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Carbon Monoxide Maintenance Areas

As of December 05, 2013
Detailed Description of Certain Area Boundaries for Partial Counties

ALASKA


Anchorage, AK
Anchorage Municipality

(From "State Air Quality Control Plan," Volume III, Appendix B, April 5, 1978) The Anchorage Nonattainment Area is contained within the boundary described as follows:

Beginning at a point on the centerline of the New Seward Highway five hundred (500) feet of the centerline of O'Malley Road;

thence, Westerly along a line five hundred (500) south of and parallel to the centerline of O'Malley Road and its westerly extension thereof to a point on the mean high tide line of the Turnagain Arm;

thence, Northeasterly along the mean high tide line to a point five hundred (500) feet west of the southerly extension of the centerline of Sand Lake Road;

thence, Northerly along a line five hundred (500) feet west of and parallel to the southerly extension of the centerline of Sand Lake Road to a point on the southerly boundary of the International Airport property;

thence, Westerly along said property line of the International Airport to an angle point in said property line;

thence, Easterly, along said property line and its easterly extension thereof to a point five hundred (500) feet west of the southerly extension of the centerline of Wisconsin Street;

thence, Northerly along said line to a point on the mean high tide line of the Knik Arm;

thence, Northeasterly along the mean high tide line to a point on a line parallel and five hundred (500) feet north of the centerline of Thompson Street and the westerly extension thereof;

thence, Easterly along said line to a point five hundred (55) feet east of Boniface Parkway;

thence, Southerly along a line five hundred (500) feet east of and parallel to the centerline of Boniface Parkway to a point five hundred (500) feet north of the Glenn Highway;

thence, Easterly and northeasterly along a line five hundred (500) feet north of and parallel to the centerline of the Glenn Highway to a point five hundred (500) feet east of the northerly extension of the centerline of Muldoon Road;

thence, Southerly along a line five hundred (500) feet east of and parallel to the centerline of Muldoon Road and continuing southwesterly on a line of curvature five hundred (500) feet southeasterly of the centerline of curvature where Muldoon Road becomes Tudor Road to a point five hundred (500) south of the centerline of Tudor Road;

thence, Westerly along a line five hundred (500) feet south of the centerline of Tudor Road to a point five hundred (500) feet east of the centerline to Lake Otis Parkway;

thence, Westerly along a line five hundred (500) feet south of the centerline of O'Malley Road, ending at the centerline of the New Seward Highway, which is the point of the beginning.


Fairbanks, AK
Fairbanks North Star Borough

The area bounded as follows:

1. Township 1 South, Range 1 West, Sections 2 through 23, the portion of Section 1 west of the Fort Wainwright military reservation boundary and the portions of Section 24 north of the Old Richardson Highway and west of the military reservation boundary. also, Township 1 South, Range 2 West, Sections 13 and 24, the portion of Section 12 southwest of Chena Pump Road and the portions of Sections 7, 8, and 18 and the portion of Section 19 north of the Richardson Highway. (Fairbanks and Ft. Wainwright)

2. Township 2 South, Range 2 East, the portions of Sections 9 and 10 southwest of the Richardson Highway. (North Pole)


ARIZONA


Phoenix, AZ
Maricopa Co

Phoenix nonattainment area boundary:

1. Commencing at a point which is the intersection of the eastern line of Range 7 East, Gila and Salt River Baseline and Meridian, and the southern line of Township 2 South, said point is the southeastern corner of the Maricopa Association of Governments Urban Planning Area, which is the point of beginning, except that portion in the Gila River Indian Reservation;

2. thence, proceed northerly along the eastern line of Range 7 East which is the common boundary between Maricopa and Pinal Counties, as described in Arizona Revised Statute Section 11-109, to a point where the eastern line of Range 7 East intersects the northern line of Township 1 North, said point is also the intersection of the Maricopa County Line and the Tonto National Forest Boundary, as established by Executive Order 869 dated July 1, 1908, as amended and showed on the U.S. Forest Service 1969 Planimetric Maps, except that portion in the Gila River Indian Reservation;

3. thence, westerly along the northern line of Township 1 North to approximately the southwest corner of the southeast quarter of Section 35, Township 2 North, Range 7 East, National Forest and Usery Mountain Semi-Regional Park, except that portion in the Gila River Indian Reservation;

4. thence, northerly along the Tonto National Forest Boundary, which is generally the western line of the east half of Sections 26 and 35 of Township 2 North, Range 7 East, to a point which is where the quarter section line intersects with the northern line of Section 26, Township 2 North, Range 7 East, said point also being the northeast corner of the Usery Mountain Semi-Regional Park, except that portion in the Gila River Indian Reservation;

5. thence, westerly along the Tonto National Forest Boundary, which is generally the south line of Section 19, 20, 21 and 22 and the southern line of the west half of Section 23, Township 2 North, Range 7 East, to a point which is the southwest corner of Section 19, Township 2 North, Range 7 East, except that portion in the Gila River Indian Reservation;

6. thence, northerly along the Tonto National Forest Boundary to a point where the Tonto National Forest Boundary intersects with the eastern boundary of the Salt River Indian Reservation, generally described as the center line of the Salt River Channel, except that portion in the Gila River Indian Reservation;

7. thence, northeasterly and northerly along the common boundary of the Tonto National Forest and the Salt River Indian Reservation to a point which is the northeast corner of the Salt River Indian Reservation and the southeast corner of the Fort McDowell Indian Reservation, as shown on the plat dated July 22, 1902, and recorded with the U.S. Government on June 15, 1902, except that portion in the Gila River Indian Reservation;

8. thence, northeasterly along the common boundary between the Tonto National Forest and the Fort McDowell Indian Reservation to a point which is the northeast corner of the Fort McDowell Indian Reservation, except that portion in the Gila River Indian Reservation;

9. thence, southwesterly along the northern boundary of the Fort McDowell Indian Reservation, which line is a common boundary with the Tonto National Forest, to a point where the boundary intersects with the eastern line of Section 12, Township 4 North, Range 6 East, except that portion in the Gila River Indian Reservation.

10. thence, northerly along the eastern line of Range 6 East to a point where the eastern line of Range 6 East intersects with the southern line of Township 5 North, said line is the boundary between the Tonto National Forest and the east boundary of McDowell Mountain Regional Park, except that portion in the Gila River Indian Reservation;

11. thence, westerly along the southern line of Township 5 North to a point where the southern line intersects with the eastern line of Range 5 East which line is the boundary of Tonto National Forest and the north boundary of McDowell Mountain Regional Park, except that portion in the Gila River Indian Reservation;

12. thence, northerly along the eastern line of Range 5 East to a point where the eastern line of Range 5 East intersects with the northern line of Township 5 North, which line is the boundary of the Tonto National Forest, except that portion in the Gila River Indian Reservation;

13. thence, westerly along the northern line of Township 5 North to a point where the northern line of Township 5 North intersects generally in the northeast quarter of Section 17, Township 5 North, Range 1 East, as shown on the U.S. Geological Survey's Baldy Mountain, Arizona Quadrangle Map, 7.5 Minute series (Topographic), dated 1964, except that portion in the Gila River Indian Reservation;

14. thence, northerly along the eastern line of Range 4 East to a point where the eastern line of Range 4 East intersects with the northern line of Township 6 North, which line is the boundary of the Tonto National Forest, except that portion in the Gila River Indian Reservation;

15. thence, westerly along the northern line of Township 6 North to a point of intersection with the Maricopa-Yavapai County line, which is generally described in Arizona Revised Statute Section 11-109 as the center line of the Aqua Fria River (Also the north end of Lake Pleasant), except that portion in the Gila River Indian Reservation;

16. thence, southwesterly and southerly along the Maricopa-Yavapai County line to a point which is described by Arizona Revised Statute Section 11-109 as being on the center line of the Aqua Fria River, two miles southerly and below the mouth of Humbug Creek, except that portion in the Gila River Indian Reservation;

17. thence, southerly along the center line of Aqua Fria River to the intersection of the center line of the Aqua Fria River and the center line of Beardsley Canal, said point is generally in the northeast quarter of Section 17, Township 5 North, Range 1 East, as shown on the U.S. Geological Survey's Baldy Mountain, Arizona Quadrangle Map, 7.5 Minute series (Topographic), dated 1964, except that portion in the Gila River Indian Reservation;

18. thence, southwesterly and southerly along the center line of Beardsley Canal to a point which is the center line of Beardsley Canal where it intersects with the center line of Indian School Road, except that portion in the Gila River Indian Reservation;

19. thence, westerly along the center line of West Indian School Road to a point where the center line of West Indian School Road intersects with the center line of North Jackrabbit Trail, except that portion in the Gila River Indian Reservation;

20. thence, southerly along the center line of Jackrabbit Trail approximately nine and three-quarter miles to a point where the center line of Jackrabbit Trail intersects with the Gila River, said point is generally on the north-south quarter section line of Section 8, Township 1 South, Range 2 West, except that portion in the Gila River Indian Reservation;

21. thence, northeasterly and easterly up the Gila River to a point where the Gila River intersects with the northern extension of the western boundary of Estrella Mountain Regional Park, which point is generally the quarter corner of the northern line of Section 31, Township 1 North, Range 1 West, except that portion in the Gila River Indian Reservation;

22. thence, southerly along the extension of the western boundary and along the western boundary of Estrella Mountain Regional Park to a point where the southern extension of the western boundary of Estrella Mountain Regional Park intersects with the southern line of Township 1 South, except that portion in the Gila River Indian Reservation;

23. thence, easterly along the southern line of Township 1 South to a point where the south line of Township 1 South intersects with the western line of Range 1 East, which line is generally the southern boundary of Estrella Mountain Regional Park, except that portion in the Gila River Indian Reservation;

24. thence, southerly along the western line of Range 1 East to the southwest corner of Section 18, Township 2 South, Range 1 East, said line is the western boundary of the Gila River Indian Reservation, except that portion in the Gila River Indian Reservation;

25. thence, easterly along the southern boundary of the Gila River Indian Reservation which is the southern line of Sections 13, 14, 15, 16, 17, and 18, Township 2 South, Range 1 East, to the boundary between Maricopa and Pinal Counties as described in Arizona Revised Statues Section 11-109 and 11-113, which is the eastern line of Range 1 East, except that portion in the Gila River Indian Reservation;

26. thence, northerly along the eastern boundary of Range 1 East, which is the common boundary between Maricopa and Pinal Counties, to a point where the eastern line of Range 1 East intersects the Gila River, except that portion in the Gila River Indian Reservation;

27. thence, southerly up the Gila River to a point where the Gila River intersects with the southern line of Township 2 South; and

28. thence, easterly along the southern line of Township 2 South to the point of beginning which is a point where the southern line of Township 2 South intersects with the eastern line Range 7 East, except that portion in the Gila River Indian Reservation.


Tucson, AZ
Pima Co

Pima County (part) Township and Ranges as follows:

T11-12S, R12-14E;
T13-15S;
R11-16E;
and T16S, R12-16E

Gila and Salt River Baseline and Meridian excluding portions of the Saguaro National Park and the Coronado National Forest.


CALIFORNIA


Bakersfield, CA
Kern Co

Bakersfield Metropolitan Area (urbanized part - 1/25/82, 47 FR 3354)


Chico, CA
Butte Co

Chico Urbanized Area (Census Bureau urbanized part - 5/16/84, 49 FR 20651)


Lake Tahoe North Shore, CA
Placer Co

That portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vincinity of the head of the Truckee River described as follows: commencing at the point common to the aforementioned drainage area crestline and the line common to Townships 15 North and 16 North. Mount Diablo Base and Meridian (M.D.B.&M.), and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East, M.D.B.&M., thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, M.D.B.&M., to the intersection with the said drainage area crestline, thence following the said drainage area boundary in a southeasterly, then northeasterly direction to and along the Lake Tahoe Dam, thence following the said drainage area crestline in a northeasterly, then northwesterly direction to the point of beginning. [46 FR 3891, Jan 16, 1981]


Lake Tahoe South Shore, CA
El Dorado Co

That portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake, as described under 40 CFR 81.275.


Los Angeles-South Coast Air Basin, CA
Los Angeles Co

That portion of Los Angeles County which lies south and west of a line described as follows:

1. Beginning at the Los Angeles - San Bernardino County boundary and running west along the township line common to Township 3 North and Township 2 North, San Bernardino Base and Meridian;

2. then north along the range line common to Range 8 West and Range 9 West;

3. then west along the township line common to Township 4 North and Township 3 North;

4. then north along the range line common to Range 12 West and Range 13 West to the southeast corner of Section 12, Township 5 North and Range 13 West;

5. then west along the south boundaries of Sections 12, 11, 10, 9, 8, and 7, Township 5 North and Range 13 West to the boundary of the Angeles National Forest which is collinear with the range line common to Range 13 West and Range 14 West;

6. then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to Township 7 North and Township 6 North (point is at the northwest corner of Section 4 in Township 6 North and Range 14 West);

7. then west along the township line common to Township 7 North and Township 6 North;

8. then north along the range line common to Range 15 West and Range 16 West to the southeast corner of Section 13, Township 7 North and Range 16 West;

9. then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West;

10. then north along the range line common to Range 16 West and Range 17 West to the north boundary of the Angeles National Forest (collinear with the township line common to Township 8 North and Township 7 North);

11. then west along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant;

12. then west and north along this land grant boundary to the Los Angeles-Kern County boundary.

(40 CFR 81.17)

Riverside Co

That portion of Riverside County which lies to the west of a line described as follows:

1. Beginning at the Riverside - San Diego County boundary and running north along the range line common to Range 4 East and Range 3 East, San Bernardino Base and Meridian;

2. then east along the township line common to Township 8 South and Township 7 South;

3. then north along the range line common to Range 5 East and Range 4 East;

4. then west along the township line common to Township 6 South and Township 7 South to the southwest corner of Section 34, Township 6 South, Range 4 East;

5. then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East;

6. then west along the township line common to Township 5 South and Township 6 South;

7. then north along the range line common to Range 4 East and Range 3 East;

8. then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East;

9. then north along the range line common to Range 2 East and Range 3 East to the Riverside-San Bernardino county line.

San Bernardino Co

That portion of San Bernardino County which lies south and west of a line described as follows:

1. Beginning at the San Bernardino - Riverside County boundary and running north along the range line common to Range 3 East and Range 2 East, San Bernardino Base and Meridian;

2. then west along the township line common to Township 3 North and Township 2 North to the San Bernardino - Los Angeles County boundary.


Modesto, CA
Stanislaus Co

Modesto Urbanized Area (Census Bureau Urbanized Area, 3/29/85, 50 FR 12540)


San Diego, CA
San Diego Co

Western part of San Diego County = that portion of San Diego County which lies west of a line described as follows:

1. Beginning at the United States - Mexico border and running north along the range line common to range 7 East, and Range 6 East, San Bernardino Base and Meridian, to the southeast corner of Township 16 South, Range 6 East;

2. then west along the Township line common to Township 16 South and Township 17 South to the southwest corner of Township 16 South, Range 6 East;

3. then north along the range line common to Range 6 East and Range 5 East to the southeast corner of Township 14 South, Range 5 East;

4. then west along the Township line common to Township 14 South and Township 15 South to the point of intersection with the east boundary of Cuyamaca Park;

5. then north along the east boundary of Cuyamaca Park to the point of intersection with the range line common to Range 5 East and Range 4 East;

6. then north along this range line to the point of intersection with the south boundary of San Felipe Land Grant;

7. then east and north along the land grant boundary to the easternmost corner;

8. then continuing west and north along the land grant boundary to the point of intersection with the range line common to Range 5 East and Range 4 East;

9. then north along the range line to the point of interesection with the Township line common to Township 10 South and Township 9 South;

10. then west along the Township line to the point of intersection with the range line common to Range 4 East and Range 3 East;

11. then north along this range line to the San Diego - Riverside County boundary. (taken from the description of the San Diego Intrastate Air Quality Control Region as described under 40 CFR 81.164, as it existed prior to January 16, 1981.)


San Francisco-Oakland-San Jose, CA
Alameda Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

Contra Costa Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

Marin Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

San Mateo Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

Santa Clara Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

Solano Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540

Sonoma Co

Urbanized areas described in the Technical Support Document from 3/29/85, 50 FR 12540


Stockton, CA
San Joaquin Co

Stockton Urbanized Area (5/16/84, 49 FR 20651)


COLORADO


Colorado Springs, CO
El Paso Co

Colorado Springs Nonattainment Area is contained within the boundary described as follows:

Urban Transportion Planning 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.

Teller Co

Colorado Springs Nonattainment Area is contained within the boundary described as follows:

Urban Transportion Planning 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.


Denver-Boulder, CO
Adams Co

The boundaries for the Denver nonattainment area for carbon monoxide (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 6000-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 miles 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 northernmost 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 Arapaho County line;

Follow the southern boundary of Arapahoe County east to Kiowa Creek;

Follow Kiowa Creek northeast through Arapahoe and Adams counties to the Adams County-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.

Arapahoe Co

The boundaries for the Denver nonattainment area for carbon monoxide (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 6000-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 miles 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 northernmost 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 Arapaho County line;

Follow the southern boundary of Arapahoe County east to Kiowa Creek;

Follow Kiowa Creek northeast through Arapahoe and Adams counties to the Adams County-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.

Boulder Co

The boundaries for the Denver nonattainment area for carbon monoxide (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 6000-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 miles 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 northernmost 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 Arapaho County line;

Follow the southern boundary of Arapahoe County east to Kiowa Creek;

Follow Kiowa Creek northeast through Arapahoe and Adams counties to the Adams County-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.

Douglas Co

The boundaries for the Denver nonattainment area for carbon monoxide (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 6000-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 miles 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 northernmost 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 Arapaho County line;

Follow the southern boundary of Arapahoe County east to Kiowa Creek;

Follow Kiowa Creek northeast through Arapahoe and Adams counties to the Adams County-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.

Jefferson Co

The boundaries for the Denver nonattainment area for carbon monoxide (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 6000-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 miles 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 northernmost 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 Arapaho County line;

Follow the southern boundary of Arapahoe County east to Kiowa Creek;

Follow Kiowa Creek northeast through Arapahoe and Adams counties to the Adams County-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.


Fort Collins, CO
Larimer Co

The area bounded as follows:

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, CO
Weld Co

The area bounded as follows:

Urban Boundaries as defined in the North Front Range Regional Transportation Plan, May, 1990


Longmont, CO
Boulder Co

The area bounded as follows:

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.

Weld Co

The area bounded as follows:

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.


CONNECTICUT


Hartford-New Britain-Middletown, CT
Hartford Co

Bristol City, Burlington Town, Avon Town, Bloomfield Town, Canton Town, E. Granby Town, E. Hartford Town, E. Windsor Town, Enfield Town, Farmington Town, Glastonbury Town, Granby Town, Hartford city, Manchester Town, Marlborough Town, Newington Town, Rocky Hill Town, Simsbury Town, S. Windsor Town, Suffield Town, W. Hartford Town, Wethersfield Town, Windsor Town, Windsor Locks Town, Berlin Town, New Britain city, Plainville Town and Southington Town

Middlesex Co

Cromwell Town, Durham Town, E. Hampton Town, Haddam Town, Middlefield Town, Middleton city, Portland Town, E. Haddam Town

Tolland Co

Andover Town, Bolton Town, Ellington Town, Hebron Town, Somers Town, Tolland Town and Vernon Town


IDAHO


Boise-Northern Ada County, ID
Ada Co

The Boise-Ada County Nonattainment Area is described as follows:

Beginning at a point in the center of the channel of the Boise River which the section line between sections fifteen (15) and sixteen (16), township three (3) north, range four (4) east, crosses said river;

thence, down the center of the channel of the Boise River to a point opposite the mouth of More's Creek. Thence, in a straight line north forty-four (44) degrees and thirty-eight (38) minutes west until the said line intersects the north line of township five (5) north (12 Ter. Ses.67);

thence west to the northwest corner of township five (5) north, range one (1) west;

thence, southerly to the northwest corner of township three (3) north, range one (1) west;

thence east to the northwest corner of Section four (4), township three (3) north, range one (1) west;

thence, south to the southeast corner of section thirty-two (32), township two (2) north, range one (1) west;

thence, west to the northwest corner of township one (1) north, range one (1) west;

thence, southerly to the southwest corner of township one (1) north, range one (1) west, thence east to the southwest corner of section thirty-three (33), township one (1) north, range four (4) east;

thence, in a northerly direction along the north and south centerline of townships one, (1) two (2), and three (3) north, range four (4) east, Boise Meridian, to a point in the center of the channel of the Boise River where the section line between sections fifteen (15) and sixteen (16), township three (3) north, range four (4) east, Boise Meridian, crosses said Boise River, the point of beginning.


INDIANA


East Chicago, IN
Lake Co

Part of City of East Chicago (area bounded by Columbus Drive on the north, the Indiana Harbor Canal on the west, 148th St. if extended, on the south, and Euclid Ave. on the east).


Indianapolis, IN
Marion Co

Part of City of Indianapolis (area bounded by 11th St. on the north, Capitol on the west, Georgia St. on the south, and Delaware on the east).


MARYLAND


Baltimore, MD
Baltimore (City)

Regional Planning District No. 118 (generally corresponding to the Central Business District).


MICHIGAN


Detroit, MI
Macomb Co

Detroit Area included within the following (counterclockwise):

Lake St. Clair to 14 Mile Road to Kelly Road, N. to 15 Mile Road to Hayes Road, S. to 14 Mile Road to Clawson City boundary following N. Clawson City boundary to N. Royal Oak City boundary to 13 Mile Road to Evergreen Road to southern Beverly Hills City boundary to southern Bingham Farms City boundary to southern Franklin City boundary to Inkster Road, south to Pennsylvania Road, extending east to the Detroit River.

Oakland Co

Detroit Area included within the following (counterclockwise):

Lake St. Clair to 14 Mile Road to Kelly Road, N. to 15 Mile Road to Hayes Road, S. to 14 Mile Road to Clawson City boundary following N. Clawson City boundary to N. Royal Oak City boundary to 13 Mile Road to Evergreen Road to southern Beverly Hills City boundary to southern Bingham Farms City boundary to southern Franklin City boundary to Inkster Road, south to Pennsylvania Road, extending east to the Detroit River.

Wayne Co

Detroit Area included within the following (counterclockwise):

Lake St. Clair to 14 Mile Road to Kelly Road, N. to 15 Mile Road to Hayes Road, S. to 14 Mile Road to Clawson City boundary following N. Clawson City boundary to N. Royal Oak City boundary to 13 Mile Road to Evergreen Road to southern Beverly Hills City boundary to southern Bingham Farms City boundary to southern Franklin City boundary to Inkster Road, south to Pennsylvania Road, extending east to the Detroit River.


MINNESOTA


Minneapolis-St. Paul, MN
Carver Co

Carver, Chanhassen, Chaska, Hamburg, Norwood, Victoria, Waconia, Watertown, Young America, Chaska Township, Laketown Township, Waconia Township, Watertown Township, Young America Township.

Dakota Co

Apple Valley, Burnsville, Eagan, Farmington, Hastings, Inver Grove Heights, Lakeville, Lilydale, Mendota, Mendota Heights, Rosemount, South St. Paul, Sunfish Lake, West St. Paul.

Scott Co

Belle Plaine, Elko, New Market, New Prague, Prior Lake, Savage, Shakopee,Credit River Township, Jackson Township, Louisville Township, New Market Township,Spring Lake Township.

Wright Co

Albertville, Annandale, Buffalo, Clearwater, Cokato, Delano, Hanover, Monticello, Montrose, Rockford, St. Michael, South Haven, Waverly, Dayton (Wright Co. part), Buffalo Township, Chatham Township, Clearwater Township, Cokato Township, Corrinna Township, Frankfort Township, Maple Lake Township, Franklin Township, Marysville Township, Monticello Township, Ostego Township, Rockford Township, Silver Creek Township, Southside Township.


MONTANA


Billings, MT
Yellowstone Co

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


Great Falls, MT
Cascade Co

The area bounded as follows:

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, MT
Missoula Co

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


NEW JERSEY


Penns Grove, NJ
Salem Co

Borough of Penns Grove, Those potions within 100 yeards of the intersections of U.S. Route 130 and County Roads 675 & 607.


OREGON


Eugene-Springfield, OR
Lane Co

The area within the bounds beginning at the Northwest corner of T17S, R4W;
extending South to the Southwest corner of Section 6, T17S, R4W;
thence East to the Northwest corner of Section 8, T17S, R4W;
thence South to the Southwest corner of Section 32, T17S, R4W;
thence East to hte Northeast corner of Section 4, T18S, R4W;
thence South to the Southwest corner of section 3, T18S, R4W;
thence East to the Northwest corner of Section 12, T18S, R4W;
thence South to the Southwest corner of Section 13, T18S, R4W;
thence East to the Northeast corner of Section 24, T18S, R4W;
thence South to the Southeast corner of Section 24, T18S, R4W;
thence East to the Northeast corner of Section 21, T18S, R3W;
thence North to the Northeast corner of Section 21, T18S, R3W;
thence East to the Northeast corner of Section 22, T18S, R3W;
thence South to the Southwest corner of Section 23, T18S, R3W;
thence East to the Southeast corner of Section 24, T18S, R3W;
thence North to the Souteast corner of Section 1, T18S, R3W;
thence East to the Southeast corner of Section 2, T18S, R2W;
thence North to the Northeast corner of Section 26, T17S, R2W;
thence West to the Southwest corner of Section 20, T17S, R2W;
thence North to the Northwest corner of Section 20, T17S, R2W;
thence West to the Southwest corner of Section 13, T17S, R3W;
thence North to the Northwest corner of Section 13, T17S, R3W;
thence West to the Southwest corner of Section 11, T17S, R3W;
thence North to the Northwest corner of Section 11, T17S, R3W;
thence West to the Southwest corner of Section 6, T17S, R3W;
thence North to the Northwest corner of Section 31, T16S, R3W;
thence West to the Northwest corner of Section 23, T16S, R3W;
thence West to the Northwest corner of Section 34, T16S, R4W;
thence South to the Southwest corner of Section 34, T16S, R4W;
thence West to the point of beginning.


PENNSYLVANIA


Philadelphia-Camden Co, PA-NJ
Philadelphia Co

City of Philadelphia - high traffic areas within the Central Business District and certain other high traffic density areas.


Pittsburgh, PA
Allegheny Co

High traffic density areas within the Central Business District and certain other high traffic density areas.


TEXAS


El Paso, TX
El Paso Co

The area bounded as follows:

That portion of the City of El Paso bounded on the north by Highway 10 from Porfirio Diaz Street to Raynolds Street, Raynolds Street from Highway 10 to the Southern Pacific Railroad lines, the Southern Pacific Railroad lines from Raynolds Street to Highway 62, Highway 62 from the Southern Pacific Railroad lines to Highway 20 and Highway 20 from Highway 62 to Polo Inn Road;

bounded on the east by Polo Inn Road from Highway 20 to the Texas Mexico border;

bounded from the south by the Texas-Mexico border from Polo Inn Road to Porfirio Diaz Street;

and bounded on the west by Porfirio Diaz Street from the Texas-Mexico border to Highway 10.


WASHINGTON


Seattle-Tacoma, WA
King Co

Seattle-Tacoma Urban Area (as defined by the Washington Department of Transportation urban area maps

Pierce Co

Seattle-Tacoma Urban Area (as defined by the Washington Department of Transportation urban area maps)

Snohomish Co

Seattle-Tacoma Urban Area (as defined by the Washington Department of Transportation urban area maps)


Spokane, WA
Spokane Co

Spokane urban area (as defined by the Washington Department of Transportation urban area maps)


Yakima, WA
Yakima Co

The area bounded as follows:

Portion of the Central Business District Street Intersections:

S 16th Ave / W Mead Ave S 16th Ave / Hathaway Ave

E "I" St / N 1st St N 1st St / E "G" St

E "G" St / N 8th St N 8th St / Pitcher St

Pitcher St / I-82 Interchange Nob Hill Blvd Interchange

Nob Hill Blvd Interchange Rudkin Road Interchange

S 1st St / Old Town Rd / Main St W Washington / S 1st St

E Mead Ave / S 1st St S 16th Ave / W Mead Ave



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