40 CFR 81.306 - Colorado.

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§ 81.306 Colorado.
Colorado—SO2
Designated Area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Entire State X
Colorado—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
1 This date is November 15, 1990, unless otherwise noted.
Colorado Springs Area: October 25, 1999 Attainment
Urban Transportation Planing Study Area as defined in 1989.
Beginning near the Town of Palmer Lake, at the Northwest corner of the Study Area at a point on the El Paso/Douglas County line, also on the Pike National Forest boundary, then:
east along the County line to Elbert Road; south on Elbert Road to Judge Orr Road; east on Judge Orr Road to Ellicott Highway; south on Ellicott Highway to Squirrel Creek Road; west on Squirrel Creek Road to Williams Creek; south along Williams Creek to the confluence of Williams and Fountain Creeks; south along Fountain Creek to the El Paso/Douglas County line; west on the County line to I-25; north on I-25 to Exit 132; west on McGrath to 35th; south on 35th to Specker; northwest on Specker to Titus Blvd.; west on Titus Blvd. to SH-115;
south on SH-115 to Rock Creek;
northwest along Rock Creek to the Pike National Forest boundary; north along the Forest boundary to Old Stage Road; southwest on Old Stage Road to Gold Camp Road; north on Gold Camp Road to High Drive; north on High Drive to Lower Gold Camp Road; north on Lower Gold Camp Road to the Pike National Forest boundary; west along the Forest boundary, following the boundary north, then east to US-24; northwest on US-24 to the Pikes Peak Toll Road; west on the Toll Road to the El Paso/Teller County line;
north along the County line to Crystola Creek; west on Crystola Creek to County Road 282, north on Road 282 to US-24; northeast on US-24 to Trout Creek Road; northwest on Trout Creek Road to Trout Creek; north along Trout Creek to the confluence of Trout and Mule Creeks; north along Mule Creek to Long Gulch; east along Long Gulch to White Gulch; east along White Gulch to Rampart Range Road; southeast on Rampart Range Road to the Pike National Forest Boundary; north along the Forest boundary to the El Paso/Douglas County line, to the point of origin.
El Paso County (part)
Teller County (part)
Denver-Boulder Area:
The boundaries for the Denver nonattainment area for carbon monixide (CO) are described as follows: Start at Colorado Highway 52 where it intersects the eastern boundary of Boulder County; Follow Highway 52 west until it intersects Colorado Highway 119; Follow northern boundary of Boulder city limits west to the 6,000-ft. elevation line; Follow the 6000-ft. elevation line south through Boulder and Jefferson Counties to US 6 in Jefferson County; Follow US 6 west to the Jefferson County-Clear Creek County line; Follow the Jefferson County western boundary south for approximately 16.25 miles; Follow a line east for approximately 3.75 mile to South Turkey Creek; Follow South Turkey Creek northeast for approximately 3.5 miles; Follow a line southeast for approximately 2.0 miles to the junction of South Deer Creek Road and South Deer Creek Canyon Road; Follow South Deer Creek Canyon Road northeast for approximately 3.75 miles; Follow a line southeast for approximately five miles to the northern-most boundary of Pike National Forest where it intersects the Jefferson County-Douglas County line; follow the Pike National forest boundary southeast through Douglas County to the Douglas County-El Paso County line; Follow the southern boundary on Douglas County east to the Elbert County line; Follow the eastern boundary of Douglas County north to the Arapahoe County line; Follow the southern boundary of Araphoe County east to Kiowa Creek; Follow Kiowa Creek northeast through Arapahoe and Adams Counties to the Adams-Weld County line; Follow the northern boundary of Adams County west to the Boulder County line; Follow the eastern boundary of Boulder County north to Highway 52 January 14, 2002 Attainment
Adams County (part)
Arapahoe County (part)
Boulder County (part)
Denver County
Douglas County (part)
Jefferson County (part)
Fort Collins Area:
Larimer County (part) Sept. 22, 2003 Attainment
Fort Collins Urban Growth Area Boundary as adopted by the City of Fort Collins and the Larimer County Commissioners and in effect as of July 30, 1991.
Greeley Area: Attainment
Weld County (part) May 10, 1999
Urban boundaries as defined in the North Front Range Regional Transportation Plan, May, 1990.
Longmont Area Nov. 23, 1999 Attainment
Hwy 52 west from the Boulder/Weld County line to 95th Street/Hoover Road, then north on 95th Street/Hoover Road to the intersection of Plateau Road and SH 119, then west on Plateau Road to the intersection of Hygiene Road, then due north to the Boulder/Larimer County line, then due east to the intersection of the Boulder/Larimer/Weld County lines, then south along the Boulder/Weld County line to Hwy 52, plus the portion of the City of Longmont east of the Boulder/Weld County line in Weld County.
Boulder County (part):
Weld County (part):
State AQCR 1 Unclassifiable/Attainment
Logan County
Morgan County
Phillips County
Sedgwick County
Washington County
Yuma County
State AQCR 2 (Remainder of)
Larimer County (part) Unclassifiable/Attainment
Area outside Fort Collins Urban Growth Area Boundary
Weld County (part)
Remainder of county Unclassifiable/Attainment
State AQCR 3 (Remainder of) Unclassifiable/Attainment
Adams County (part)
Remainder of County
Arapahoe County (part)
Remainder of County
Boulder County (part)
Remainder of County
Clear Creek County
Douglas County (part)
Remainder of County
Gilpin County
Jefferson County (part)
Remainder of County
State AQCR 4 (Remainder of) Unclassifiable/Attainment
El Paso County (part)
Area other than Urban Transportation Planning Study Area as defined in 1989
Park County
Teller County (part)
Remainder of County
State AQCR's 5-13 Unclassifiable/Attainment
Alamosa County
Archuleta County
Baca County
Bent County
Chaffee County
Cheyenne County
Conejos County
Costilla County
Crowley County
Custer County
Delta County
Dolores County
Eagle County
Elbert County
Fremont County
Garfield County
Grand County
Gunnison County
Hinsdale County
Huerfano County
Jackson County
Kiowa County
Kit Carson County
La Plata County
Lake County
Las Animas County
Lincoln County
Mesa County
Mineral County
Moffat County
Montezuma County
Montrose County
Otero County
Ouray County
Pitkin County
Prowers County
Pueblo County
Rio Blanco County
Rio Grande County
Routt County
Saguache County
San Juan County
San Miguel County
Summit County
Colorado—Ozone (1-Hour Standard)4
Designated area Designation Classification
Date 1 Type Date 1 Type
1 This date is October 18, 2000, unless otherwise noted.
2 An area designated as an ozone nonattainment area as of the date of enactment of the CAAA of the 1990 that did not violate the ozone NAAQS during the period of 1987-1989.
3 This date is January 16, 2001.
4 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Colorado except the Denver (Denver-Boulder-Greeley-Ft. Collins-Love) area where it is revoked effective November 20, 2008.
Denver-Boulder Area:
Adams County (part)
West of Kiowa Creek 10/11/01 Attainment
Arapahoe County (part)
West of Kiowa Creek Attainment
Boulder County (part) excluding Rocky Mountain National Park Attainment
Denver County Attainment
Douglas County Attainment
Jefferson County Attainment
State AQCR 01 Unclassifiable/Attainment
Logan County
Morgan County
Phillips County
Sedgwick County
Washington County
Yuma County
State AQCR 02 Unclassifiable/Attainment
Larimer County
Weld County
State AQCR 03 (Remainder of) Unclassifiable/Attainment
Adams County (part) East of Kiowa Creek
Arapahoe County (part) East of Kiowa Creek
Boulder County (part) Rocky Mtn. National Park Only
Clear Creek County
Gilpin County
State AQCR 11 Unclassifiable/Attainment
Garfield County
Mesa County
Moffat County
Rio Blanco County
Rest of State Unclassifiable/Attainment
Alamosa County
Archuleta County
Baca County
Bent County
Chaffee County
Cheyenne County
Conejos County
Costilla County
Crowley County
Custer County
Delta County
Dolores County
Eagle County
El Paso County
Elbert County
Fremont County
Grand County
Gunnison County
Hinsdale County
Huerfano County
Jackson County
Kiowa County
Kit Carson County
La Plata County
Lake County
Las Animas County
Lincoln County
Mineral County
Montezuma County
Montrose County
Otero County
Ouray County
Park County
Pitkin County
Prowers County
Pueblo County
Rio Grande County
Routt County
Saguache County
San Juan County
San Miguel County
Summit County
Teller County
Colorado—PM-10
Designated area Designation Classification
Date Type Date Type
Archuleta County
Pagosa Springs Area 8/14/01 Attainment
Township 35N-Range 2W: Sections 13, 14, 15; Section 23 NE, N 1/2 SE; Section 24 all except SWSW; Section 25 N 1/2NE, NENW.
Township 35N-Range 1W: Section 18 W 1/2
Adams, Denver, and Boulder Counties
Denver Metropolitan area 10/16/02 Attainment
All of Denver, Jefferson, and Douglas Counties, Boulder County (excluding the Rocky Mountain National Park) and the Colorado automobile inspection and readjustment program portions of Adams and Arapahoe Counties
San Miguel County
Telluride 8/14/01 Attainment
The Telluride attainment/maintenance area begins at the intersection of Colorado State Highway 145 and the Telluride service area boundary, as it existed in 1991. The western edge of the nonattainment area until it meets Remine Creek is defined as follows: A tract of land located in a portion of the west one-half of Section 28 and the east one-half of Section 29, Township 43 North, Range 9 west, of New Mexico Principal Meridian, County of San Miguel, State of Colorado, described as follows: Beginning at the southwest corner of the said Section 28; Thence N 89 deg.36′00″ W. 292.70 Feet; Thence S 04 deg.05′12″ W. 538.63 Feet; Thence N 03 deg.29′42″ W. 780.19 Feet; Thence N 22 deg.15′00″ E. 3344.16 Feet; Thence S 51 deg.51′49″ E. 570.44 Feet; Thence S 03 deg.15′36″ E. 1106.22 Feet; Thence S 45 deg.24′42″ E. 546.96 Feet; Thence S 28 deg.41′12″ W. 549.62 Feet; Thence S 29 deg.40′09″ E. 169.68 Feet; Thence S 44 deg.30′03″ W. 649.51 Feet; Thence S 85 deg.54′00″ E. 660.00 Feet; Thence S 04 deg.06′00″ W. 660.00 Feet; Thence N 89 deg.56′00″ E. 1318.68 Feet; to the true point of beginning containing 11249 acres as described above. Then, at Remine Creek, the attainment/maintenance boundary follows the service area boundary for 9.65 miles to the 9,200 foot contour line. The boundary then intersects Bear Creek. Here the attainment/maintenance boundary diverges from the service area boundary (9,200 foot contour line). The attainment/maintenance boundary continues in a west, southwest direction for 0.92 miles from the intersection of the 9,200 foot contour line and Bear Creek to the top of ski lift number 9 in the Telluride Ski Area at an elevation of about 11,900 feet. The boundary then shifts and runs in a north-westerly direction for 0.83 miles from the top of lift 9 to the top of lift 7, which is located at an elevation of 10,490 feet. From the top of lift 7, the attainment/maintenance boundary continues in a north-westerly direction for 0.5 miles to the intersection of lift 3 with the 10,000 foot control line. The attainment/maintenance boundary follows the 10,000 foot contour line in a south, south-west direction for 3.2 miles, until it intersects Skunk Creek. Here the boundary diverges from the 10,000 foot contour line and follows Skunk Creek in a northerly direction for 2.25 miles. At the intersection of Skunk Creek and Colorado State Highway 145, the attainment/maintenance boundary leaves the creek and follows Highway 145 in a northerly direction until it meets the service area boundary as it existed prior to changes adopted in 1991.
Prowers County
Lamar 12/27/05 Attainment
Pitkin County:
Aspen/Pitkin County Area—The area encompassed by the following Parcel ID numbers, as defined by the Pitkin County Planning Department: 2337-29, 2737-28, 2737-21, 2737-20, 2737-19, 2737-18, 2737-17, 2737-08, 2737-07, 2737-06, 2735-22, 2735-15, 2735-14, 2735-13, 2735-12, 2735-11, 2735-10, 2735-03, 2735-02, 2735-01, 2641-31, 2643-36, 2643-35, 2643-34, 2643-27, 2643-26 7/14/03 Attainment.
Fremont County
Canon City Area 7/31/00 Attainment
Township 18S—Range 70W: All of sections 21, 22, 27, 28, 33, and 34; the E1/2, NENW, NESW, SENW, SESW quarters of sections 20, 29, 32; and the W1/2 of sections 23, 26, and 35; Township 19S—Range 70W: All of sections 3, 4, 9, 10; E1/2, NENW, NESW, SENW, SESW quarters of sections 5 and 8; W1/2 of sections 2 and 11.
Routt County (part):
Steamboat Springs 11/24/04 Attainment.
On the East—The Routt National Forest.
On the South—The southern border of sections 19, 10, 21, T4N, R84W of the 6th P.M. and the southern border of sections 23, 24, T4N, R85W of the 6th P.M.
On the West—Beginning at the southwestern corner of section 23, T4N, R85W of the 6th P.M. North along the western border of sections 23, 14, 11, T4N, R85W. Thence, along the ridge which bisects sections 35, 36, 25, 24, 13, 14, 11, 12, 1, T5N, R85W, and sections 36, 25, 24, T6N, R85W. Thence heading northwest along the ridge which bisects sections 23, 15, 10, 9, 4, T6N, R85W of 6th P.M. Thence, heading northeast along the ridge which bisects sections 33, 34, 35, 36, 25, T7N, R85W and sections 30 and 10 of T7N, R84W. Thence, north along the N 1/2 of the western edge of section 19, to the NW corner of section 18, T7N, R84W.
On the North—The northern boundary of sections 16, 17, 18, T7N, R84W of 6th P.M.
AQCR 1 11/15/90 Unclassifiable
AQCR 2 11/15/90 Unclassifiable
AQCR 3 (excluding the Denver Metropolitan PM-10 nonattainment area) 11/15/90 Unclassifiable
AQCR 4 11/15/90 Unclassifiable
AQCR 5 11/15/90 Unclassifiable
AQCR 6 (excluding the Lamar PM-10 nonattainment area) 11/15/90 Unclassifiable
AQCR 7 11/15/90 Unclassifiable
AQCR 8 11/15/90 Unclassifiable
AQCR 9 (excluding the Pagosa Springs PM-10 nonattainment area) 11/15/90 Unclassifiable
AQCR 10 (excluding the Telluride PM-10 nonattainment area) 11/15/90 Unclassifiable
AQCR 11 11/15/90 Unclassifiable
AQCR 12 (excluding the Aspen/Pitkin County and Steamboat Springs Area Airshed PM-10 nonattainment areas) 11/15/90 Unclassifiable
AQCR 13 (excluding the Canon City PM-10 nonattainment area) 1/15/90 Unclassifiable
Colorado—NO2 (1971 Annual Standard)
Designated area Better than national standards
Entire State X
Colorado—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.
State AQCR 01:
Logan County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment.
Sedgwick County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Yuma County Unclassifiable/Attainment.
State AQCR 02:
Larimer County Unclassifiable/Attainment.
Weld County Unclassifiable/Attainment.
State AQCR 03:
Adams County Unclassifiable/Attainment.
Arapahoe County Unclassifiable/Attainment.
Boulder County Unclassifiable/Attainment.
Broomfield County Unclassifiable/Attainment.
Clear Creek County Unclassifiable/Attainment.
Denver County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Gilpin County Unclassifiable/Attainment.
State AQCR 04:
El Paso County Unclassifiable/Attainment.
Park County Unclassifiable/Attainment.
Teller County Unclassifiable/Attainment.
State AQCR 05:
Cheyenne County Unclassifiable/Attainment.
Elbert County Unclassifiable/Attainment.
Kit Carson County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
State AQCR 06:
Baca County Unclassifiable/Attainment.
Bent County Unclassifiable/Attainment.
Crowley County Unclassifiable/Attainment.
Kiowa County Unclassifiable/Attainment.
Otero County Unclassifiable/Attainment.
Prowers County Unclassifiable/Attainment.
State AQCR 07:
Huerfano County Unclassifiable/Attainment.
Las Animas County Unclassifiable/Attainment.
Pueblo County Unclassifiable/Attainment.
State AQCR 08:
Alamosa County Unclassifiable/Attainment.
Conejos County Unclassifiable/Attainment.
Costilla County Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment.
Rio Grande County Unclassifiable/Attainment.
Saguache County Unclassifiable/Attainment.
State AQCR 09:
Archuleta County Unclassifiable/Attainment.
Dolores County Unclassifiable/Attainment.
La Plata County Unclassifiable/Attainment.
Montezuma County Unclassifiable/Attainment.
San Juan County Unclassifiable/Attainment.
State AQCR 10:
Delta County Unclassifiable/Attainment.
Gunnison County Unclassifiable/Attainment.
Hinsdale County Unclassifiable/Attainment.
Montrose County Unclassifiable/Attainment.
Ouray County Unclassifiable/Attainment.
San Miguel County Unclassifiable/Attainment.
State AQCR 11:
Garfield County Unclassifiable/Attainment.
Mesa County Unclassifiable/Attainment.
Moffat County Unclassifiable/Attainment.
Rio Blanco County Unclassifiable/Attainment.
State AQCR 12:
Eagle County Unclassifiable/Attainment.
Grand County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Pitkin County Unclassifiable/Attainment.
Routt County Unclassifiable/Attainment.
Summit County Unclassifiable/Attainment.
State AQCR 13:
Chaffee County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Fremont County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Colorado—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.
2 Effective November 20, 2007.
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO:
Adams County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Arapahoe County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Boulder County (includes part of Rocky Mtn. Nat. Park) 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Broomfield County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Denver County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Douglas County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Jefferson County 2 Nonattainment 6/13/12 Subpart 2/Marginal.
Larimer County (part) 2 Nonattainment 6/13/12 Subpart 2/Marginal.
(includes part of Rocky Mtn. Nat. Park). That portion of the county that lies south of a line described as follows: Beginning at a point on Larimer County's eastern boundary and Weld County's western boundary intersected by 40 degrees, 42 minutes, and 47.1 seconds north latitude, proceed west to a point defined by the intersection of 40 degrees, 42 minutes, 47.1 seconds north latitude and 105 degrees, 29 minutes, and 40.0 seconds west longitude, thence proceed south on 105 degrees, 29 minutes, 40.0 seconds west longitude to the intersection with 40 degrees, 33 minutes and 17.4 seconds north latitude, thence proceed west on 40 degrees, 33 minutes, 17.4 seconds north latitude until this line intersects Larimer County's western boundary and Grand County's eastern boundary.
Weld County (part) 2 Nonattainment 6/13/12 Subpart 2/Marginal.
That portion of the county that lies south of a line described as follows: Beginning at a point on Weld County's eastern boundary and Logan County's western boundary intersected by 40 degrees, 42 minutes, 47.1 seconds north latitude, proceed west on 40 degrees, 42 minutes, 47.1 seconds north latitude until this line intersects Weld County's western boundary and Larimer County's eastern boundary.
State AQCR 01 Unclassifiable/Attainment
Logan County
Phillips County
Sedgwick County
Washington County
Yuma County
State AQCR 03 (remainder of) Unclassifiable/Attainment
Clear Creek County
Gilpin County
State AQCR 11 Unclassifiable/Attainment
Garfield County
Mesa County
Moffat County
Rio Blanco County
Rest of State Unclassifiable/Attainment
Alamosa County
Archuleta County
Baca County
Bent County
Chaffee County
Cheyenne County
Conejos County
Costilla County
Crowley County
Custer County
Delta County
Dolores County
Eagle County
El Paso County
Elbert County
Fremont County
Grand County (includes portion of W. Rocky Mtn. Nat. Park)
Gunnison County
Hinsdale County
Huerfano County
Jackson County
Kiowa County
Kit Carson County
La Plata County
Lake County
Larimer County (part) remainder
Las Animas County
Lincoln County
Mineral County
Montezuma County
Montrose County
Morgan County
Otero County
Ouray County
Park County
Pitkin County
Prowers County
Pueblo County
Rio Grande County
Routt County
Saguache County
San Juan County
San Miguel County
Summit County
Teller County
Weld County (part) remainder
Colorado—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.
Denver-Boulder Area:
Adams County (part) Unclassifiable/Attainment.
West of Kiowa Creek
Arapahoe County (part) Unclassifiable/Attainment.
West of Kiowa Creek
Boulder County (part) Unclassifiable/Attainment.
Excluding Rocky Mountain National Park
Broomfield County Unclassifiable/Attainment.
Denver County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
State AQCR 01:
Logan County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment.
Sedgwick County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Yuma County Unclassifiable/Attainment.
State AQCR 02:
Larimer County Unclassifiable/Attainment.
Weld County Unclassifiable/Attainment.
State AQCR 03 (remainder of):
Adams County (remainder) Unclassifiable/Attainment.
Arapahoe County (remainder) Unclassifiable/Attainment.
Boulder County (remainder) Unclassifiable/Attainment.
Clear Creek County Unclassifiable/Attainment.
Gilpin County Unclassifiable/Attainment.
State AQCR 04:
El Paso County Unclassifiable/Attainment.
Park County Unclassifiable/Attainment.
Teller County Unclassifiable/Attainment.
State AQCR 05:
Cheyenne County Unclassifiable/Attainment.
Elbert County Unclassifiable/Attainment.
Kit Carson County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
State AQCR 06:
Baca County Unclassifiable/Attainment.
Bent County Unclassifiable/Attainment.
Crowley County Unclassifiable/Attainment.
Kiowa County Unclassifiable/Attainment.
Otero County Unclassifiable/Attainment.
Prowers County Unclassifiable/Attainment.
State AQCR 07:
Huerfano County Unclassifiable/Attainment.
Las Animas County Unclassifiable/Attainment.
Pueblo County Unclassifiable/Attainment.
State AQCR 08:
Alamosa County Unclassifiable/Attainment.
Conejos County Unclassifiable/Attainment.
Costilla County Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment.
Rio Grande County Unclassifiable/Attainment.
Saguache County Unclassifiable/Attainment.
State AQCR 09:
Archuleta County Unclassifiable/Attainment.
Dolores County Unclassifiable/Attainment.
La Plata County Unclassifiable/Attainment.
Montezuma County Unclassifiable/Attainment.
San Juan County Unclassifiable/Attainment.
State AQCR 10:
Delta County Unclassifiable/Attainment.
Gunnison County Unclassifiable/Attainment.
Hinsdale County Unclassifiable/Attainment.
Montrose County Unclassifiable/Attainment.
Ouray County Unclassifiable/Attainment.
San Miguel County Unclassifiable/Attainment.
State AQCR 11:
Garfield County Unclassifiable/Attainment.
Mesa County Unclassifiable/Attainment.
Moffat County Unclassifiable/Attainment.
Rio Blanco County Unclassifiable/Attainment.
State AQCR 12:
Eagle County Unclassifiable/Attainment.
Grand County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Pitkin County Unclassifiable/Attainment.
Routt County Unclassifiable/Attainment.
Summit County Unclassifiable/Attainment.
State AQCR 13:
Chaffee County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Fremont County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Colorado—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.
Denver-Boulder Area:
Adams County (part) West of Kiowa Creek Unclassifiable/Attainment Unclassifiable/Attainment.
Arapahoe County (part) West of Kiowa Creek Unclassifiable/Attainment Unclassifiable/Attainment.
Boulder County (part) Excluding Rocky Mountain National Park Unclassifiable/Attainment Unclassifiable/Attainment.
Broomfield County Unclassifiable/Attainment Unclassifiable/Attainment.
Denver County Unclassifiable/Attainment Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 01:
Logan County Unclassifiable/Attainment Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment Unclassifiable/Attainment.
Phillips County Unclassifiable/Attainment Unclassifiable/Attainment.
Sedgwick County Unclassifiable/Attainment Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment Unclassifiable/Attainment.
Yuma County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 02:
Larimer County Unclassifiable/Attainment Unclassifiable/Attainment.
Weld County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 03 (remainder of):
Adams County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Arapahoe County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Boulder County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Clear Creek County Unclassifiable/Attainment Unclassifiable/Attainment.
Gilpin County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 04:
El Paso County Unclassifiable/Attainment Unclassifiable/Attainment.
Park County Unclassifiable/Attainment Unclassifiable/Attainment.
Teller County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 05:
Cheyenne County Unclassifiable/Attainment Unclassifiable/Attainment.
Elbert County Unclassifiable/Attainment Unclassifiable/Attainment.
Kit Carson County Unclassifiable/Attainment Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 06:
Baca County Unclassifiable/Attainment Unclassifiable/Attainment.
Bent County Unclassifiable/Attainment Unclassifiable/Attainment.
Crowley County Unclassifiable/Attainment Unclassifiable/Attainment.
Kiowa County Unclassifiable/Attainment Unclassifiable/Attainment.
Otero County Unclassifiable/Attainment Unclassifiable/Attainment.
Prowers County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 07:
Huerfano County Unclassifiable/Attainment Unclassifiable/Attainment.
Las Animas County Unclassifiable/Attainment Unclassifiable/Attainment.
Pueblo County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 08:
Alamosa County Unclassifiable/Attainment Unclassifiable/Attainment.
Conejos County Unclassifiable/Attainment Unclassifiable/Attainment.
Costilla County Unclassifiable/Attainment Unclassifiable/Attainment.
Mineral County Unclassifiable/Attainment Unclassifiable/Attainment.
Rio Grande County Unclassifiable/Attainment Unclassifiable/Attainment.
Saguache County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 09:
Archuleta County Unclassifiable/Attainment Unclassifiable/Attainment.
Dolores County Unclassifiable/Attainment Unclassifiable/Attainment.
La Plata County Unclassifiable/Attainment Unclassifiable/Attainment.
Montezuma County Unclassifiable/Attainment Unclassifiable/Attainment.
San Juan County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 10:
Delta County Unclassifiable/Attainment Unclassifiable/Attainment.
Gunnison County Unclassifiable/Attainment Unclassifiable/Attainment.
Hinsdale County Unclassifiable/Attainment Unclassifiable/Attainment.
Montrose County Unclassifiable/Attainment Unclassifiable/Attainment.
Ouray County Unclassifiable/Attainment Unclassifiable/Attainment.
San Miguel County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 11:
Garfield County Unclassifiable/Attainment Unclassifiable/Attainment.
Mesa County Unclassifiable/Attainment Unclassifiable/Attainment.
Moffat County Unclassifiable/Attainment Unclassifiable/Attainment.
Rio Blanco County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 12:
Eagle County Unclassifiable/Attainment Unclassifiable/Attainment.
Grand County Unclassifiable/Attainment Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment Unclassifiable/Attainment.
Pitkin County Unclassifiable/Attainment Unclassifiable/Attainment.
Routt County Unclassifiable/Attainment Unclassifiable/Attainment.
Summit County Unclassifiable/Attainment Unclassifiable/Attainment.
State AQCR 13:
Chaffee County Unclassifiable/Attainment Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment Unclassifiable/Attainment.
Fremont County Unclassifiable/Attainment Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment Unclassifiable/Attainment.
Colorado—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 § 81.306 see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.
§ 81.306, Nt.
Effective Date Note:
At 77 FR 30110, May 21, 2012, § 81.306 was amended by revising the table heading for “Colorado—Ozone (8-Hour Standard)” to read “Colorado—1997 8-Hour Ozone NAAQS (Primary and Secondary)”; and by adding a new table entitled “Colorado—2008 8-Hour Ozone NAAQS (Primary and Secondary)” following the newly designated table “Colorado—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:
§ 81.306 Colorado.
Colorado—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.
2 Excludes Indian country located in each area, unless otherwise noted.
3 Includes Indian country of the tribe listed in this table located in the identified area. Information pertaining to areas of Indian country in this table is intended for CAA planning purposes only and is not an EPA determination of Indian country status or any Indian country boundary. EPA lacks the authority to establish Indian country land status, and is making no determination of Indian country boundaries, in this table.
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO: 2 Nonattainment Marginal.
Adams County
Arapahoe County
Boulder County
Broomfield County
Denver County
Douglas County
Jefferson County
Larimer County (part)
That portion of the county that lies south of a line described as follows: Beginning at a point on Larimer County's eastern boundary and Weld County's western boundary intersected by 40 degrees, 42 minutes, and 47.1 seconds north latitude, proceed west to a point defined by the intersection of 40 degrees, 42 minutes, 47.1 seconds north latitude and 105 degrees, 29 minutes, and 40.0 seconds west longitude, thence proceed south on 105 degrees, 29 minutes, 40.0 seconds west longitude to the intersection with 40 degrees, 33 minutes and 17.4 seconds north latitude, thence proceed west on 40 degrees, 33 minutes, 17.4 seconds north latitude until this line intersects Larimer County's western boundary and Grand County's eastern boundary.
Weld County (part)
That portion of the county that lies south of a line described as follows: Beginning at a point on Weld County's eastern boundary and Logan County's western boundary intersected by 40 degrees, 42 minutes, 47.1 seconds north latitude, proceed west on 40 degrees, 42 minutes, 47.1 seconds north latitude until this line intersects Weld County's western boundary and Larimer County's eastern boundary.
Southern Ute Indian Tribe of the Southern Ute Reservation 3 Unclassifiable/Attainment
Rest of State and Rest 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.

  • 2014-05-14; vol. 79 # 93 - Wednesday, May 14, 2014
    1. 79 FR 27493 - Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Georgia; Redesignation of the Rome, Georgia, 1997 Annual Fine Particulate Matter Nonattainment Area to Attainment
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; correcting amendment.
      This rule is effective June 13, 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.

  • 2014-05-14; vol. 79 # 93 - Wednesday, May 14, 2014
    1. 79 FR 27493 - Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Georgia; Redesignation of the Rome, Georgia, 1997 Annual Fine Particulate Matter Nonattainment Area to Attainment
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; correcting amendment.
      This rule is effective June 13, 2014.
      40 CFR Parts 52 and 81