedings and judicial review

§ 7608 - Mandatory licensing

§ 7609 - Policy review

§ 7610 - Other authority

§ 7611 - Records and audit

§ 7612 - Economic impact analyses

§ 7613 - Repealed.

§ 7614 - Labor standards

§ 7615 - Separability

§ 7616 - Sewage treatment grants

§ 7617 - Economic impact assessment

§ 7618 - Repealed.

§ 7619 - Air quality monitoring

§ 7620 - Standardized air quality modeling

§ 7621 - Employment effects

§ 7622 - Employee protection

§ 7623 - Repealed.

§ 7624 - Cost of vapor recovery equipment

§ 7625 - Vapor recovery for small business marketers of petroleum products

42 U.S. Code § 7450 to 7459 - Repealed.

§ 7625a - Statutory construction

§ 7626 - Authorization of appropriations

§ 7627 - Air pollution from Outer Continental Shelf activities

§ 7628 - Demonstration grant program for local governments

§ 7641 - Noise abatement

§ 7642 - Authorization of appropriations

§ 7651 - Findings and purposes

§ 7651a - Definitions

§ 7651b - Sulfur dioxide allowance program for existing and new units

§ 7651c - Phase I sulfur dioxide requirements

§ 7651d - Phase II sulfur dioxide requirements

§ 7651e - Allowances for States with emissions rates at or below 0.80 lbs/mmBtu

§ 7651f - Nitrogen oxides emission reduction program

§ 7651g - Permits and compliance plans

§ 7651h - Repowered sources

§ 7651i - Election for additional sources

§ 7651j - Excess emissions penalty

§ 7651k - Monitoring, reporting, and recordkeeping requirements

42 U.S. Code § -

§ 7651m - Enforcement

§ 7651n - Clean coal technology regulatory incentives

42 U.S. Code § -

§ 7661 - Definitions

§ 7661a - Permit programs

§ 7661b - Permit applications

§ 7661c - Permit requirements and conditions

§ 7661d - Notification to Administrator and contiguous States

§ 7661e - Other authorities

§ 7661f - Small business stationary source technical and environmental compliance assistance program

§ 7671 - Definitions

§ 7671a - Listing of class I and class II substances

§ 7671b - Monitoring and reporting requirements

§ 7671c - Phase-out of production and consumption of class I substances

§ 7671d - Phase-out of production and consumption of class II substances

§ 7671e - Accelerated schedule

§ 7671f - Exchange authority

§ 7671g - National recycling and emission reduction program

§ 7671h - Servicing of motor vehicle air conditioners

§ 7671i - Nonessential products containing chlorofluorocarbons

§ 7671j - Labeling

§ 7671k - Safe alternatives policy

42 U.S. Code § -

§ 7671m - Relationship to other laws

§ 7671n - Authority of Administrator

42 U.S. Code § -

§ 7671p - International cooperation

§ 7671q - Miscellaneous provisions

Title 40 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 81 after this date.

  • 2014-08-06; vol. 79 # 151 - Wednesday, August 6, 2014
    1. 79 FR 45735 - Approval and Promulgation of Air Quality Implementation Plans; District of Columbia, Maryland, and Virginia; Approval of the Redesignation Requests and Maintenance Plan of the Washington, DC-MD-VA Nonattainment Area for the 1997 Annual Fine Particulate Matter Standard
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Proposed rule.
      Written comments must be received on or before September 5, 2014.
      40 CFR Parts 52 and 81