1. Regulations
  2. title 40
  3. chapter I-i19
  4. part 81
  5. subpart C
  6. § 81.305

View all text of Subpart C [§ 81.300 - § 81.356]

§ 81.305 - California.

California—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards North Coast Air Basin: Del Norte CountyX Humboldt CountyX Mendocino CountyX Sonoma County (North Coast Air Basin portion)X Trinity CountyX Lake County Air BasinX North Central Coast Air BasinX South Central Coast Air Basin: San Luis Obispo County: Salinas Valley-El Pomar Estrella Planning AreaX Non-Salinas ValleyX Santa Barbara County (AQMA portion)X Santa Barbara County (Non-AQMA portion): A. West area of north-south boundary separating Santa Ynez and Lompoc Valleys: Santa Maria AreaX Outside Santa Maria AreaX B. East area of north-south boundary separating Santa Ynez and Lompoc ValleysX Ventura County: North of 34°23′ North LatitudeX South of 34°23′ North LatitudeX Channel IslandsX San Diego Air Basin: San Diego County (West portion)X San Diego County (East portion)X South Coast Air BasinX San Joaquin Valley Air BasinX Sacramento Valley Air Basin (SVAB): Sacramento CountyX Solano County (SVAB Portion)X Yolo CountyX Butte CountyX Colusa CountyX Glenn CountyX Shasta County (Sacramento Valley portion)X Sutter CountyX Tehama CountyX Yuba CountyX Great Basin Valleys Air Basin Northeast Plateau Air Basin (NEPAB): Shasta County (NEPAB portion)X Rest of Air BasinX Southeast Desert Air Basin: Kern County (S.E. Desert Air Basin Portion)X Imperial CountyX Los Angeles County (S.E. Desert Air Basin Portion): Lancaster Quartz Hill AreaX Outside Lancaster Quartz Hill AreaX Riverside County (Coachella Valley planning area)X Riverside County (remainder of County) San Bernardino County (S.E. Desert AQMA Portion): Victorville AreaX Non-Victorville AreaX Riverside County (non-AQMA Portion)X San Bernardino County (non-AQMA Portion)X Lake Tahoe Air BasinX San Francisco Bay Area Air Basin: Solano County (S.F. Bay Area Air Basin portion)X San Mateo CountyX Marin CountyX Napa CountyX Sonoma County (S.F. Bay Area Air Basin portion)X Alameda CountyX Contra Costa CountyX San Francisco CountyX Santa Clara CountyX Rest of Air BasinX Mountain Counties Air Basin: Placer County (AQMA portion)X Placer County (excluding AQMA portion and Lake Tahoe portion)X Amador CountyX Calaveras CountyX El Dorado County (excluding Lake Tahoe Air Basin portion)X Mariposa CountyX Nevada CountyX Plumas CountyX Sierra CountyX Tuolumne CountyX

California—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards North Coast Air Basin: Del Norte CountyX Humboldt CountyX Mendocino CountyX Sonoma County (North Coast Basin portion)X Trinity CountyX Lake County Air BasinX San Francisco Bay Area Air BasinX North Central Coast Air Basin: Monterey CountyX San Benito CountyX Santa Cruz CountyX South Central Coast Air Basin: San Luis Obispo CountyX Santa Barbara County (AQMA portion)X Santa Barbara County (non-AQMA portion)X Ventura CountyX Channel IslandsX San Diego Air Basin: San Diego County (West portion)X San Diego County (East portion)X South Coast Air Basin: Los Angeles County (South Coast Air Basin portion)X Orange CountyX Riverside County (South Coast Air Basin portion)X South Coast Basin portion of San Bernardino County San Joaquin Valley Air Basin: Fresno CountyX Kern CountyX Kings CountyX Madera CountyX Merced CountyX San Joaquin CountyX Stanislaus CountyX Tulare CountyX Sacramento Valley Air BasinX Great Basin Valley's Air BasinX North East Plateau Air BasinX Mountain Counties Air BasinX Southeast Desert Air Basin excluding Imperial CoX Imperial CountyX Lake Tahoe Air BasinX

California—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation Date 2Type Great Basin Valleys Air BasinAttainment/Unclassifiable. Alpine County Inyo County Mono County Lake County Air BasinAttainment/Unclassifiable. Lake County Lake Tahoe Air BasinAttainment/Unclassifiable. El Dorado County (part) That portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake Placer County (part) That portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, 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 direction, 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 Mojave Desert Air BasinAttainment/Unclassifiable. Kern County (part) That portion of Kern County east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grantto the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grantto the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31 T. 28 S., R. 32E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Los Angeles County (part) That portion of Los Angeles County which lies north and east of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T. 3 N and T. 2 N, San Bernardino Base and Meridian; then north along the range line common to R. 8 W and R. 9 W; then west along the township line common to T. 4 N and T. 3 N; then north along the range line common to R. 12 W and R. 13 W to the southeast corner of Section 12, T. 5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T. 5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T. 7 N and T. 6 N (point is at the northwest corner of Section 4 in T. 6 N, R. 14 W); then west along the township line common to T. 7 N and T. 6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T. 7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T. 7 N, R. 16 W; then north along the range line common to R. 16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T. 8 N and T. 7 N) then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Riverside County (part) That portion of Riverside County which lies east of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to R. 17 E. and R. 16 E., San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through T. 8 S., R. 16 E. and T. 7 S., R. 16 E., until the Black Butte Mountain, elev. 4504′; then west and northwest along the ridge line to the southwest corner of T. 5 S., R. 14 E.; then north along the range line common to R. 14 E. and R. 13 E.; then west and northwest along the ridge line to Monument Mountain, elev. 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line San Bernardino County (part) That portion of San Bernardino County east and north of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E, San Bernardino Base and Meridian; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary Mountain Counties Air BasinAttainment/Unclassifiable. Amador County Calaveras County El Dorado County (part) All of El Dorado County except that portion included in the Lake Tahoe Air Basin Mariposa County Nevada County Placer County (part) All of Placer County except that portion included in the Lake Tahoe Air Basin and that portion included in the Sacramento Valley Air Basin Plumas County Sierra County Tuolumne County North Central Air BasinAttainment/Unclassifiable. Monterey County San Benito County Santa Cruz County North Coast Air BasinAttainment/Unclassifiable. Del Norte County Humboldt County Mendocino County Sonoma County (part) That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California Trinity County Northeast Plateau Air BasinAttainment/Unclassifiable. Lassen County Modoc County Siskiyou County Sacramento Valley Air BasinAttainment/Unclassifiable. Butte County Colusa County Glenn County Placer County (part) That portion of Placer County which lies west of Range 9 east, M.D.B. & M Sacramento County Shasta County Solano County (part) That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties Sutter County Tehama County Yolo County Yuba County Salton Sea Air BasinAttainment/Unclassifiable. Imperial County Riverside County (part) That portion of Riverside County which lies east of a line described as follows: Beginning at the Riverside-San Diego County boundary and running north along the range line common to R. 4 E and R. 3 E; then east along the township line common to T. 8 S and T. 7 S; then north along the range line common to R. 5 E and R. 4 E; then west along the township line common to T. 6 S and T. 7 S to the southwest corner of Section 34, T. 6 S, R. 4 E; then north along the west boundaries of Sections 34, 27, 22, 15, 10, 3, T. 6 S, R. 4 E; then west along the township line common to T. 5 S and T. 6 S; then north along the range line common to R. 4 E and R. 3 E; then west along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, T. 5 S. R. 3 E; then north along the range line common to R. 2 E and R. 3 E to the Riverside-San Bernardino County line; and west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to R. 17 E. and R. 16 E., San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through T. 8 S., R. 16 E. and T. 7 S., R. 16 E., until the Black Butte Mountain, elev. 4504′; then west and northwest along the ridge line to the southwest corner of T. 5 S., R. 14 E.; then north along the range line common to R. 14 E. and R. 13 E.; then west and northwest along the ridge line to Monument Mountain, elev. 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line San Diego Air BasinAttainment/Unclassifiable. San Diego County San Francisco Bay Area Air BasinAttainment/Unclassifiable. Alameda County Contra Costa County Marin County Napa County San Francisco County San Mateo County Santa Clara County Solano County (part) That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties Sonoma County (part) That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California San Joaquin Valley Air BasinAttainment/Unclassifiable. Fresno County Kern County (part) That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Kings County Madera County Merced County San Joaquin County Stanislaus County Tulare County South Central Air BasinAttainment/Unclassifiable. San Luis Obispo County Santa Barbara County Ventura County South Coast Air BasinAttainment/Unclassifiable. Los Angeles County (part) That portion of Los Angeles County which lies south and west of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T.3 N and T.2 N, San Bernardino Base and Meridian; then north along the range line common to R.8 W and R.9 W; then west along the township line common to T.4 N and T.3 N; then north along the range line common to R.12 W and R.13 W to the southeast corner of Section 12, T.5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T.5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T.7 N and T. 6 N (point is at the northwest corner of Section 4 in T.6 N, R. 14 W); then west along the township line common to T.7 N and T.6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T.7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T.7 N, R. 16 W; then north along the range line common to R.16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T.8 N and T.7 N); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Orange County Riverside County (part) That portion of Riverside County which lies west of a line described as follows: Beginning at the Riverside-San Diego County boundary and running north along the range line common to R. 4 E and R. 3 E; then east along the township line common to T. 8 S and T. 7 S; then north along the range line common to R. 5 E and R. 4 E; then west along the township line common to T. 6 S and T. 7 S to the southwest corner of Section 34, T. 6 S, R. 4 E; then north along the west boundaries of Sections 34, 27, 22, 15, 10, 3, T. 6 S, R. 4 E; then west along the township line common to T. 5 S and T. 6 S; then north along the range line common to R. 4 E and R. 3 E; then west along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, T. 5 S. R. 3 E; then north along the range line common to R. 2 E and R. 3 E to the Riverside-San Bernardino County line San Bernardino County (part) That portion of San Bernardino County west and south of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is April 9, 2018, unless otherwise noted.

California—Carbon Monoxide

Designated Area Designation Classification Date 1Type Date 1Type Bakersfield Area: Kern County (part) Bakersfield Metropolitan Area (Urbanized part)6/1/98AttainmentChico Area: Butte County (part)
Chico Urbanized Area (Census Bureau Urbanized part)		6/1/98Attainment Fresno Area: Fresno County (part)
Fresno Urbanized Area		6/1/98Attainment Lake Tahoe North Shore Area: Placer County (part)
That portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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		June 1, 1998Attainment Lake Tahoe South Shore Area: El Dorado County (part)
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		6/1/98Attainment Los Angeles-South Coast Air Basin Area6/11/07Attainment Los Angeles County (part)—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. Tthen 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. Orange County: Riverside County (part)—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 County—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 Area: Stanislaus County (part)
Modesto Urbanized Area (Census Bureau Urbanized Area)		6/1/98AttainmentSacramento Area: Census Bureau Urbanized Area)6/1/98AttainmentPlacer County (part) Sacramento County (part) Yolo County (part) San Diego Area: San Diego County (part)
The Western Section of Air Pollution Control District of San Diego County is defined as all that portion of San Diego County, State of California, lying westerly of the following described line:		6/1/98Attainment 1. Beginning at the Northwest of Township 9 South, Range 1 West, San Bernardino Base and Meridian; 2. thence running Southerly along the West line of said township to the south line therof; 3. thence Easterly along said South line to the range line between Range 1 West and Range 1 East; 4. thence Southerly along said range line to the township line between Township 11 South and 12 South; 5. thence Easterly along said township line to the range line between Range 1 East and Range 2 East; 6. thence Southerly along said range line to the international boundary between the United States of America and Mexico. San Francisco-Oakland-San Jose Area: Urbanized Areas6/1/98Attainment Alameda County (part) Contra Costa County (part) Marin County (part) Napa County (part) San Francisco County San Mateo County (part) Santa Clara County (part) Solano County (part) Sonoma County (part) Stockton Area: San Joaquin County (part)6/1/98Attainment Stockton Urbanized Area Great Basin Valley Air BasinUnclassifiable/Attainment Alpine County Inyo County Mono County Lake County Air Basin Lake CountyUnclassifiable/Attainment Mountain Counties Air Basin Amador CountyUnclassifiable/Attainment Calaveras CountyUnclassifiable/Attainment El Dorado County (part) excluding Lake Tahoe South ShoreUnclassifiable/Attainment Mariposa CountyUnclassifiable/Attainment Nevada CountyUnclassifiable/Attainment Placer County (part) excluding Lake Tahoe Air Basin portion and AQMA portionUnclassifiable/Attainment AQMA portion (of Placer County)Unclassifiable/Attainment Plumas CountyUnclassifiable/Attainment Sierra CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment North Central Coast Air Basin Monterey CountyUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment North Coast Air BasinUnclassifiable/Attainment Del Norte County Humboldt County Mendocino County Sonoma County (part) Remainder of County Trinity County Northeast Plateau Air BasinUnclassifiable/Attainment Lassen County Modoc County Siskiyou County Sacramento Valley Air Basin (portion) Butte County (part) Area other than Chico Urbanized Area (Census Bureau urbanized part)Unclassifiable/Attainment Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Sacramento County (part) Area other than Census Bureau urbanized areasUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Solano County (part) Sacramento Valley Air Basin portionUnclassifiable/Attainment Sutter CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment Yolo County (part) Area outside Census Bureau urbanized areasUnclassifiable/Attainment Yuba CountyUnclassifiable/Attainment San Diego Air Basin (Remainder of) San Diego County (part) Remainder of CountyUnclassifiable/Attainment San Francisco Bay Area Air BasinUnclassifiable/Attainment Area other than urbanized Areas Alameda County (part) Contra Costa County (part) Marin County (part) Napa County (part) San Mateo County (part) Santa Clara County (part) Solano County (part) Sonoma County (part) San Joaquin Valley Air Basin Fresno County (part) Outside Fresno Urbanized AreaUnclassifiable/Attainment Kern County (part) Area other than Bakersfield Metropolitan Area (Urbanized part)Unclassifiable/Attainment Kings CountyUnclassifiable/Attainment Madera CountyUnclassifiable/Attainment Merced CountyUnclassifiable/Attainment San Joaquin County (part) Outside Stockton urbanized areaUnclassifiable/Attainment Stanislaus County (part) Outside Modesto Urbanized Area (Census Bureau Urbanized Area)Unclassifiable/Attainment Tulare CountyUnclassifiable/Attainment South Central Coast Air Basin Channel IslandsUnclassifiable/Attainment San Luis Obispo CountyUnclassifiable/Attainment Santa Barbara CountyUnclassifiable/Attainment Ventura CountyUnclassifiable/Attainment Southeast Desert Air Basin Imperial CountyUnclassifiable/Attainment Kern County (part) excluding San Joaquin Valley portionUnclassifiable/Attainment Los Angeles County excluding Los Angeles - South Coast Air Basin portionUnclassifiable/Attainment Riverside County (part) Portion excluding Los Angeles-South Coast Air BasinUnclassifiable/Attainment. San Bernardino Co(part) AQMA portion (excluding Los Angeles - South Coast Air Basin)Unclassifiable/Attainment Non-AQMA portion (excluding Los Angeles - South Coast Air Basin)Unclassifiable/Attainment

1 This date is November 15, 1990, unless otherwise noted.

California—Ozone (1-Hour Standard) 4

Designated area Designation Classification Date 1Type Date 1Type Chico Area: Butte County( 3)Nonattainment( 3)Sec. 185A Area. 2Imperial County Area: Imperial County11/15/90Nonattainment11/15/90Sec. 185A Area. 2Los Angeles-South Coast Air Basin Area 511/15/90Nonattainment11/15/90Extreme. Los Angeles County (part)11/15/90Nonattainment11/15/90Extreme. 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 and north 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. Orange County11/15/90Nonattainment11/15/90Extreme. Riverside County (part)11/15/90Nonattainment11/15/90Extreme. 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 County (part)11/15/90Nonattainment11/15/90Extreme. 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. Morongo Band of Mission Indians 611/15/90Nonattainment11/15/90Severe-17. Monterey Bay AreaAttainment Monterey County San Benito County Santa Cruz County Sacramento Metro Area11/15/90Nonattainment6/01/95Severe-15. El Dorado County (part): All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. Placer County (part): All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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.11/15/90Nonattainment6/01/95Severe-15. Sacramento County11/15/90Nonattainment6/01/95Severe-15. Solano County (part) That portion of Solano County which lies north and east of a line described as follows:11/15/90Nonattainment6/01/95Severe-15. Description of boundary in Solano county between San Francisco and Sacramento: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; T. 6 N., R. 2 W., M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T. 6 N., R. 2 W., thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N., R. 1 W., thence east along a line common to T. 5 N. and T. 6 N. to the northeast corner of Section 3, T. 5 N., R. 1 E., thence south along section lines to the southeast corner of Section 10, T. 3 N., R. 1 E., thence east along section lines to the south 1/4 corner of Section 8, T. 3 N., R. 2 E., thence east to the boundary between Solano and Sacramento Counties11/15/90Nonattainment6/01/95Severe-15. Sutter County (part—southern portion)South of a line connecting the northern border of Yolo Co. to the SW tip of Yuba Co. and continuing along the southern Yuba County border to Placer County.11/15/90Nonattainment6/01/95Severe-15. Yolo County11/15/90Nonattainment6/01/95Severe-15. San Diego Area: San Diego County7/28/03Attainment San Francisco-Bay Area8/10/98Nonattainment8/10/98Not classified/Moderate under 23 U.S.C. 8/23/99104(b)(2). Alameda County8/10/98......do8/23/99 Do. Contra Costa County8/10/98......do8/23/99 Do. Marin County8/10/98......do8/23/99 Do. Napa County8/10/98......do8/23/99 Do. San Francisco County8/10/98......do8/23/99 Do. San Mateo County8/10/98......do8/23/99 Do. Santa Clara County8/10/98......do8/23/99 Do. Solano County (part)8/10/98......do8/23/99 Do. That portion of the county that lies south and west of the line described that follows: Description of boundary in Solano County between San Francisco and Sacramento: Beginning at the intersection at the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; T.6 N., R. 2 W., M.D.B. & M., thence east along said 1/2 section line to the east boundary of Section 36, T. 6 N., R. 2 W., thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N., R. 1 W, thence east along a line common to T. 5 N., and T. 6 N. to the northeast corner of Section 3, T. 5 N., R. 1 E., thence south along section lines to the southeast corner of Section 10 T. 3 N., R. 1 E., thence east along section lines to the south 1/4 corner of Section 8 T. 3 N., R. 2 E., thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part)8/10/98......do8/23/99 Do. That portion of Sonoma county which lies south and east of a line described as follows: Beginning at the south-easterly corner of the Rancho Estero Americano, being on the boundary line between Marin Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive, thence running along said boundary of Rancho Canada de Jonive westerly,; northerly and easterly to its intersection with the easterly line of Granton Road; thence running along the easterly and southerly line of Granton Road northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly and northerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road: thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Ranco Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 north, Mt. Diablo Base and Meridian; thence running easterly along said Township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California. East Kern County: That portion of Kern County that lies east and south of a line described below: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East, then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County Boundary6/21/04Attainment San Joaquin Valley Area: Fresno County11/15/90Nonattainment05/17/04Extreme Kern County (part). That portion of Kern County that lies west and north of a line described below:11/15/90Nonattainment05/17/04Extreme Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Pliebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary: Kings County11/15/90Nonattainment05/17/04Extreme Madera County11/15/90Nonattainment05/17/04Extreme Merced County11/15/90Nonattainment05/17/04Extreme San Joaquin County11/15/90Nonattainment05/17/04Extreme Stanislaus County11/15/90Nonattainment05/17/04Extreme Tulare County11/15/90Nonattainment05/17/04Extreme Santa Barbara-Santa Maria-Lompoc Area: Santa Barbara County8/8/03Attainment Southeast Desert Modified AQMA Area11/15/90Nonattainment11/15/90Severe-17. Los Angeles County (part)—that portion of Los Angeles County which lies north and east 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. Riverside County11/15/90Nonattainment11/15/90Severe-17 Coachella Valley planning area—that portion of Riverside County which lies to the east 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 and that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: 10. Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; 11. then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, elevation 4504 feet; 12. then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; 13. then north along the range line common to Range 14 East and Range 13 East; 14. then west and northwest along the ridge line to Monument Mountain, elevation 4834 feet; 15. then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elevation 5814 feet; 16. then northwest along the ridge line to the Riverside-San Bernardino County line San Bernadino County (part)—that portion of San Bernardino County which lies north and east of a line described as follows:11/15/90Nonattainment11/15/90Severe-17. 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; and that portion of San Bernardino County which lies south and west of a line described as follows: 3. latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west. Ventura County Area: Ventura County11/15/90Nonattainment11/15/90Severe-15. Yuba City Area: Sutter County (part—northern portion)( 3)Nonattainment( 3)Sec. 185A Area.2. North of a line connecting the northern border of Yolo County to the SW tip of Yuba County and continuing along the southern Yuba County border to Placer County. Yuba County( 3)Nonattainment( 3)Sec. 185A Area.2. Great Basin Valleys Air BasinUnclassifiable/Attainment Alpine County Inyo County Mono County Lake County Air BasinUnclassifiable/Attainment Lake County Lake Tahoe Air BasinUnclassifiable/Attainment El Dorado County (part) Lake Tahoe Area: As described under 40 CFR 81.275. Placer County (part) Lake Tahoe Area: As described under 40 CFR 81.275. Mountain Counties Air Basin (Remainder of): Amador County11/15/90Unclassifiable/Attainment11/15/90 Calaveras County11/15/90Unclassifiable/Attainment11/15/90 Mariposa CountyUnclassifiable/Attainment Nevada CountyUnclassifiable/Attainment Plumas CountyUnclassifiable/Attainment Sierra CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment North Coast Air BasinUnclassifiable/Attainment Del Norte County Humboldt County Mendocino County Sonoma County (part) Remainder of County Trinity County Northeast Plateau Air BasinUnclassifiable/Attainment Lassen County Modoc County Siskiyou Couny Sacramento Valley Air Basin (Remainder of): Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment South Central Coast Air Basin (Remainder of): Channel IslandsUnclassifiable/Attainment San Luis Obispo CountyUnclassifiable/Attainment Southeast Desert NON-AQMA: Riverside County (part) Remainder of countyUnclassifiable/Attainment San Bernadino County (part) Remainder of countyUnclassifiable/Attainment

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 California. The Monterey Bay, San Diego, and Santa Barbara-Santa Maria-Lompoc areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

5 Excludes Morongo Band of Mission Indians' Indian country in Riverside County.

6 Includes Indian country of the tribe listed in this table. 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.

California—PM-10

Designated Area Designation Classification Date Type Date Type Inyo County Coso Junction planning areaOctober 4, 2010Attainment That portion of Inyo County contained within Hydrologic Unit #18090205 Owens Valley planning area11/15/90Nonattainment02/08/93Serious Hydrologic Unit #18090103 Sacramento County10/28/2013Attainment. San Bernardino County: San Bernardino (part): Excluding that portion located in the Trona planning area and excluding that portion located in the South Coast Air Basin1/20/94Nonattainment1/20/94Moderate. Trona planning area: That portion of San Bernardino County contained within Hydrologic Unit #180902859/5/02Nonattainment9/5/02Moderate Mono County Mammoth Lakes planning area11/4/15Attainment Includes the following sections: a. Sections 1-12, 17, and 18 of Township T4S, R28E; b. Sections 25-36 of Township T3S, R28E; c. Sections 25-36 of Township T3S, R27E; d. Sections 1-18 of Township T4S, R27E; and, e. Sections 25 and 36 of Township T3S, R26E. Mono Basin Hydrologic Unit 180901012/29/93Nonattainment12/29/93Moderate Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, Tulare Counties: Indian Wells Valley planning area: That portion of Kern County contained within Hydrologic Unit #180902056/6/03Attainment San Joaquin Valley Air Basin; Fresno County, Kings County, Madera County, Merced County, San Joaquin County, Stanislaus County, Tulare County, and that portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary12/12/08Attainment East Kern: That portion of Kern County which lies between the following two lines (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley):11/15/90Nonattainment02/08/93Serious. (1) West and north of a line described as follows: Beginning at the southwest corner of section 31, T. 10 N 16 W and running east to the northwest boundary of the Rancho La Liebre Land Grant; then running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to R. 15 W. and R. 16 W., San Bernardino Base and Meridian; then north along the range line to the northwest corner of section 2, T. 32 S., R. 32 E., Mount Diablo Base and Meridian; then east along the township line common to T. 32 S. and T. 31 S.; then north along the range line common to R. 35 E. and R. 34 E.; then east along the township line common to T. 29 S. and T. 28 S.; then north along the range line common to R. 36 E. and R. 35 E.; then east along the township line common to T. 28 S. and T. 27 S.; then north along the range line common to R. 37 E. and R. 36 E. to the Kern-Tulare County boundary (2) East and south of a line of a line described as follows: Beginning at the southwest corner of section 31, T. 10 N 16 W and running north along the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Riverside, Los Angeles, Orange, and San Bernardino Counties South Coast Air Basin7/26/13AttainmentRiverside County Coachella Valley planning area11/15/90Nonattainment02/08/93Serious. Imperial County: Imperial Valley planning area: That portion of Imperial County that is defined as follows:10/19/2020Attainment Commencing at the southwest corner of Imperial County and extending north along the Imperial-San Diego County line to the northwest corner of Imperial County; then east along the Imperial-Riverside County line to the point of intersection of the eastern boundary line of Hydrologic Unit #18100200; then southeasterly along the eastern boundary line of Hydrologic Unit #18100200 to the Imperial County-Mexico Border; then west along the Imperial County-Mexico Border to the point of the beginning.Rest of State11/15/90Unclassifiable

California—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date 2Type Los Angeles-South Coast Air Basin, CA: Los Angeles County (part)NonattainmentModerate That portion of Los Angeles County which lies south and west of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Orange CountyNonattainmentModerate. Riverside County (part)NonattainmentModerate. That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line San Bernardino County (part)NonattainmentModerate. That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary San Diego, CA: San Diego CountyUnclassifiable/AttainmentSan Joaquin Valley, CA: Fresno CountyNonattainment5/7/15Serious. Kern County (part)Nonattainment5/7/15Serious. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Kings CountyNonattainment5/7/15Serious. Madera CountyNonattainment5/7/15Serious. Merced CountyNonattainment5/7/15Serious. San Joaquin CountyNonattainment5/7/15Serious. Stanislaus CountyNonattainment5/7/15Serious. Tulare CountyNonattainment5/7/15Serious. North Coast Air Basin: Del Norte CountyUnclassifiable/Attainment Humboldt CountyUnclassifiable/Attainment Mendocino CountyUnclassifiable/Attainment Sonoma County (part)Unclassifiable/Attainment That portion of Sonoma county which lies north and west of a line described as follows: Beginning at the south-easterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive, thence running along said boundary of Rancho Canada de Jonive westerly; northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly and northerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road: thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 north, Mt. Diablo Base and Meridian; thence running easterly along said Township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California Trinity County3/7/11Unclassifiable/Attainment Northeast Plateau Air Basin: Lassen County3/7/11Unclassifiable/Attainment Modoc County3/7/11Unclassifiable/Attainment Siskiyou County3/7/11Unclassifiable/Attainment Lake County Air Basin: Lake CountyUnclassifiable/Attainment Upper Sacramento Valley Region: Butte County (remainder)3/7/11Unclassifiable/Attainment Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Shasta County3/7/11Unclassifiable/Attainment Sutter County (part)Unclassifiable/Attainment Tehama County3/7/11Unclassifiable/Attainment Yuba County (remainder)3/7/11Unclassifiable/Attainment Sacramento Metropolitan Region: El Dorado County (part)Unclassifiable/Attainment All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake Placer County (part)Unclassifiable/Attainment All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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 Sacramento CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties Sutter County (part)Unclassifiable/Attainment That portion south of a line connecting the northern border of Yolo County to the southwest tip of Yuba County and continuing along the southern Yuba County border to Placer County Yolo CountyUnclassifiable/Attainment Northern Mountain Counties: Nevada CountyUnclassifiable/Attainment. Plumas County3/7/11Unclassifiable/Attainment Sierra County3/7/11Unclassifiable/Attainment Central Mountain Counties: Amador CountyUnclassifiable/Attainment Calaveras CountyUnclassifiable/Attainment Southern Mountain Counties: Mariposa CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment Lake Tahoe Air Basin: El Dorado County (part)Unclassifiable/Attainment That portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. Placer County (part)Unclassifiable/Attainment That portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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 San Francisco Bay Area Air Basin: Alameda CountyUnclassifiable/Attainment Contra Costa CountyUnclassifiable/Attainment Marin CountyUnclassifiable/Attainment Napa CountyUnclassifiable/Attainment San Francisco CountyUnclassifiable/Attainment San Mateo CountyUnclassifiable/Attainment Santa Clara CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment Portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties Sonoma County (part)Unclassifiable/Attainment. That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties North Central Coast Air Basin: Monterey CountyUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment San Luis Obispo County: San Luis Obispo CountyUnclassifiable/Attainment Santa Barbara County: Santa Barbara County (part)Unclassifiable/Attainment Excluding San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands Santa Barbara County (part)Unclassifiable/Attainment San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands. Ventura County: Ventura County (part)Unclassifiable/Attainment Excluding Anacapa and San Nicolas Islands. Ventura County (part)Unclassifiable/Attainment Anacapa and San Nicolas Islands. Great Basin Valleys Air Basin: Alpine CountyUnclassifiable/Attainment Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that lies outside Hydrologic Unit Number 18090205. Mono CountyUnclassifiable/Attainment Coso Junction: Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that lies inside Hydrologic Unit Number 18090205. Eastern Kern County: Kern County (part)Unclassifiable/Attainment That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern—Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary Indian Wells Valley: Kern County (part)Unclassifiable/Attainment That portion of Kern County that lies inside Hydrologic Unit Number 18090205. Western Mojave Desert and Antelope Valley: Los Angeles County (part)Unclassifiable/Attainment That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. Trona: San Bernardino County (part)Unclassifiable/Attainment That portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205. Coachella Valley: Riverside County (part)Unclassifiable/Attainment That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East;, to the Riverside-San Bernardino County line: And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, elevation 4504'; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834'; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814'; then northwest along the ridge line to the Riverside-San Bernardino County line. Far Eastern Riverside and San Bernardino Counties: San Bernardino County (remainder)Unclassifiable/Attainment Riverside County (remainder)Unclassifiable/Attainment. Imperial County: Imperial CountyUnclassifiable/Attainment.

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 July 2, 2014, unless otherwise noted.

California—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1Designation Classification Date 2Type Date 2Type Los Angeles-South Coast Air Basin, CA: Los Angeles County (part)Nonattainment12/9/20Serious. That portion of Los Angeles County which lies south and west of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Orange CountyNonattainment12/9/20Serious. Riverside County (part): That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line (excluding the lands of the Santa Rosa Band of Cahuilla Mission Indians, and excluding the lands of the Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation)Nonattainment12/9/20Serious. San Bernardino County (part)Nonattainment12/9/20Serious. That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary Imperial County, CA: Imperial County (part)NonattainmentModerate. That portion of Imperial County which lies within the line described as follows: (San Bernardino Base and Meridian) Beginning at the intersection of the United States-Mexico border and the southeast corner of Township 17 South, Range 11 East, then north along the range line of the eastern edge of Range 11 East, then east along the township line of the southern edge of Township 12 South to the northeast corner of Township 13 South, Range 15 East, then south along the range line common to Range 15 East and Range 16 East, to the United States-Mexico border San Joaquin Valley, CA: Fresno CountyNonattainmentModerate. Kern County (part)NonattainmentModerate. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon Land Grant boundary line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary Kings CountyNonattainmentModerate. Madera CountyNonattainmentModerate. Merced CountyNonattainmentModerate. San Joaquin CountyNonattainmentModerate. Stanislaus CountyNonattainmentModerate. Tulare CountyNonattainmentModerate. Plumas County, CA Plumas County (part)NonattainmentJanuary 30, 2023Serious. That portion of Plumas County within the following Super Planning Watersheds (SPWS), as defined by the State of California's Department of Conservation Statewide Watershed Program: Humbug Valley (#55183301), Sulpher Creek (#55183302), Frazier Creek (#55183303), and Eureka Lake (#55183304) San Diego Air Basin, CA: San Diego County (excluding the lands of the Pechanga Band of Luiseño Mission Indians of the Pechanga Reservation)Unclassifiable/Attainment North Coast Air Basin: Del Norte CountyUnclassifiable/Attainment Humboldt CountyUnclassifiable/Attainment Mendocino CountyUnclassifiable/Attainment Sonoma County (part)Unclassifiable/Attainment That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeast corner of the Rancho Estero Americano Land Grant on the boundary line between Marin and Sonoma Counties; then running north along the east boundary line of Rancho Estero Americano Land Grant to the northeast corner thereof, being an angle corner in the westerly boundary line of the Rancho Canada de Jonive Land Grant, then running along the boundary of the Rancho Canada de Jonive Land Grant west, north and east to its intersection with the eastern line of Graton Road; then running along the east and south line of Graton Road north and east to its intersection with the east line of Sullivan Road; then running north along the east line of Sullivan Road to the southern line of Green Valley Road; then running east along the southern line of Green Valley Road and east along the southern line of State Highway 116, to the west and north line of Vine Hill Road; then running along the west and north line of Vine Hill Road, north and east to its intersection with the west line of Laguna Road; then running north along the west line of Laguna Road and the north projection thereof to the north line of Trenton Road; then running west along the north line of Trenton Road to the east line of Trenton-Healdsburg Road to the east line of Eastside Road; then running north along the east line of Eastside Road to its intersection with the southern line of Rancho Sotoyome Land Grant; then running east along the southern line of Rancho Sotoyome Land Grant to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Base and Meridian; then running east along the township line to its intersection with the boundary line between Sonoma and Napa Counties Trinity CountyUnclassifiable/Attainment Northeast Plateau Air Basin, CA: Lassen CountyUnclassifiable/Attainment Modoc CountyUnclassifiable/Attainment Siskiyou CountyUnclassifiable/Attainment Lake County Air Basin, CA: Lake CountyUnclassifiable/Attainment Sacramento Valley Air Basin, CA: Butte CountyUnclassifiable/Attainment Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Placer County (part)Unclassifiable/Attainment That portion of Placer County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Placer-El Dorado County line and the township line common to Township 12 North, Range 9 East and Township 13 North, Range 9 East, then running west along the township line common to Township 12 North, Range 9 East and Township 13 North, Range 9 East, then north along the range line common to Range 8 East and Range 9 East, to the Placer-Nevada County boundary Sacramento CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, Township 6 North, Range 2 West, Mount Diablo Base and Meridian, then east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, then south 1/2 mile and east 2 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, then east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, then south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, then east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, then east to the boundary between Solano and Sacramento Counties Sutter CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment Yolo CountyUnclassifiable/Attainment Yuba CountyUnclassifiable/Attainment Mountain Counties: Amador CountyUnclassifiable/Attainment Calaveras CountyUnclassifiable/Attainment El Dorado (part)Unclassifiable/Attainment All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake Mariposa CountyUnclassifiable/Attainment Nevada CountyUnclassifiable/Attainment Placer (part)Unclassifiable/Attainment That portion of Placer County which is contained inside the two boundaries described as follows: 1. That portion of the county that lies east of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Placer-El Dorado County line and the township line common to Township 12 North, Range 9 East and Township 13 North, Range 9 East, then running west along the township line common to Township 12 North, Range 9 East and Township 13 North, Range 9 East, then north along the range line common to Range 8 East and Range 9 East, to the Placer-Nevada County boundary. 2. That portion of the county that lies west of the drainage area naturally tributary to Lake Tahoe including said Lake, plus west of the boundary of that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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 Plumas County (remainder)Unclassifiable/Attainment Sierra CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment Lake Tahoe Air Basin: El Dorado County (part)Unclassifiable/Attainment That portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake Placer County (part)Unclassifiable/Attainment That portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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 Township 15 North and Township 16 North, Mount Diablo Base and Meridian, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, then south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, to the intersection with the said drainage area crestline, then following the said drainage area boundary in a southeasterly, then northeasterly direction to and along the Lake Tahoe Dam, then following the said drainage area crestline in a northeasterly, then northwesterly direction to the point of beginning San Francisco Bay Area Air Basin: Alameda CountyUnclassifiable/Attainment Contra Costa CountyUnclassifiable/Attainment Marin CountyUnclassifiable/Attainment Napa CountyUnclassifiable/Attainment San Francisco CountyUnclassifiable/Attainment San Mateo CountyUnclassifiable/Attainment Santa Clara CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, Township 6 North, Range 2 West, Mount Diablo Base and Meridian, then east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, then south 1/2 mile and east 2 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, then east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, then south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, then east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, then east to the boundary between Solano and Sacramento Counties Sonoma County (part)Unclassifiable/Attainment That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeast corner of the Rancho Estero Americano Land Grant on the boundary line between Marin and Sonoma Counties; then running north along the east boundary line of Rancho Estero Americano Land Grant to the northeast corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive Land Grant, then running along the boundary of Rancho Canada de Jonive Land Grant west, north and east to its intersection with the eastern line of Graton Road; then running along the east and south line of Graton Road north and east to its intersection with the east line of Sullivan Road; then running north along the east line of Sullivan Road to the southern line of Green Valley Road; then running east along the southern line of Green Valley Road and east along the southern line of State Highway 116, to the west and north line of Vine Hill Road; then running along the west and north line of Vine Hill Road, north and east to its intersection with the west line of Laguna Road; then running north along the west line of Laguna Road and the north projection thereof to the north line of Trenton Road; then running west along the north line of Trenton Road to the east line of Trenton-Healdsburg Road to the east line of Eastside Road; then running north along the east line of Eastside Road to its intersection with the southern line of Rancho Sotoyome Land Grant; then running east along the southern line of Rancho Sotoyome Land Grant to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Base and Meridian; then running east along the township line to its intersection with the boundary line between Sonoma and Napa Counties North Central Coast Air Basin: Monterey CountyUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment South Central Coast Air Basin: San Luis Obispo CountyUnclassifiable/Attainment Santa Barbara CountyUnclassifiable/Attainment Ventura CountyUnclassifiable/Attainment Great Basin Valleys Air Basin: Alpine CountyUnclassifiable/Attainment Inyo CountyUnclassifiable/Attainment Mono CountyUnclassifiable/Attainment Mojave Desert Air Basin: Kern County (part)Unclassifiable/Attainment That portion of Kern County east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon Land Grant boundary line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary Los Angeles County (remainder)Unclassifiable/Attainment Riverside County (part)Unclassifiable/Attainment That portion of Riverside County which lies to the east of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, Elevation 45′05″; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line San Bernardino County (remainder)Unclassifiable/Attainment Salton Sea Air Basin: Imperial County (remainder)Unclassifiable/Attainment Riverside County (part)Unclassifiable/Attainment That portion of Riverside County (including the lands of the Santa Rosa Band of Cahuilla Mission Indians within Riverside County) which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East;, to the Riverside-San Bernardino County line: And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, elevation 4504′; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line Pechanga Band of Luiseño Mission IndiansUnclassifiable/Attainment

1 Includes areas of Indian country located in each county or area, except as otherwise specified.

2 This date is April 15, 2015, unless otherwise noted.

California—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date 2Type Chico, CA: Butte County (part)Unclassifiable/Attainment That portion of Butte County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Butte-Yuba county line and the township line common to T18N R6E and T19N R6E, west to the township line common to T18N R6E and T19N R6E, then north along the range line common to R5E and R6E, then west along the township line common to T21N and T20N, then north along the range line common to R4E and R5E, then west along the township line common to T24N and T23N to the Butte-Tehama County boundary. Imperial County, CA: Imperial County (part)Unclassifiable/Attainment That portion of Imperial County which lies within the line described as follows: (San Bernardino Base and Meridan) Beginning at the intersection of the United States-Mexico border and the southeast corner of T17S R11E, then north along the range line of the eastern edge of range R11E, then east along the township line of the southern edge of T12S to the northeast corner of T13S R15E, then south along the range line common to R15E and R16E, to the United States-Mexico border. Los Angeles-South Coast Air Basin, CA: Los Angeles County (part)NonattainmentModerate. That portion of Los Angeles County which lies south and west of a line described as follows: 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; then North along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. Orange CountyNonattainmentModerate. Riverside County (part)NonattainmentModerate. That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County Line (excluding the lands of the Santa Rosa Band of Cahuilla Mission Indians). That part of the lands of the Santa Rosa Band of Cahuilla Mission Indians which is excluded from the Riverside County (part) nonattainment areaNonattainmentModerate. San Bernardino County (part)NonattainmentModerate. That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary. Sacramento, CA: El Dorado County (part)Unclassifiable/Attainment That portion of El Dorado County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of El Dorado-Amador county line and the township line common to townships T8N R10E and T8N R11E, then north along the range line common to ranges R10E and R11E, then east along the township line common to T9N and T8N, then north along the range line common to ranges R12E and R13E, then west along the township line common to T12N and T11N, then north along the range line common to ranges R10E and R11E, then west along the township line common to T13N and T12N, then north along the range line common to ranges R9E and R10E, to the El Dorado-Placer County boundary. Placer County (part)Unclassifiable/Attainment That portion of Placer County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Placer-El Dorado County line and the township line common to townships T12N R9E and T13N R9E, then running west along the township line common to townships T12N R9E and T13N R9E, then north along the range line common to ranges R8E and R9E, to the Placer-Nevada County boundary. Sacramento CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment That portion of Solano County which lies north and east of a line described as follows: beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. Yolo County (part)Unclassifiable/Attainment That portion of Yolo County which lies east of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of Yolo-Solano County boundary and the range line of the eastern edge of township T8N R2W, north along the range line of the eastern edge of township T8N R2W, continuing north along the range line common to ranges R2W and R1W, to the Yolo-Colusa County boundary. San Francisco Bay Area, CA: Alameda CountyUnclassifiable/Attainment Contra Costa CountyUnclassifiable/Attainment Marin CountyUnclassifiable/Attainment Napa CountyUnclassifiable/Attainment San Francisco CountyUnclassifiable/Attainment San Mateo CountyUnclassifiable/Attainment Santa Clara CountyUnclassifiable/Attainment Solano County (part)Unclassifiable/Attainment That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part)Unclassifiable/Attainment. That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. San Joaquin Valley, CA: Fresno CountyNonattainment5/7/15Serious. Kern County (part)Nonattainment5/7/15Serious. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Kings CountyNonattainment5/7/15Serious. Madera CountyNonattainment5/7/15Serious. Merced CountyNonattainment5/7/15Serious. San Joaquin CountyNonattainment5/7/15Serious. Stanislaus CountyNonattainment5/7/15Serious. Tulare CountyNonattainment5/7/15Serious. Yuba City-Marysville, CA: Sutter CountyUnclassifiable/Attainment Yuba County (part)Unclassifiable/Attainment That portion of Yuba County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Yuba-Nevada county line and the range line common to ranges R7E and R8E, north to the southeast corner of township T18N R7E, then west along the township line common to T17N and T18N, then north along the range line common to ranges R6E and R7E, then west along the township line common to T19N and T18N to the Yuba-Butte County boundary. North Coast Air Basin: Del Norte CountyUnclassifiable/Attainment Humboldt CountyUnclassifiable/Attainment Mendocino CountyUnclassifiable/Attainment Sonoma County (part)Unclassifiable/Attainment That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive, thence running along said boundary of Rancho Canada de Jonive westerly; northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly and northerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road: thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 north, Mt. Diablo Base and Meridian; thence running easterly along said Township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California. Trinity CountyUnclassifiable/Attainment Northeast Plateau Air Basin: Lassen CountyUnclassifiable/Attainment Modoc CountyUnclassifiable/Attainment. Siskiyou CountyUnclassifiable/Attainment Lake County Air Basin: Lake CountyUnclassifiable/Attainment Upper Sacramento Valley Region: Butte County (remainder)Unclassifiable/Attainment Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment Yuba County (remainder)Unclassifiable/Attainment Sacramento Metropolitan Region: Yolo County (remainder)Unclassifiable/Attainment Northern Mountain Counties: Nevada CountyUnclassifiable/Attainment Plumas CountyUnclassifiable/Attainment Sierra CountyUnclassifiable/Attainment Central Mountain Counties: Amador CountyUnclassifiable/Attainment Calaveras CountyUnclassifiable/Attainment Southern Mountain Counties: Mariposa CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment Lake Tahoe Air Basin: El Dorado County (remainder)Unclassifiable/Attainment Placer County (remainder)Unclassifiable/Attainment North Central Coast Air Basin: Monterey CountyUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment San Luis Obispo County: San Luis Obispo CountyUnclassifiable/Attainment Santa Barbara County: Santa Barbara County (part)Unclassifiable/Attainment Excluding San Miguel, Santa Rosa, Santa Cruz and Santa Barbara Islands Santa Barbara County (part)Unclassifiable/Attainment San Miguel, Santa Rosa, Santa Cruz and Santa Barbara Islands Ventura County: Ventura County (part)Unclassifiable/Attainment Excluding Anacapa and San Nicolas Islands. Ventura County (part)Unclassifiable/Attainment Anacapa and San Nicolas Islands. Great Basin Valleys Air Basin: Alpine CountyUnclassifiable/Attainment Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that Lies outside Hydrologic Unit Number 18090205. Mono CountyUnclassifiable/Attainment Coso Junction: Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that lies inside Hydrologic Unit Number 18090205. Eastern Kern County: Kern County (part)Unclassifiable/Attainment That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; Then northwest Along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary. Indian Wells Valley: Kern County (part)Unclassifiable/Attainment That portion of Kern County that lies inside Hydrologic Unit Number 18090205. Western Mojave Desert and Antelope Valley: Los Angeles County (part)Unclassifiable/Attainment That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. San Bernardino County (part)Unclassifiable/Attainment That portion of San Bernardino County (with the exception of that portion in Hydrologic Unit Number 18090205) which lies north and east of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; And that portion of San Bernardino County which lies south and west of a line described as follows: latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west. Trona: San Bernardino County (part)Unclassifiable/Attainment That portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205. Coachella Valley: Riverside County (part)Unclassifiable/Attainment That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then North along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line: And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, Elevation 4504′; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line. Far Eastern Riverside and San Bernardino Counties: San Bernardino County (remainder)Unclassifiable/Attainment. Riverside County (remainder)Unclassifiable/Attainment. Imperial County (remainder)Unclassifiable/Attainment San Diego CountyUnclassifiable/Attainment

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 July 2, 2014, unless otherwise noted.

California—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date 2Type Chico, CA: Butte County (part)August 10, 2018Attainment That portion of Butte County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Butte-Yuba county line and the township line common to T18N R6E and T19N R6E, west to the township line common to T18N R6E and T19N R6E, then north along the range line common to R5E and R6E, then west along the township line common to T21N and T20N, then north along the range line common to R4E and R5E, then west along the township line common to T24N and T23N to the Butte-Tehama County boundary Imperial County, CA: Imperial County (part)NonattainmentModerate. That portion of Imperial County which lies within the line described as follows: (San Bernardino Base and Meridian) Beginning at the intersection of the United States-Mexico border and the southeast corner of T17S R11E, then north along the range line of the eastern edge of range R11E, then east along the township line of the southern edge of T12S to the northeast corner of T13S R15E, then south along the range line common to R15E and R16E, to the United States-Mexico border. Los Angeles-South Coast Air Basin, CA: Los Angeles County (part)Nonattainment02/12/16Serious. That portion of Los Angeles County which lies south and west of a line described as follows: 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; then North along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundaryNonattainment02/12/16Serious. Orange CountyNonattainment02/12/16Serious. Riverside County (part)Nonattainment02/12/16Serious. That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County Line (excluding the lands of the Santa Rosa Band of Cahuilla Mission Indians)Nonattainment02/12/16Serious. That part of the lands of the Santa Rosa Band of Cahuilla Mission Indians which is excluded from the Riverside County (part) nonattainment areaUnclassifiable/AttainmentSan Bernardino County (part)Nonattainment02/12/16Serious. That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundaryNonattainment02/12/16Serious. Sacramento, CA: El Dorado County (part)NonattainmentModerate. That portion of El Dorado County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of El Dorado-Amador county line and the township line common to townships T8N R10E and T8N R11E, then north along the range line common to ranges R10E and R11E, then east along the township line common to T9N and T8N, then north along the range line common to ranges R12E and R13E, then west along the township line common to T12N and T11N, then north along the range line common to ranges R10E and R11E, then west along the township line common to T13N and T12N, then north along the range line common to ranges R9E and R10E, to the El Dorado-Placer County boundary. Placer County (part)NonattainmentModerate. That portion of Placer County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Placer-El Dorado County line and the township line common to townships T12N R9E and T13N R9E, then running west along the township line common to townships T12N R9E and T13N R9E, then north along the range line common to ranges R8E and R9E, to the Placer-Nevada County boundary. Sacramento CountyNonattainmentModerate. Solano County (part)NonattainmentModerate. That portion of Solano County which lies north and east of a line described as follows: beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. Yolo County (part)NonattainmentModerate. That portion of Yolo County which lies east of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of Yolo-Solano County boundary and the range line of the eastern edge of township T8N R2W, north along the range line of the eastern edge of township T8N R2W, continuing north along the range line common to ranges R2W and R1W, to the Yolo-Colusa County boundary. San Francisco Bay Area, CA: Alameda CountyNonattainmentModerate. Contra Costa CountyNonattainmentModerate. Marin CountyNonattainmentModerate. Napa CountyNonattainmentModerate. San Francisco CountyNonattainmentModerate. San Mateo CountyNonattainmentModerate. Santa Clara CountyNonattainmentModerate. Solano County (part)NonattainmentModerate. That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part)NonattainmentModerate. That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. San Joaquin Valley, CA: Fresno CountyNonattainment2/19/16Serious. Kern County (part)Nonattainment2/19/16Serious. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary Kings CountyNonattainment2/19/16Serious. Madera CountyNonattainment2/19/16Serious. Merced CountyNonattainment2/19/16Serious. San Joaquin CountyNonattainment2/19/16Serious. Stanislaus CountyNonattainment2/19/16Serious. Tulare CountyNonattainment2/19/16Serious. Yuba City-Marysville, CA Sutter County1/8/15Attainment Yuba County (part)1/8/15Attainment That portion of Yuba County which lies west of the line described as follows: (Mount Diablo Base and Meridian) Beginning at the intersection of the Yuba-Nevada county line and the range line common to ranges R7E and R8E, north to the southeast corner of township T18N R7E, then west along the township line common to T17N and T18N, then north along the range line common to ranges R6E and R7E, then west along the township line common to T19N and T18N to the Yuba-Butte County boundary. Rest of State: North Coast Air Basin: Del Norte CountyUnclassifiable/Attainment Humboldt CountyUnclassifiable/Attainment Mendocino CountyUnclassifiable/Attainment Sonoma County (part)Unclassifiable/Attainment That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive, thence running along said boundary of Rancho Canada de Jonive westerly; northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly and northerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road: thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 north, Mt. Diablo Base and Meridian; thence running easterly along said Township line to its intersection with the boundary line between Sonoma and Napa Counties, State of California. Trinity CountyUnclassifiable/Attainment Northeast Plateau Air Basin: Lassen CountyUnclassifiable/Attainment Modoc CountyUnclassifiable/Attainment Siskiyou CountyUnclassifiable/Attainment Lake County Air Basin: Lake CountyUnclassifiable/Attainment Upper Sacramento Valley Region: Butte County (remainder)Unclassifiable/Attainment Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment Yuba County (remainder)Unclassifiable/Attainment Sacramento Metropolitan Region: Yolo County (remainder)Unclassifiable/Attainment Northern Mountain Counties: Nevada CountyUnclassifiable/Attainment Plumas CountyUnclassifiable/Attainment Sierra CountyUnclassifiable/Attainment Central Mountain Counties: Amador CountyUnclassifiable/Attainment Calaveras CountyUnclassifiable/Attainment Southern Mountain Counties: Mariposa CountyUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment Lake Tahoe Air Basin: El Dorado County (remainder)Unclassifiable/Attainment Placer County (remainder)Unclassifiable/Attainment North Central Coast Air Basin: Monterey CountyUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment San Luis Obispo County: San Luis Obispo CountyUnclassifiable/Attainment Santa Barbara County: Santa Barbara County (part)Unclassifiable/Attainment Excluding San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands Santa Barbara County (part)Unclassifiable/Attainment San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands Ventura County: Ventura County (part)Unclassifiable/Attainment Excluding Anacapa and San Nicolas Islands. Ventura County (part)Unclassifiable/Attainment Anacapa and San Nicolas Islands. Great Basin Valleys Air Basin: Alpine CountyUnclassifiable/Attainment Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that Lies outside Hydrologic Unit Number 18090205. Mono CountyUnclassifiable/Attainment Coso Junction: Inyo County (part)Unclassifiable/Attainment That portion of Inyo County that lies inside Hydrologic Unit Number 18090205. Eastern Kern County: Kern County (part)Unclassifiable/Attainment That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; Then northwest Along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary. Indian Wells Valley: Kern County (part)Unclassifiable/Attainment That portion of Kern County that lies inside Hydrologic Unit Number 18090205. Western Mojave Desert and Antelope Valley: Los Angeles County (part)Unclassifiable/Attainment That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. San Bernardino County (part)Unclassifiable/Attainment That portion of San Bernardino County (with the exception of that portion in Hydrologic Unit Number 18090205) which lies north and east of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; And that portion of San Bernardino County which lies south and west of a line described as follows: latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west. Trona: San Bernardino County (part)Unclassifiable/Attainment That portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205. Coachella Valley: Riverside County (part)Unclassifiable/Attainment That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then North along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line: And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, Elevation 45'05'′; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line. Far Eastern Riverside and San Bernardino Counties: San Bernardino County (remainder)Unclassifiable/Attainment Riverside County (remainder)Unclassifiable/Attainment Imperial County (remainder)Unclassifiable Attainment San Diego CountyUnclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

2 This date is July 2, 2014, unless otherwise noted.

California—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards North Coast Air BasinX San Francisco Area Air BasinX Lake County Air BasinX North Central Coast Air Basin: Monterey portionX San Benito portionX Santa Cruz portionX South Central Coast Air Basin: San Luis Obispo CountX Santa Barbara AQMAX Santa Barbara non-AQMAX Ventura CountyX Channel IslandsX San Diego Air Basin: West San Diego CountyX East San Diego CountyX South Coast Air BasinX San Joaquin Valley Air Basin: Fresno CountyX Kern County (SJVAS portion)X Kings CountyX Madera CountyX Merced CountyX San Joaquin CountyX Stanislaus CountyX Tulare CountyX Sacramento Valley Air Basin: Sacramento CountyX Solano County (Sacramento Valley Air Basin portion)X Yolo CountyX Butte CountyX Colusa CountyX Glenn CountyX Shasta County (Sacramento Valley portion)X Sutter CountyX Tehama CountyX Yuba CountyX Great Basin Valleys Air BasinX Northeast Plateau Air BasinX Mountain Counties Air Basin: AQMA portion of Placer Co. CountyX Placer County excluding AQMA portion and Lake Tahoe portionX Anador CountyX Calaveras CountyX El Dorado County, excluding Lake Tahoe Air Basin portionX Mariposa CountyX Nevada CountyX Plumas CountyX Sierra CountyX Tuolumne CountyX Southeast Desert Air Basin County: Kern County (S.E. Desert portion) CountyX Imperial CountyX Los Angeles County (portion within S.E. Desert Air Basin)X Riverside County (portion not within South Coast Air Basin or Coachella Valley planning area)X San Bernardino County (portion within S.E. Desert AQMA)X Riverside County (Coachella Valley planning area)X San Bernardino, non-AQMAX Tahoe Air BasinX

California—NO2 (2010 1-Hour Standard)

Designated area Designation aDate 1Type Amador County APCD: Amador CountyUnclassifiable/Attainment. Antelope Valley AQMD: Los Angeles County (part)Unclassifiable/Attainment. That portion of Los Angeles County which lies north and east of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T. 3 N and T. 2 N, San Bernardino Base and Meridian; then north along the range line common to R. 8 W and R. 9 W; then west along the township line common to T. 4 N and T. 3 N; then north along the range Line Common to R. 12 W and R. 13 W to the southeast corner of Section 12, T. 5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T. 5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T. 7 N and T. 6 N (point is at the northwest corner of Section 4 in T. 6 N, R. 14 W); then west along the township line common to T. 7 N and T. 6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T. 7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T. 7 N, R. 16 W; then north along the range line common to R. 16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T. 8 N and T. 7 N) then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Bay Area AQMD: Alameda CountyUnclassifiable/Attainment. Contra Costa CountyUnclassifiable/Attainment. Marin CountyUnclassifiable/Attainment. Napa CountyUnclassifiable/Attainment. San Francisco CountyUnclassifiable/Attainment. San Mateo CountyUnclassifiable/Attainment. Santa Clara CountyUnclassifiable/Attainment. Solano County (part)Unclassifiable/Attainment. That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T. 6 N, R. 2.W, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, T. 6 N, R. 2 W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N, R. 1 W, thence east along a line common to T. 5 N and T. 6 N to the northeast corner of Section 3, T. 5 N, R. 1 E, thence south along section lines to the southeast corner of Section 10, T. 3 N, R. 1 E, thence east along section lines to the south 1/4 corner of Section 8, T. 3 N, R. 2 E, thence east to the boundary between Solano and Sacramento Counties Sonoma County (part)Unclassifiable/Attainment. That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Meridian; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties Butte County AQMD: Butte CountyUnclassifiable/Attainment. Calaveras County AQMD: Calaveras CountyUnclassifiable/Attainment. Colusa County AQMD: Colusa CountyUnclassifiable/Attainment. Eastern Kern APCD: Kern County (part)Unclassifiable/Attainment. That portion of Kern County east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W and R. 17 W, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, T. 11 N, R. 17 W; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, T. 32 S, R. 30 E, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, T. 31 S, R. 30 E; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, T. 31 S, R. 31 E; then east to the southeast corner of Section 13, T. 31 S, R. 31 E; then north along the range line common to R. 31 E and R. 32 E, Mount Diablo Base and Meridian, to the northwest corner of Section 6, T. 29 S, R. 32 E; then east to the southwest corner of Section 31 T. 28 S, R. 32 E; then north along the range line common to R. 31 E and R. 32 E to the northwest corner of Section 6, T. 28 S, R. 32 E, then west to the southeast corner of Section 36, T. 27 S, R. 31 E, then north along the range line common to R. 31 E and R. 32 E to the Kern-Tulare County boundary El Dorado County AQMD: El Dorado CountyUnclassifiable/Attainment. Feather River AQMD: Sutter CountyUnclassifiable/Attainment. Yuba CountyUnclassifiable/Attainment. Glenn County APCD: Glenn CountyUnclassifiable/Attainment. Great Basin Unified APCD: Alpine CountyUnclassifiable/Attainment. Inyo CountyUnclassifiable/Attainment. Mono CountyUnclassifiable/Attainment. Imperial County APCD: Imperial CountyUnclassifiable/Attainment. Lake County AQMD: Lake CountyUnclassifiable/Attainment. Lassen County APCD: Lassen CountyUnclassifiable/Attainment. Mariposa County APCD: Mariposa CountyUnclassifiable/Attainment. Mendocino County AQMD: Mendocino CountyUnclassifiable/Attainment. Modoc County APCD: Modoc CountyUnclassifiable/Attainment. Mojave Desert AQMD: Riverside County (part)Unclassifiable/Attainment. That portion of Riverside County which lies east of a line described as follows: Beginning at the southwest corner of Section 32, T. 8 S, R. 20 E, San Bernardino Base and Meridian, on the Riverside-Imperial County Boundary; then northerly along section lines to the northwest corner of Section 5, T. 7 S, R. 20 E; then westerly along the township line to the southwest corner of Section 31, T. 6 S, R. 19 E; then northerly along the range line to the northwest corner of Section 6, T. 5 S, R. 19 E; then easterly along the township line to the southwest corner of Section 33, T. 4 S, R. 19 E; then northerly along section lines to the northwest corner of Section 4, T. 4 S, R. 19 E; then westerly along the township lines to the southwest corner of Section 32, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 17, T. 3 S, R. 19 E; then westerly along the township line to the southwest corner of Section 7, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 30, T. 2 S, R. 19 E; then westerly along the southerly line of Section 24, T. 2 S, R. 18 E, to the southwest corner thereof; then northerly along section lines to the northwest corner of Section 13, T. 2 S, R. 18 E; then westerly along section lines to the southwest corner of Section 10, T. 2 S, R. 18 E; then northerly along section lines to the Riverside-San Bernardino County boundary San Bernardino County (part)Unclassifiable/Attainment. That portion of San Bernardino County east and north of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E, San Bernardino Base and Meridian; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary Monterey Bay Unified APCD: Monterey CountyUnclassifiable/Attainment. San Benito CountyUnclassifiable/Attainment. Santa Cruz CountyUnclassifiable/Attainment. North Coast Unified AQMD: Del Norte CountyUnclassifiable/Attainment. Humboldt CountUnclassifiable/Attainment. Trinity CountyUnclassifiable/Attainment. Northern Sierra AQMD: Nevada CountyUnclassifiable/Attainment. Plumas CountyUnclassifiable/Attainment. Sierra CountyUnclassifiable/Attainment. Northern Sonoma County APCD: Sonoma County (part)Unclassifiable/Attainment. That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Meridian; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. Placer County APCD: Placer CountyUnclassifiable/Attainment. Sacramento Metropolitan AQMD: Sacramento CountyUnclassifiable/Attainment. San Diego County APCD: San Diego CountyUnclassifiable/Attainment. San Joaquin Valley Unified APCD: Fresno CountyUnclassifiable/Attainment. Kern County (part)Unclassifiable/Attainment. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W and R. 17 W, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, T. 11 N, R. 17 W; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, T. 32 S, R. 30 E, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, T. 31 S, R. 30 E; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, T. 31 S, R. 31 E; then east to the southeast corner of Section 13, T. 31 S, R. 31 E; then north along the range line common to R. 31 E and R. 32 E, Mount Diablo Base and Meridian, to the northwest corner of Section 6, T. 29 S, R. 32 E; then east to the southwest corner of Section 31, T. 28 S, R. 32 E; then north along the range line common to R. 31 E and R. 32 E to the northwest corner of Section 6, T. 28 S, R. 32 E, then west to the southeast corner of Section 36, T. 27 S, R. 31 E, then north along the range line common to R. 31 E and R. 32 E to the Kern-Tulare County boundary. Kings CountyUnclassifiable/Attainment. Madera CountyUnclassifiable/Attainment. Merced CountyUnclassifiable/Attainment. San Joaquin CountyUnclassifiable/Attainment. Stanislaus CountyUnclassifiable/Attainment. Tulare CountyUnclassifiable/Attainment. San Luis Obispo County APCD: San Luis Obispo CountyUnclassifiable/Attainment. Santa Barbara County APCD: Santa Barbara CountyUnclassifiable/Attainment. Shasta County AQMD: Shasta CountyUnclassifiable/Attainment. Siskiyou County APCD: Siskiyou CountyUnclassifiable/Attainment. South Coast AQMD: Los Angeles County (part)Unclassifiable/Attainment. That portion of Los Angeles County which lies south and west of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T.3 N and T.2 N, San Bernardino Base and Meridian; then north along the range line common to R.8 W and R.9 W; then west along the township line common to T.4 N and T.3 N; then north along the range line common to R.12 W and R.13 W to the southeast corner of Section 12, T.5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T.5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T.7 N and T. 6 N (point is at the northwest corner of Section 4 in T.6 N, R. 14 W); then west along the township line common to T.7 N and T.6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T.7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T.7 N, R. 16 W; then north along the range line common to R.16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T.8 N and T.7 N); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. Orange CountyUnclassifiable/Attainment. Riverside County (part)Unclassifiable/Attainment. That portion of Riverside County which lies west of a line described as follows: Beginning at the southwest corner of Section 32, T. 8 S, R. 20 E, San Bernardino Base and Meridian, on the Riverside-Imperial County Boundary; then northerly along section lines to the northwest corner of Section 5, T. 7 S, R. 20 E; then westerly along the township line to the southwest corner of Section 31, T. 6 S, R. 19 E; then northerly along the range line to the northwest corner of Section 6, T. 5 S, R. 19 E; then easterly along the township line to the southwest corner of Section 33, T. 4 S, R. 19 E; then northerly along section lines to the northwest corner of Section 4, T. 4 S, R. 19 E; then westerly along the township lines to the southwest corner of Section 32, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 17, T. 3 S, R. 19 E; then westerly along the township line to the southwest corner of Section 7, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 30, T. 2 S, R. 19 E; then westerly along the southerly line of Section 24, T. 2 S, R. 18 E, to the southwest corner thereof; then northerly along section lines to the northwest corner of Section 13, T. 2 S, R. 18 E; then westerly along section lines to the southwest corner of Section 10, T. 2 S, R. 18 E; then northerly along section lines to the Riverside-San Bernardino County boundary. San Bernardino County (part)Unclassifiable/Attainment. That portion of San Bernardino County west and south of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary. Tehama County APCD: Tehama CountyUnclassifiable/Attainment. Tuolumne County APCD: Tuolumne CountyUnclassifiable/Attainment. Ventura County APCD: Ventura CountyUnclassifiable/Attainment. Yolo-Solano AQMD: Solano CountyUnclassifiable/Attainment. That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T. 6 N, R. 2 W, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, T. 6 N, R. 2 W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N, R. 1 W, thence east along a line common to T. 5 N and T. 6 N to the northeast corner of Section 3, T. 5 N, R. 1 E, thence south along section lines to the southeast corner of Section 10, T. 3 N, R. 1 E, thence east along section lines to the south 1/4 corner of Section 8, T. 3 N, R. 2 E, thence east to the boundary between Solano and Sacramento Counties. Yolo CountyUnclassifiable/Attainment.

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.

California—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation aCategory/classification Date 1Type Date 1Type Amador and Calaveras Cos., CA: (Central Mountain Cos.) Amador CountyNonattainment6/13/12Subpart 2/Moderate. Calaveras CountyNonattainment6/13/12Subpart 2/Moderate. Chico, CA: Butte CountyNonattainment6/13/12Subpart 2/Marginal. Kern County (Eastern Kern), CA Kern County (part)Nonattainment6/13/12Subpart 2/Moderate. That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundaryImperial County, CA: Imperial CountyNonattainment3/14/08Subpart 2/Moderate. Los Angeles—South Coast Air Basin, CA: d fNonattainment( 2)Subpart 2/Extreme. Los Angeles County (part)Nonattainment( 2)Subpart 2/Extreme. That portion of Los Angeles County which lies south and west of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Orange CountyNonattainment( 2)Subpart 2/Extreme. Riverside County (part)Nonattainment( 2)Subpart 2/Extreme. That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line San Bernardino County (part)Nonattainment( 2)Subpart 2/Extreme. That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary Pechanga Reservation cApril 3, 2015Attainment. Morongo Band of Mission Indians eNonattainmentSubpart 2/Severe-17. Los Angeles and San Bernardino Counties (Western Mojave Desert), CANonattainment6/7/2012Subpart 2/Severe-15. Los Angeles County (part)Nonattainment6/7/2012Subpart 2/Severe-15. That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary San Bernardino County (part)Nonattainment6/7/2012Subpart 2/Severe-15. That portion of San Bernardino County which lies north and east of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; And that portion of San Bernardino County which lies south and west of a line described as follows: latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west. Mariposa and Tuolumne Cos., CA:
(Southern Mountain Counties) 		Mariposa CountyNonattainment6/13/12Subpart 2/Moderate. Tuolumne CountyNonattainment6/13/12Subpart 2/Moderate. Riverside Co. (Coachella Valley), CA: Riverside County (part) gNonattainment6/12/19Subpart 2/Extreme. That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of Hydrologic Unit Number 18100100 within Riverside County, further described as follows: Beginning at the Riverside-Imperial County boundary and running north along the range line common to Range 17 East and Range 16 East, San Bernardino Base and Meridian; then northwest along the ridge line of the Chuckwalla Mountains, through Township 8 South, Range 16 East and Township 7 South, Range 16 East, until the Black Butte Mountain, elevation 4504′; then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East; then north along the range line common to Range 14 East and Range 13 East; then west and northwest along the ridge line to Monument Mountain, elevation 4834′; then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elev. 5814′; then northwest along the ridge line to the Riverside-San Bernardino County line. Agua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation eNonattainment( 2)Subpart 2/Severe-15. Augustine Band of Cahuilla Indians eNonattainment( 2)Subpart 2/Severe-15. Cabazon Band of Mission Indians eNonattainment( 2)Subpart 2/Severe-15. Santa Rosa Band of Cahuilla Indians eNonattainment( 2)Subpart 2/Severe-15. Torres Martinez Desert Cahuilla Indians eNonattainment( 2)Subpart 2/Severe-15. Twenty-Nine Palms Band of Mission Indians of California eNonattainment( 2)Subpart 2/Severe-15. Sacramento Metro, CANonattainment( 2)Subpart 2/Severe-15. El Dorado County (part)Nonattainment( 2)Subpart 2/Severe-15. All portions of the county, except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. Placer County (part)Nonattainment( 2)Subpart 2/Severe-15. All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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. Sacramento CountyNonattainment( 2)Subpart 2/Severe-15. Solano County (part)Nonattainment( 2)Subpart 2/Severe-15. That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. Sutter County (part)Nonattainment( 2)Subpart 2/Severe-15. Portion south of a line connecting the northern border of Yolo County to the SW tip of Yuba County and continuing along the southern Yuba County border to Placer County Yolo CountyNonattainment( 2)Subpart 2/Severe-15. San Diego, CA San Diego County (part) fThat portion of San Diego County that excludes the areas listed below: La Posta Areas #1 and #2, b Cuyapaipe Area, b Manzanita Area, b Campo Areas #1 and #2 bJuly 5, 2013Attainment. La Posta Areas #1 and #2 bUnclassifiable/Attainment. Cuyapaipe Area bUnclassifiable/Attainment. Manzanita Area bUnclassifiable/Attainment. Campo Areas #1 and #2 bUnclassifiable/Attainment. San Francisco Bay Area, CANonattainmentSubpart 2/Marginal. Alameda CountyNonattainmentSubpart 2/Marginal. Contra Costa CountyNonattainmentSubpart 2/Marginal. Marin CountyNonattainmentSubpart 2/Marginal. Napa CountyNonattainmentSubpart 2/Marginal. San Francisco CountyNonattainmentSubpart 2/Marginal. San Mateo CountyNonattainmentSubpart 2/Marginal. Santa Clara CountyNonattainmentSubpart 2/Marginal. Solano County (part)NonattainmentSubpart 2/Marginal. Portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part)NonattainmentSubpart 2/Marginal. That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. San Joaquin Valley, CANonattainment( 2)Subpart 2/Extreme. Fresno CountyNonattainment( 2)Subpart 2/Extreme. Kern County (part)Nonattainment( 2)Subpart 2/Extreme. That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary. Kings CountyNonattainment( 2)Subpart 2/Extreme. Madera CountyNonattainment( 2)Subpart 2/Extreme. Merced CountyNonattainment( 2)Subpart 2/Extreme. San Joaquin CountyNonattainment( 2)Subpart 2/Extreme. Stanislaus CountyNonattainment( 2)Subpart 2/Extreme. Tulare CountyNonattainment( 2)Subpart 2/Extreme. Sutter County (part), CA: Sutter County (part) (Sutter Buttes) That portion of the Sutter Buttes mountain range at or above 2,000 feet in elevationNonattainment6/13/12Subpart 2/Marginal. Remainder of CountyUnclassifiable/Attainment Ventura County, CA: Ventura County (part)—That part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands.Nonattainment6/19/08Subpart 2/Serious. Remainder of CountyUnclassifiable/Attainment Nevada County (Western part), CA
Nevada County (part) 		That portion of Nevada County, which lies west of a line, described as follows: beginning at the Nevada-Placer County boundary and running north along the western boundaries of Sections 24, 13, 12, 1, Township 17 North, Range 14 East, Mount Diablo Base and Meridian, and Sections 36, 25, 24, 13, 12, Township 18 North, Range 14 East to the Nevada-Sierra County boundaryNonattainment6/13/12Subpart 2/Moderate. Santa Barbara-Santa Maria-Lompoc, CA: Santa Barbara CountyUnclassifiable/Attainment Mohave Desert Air Basin: Riverside County (part) remainderUnclassifiable/Attainment San Bernardino County (part) remainderUnclassifiable/Attainment Great Basin Valleys Air BasinUnclassifiable/Attainment Alpine County Inyo County Mono County Lake County Air BasinUnclassifiable/Attainment Lake County Lake Tahoe Air BasinUnclassifiable/Attainment El Dorado County (part) Lake Tahoe Area: As described under 40 CFR 81.275. Placer County (part) Lake Tahoe Area: As described under 40 CFR 81.275. Monterey Bay AreaUnclassifiable/Attainment Monterey County San Benito County Santa Cruz County Mountain Counties Air Basin (remainder of): Nevada County (part) remainderUnclassifiable/Attainment Plumas CountyUnclassifiable/Attainment Sierra CountyUnclassifiable/Attainment North Coast Air BasinUnclassifiable/Attainment Del Norte County Humboldt County Mendocino County Sonoma County (part) remainder Trinity County Northeast Plateau Air BasinUnclassifiable/Attainment Lassen County Modoc County Siskiyou County Sacramento Valley Air Basin (remainder of): Colusa CountyUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Tehama CountyUnclassifiable/Attainment Yuba CountyUnclassifiable/Attainment South Central Coast Air Basin: (remainder of) Channel IslandsUnclassifiable/Attainment San Luis Obispo CountyUnclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

b The boundaries for these designated areas are based on coordinates of latitude and longitude derived from EPA Region 9's GIS database and are illustrated in a map entitled “Eastern San Diego County Attainment Areas for the 8-Hour Ozone NAAQS,” dated March 9, 2004, including an attached set of coordinates. The map and attached set of coordinates are available at EPA's Region 9 Air Division office. The designated areas roughly approximate the boundaries of the reservations for these tribes, but their inclusion in this table is intended for CAA planning purposes only and is not intended to be a federal determination of the exact boundaries of the reservations. Also, the specific listing of these tribes in this table does not confer, deny, or withdraw Federal recognition of any of the tribes so listed nor any of the tribes not listed.

c The use of reservation boundaries for this designation is for purposes of CAA planning only and is not intended to be a federal determination of the exact boundaries of the reservations. Nor does the specific listing of the Tribes in this table confer, deny, or withdraw Federal recognition of any of the Tribes listed or not listed.

d Excludes Morongo Band of Mission Indians' Indian country in Riverside County.

e Includes Indian country of the tribe listed in this table. 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.

f Excludes the Pechanga Reservation.

g Excludes Indian country of the Agua Caliente Band of Cahuilla Indians, the Augustine Band of Cahuilla Mission Indians, the Cabazon Band of Mission Indians, the Santa Rosa Band of Cahuilla Indians, the Torres Martinez Desert Cahuilla Indians, and the Twenty-Nine Palms Band of Mission Indians in Riverside County.

1 This date is June 15, 2004, unless otherwise noted.

2 This date is June 4, 2010.

California—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification Date 1Type Date 1Type Calaveras County, CA: 2 Calaveras CountyNonattainmentMarginal. Chico (Butte County), CA: 2NonattainmentMarginal. Butte County Berry Creek Rancheria of Maidu Indians of California 3Enterprise Rancheria of Maidu Indians of California 3Mechoopda Indian Tribe of Chico Rancheria 3Mooretown Rancheria of Maidu Indians of California 3Imperial County, CA: 2Nonattainment6/3/16Moderate. Imperial County Quechan Tribe of the Fort Yuma Indian Reservation 3Torres Martinez Desert Cahuilla Indians 3Kern County (Eastern Kern), CA: 2NonattainmentJuly 7, 2021Severe-15. Kern County (part): That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary. Los Angeles-San Bernardino Counties (West Mojave Desert), CA: 2NonattainmentSevere 15. Los Angeles County (part) That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary San Bernardino County (part) That portion of San Bernardino County which lies north and east of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; and that portion of San Bernardino County which lies south and west of a line described as follows: latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west Twenty-Nine Palms Band of Mission Indians of California 3Los Angeles-South Coast Air Basin, CA 2NonattainmentExtreme. Los Angeles County (part) That portion of Los Angeles County which lies south and west of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary Orange County Riverside County (part) That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; then west along the southern boundaries of Sections 25, 26, and 27, Township 7 South, Range 4 East, then North along the west boundaries of Sections 27, 22, 15, 10, and 3 Township 7 South, Range 4 East, then East 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. San Bernardino County (part) That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary. Cahuilla Band of Mission Indians of the Cahuilla Reservation 3Ramona Band of Cahuilla 3San Manuel Band of Mission Indians 3Soboba Band of Luiseno Indians 3Mariposa County, CA: 2 Mariposa CountyNonattainment6/3/16Moderate. Nevada County (Western part), CA: 2Nonattainment9/23/2019Serious. Nevada County (part): That portion of Nevada County, which lies west of a line, described as follows: Beginning at the Nevada-Placer County boundary and running north along the western boundaries of Sections 24, 13, 12, 1, Township 17 North, Range 14 East, Mount Diablo Base and Meridian, and Sections 36, 25, 24, 13, 12, Township 18 North, Range 14 East to the Nevada-Sierra County boundary Riverside County (Coachella Valley), CA: 2Riverside County (part)Nonattainment4/7/2023Extreme. That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of hydrologic Unit Number 18100100 within Riverside County. Agua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation 3NonattainmentSevere-15. Augustine Band of Cahuilla Indians 3NonattainmentSevere-15. Cabazon Band of Cahuilla Indians 3NonattainmentSevere-15. 8 Santa Rosa Band of Cahuilla Indians 3NonattainmentSevere-15. Torres Martinez Desert Cahuilla Indians 3NonattainmentSevere-15. Twenty-Nine Palms Band of Mission Indians of California 3NonattainmentSevere-15. Sacramento Metro, CA: 2NonattainmentSevere 15. El Dorado County (part) All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. Placer County (part) All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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. Sacramento County Solano County (part) That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. Sutter County (part) Portion south of a line connecting the northern border of Yolo County to the SW tip of Yuba County and continuing along the southern Yuba County border to Placer County. Yolo County Shingle Springs Band of Miwok Indians, Shingle Springs Rancheria (Verona Tract) 3United Auburn Indian Community of the Auburn Rancheria of California 3Yocha Dehe Wintun Nation 3San Diego County, CA NonattainmentJuly 2, 2021Severe-15. San Diego County: Barona Group of Capitan Grande Band of Mission Indians of the Barona Reservation. 3Campo Band of Diegueno Mission Indians of the Campo Indian Reservation. 3Capitan Grande Band of Diegueno Mission Indians of California. 3Ewiiaapaayp Band of Kumeyaay Indians. 3Iipay Nation of Santa Ysabel. 3Inaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation. 3Jamul Indian Village of California. 3La Jolla Band of Luiseno Indians. 3La Posta Band of Diegueno Mission Indians of the La Posta Indian Reservation. 3Los Coyotes Band of Cahuilla and Cupeno Indians. 3Manzanita Band of Diegueno Mission Indians of the Manzanita Reservation. 3Mesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation. 3Pala Band of Luiseno Mission Indians of the Pala Reservation. 3Pauma Band of Luiseno Mission Indians of the Pauma and Yuima Reservation. 3Rincon Band of Luiseno Mission Indians of the Rincon Reservation. 3San Pasqual Band of Diegueno Mission Indians of California. 3Sycuan Band of the Kumeyaay Nation. 3Viejas (Baron Long) Group of Capitan Grande Band of Mission Indians. 3San Francisco Bay Area, CA: 2NonattainmentMarginal. Alameda County Contra Costa County Marin County Napa County San Francisco County San Mateo County Santa Clara County Solano County (part) Portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part) That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence Running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. Federated Indians of Graton Rancheria 3Lytton Rancheria of California 3San Joaquin Valley, CA: 2NonattainmentExtreme. Fresno County Kern County (part) That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary. Kings County Madera County Merced County San Joaquin County Stanislaus County Tulare County Big Sandy Rancheria of Mono Indians of California 3Cold Springs Rancheria of Mono Indians of California 3Northfork Rancheria of Mono Indians of California 3Picayune Rancheria of Chukchansi Indians of California 3Santa Rosa Indian Community of the Santa Rosa Rancheria 3Table Mountain Rancheria of California 3Tule River Indian Tribe of the Tule River Reservation 3San Luis Obispo (Eastern San Luis Obispo), CA: 2Nonattainment6/3/16Marginal. 5San Luis Obispo County (part) That portion of San Luis Obispo County that lies east of a line described as follows: Beginning at the San Luis Obispo County/Santa Barbara County boundary and running north along 120 degrees 24 minutes longitude to the intersection with 35 degrees 27 minutes latitude; east along 35 degrees 27 minutes latitude to the intersection with 120 degrees 18 minutes longitude; then north along 120 degrees 18 minutes longitude to the San Luis Obispo County/Monterey County boundary Tuscan Buttes, CA: 2NonattainmentMarginal. Tehama County (part) Those portions of the immediate Tuscan Buttes area at or above 1,800 feet in elevation. Ventura County, CA: 2NonattainmentSerious. Ventura County (part) That part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands. Morongo Band of Mission Indians 3Nonattainment11/7/22Severe. Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation 3NonattainmentModerate. Rest of State: 4Alpine, Inyo, and Mono Counties:Unclassifiable/Attainment Alpine County Inyo County Mono County Amador CountyUnclassifiable/Attainment Channel Islands (Ventura County)Unclassifiable/Attainment Ventura County (part) remainder Colusa CountyUnclassifiable/Attainment Del Norte, Humboldt, and Trinity Counties):Unclassifiable/Attainment Del Norte County Humboldt County Trinity County Nevada County (part) remainderUnclassifiable/Attainment Glenn CountyUnclassifiable/Attainment Kern County (part) remainderUnclassifiable/Attainment Lake CountyUnclassifiable/Attainment Lake Tahoe (El Dorado County Portion):Unclassifiable/Attainment El Dorado County (part) remainder Lake Tahoe (Placer County Portion):Unclassifiable/Attainment Placer County (part) remainder Lassen CountyUnclassifiable/Attainment Mendocino CountyUnclassifiable/Attainment Modoc CountyUnclassifiable/Attainment Monterey CountyUnclassifiable/Attainment Northeastern San Bernardino County and Eastern Riverside CountyUnclassifiable/Attainment San Bernardino County (part) remainder Riverside County (part) remainder Sonoma County (part) remainderUnclassifiable/Attainment Sutter County and Yuba CountyUnclassifiable/Attainment Sutter County (part) remainder Yuba County Plumas and Sierra CountiesUnclassifiable/Attainment San Benito CountyUnclassifiable/Attainment Santa Barbara CountyUnclassifiable/Attainment Santa Cruz CountyUnclassifiable/Attainment Shasta CountyUnclassifiable/Attainment Siskiyou CountyUnclassifiable/Attainment Tehama County (part) remainderUnclassifiable/Attainment Tuolumne CountyUnclassifiable/Attainment San Luis Obispo County (part) remainderUnclassifiable/Attainment

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.

4 Includes any Indian country in each county or area, unless otherwise specified.

California—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date 2Type Amador County, CANonattainmentMarginal. Amador County: Buena Vista Rancheria of Me-Wuk Indians of California. Jackson Band of Miwuk Indians. Butte County, CANonattainmentMarginal. Butte County: Berry Creek Rancheria of Maidu Indians of California. Enterprise Rancheria of Maidu Indians of California. Mechoopda Indian Tribe of Chico Rancheria. Mooretown Rancheria of Maidu Indians of California. Calaveras County, CANonattainmentMarginal. Calaveras County: California Valley Miwok Tribe. Imperial County, CANonattainmentMarginal. Imperial County: Quechan Tribe of the Fort Yuma Indian Reservation. Torres Martinez Desert Cahuilla Indians. Kern County (Eastern Kern), CANonattainment11/29/21Serious. Kern County (part): That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205—the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary. Los Angeles-San Bernardino Counties (West Mojave Desert), CANonattainmentSevere-15. Los Angeles County (part): That portion of Los Angeles County which lies north and east of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. San Bernardino County (part): That portion of San Bernardino County which lies north and east of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; and that portion of San Bernardino County which lies south and west of a line described as follows: Latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west. Twenty-Nine Palms Band of Mission Indians of California. Los Angeles-South Coast Air Basin, CANonattainmentExtreme. Los Angeles County (part): That portion of Los Angeles County which lies south and west of a line described as follows: 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; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. Orange County. Riverside County (part): That portion of Riverside County which lies to the west of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; then west along the southern boundaries of Sections 25, 26, and 27, Township 7 South, Range 4 East, then North along the west boundaries of Sections 27, 22, 15, 10, and 3 Township 7 South, Range 4 East, then East 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. San Bernardino County (part): That portion of San Bernardino County which lies south and west of a line described as follows: 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; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary. Cahuilla Band of Indians. Pechanga Band of Luiseño Mission Indians of the Pechanga Reservation: Includes only non-contiguous tribal lands known as the Meadowbrook parcel. 3Ramona Band of Cahuilla. San Manuel Band of Mission Indians. Soboba Band of Luiseño Indians. Mariposa County, CANonattainment11/7/22Moderate. Mariposa County. Nevada County (Western part), CANonattainment11/29/21Serious. Nevada County (part): That portion of Nevada County, which lies west of a line, described as follows: Beginning at the Nevada-Placer County boundary and running north along the western boundaries of Sections 24, 13, 12, 1, Township 17 North, Range 14 East, Mount Diablo Base and Meridian, and Sections 36, 25, 24, 13, 12, Township 18 North, Range 14 East to the Nevada-Sierra County boundary. Riverside County (Coachella Valley), CANonattainmentSevere-15. Riverside County (part): That portion of Riverside County which lies to the east of a line described as follows: 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; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; 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; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of hydrologic Unit Number 18100100 within Riverside County. Agua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation. Augustine Band of Cahuilla Indians. Cabazon Band of Mission Indians. Santa Rosa Band of Cahuilla Indians. Torres Martinez Desert Cahuilla Indians. Twenty-Nine Palms Band of Mission Indians of California. Sacramento Metro, CANonattainment11/29/21Serious. El Dorado County (part): All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. Placer County (part): All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity 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, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, 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. Sacramento County. Solano County (part): That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. Sutter County (part): Portion south of a line connecting the northern border of Yolo County to the SW tip of Yuba County and continuing along the southern Yuba County border to Placer County. Yolo County: Shingle Springs Band of Miwok Indians, Shingle Springs Rancheria. United Auburn Indian Community of the Auburn Rancheria of California. Wilton Rancheria. Yocha Dehe Wintun Nation. San Diego County, CA 2NonattainmentJuly 2, 2021Severe-15. San Diego County: 2Barona Group of Capitan Grande Band of Mission Indians of the Barona Reservation. Campo Band of Diegueno Mission Indians of the Campo Indian Reservation. Capitan Grande Band of Diegueno Mission Indians of California. Ewiiaapaayp Band of Kumeyaay Indians. Iipay Nation of Santa Ysabel. Inaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation. Jamul Indian Village of California. La Jolla Band of Luiseno Indians. La Posta Band of Diegueno Mission Indians of the La Posta Indian Reservation. Los Coyotes Band of Cahuilla and Cupeno Indians. Manzanita Band of Diegueno Mission Indians of the Manzanita Reservation. Mesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation. Pala Band of Luiseno Mission Indians of the Pala Reservation. Pauma Band of Luiseno Mission Indians of the Pauma and Yuima Reservation. Rincon Band of Luiseno Mission Indians of the Rincon Reservation. San Pasqual Band of Diegueno Mission Indians of California. Sycuan Band of the Kumeyaay Nation. Viejas (Baron Long) Group of Capitan Grande Band of Mission Indians. San Francisco Bay Area, CANonattainmentMarginal. Alameda County. Contra Costa County. Marin County. Napa County. San Francisco County. San Mateo County. Santa Clara County. Solano County (part): Portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. Sonoma County (part): That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence Running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. Federated Indians of Graton Rancheria. Lytton Rancheria of California. San Joaquin Valley, CANonattainmentExtreme. Fresno County. Kern County (part): That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W and R. 17 W, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S 3, T. 11 N, R. 17 W; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S 34, T. 32 S, R. 30 E, Mount Diablo Base and Meridian; then north to the northwest corner of S 35, T. 31 S, R. 30 E; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S 18, T. 31 S, R. 31 E; then east to the southeast corner of S 13, T. 31 S, R. 31 E; then north along the range line common to R. 31 E and R. 32 E, Mount Diablo Base and Meridian, to the northwest corner of S 6, T. 29 S, R. 32 E; then east to the southwest corner of S 31, T. 28 S, R. 32 E; then north along the range line common to R. 31 E and R. 32 E to the northwest corner of S 6, T. 28 S, R. 32 E, then west to the southeast corner of S 36, T. 27 S, R. 31 E, then north along the range line common to R. 31 E and R. 32 E to the Kern-Tulare County boundary. Kings County. Madera County. Merced County. San Joaquin County. Stanislaus County. Tulare County: Big Sandy Rancheria of Western Mono Indians of California. Cold Springs Rancheria of Mono Indians of California. Northfork Rancheria of Mono Indians of California. Picayune Rancheria of Chukchansi Indians of California. Santa Rosa Indian Community of the Santa Rosa Rancheria. Table Mountain Rancheria of California. Tule River Indian Tribe of the Tule River Reservation. San Luis Obispo (Eastern part), CANonattainmentMarginal. San Luis Obispo County (part): That portion of San Luis Obispo County that lies east of a line described as follows: Beginning at the San Luis Obispo County/Santa Barbara County boundary and running north along 120 degrees 24 minutes longitude to the intersection with 35 degrees 27 minutes latitude; east along 35 degrees 27 minutes latitude to the intersection with 120 degrees 18 minutes longitude; then north along 120 degrees 18 minutes longitude to the San Luis Obispo County/Monterey County boundary. Sutter Buttes, CANonattainmentMarginal. Sutter County (part): That portion of the Sutter Buttes mountain range at or above 2,000 feet in elevation. Tuolumne County, CANonattainmentMarginal. Tuolumne County: Chicken Ranch Rancheria of Me-Wuk Indians of California. Tuolumne Band of Me-Wuk Indians of the Tuolumne Rancheria of California. Tuscan Buttes, CANonattainmentMarginal (Rural Transport). Tehama County (part): Those portions of the immediate Tuscan Buttes area at or above 1,800 feet in elevation. Ventura County, CANonattainmentSerious. Ventura County (part): That part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands. Morongo Band of Mission Indians 4NonattainmentSerious. Pechanga Band of Luiseño Mission Indians of the Pechanga Reservation:Nonattainment11/7/22Moderate. Includes the main body of the contiguous Pechanga Band Reservation and the noncontiguous area known as Pu'eska Mountain, excluding non-contiguous tribal lands in the Los Angeles-South Coast Air Basin, CA (Meadowbrook parcel). 3Rest of State: Colusa CountyAttainment/Unclassifiable Eastern Nevada CountyAttainment/Unclassifiable Nevada County (part) remainder. Eastern Riverside CountyAttainment/Unclassifiable Riverside County (part) remainder. Glenn CountyAttainment/Unclassifiable Inyo CountyAttainment/Unclassifiable Lake County1/16/18Attainment/Unclassifiable Lake Tahoe Air BasinAttainment/Unclassifiable El Dorado County (part) remainder. Placer County (part) remainder. North Central Coast Air BasinAttainment/Unclassifiable Monterey County. San Benito County. Santa Cruz County. North Coast Air BasinAttainment/Unclassifiable Del Norte County1/16/18 Humboldt County1/16/18 Mendocino County. Sonoma County (part) remainder. Trinity County. Northeast Plateau Air Basin1/16/18Attainment/Unclassifiable Lassen County. Modoc County. Siskiyou County. Northeastern Kern CountyAttainment/Unclassifiable Kern County (part) remainder. Northeast San Bernardino CountyAttainment/Unclassifiable San Bernardino County (part) remainder. Northern Channel Islands.Attainment/Unclassifiable The Channel Islands located in the South Central Coast Air Basin: Anacapa, San Miguel, San Nicholas, Santa Barbara, Santa Cruz, and Santa Rosa Islands. Northern Great Basin Valleys Air BasinAttainment/Unclassifiable Alpine County. Mono County. Northern Mountain CountiesAttainment/Unclassifiable Plumas County. Sierra County. Santa Barbara County (part) remainderAttainment/Unclassifiable That part of Santa Barbara County excluding the Channel Islands of San Miguel, Santa Barbara, Santa Cruz, and Santa Rosa Islands. Shasta CountyAttainment/Unclassifiable Sutter and Yuba CountiesAttainment/Unclassifiable Sutter County (part) remainder. Yuba County. Tehama County (part) remainderAttainment/Unclassifiable Western San Luis Obispo CountyAttainment/Unclassifiable San Luis Obispo County (part) remainder.

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is August 3, 2018, unless otherwise noted.

3 See Section 23.0 of the EPA's technical support document for California, titled “California Final Area Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD),” for more information and maps showing the locations of the main body of the reservation and the non-contiguous Pu'eska Mountain and Meadowbrook lands (available in Docket ID: EPA-HQ-OAR-2017-0548).

4 See Section 22.0 of the EPA's technical support document for California, titled “California Final Area Designations for the 2015 Ozone National Ambient Air Quality Standards Technical Support Document (TSD),” for more information and maps showing the boundaries of the nonattainment area (available in Docket ID: EPA-HQ-OAR-2017-0548).

California—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS aDate 1Type Los Angeles County—South Coast Air Basin, CA: Los Angeles County (part)12/31/10Nonattainment. That portion of Los Angeles County which lies south and west of line described as follows: 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; then North along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; 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; 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; 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); then west along the Township line common to Township 7 North and Township 6 North; 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; then along the south boundaries of Sections 13, 14, 15, 16, 17 and 18, Township 7 North and Range 16 West; 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); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary. Rest of StateUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[43 FR 8964, Mar. 3, 1978] Editorial Note:For Federal Register citations affecting § 81.305, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

AUTHORITY: 42 U.S.C. 7401,

SOURCE: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.

CITE AS: 40 CFR 81.305