{"data":{"id":"us/40-cfr-81.305","jurisdiction":"us","citation":"40 CFR 81.305","heading":"California.","body":"California—TSP\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nNorth Coast Air Basin:\nDel Norte County X\nHumboldt County X\nMendocino County X\nSonoma County (North Coast Air Basin portion) X\nTrinity County X\nLake County Air Basin X\nNorth Central Coast Air Basin X\nSouth Central Coast Air Basin:\nSan Luis Obispo County:\nSalinas Valley-El Pomar Estrella Planning Area X\nNon-Salinas Valley X\nSanta Barbara County (AQMA portion) X\nSanta Barbara County (Non-AQMA portion):\nA. West area of north-south boundary separating Santa Ynez and Lompoc Valleys:\nSanta Maria Area X\nOutside Santa Maria Area X\nB. East area of north-south boundary separating Santa Ynez and Lompoc Valleys X\nVentura County:\nNorth of 34°23′ North Latitude X\nSouth of 34°23′ North Latitude X\nChannel Islands X\nSan Diego Air Basin:\nSan Diego County (West portion) X\nSan Diego County (East portion) X\nSouth Coast Air Basin X\nSan Joaquin Valley Air Basin X\nSacramento Valley Air Basin (SVAB):\nSacramento County X\nSolano County (SVAB Portion) X\nYolo County X\nButte County X\nColusa County X\nGlenn County X\nShasta County (Sacramento Valley portion) X\nSutter County X\nTehama County X\nYuba County X\nGreat Basin Valleys Air Basin\nNortheast Plateau Air Basin (NEPAB):\nShasta County (NEPAB portion) X\nRest of Air Basin X\nSoutheast Desert Air Basin:\nKern County (S.E. Desert Air Basin Portion) X\nImperial County X\nLos Angeles County (S.E. Desert Air Basin Portion):\nLancaster Quartz Hill Area X\nOutside Lancaster Quartz Hill Area X\nRiverside County (Coachella Valley planning area) X\nRiverside County (remainder of County)\nSan Bernardino County (S.E. Desert AQMA Portion):\nVictorville Area X\nNon-Victorville Area X\nRiverside County (non-AQMA Portion) X\nSan Bernardino County (non-AQMA Portion) X\nLake Tahoe Air Basin X\nSan Francisco Bay Area Air Basin:\nSolano County (S.F. Bay Area Air Basin portion) X\nSan Mateo County X\nMarin County X\nNapa County X\nSonoma County (S.F. Bay Area Air Basin portion) X\nAlameda County X\nContra Costa County X\nSan Francisco County X\nSanta Clara County X\nRest of Air Basin X\nMountain Counties Air Basin:\nPlacer County (AQMA portion) X\nPlacer County (excluding AQMA portion and Lake Tahoe portion) X\nAmador County X\nCalaveras County X\nEl Dorado County (excluding Lake Tahoe Air Basin portion) X\nMariposa County X\nNevada County X\nPlumas County X\nSierra County X\nTuolumne County X\nCalifornia—1971 Sulfur Dioxide NAAQS\n[Primary and Secondary]\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nNorth Coast Air Basin:\nDel Norte County X\nHumboldt County X\nMendocino County X\nSonoma County (North Coast Basin portion) X\nTrinity County X\nLake County Air Basin X\nSan Francisco Bay Area Air Basin X\nNorth Central Coast Air Basin:\nMonterey County X\nSan Benito County X\nSanta Cruz County X\nSouth Central Coast Air Basin:\nSan Luis Obispo County X\nSanta Barbara County (AQMA portion) X\nSanta Barbara County (non-AQMA portion) X\nVentura County X\nChannel Islands X\nSan Diego Air Basin:\nSan Diego County (West portion) X\nSan Diego County (East portion) X\nSouth Coast Air Basin:\nLos Angeles County (South Coast Air Basin portion) X\nOrange County X\nRiverside County (South Coast Air Basin portion) X\nSouth Coast Basin portion of San Bernardino County\nSan Joaquin Valley Air Basin:\nFresno County X\nKern County X\nKings County X\nMadera County X\nMerced County X\nSan Joaquin County X\nStanislaus County X\nTulare County X\nSacramento Valley Air Basin X\nGreat Basin Valley's Air Basin X\nNorth East Plateau Air Basin X\nMountain Counties Air Basin X\nSoutheast Desert Air Basin excluding Imperial Co X\nImperial County X\nLake Tahoe Air Basin X\nCalifornia—2010 Sulfur Dioxide NAAQS\n[Primary]\nDesignated area 1 Designation\nDate 2 Type\nGreat Basin Valleys Air Basin Attainment/Unclassifiable.\nAlpine County\nInyo County\nMono County\nLake County Air Basin Attainment/Unclassifiable.\nLake County\nLake Tahoe Air Basin Attainment/Unclassifiable.\nEl Dorado County (part)\nThat portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake\nPlacer County (part)\nThat 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. \u0026 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. \u0026 M., thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, M.D.B. \u0026 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\nMojave Desert Air Basin Attainment/Unclassifiable.\nKern County (part)\nThat 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\nLos Angeles County (part)\nThat 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\nRiverside County (part)\nThat 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\nSan Bernardino County (part)\nThat 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\nMountain Counties Air Basin Attainment/Unclassifiable.\nAmador County\nCalaveras County\nEl Dorado County (part)\nAll of El Dorado County except that portion included in the Lake Tahoe Air Basin\nMariposa County\nNevada County\nPlacer County (part)\nAll of Placer County except that portion included in the Lake Tahoe Air Basin and that portion included in the Sacramento Valley Air Basin\nPlumas County\nSierra County\nTuolumne County\nNorth Central Air Basin Attainment/Unclassifiable.\nMonterey County\nSan Benito County\nSanta Cruz County\nNorth Coast Air Basin Attainment/Unclassifiable.\nDel Norte County\nHumboldt County\nMendocino County\nSonoma County (part)\nThat 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\nTrinity County\nNortheast Plateau Air Basin Attainment/Unclassifiable.\nLassen County\nModoc County\nSiskiyou County\nSacramento Valley Air Basin Attainment/Unclassifiable.\nButte County\nColusa County\nGlenn County\nPlacer County (part)\nThat portion of Placer County which lies west of Range 9 east, M.D.B. \u0026 M\nSacramento County\nShasta County\nSolano County (part)\nThat 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. \u0026 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\nSutter County\nTehama County\nYolo County\nYuba County\nSalton Sea Air Basin Attainment/Unclassifiable.\nImperial County\nRiverside County (part)\nThat 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\nSan Diego Air Basin Attainment/Unclassifiable.\nSan Diego County\nSan Francisco Bay Area Air Basin Attainment/Unclassifiable.\nAlameda County\nContra Costa County\nMarin County\nNapa County\nSan Francisco County\nSan Mateo County\nSanta Clara County\nSolano County (part)\nThat 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. \u0026 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\nSonoma County (part)\nThat 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\nSan Joaquin Valley Air Basin Attainment/Unclassifiable.\nFresno County\nKern County (part)\nThat 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\nKings County\nMadera County\nMerced County\nSan Joaquin County\nStanislaus County\nTulare County\nSouth Central Air Basin Attainment/Unclassifiable.\nSan Luis Obispo County\nSanta Barbara County\nVentura County\nSouth Coast Air Basin Attainment/Unclassifiable.\nLos Angeles County (part)\nThat 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\nOrange County\nRiverside County (part)\nThat 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\nSan Bernardino County (part)\nThat 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\n1 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.\n2 This date is April 9, 2018, unless otherwise noted.\nCalifornia—Carbon Monoxide\nDesignated Area Designation Classification\nDate 1 Type Date 1 Type\nBakersfield Area:\nKern County (part)\nBakersfield Metropolitan Area (Urbanized part) 6/1/1998 Attainment\nChico Area:\nButte County (part) Chico Urbanized Area (Census Bureau Urbanized part) 6/1/1998 Attainment\nFresno Area:\nFresno County (part) Fresno Urbanized Area 6/1/1998 Attainment\nLake Tahoe North Shore Area:\nPlacer 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. \u0026 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. \u0026 M., thence south along the west line of Sections 3 and 10, Township 15 north, Range 16 East, M.D.B. \u0026 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, 1998 Attainment\nLake Tahoe South Shore Area:\nEl 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 6/1/1998 Attainment\nLos Angeles-South Coast Air Basin Area 6/11/2007 Attainment\nLos Angeles County (part)—that portion of Los Angeles County which lies south and west of a line described as follows:\n1. 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;\n2. Then north along the range line common to Range 8 West and Range 9 West;\n3. Then west along the township line common to Township 4 North and Township 3 North;\n4. 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;\n5. 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;\n6. 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);\n7. Tthen west along the township line common to Township 7 North and Township 6 North;\n8. 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;\n9. Then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West;\n10. 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);\n11. Then west along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant;\n12. Then west and north along this land grant boundary to the Los Angeles-Kern County boundary.\nOrange County:\nRiverside County (part)—that portion of Riverside County which lies to the west of a line described as follows:\n1. 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;\n2. Then east along the township line common to Township 8 South and Township 7 South;\n3. Then north along the range line common to Range 5 East and Range 4 East;\n4. 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;\n5. Then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East;\n6. Then west along the township line common to Township 5 South and Township 6 South;\n7. Then north along the range line common to Range 4 East and Range 3 East;\n8. Then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East;\n9. Then north along the range line common to Range 2 East and Range 3 East to the Riverside-San Bernardino county line.\nSan Bernardino County—that portion of San Bernardino County which lies south and west of a line described as follows:\n1. 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;\n2. Then west along the township line common to Township 3 North and Township 2 North to the San Bernardino—Los Angeles County boundary.\nModesto Area:\nStanislaus County (part) Modesto Urbanized Area (Census Bureau Urbanized Area) 6/1/1998 Attainment\nSacramento Area:\nCensus Bureau Urbanized Area) 6/1/1998 Attainment\nPlacer County (part)\nSacramento County (part)\nYolo County (part)\nSan Diego Area:\nSan 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: 6/1/1998 Attainment\n1. Beginning at the Northwest of Township 9 South, Range 1 West, San Bernardino Base and Meridian;\n2. thence running Southerly along the West line of said township to the south line therof;\n3. thence Easterly along said South line to the range line between Range 1 West and Range 1 East;\n4. thence Southerly along said range line to the township line between Township 11 South and 12 South;\n5. thence Easterly along said township line to the range line between Range 1 East and Range 2 East;\n6. thence Southerly along said range line to the international boundary between the United States of America and Mexico.\nSan Francisco-Oakland-San Jose Area:\nUrbanized Areas 6/1/1998 Attainment\nAlameda County (part)\nContra Costa County (part)\nMarin County (part)\nNapa County (part)\nSan Francisco County\nSan Mateo County (part)\nSanta Clara County (part)\nSolano County (part)\nSonoma County (part)\nStockton Area:\nSan Joaquin County (part) 6/1/1998 Attainment\nStockton Urbanized Area\nGreat Basin Valley Air Basin Unclassifiable/Attainment\nAlpine County\nInyo County\nMono County\nLake County Air Basin\nLake County Unclassifiable/Attainment\nMountain Counties Air Basin\nAmador County Unclassifiable/Attainment\nCalaveras County Unclassifiable/Attainment\nEl Dorado County (part)\nexcluding Lake Tahoe South Shore Unclassifiable/Attainment\nMariposa County Unclassifiable/Attainment\nNevada County Unclassifiable/Attainment\nPlacer County (part)\nexcluding Lake Tahoe Air Basin portion and AQMA portion Unclassifiable/Attainment\nAQMA portion (of Placer County) Unclassifiable/Attainment\nPlumas County Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nNorth Central Coast Air Basin\nMonterey County Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nNorth Coast Air Basin Unclassifiable/Attainment\nDel Norte County\nHumboldt County\nMendocino County\nSonoma County (part)\nRemainder of County\nTrinity County\nNortheast Plateau Air Basin Unclassifiable/Attainment\nLassen County\nModoc County\nSiskiyou County\nSacramento Valley Air Basin (portion)\nButte County (part)\nArea other than Chico Urbanized Area (Census Bureau urbanized part) Unclassifiable/Attainment\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nSacramento County (part)\nArea other than Census Bureau urbanized areas Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nSolano County (part)\nSacramento Valley Air Basin portion Unclassifiable/Attainment\nSutter County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nYolo County (part)\nArea outside Census Bureau urbanized areas Unclassifiable/Attainment\nYuba County Unclassifiable/Attainment\nSan Diego Air Basin (Remainder of)\nSan Diego County (part)\nRemainder of County Unclassifiable/Attainment\nSan Francisco Bay Area Air Basin Unclassifiable/Attainment\nArea other than urbanized Areas\nAlameda County (part)\nContra Costa County (part)\nMarin County (part)\nNapa County (part)\nSan Mateo County (part)\nSanta Clara County (part)\nSolano County (part)\nSonoma County (part)\nSan Joaquin Valley Air Basin\nFresno County (part)\nOutside Fresno Urbanized Area Unclassifiable/Attainment\nKern County (part)\nArea other than Bakersfield Metropolitan Area (Urbanized part) Unclassifiable/Attainment\nKings County Unclassifiable/Attainment\nMadera County Unclassifiable/Attainment\nMerced County Unclassifiable/Attainment\nSan Joaquin County (part)\nOutside Stockton urbanized area Unclassifiable/Attainment\nStanislaus County (part)\nOutside Modesto Urbanized Area (Census Bureau Urbanized Area) Unclassifiable/Attainment\nTulare County Unclassifiable/Attainment\nSouth Central Coast Air Basin\nChannel Islands Unclassifiable/Attainment\nSan Luis Obispo County Unclassifiable/Attainment\nSanta Barbara County Unclassifiable/Attainment\nVentura County Unclassifiable/Attainment\nSoutheast Desert Air Basin\nImperial County Unclassifiable/Attainment\nKern County (part)\nexcluding San Joaquin Valley portion Unclassifiable/Attainment\nLos Angeles County\nexcluding Los Angeles - South Coast Air Basin portion Unclassifiable/Attainment\nRiverside County (part) Portion excluding Los Angeles-South Coast Air Basin Unclassifiable/Attainment.\nSan Bernardino Co(part)\nAQMA portion (excluding Los Angeles - South Coast Air Basin) Unclassifiable/Attainment\nNon-AQMA portion (excluding Los Angeles - South Coast Air Basin) Unclassifiable/Attainment\n1 This date is November 15, 1990, unless otherwise noted.\nCalifornia—Ozone (1-Hour Standard)4\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nChico Area:\nButte County (3) Nonattainment (3) Sec. 185A Area.2\nImperial County Area:\nImperial County 11/15/1990 Nonattainment 11/15/1990 Sec. 185A Area.2\nLos Angeles-South Coast Air Basin Area 5 11/15/1990 Nonattainment 11/15/1990 Extreme.\nLos Angeles County (part) 11/15/1990 Nonattainment 11/15/1990 Extreme.\nThat portion of Los Angeles County which lies south and west of a line described as follows:\n1. 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;\n2. then north along the range line common to Range 8 West and Range 9 West;\n3. then west along the Township line common to Township 4 North and Township 3 North;\n4. 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;\n5. 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;\n6. 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);\n7. then west along the Township line common to Township 7 North and Township 6 North;\n8. 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;\n9. then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West;\n10. 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);\n11. 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;\n12. then west and north along this land grant boundary to the Los Angeles-Kern County boundary.\nOrange County 11/15/1990 Nonattainment 11/15/1990 Extreme.\nRiverside County (part) 11/15/1990 Nonattainment 11/15/1990 Extreme.\nThat portion of Riverside County which lies to the west of a line described as follows:\n1. 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;\n2. then east along the Township line common to Township 8 South and Township 7 South;\n3. then north along the range line common to Range 5 East and Range 4 East;\n4. 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;\n5. then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East;\n6. then west along the Township line common to Township 5 South and Township 6 South;\n7. then north along the range line common to Range 4 East and Range 3 East;\n8. then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East;\n9. then north along the range line common to Range 2 East and Range 3 East to the Riverside-San Bernardino County line.\nSan Bernardino County (part) 11/15/1990 Nonattainment 11/15/1990 Extreme.\nThat portion of San Bernardino County which lies south and west of a line described as follows:\n1. 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;\n2. then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary.\nMorongo Band of Mission Indians 6 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nMonterey Bay Area Attainment\nMonterey County\nSan Benito County\nSanta Cruz County\nSacramento Metro Area 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nEl Dorado County (part):\nAll portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake.\nPlacer County (part):\nAll 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. \u0026 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. \u0026 M., thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, M.D.B. \u0026 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. 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nSacramento County 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nSolano County (part) That portion of Solano County which lies north and east of a line described as follows: 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nDescription 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. \u0026 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 Counties 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nSutter 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. 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nYolo County 11/15/1990 Nonattainment 6/01/1995 Severe-15.\nSan Diego Area:\nSan Diego County 7/28/2003 Attainment\nSan Francisco-Bay Area 8/10/1998 Nonattainment 8/10/1998 Not classified/Moderate under 23 U.S.C.\n8/23/1999 104(b)(2).\nAlameda County 8/10/1998 ......do 8/23/1999 Do.\nContra Costa County 8/10/1998 ......do 8/23/1999 Do.\nMarin County 8/10/1998 ......do 8/23/1999 Do.\nNapa County 8/10/1998 ......do 8/23/1999 Do.\nSan Francisco County 8/10/1998 ......do 8/23/1999 Do.\nSan Mateo County 8/10/1998 ......do 8/23/1999 Do.\nSanta Clara County 8/10/1998 ......do 8/23/1999 Do.\nSolano County (part) 8/10/1998 ......do 8/23/1999 Do.\nThat 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. \u0026 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.\nSonoma County (part) 8/10/1998 ......do 8/23/1999 Do.\nThat 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.\nEast Kern County:\nThat 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 Boundary 6/21/2004 Attainment\nSan Joaquin Valley Area:\nFresno County 10/27/2025 (7)\nKern County (part). That portion of Kern County that lies west and north of a line described below: 10/27/2025 (7)\nBeginning 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:\nKings County 9/25/2025 (7)\nMadera County 10/27/2025 (7)\nMerced County 10/27/2025 (7)\nSan Joaquin County 10/27/2025 (7)\nStanislaus County 10/27/2025 (7)\nTulare County 10/27/2025 (7)\nSanta Barbara-Santa Maria-Lompoc Area:\nSanta Barbara County 8/8/2003 Attainment\nSoutheast Desert Modified AQMA Area 11/15/1990 Nonattainment 11/15/1990 Severe-17.\nLos Angeles County (part)—that portion of Los Angeles County which lies north and east of a line described as follows:\n1. 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;\n2. then north along the range line common to Range 8 West and Range 9 West;\n3. then west along the Township line common to Township 4 North and Township 3 North;\n4. 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;\n5. 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;\n6. 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);\n7. then west along the Township line common to Township 7 North and Township 6 North;\n8. 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;\n9. then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West;\n10. 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);\n11. then west along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant;\n12. then west and north along this land grant boundary to the Los Angeles-Kern County boundary.\nRiverside County 11/15/1990 Nonattainment 11/15/1990 Severe-17\nCoachella Valley planning area—that portion of Riverside County which lies to the east of a line described as follows:\n1. 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;\n2. then east along the Township line common to Township 8 South and Township 7 South;\n3. then north along the range line common to Range 5 East and Range 4 East;\n4. 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;\n5. then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East;\n6. then west along the Township line common to Township 5 South and Township 6 South;\n7. then north along the range line common to Range 4 East and Range 3 East;\n8. then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East;\n9. 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:\n10. 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;\n11. 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;\n12. then west and northwest along the ridge line to the southwest corner of Township 5 South, Range 14 East;\n13. then north along the range line common to Range 14 East and Range 13 East;\n14. then west and northwest along the ridge line to Monument Mountain, elevation 4834 feet;\n15. then southwest and then northwest along the ridge line of the Little San Bernardino Mountains to Quail Mountain, elevation 5814 feet;\n16. then northwest along the ridge line to the Riverside-San Bernardino County line\nSan Bernadino County (part)—that portion of San Bernardino County which lies north and east of a line described as follows: 11/15/1990 Nonattainment 11/15/1990 Severe-17.\n1. 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;\n2. 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:\n3. latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west.\nVentura County Area:\nVentura County 11/15/1990 Nonattainment 11/15/1990 Severe-15.\nYuba City Area:\nSutter County (part—northern portion) (3) Nonattainment (3) Sec. 185A Area.2.\nNorth 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.\nYuba County (3) Nonattainment (3) Sec. 185A Area.2.\nGreat Basin Valleys Air Basin Unclassifiable/Attainment\nAlpine County\nInyo County\nMono County\nLake County Air Basin Unclassifiable/Attainment\nLake County\nLake Tahoe Air Basin Unclassifiable/Attainment\nEl Dorado County (part)\nLake Tahoe Area: As described under 40 CFR 81.275.\nPlacer County (part)\nLake Tahoe Area: As described under 40 CFR 81.275.\nMountain Counties Air Basin (Remainder of):\nAmador County 11/15/1990 Unclassifiable/Attainment 11/15/1990\nCalaveras County 11/15/1990 Unclassifiable/Attainment 11/15/1990\nMariposa County Unclassifiable/Attainment\nNevada County Unclassifiable/Attainment\nPlumas County Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nNorth Coast Air Basin Unclassifiable/Attainment\nDel Norte County\nHumboldt County\nMendocino County\nSonoma County (part)\nRemainder of County\nTrinity County\nNortheast Plateau Air Basin Unclassifiable/Attainment\nLassen County\nModoc County\nSiskiyou Couny\nSacramento Valley Air Basin (Remainder of):\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nSouth Central Coast Air Basin (Remainder of):\nChannel Islands Unclassifiable/Attainment\nSan Luis Obispo County Unclassifiable/Attainment\nSoutheast Desert NON-AQMA:\nRiverside County (part)\nRemainder of county Unclassifiable/Attainment\nSan Bernadino County (part)\nRemainder of county Unclassifiable/Attainment\n1 This date is October 18, 2000 unless otherwise noted.\n2 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.\n3 This date is January 16, 2001.\n4 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.\n5 Excludes Morongo Band of Mission Indians' Indian country in Riverside County.\n6 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.\n7 The San Joaquin Valley Area was designated and classified as “Extreme” nonattainment on April 16, 2004 and was so designated and classified when the 1-hour ozone standard, designations and classifications were revoked. The area has since attained the 1-hour ozone standard and met all the Clean Air Act criteria for redesignation. All 1-hour ozone standard anti-backsliding obligations for the area are terminated effective October 27, 2025.\nCalifornia—PM-10\nDesignated Area Designation Classification\nDate Type Date Type\nInyo County\nCoso Junction planning area October 4, 2010 Attainment\nThat portion of Inyo County contained within Hydrologic Unit #18090205\nOwens Valley planning area 11/15/1990 Nonattainment 02/08/1993 Serious\nHydrologic Unit #18090103\nSacramento County 10/28/2013 Attainment.\nSan Bernardino County:\nSan Bernardino (part):\nExcluding that portion located in the Trona planning area and excluding that portion located in the South Coast Air Basin 1/20/1994 Nonattainment 1/20/1994 Moderate.\nTrona planning area: That portion of San Bernardino County contained within Hydrologic Unit #18090285 9/5/2002 Nonattainment 9/5/2002 Moderate\nMono County\nMammoth Lakes planning area 11/4/2015 Attainment\nIncludes the following sections:\na. Sections 1-12, 17, and 18 of Township T4S, R28E;\nb. Sections 25-36 of Township T3S, R28E;\nc. Sections 25-36 of Township T3S, R27E;\nd. Sections 1-18 of Township T4S, R27E; and,\ne. Sections 25 and 36 of Township T3S, R26E.\nMono Basin\nHydrologic Unit 1809010 12/29/1993 Nonattainment 12/29/1993 Moderate\nFresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, Tulare Counties:\nIndian Wells Valley planning area: That portion of Kern County contained within Hydrologic Unit #18090205 6/6/2003 Attainment\nSan 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 boundary 12/12/2008 Attainment\nEast 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): 11/15/1990 Nonattainment 02/08/1993 Serious.\n(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\n(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\nRiverside, Los Angeles, Orange, and San Bernardino Counties\nSouth Coast Air Basin 7/26/2013 Attainment\nRiverside County\nCoachella Valley planning area 11/15/1990 Nonattainment 02/08/1993 Serious.\nImperial County:\nImperial Valley planning area: That portion of Imperial County that is defined as follows: 10/19/2020 Attainment\nCommencing 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.\nRest of State 11/15/1990 Unclassifiable\nCalifornia—1997 Annual PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date 2 Type\nLos Angeles-South Coast Air Basin, CA:\nLos Angeles County (part) Nonattainment Moderate\nThat 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);\nthen 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\nOrange County Nonattainment Moderate.\nRiverside County (part) Nonattainment Moderate.\nThat 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\nSan Bernardino County (part) Nonattainment Moderate.\nThat 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\nSan Diego, CA:\nSan Diego County Unclassifiable/Attainment\nSan Joaquin Valley, CA:\nFresno County Nonattainment 5/7/2015 Serious.\nKern County (part) Nonattainment 5/7/2015 Serious.\nThat 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;\nthen 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\nKings County Nonattainment 5/7/2015 Serious.\nMadera County Nonattainment 5/7/2015 Serious.\nMerced County Nonattainment 5/7/2015 Serious.\nSan Joaquin County Nonattainment 5/7/2015 Serious.\nStanislaus County Nonattainment 5/7/2015 Serious.\nTulare County Nonattainment 5/7/2015 Serious.\nNorth Coast Air Basin:\nDel Norte County Unclassifiable/Attainment\nHumboldt County Unclassifiable/Attainment\nMendocino County Unclassifiable/Attainment\nSonoma County (part) Unclassifiable/Attainment\nThat 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;\nthence 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\nTrinity County 3/7/2011 Unclassifiable/Attainment\nNortheast Plateau Air Basin:\nLassen County 3/7/2011 Unclassifiable/Attainment\nModoc County 3/7/2011 Unclassifiable/Attainment\nSiskiyou County 3/7/2011 Unclassifiable/Attainment\nLake County Air Basin:\nLake County Unclassifiable/Attainment\nUpper Sacramento Valley Region:\nButte County (remainder) 3/7/2011 Unclassifiable/Attainment\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nShasta County 3/7/2011 Unclassifiable/Attainment\nSutter County (part) Unclassifiable/Attainment\nTehama County 3/7/2011 Unclassifiable/Attainment\nYuba County (remainder) 3/7/2011 Unclassifiable/Attainment\nSacramento Metropolitan Region:\nEl Dorado County (part) Unclassifiable/Attainment\nAll portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake\nPlacer County (part) Unclassifiable/Attainment\nAll 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,\nthen northwesterly direction to the point of beginning\nSacramento County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nThat 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\nSutter County (part) Unclassifiable/Attainment\nThat 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\nYolo County Unclassifiable/Attainment\nNorthern Mountain Counties:\nNevada County Unclassifiable/Attainment.\nPlumas County 3/7/2011 Unclassifiable/Attainment\nSierra County 3/7/2011 Unclassifiable/Attainment\nCentral Mountain Counties:\nAmador County Unclassifiable/Attainment\nCalaveras County Unclassifiable/Attainment\nSouthern Mountain Counties:\nMariposa County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nLake Tahoe Air Basin:\nEl Dorado County (part) Unclassifiable/Attainment\nThat portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake.\nPlacer County (part) Unclassifiable/Attainment\nThat 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\nSan Francisco Bay Area Air Basin:\nAlameda County Unclassifiable/Attainment\nContra Costa County Unclassifiable/Attainment\nMarin County Unclassifiable/Attainment\nNapa County Unclassifiable/Attainment\nSan Francisco County Unclassifiable/Attainment\nSan Mateo County Unclassifiable/Attainment\nSanta Clara County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nPortion 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. \u0026 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\nSonoma County (part) Unclassifiable/Attainment.\nThat 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;\nthence 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\nNorth Central Coast Air Basin:\nMonterey County Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nSan Luis Obispo County:\nSan Luis Obispo County Unclassifiable/Attainment\nSanta Barbara County:\nSanta Barbara County (part) Unclassifiable/Attainment\nExcluding San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands\nSanta Barbara County (part) Unclassifiable/Attainment\nSan Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands.\nVentura County:\nVentura County (part) Unclassifiable/Attainment\nExcluding Anacapa and San Nicolas Islands.\nVentura County (part) Unclassifiable/Attainment\nAnacapa and San Nicolas Islands.\nGreat Basin Valleys Air Basin:\nAlpine County Unclassifiable/Attainment\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that lies outside Hydrologic Unit Number 18090205.\nMono County Unclassifiable/Attainment\nCoso Junction:\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that lies inside Hydrologic Unit Number 18090205.\nEastern Kern County:\nKern County (part) Unclassifiable/Attainment\nThat 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;\nthen 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\nIndian Wells Valley:\nKern County (part) Unclassifiable/Attainment\nThat portion of Kern County that lies inside Hydrologic Unit Number 18090205.\nWestern Mojave Desert and Antelope Valley:\nLos Angeles County (part) Unclassifiable/Attainment\nThat 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);\nthen 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.\nTrona:\nSan Bernardino County (part) Unclassifiable/Attainment\nThat portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205.\nCoachella Valley:\nRiverside County (part) Unclassifiable/Attainment\nThat 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;\nthen 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.\nFar Eastern Riverside and San Bernardino Counties:\nSan Bernardino County (remainder) Unclassifiable/Attainment\nRiverside County (remainder) Unclassifiable/Attainment.\nImperial County:\nImperial County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\n2 This date is July 2, 2014, unless otherwise noted.\nCalifornia—2012 Annual PM2.5 NAAQS\n[Primary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nLos Angeles-South Coast Air Basin, CA:\nLos Angeles County (part) Nonattainment 12/9/2020 Serious.\nThat 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\nOrange County Nonattainment 12/9/2020 Serious.\nRiverside 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) Nonattainment 12/9/2020 Serious.\nSan Bernardino County (part) Nonattainment 12/9/2020 Serious.\nThat 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\nImperial County, CA:\nImperial County (part) Nonattainment Moderate.\nThat 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\nSan Joaquin Valley, CA:\nFresno County Nonattainment 12/27/2021 Serious.\nKern 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 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 Nonattainment 12/27/2021 Serious.\nKings County Nonattainment 12/27/2021 Serious.\nMadera County Nonattainment 12/27/2021 Serious.\nMerced County Nonattainment 12/27/2021 Serious.\nSan Joaquin County Nonattainment 12/27/2021 Serious.\nStanislaus County Nonattainment 12/27/2021 Serious.\nTulare County Nonattainment 12/27/2021 Serious.\nPlumas County, CA\nPlumas County (part) Nonattainment January 30, 2023 Serious.\nThat 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)\nSan Diego Air Basin, CA:\nSan Diego County (excluding the lands of the Pechanga Band of Luiseño Mission Indians of the Pechanga Reservation) Unclassifiable/Attainment\nNorth Coast Air Basin:\nDel Norte County Unclassifiable/Attainment\nHumboldt County Unclassifiable/Attainment\nMendocino County Unclassifiable/Attainment\nSonoma County (part) Unclassifiable/Attainment\nThat 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\nTrinity County Unclassifiable/Attainment\nNortheast Plateau Air Basin, CA:\nLassen County Unclassifiable/Attainment\nModoc County Unclassifiable/Attainment\nSiskiyou County Unclassifiable/Attainment\nLake County Air Basin, CA:\nLake County Unclassifiable/Attainment\nSacramento Valley Air Basin, CA:\nButte County Unclassifiable/Attainment\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nPlacer County (part) Unclassifiable/Attainment\nThat 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\nSacramento County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nThat 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\nSutter County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nYolo County Unclassifiable/Attainment\nYuba County Unclassifiable/Attainment\nMountain Counties:\nAmador County Unclassifiable/Attainment\nCalaveras County Unclassifiable/Attainment\nEl Dorado (part) Unclassifiable/Attainment\nAll portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake\nMariposa County Unclassifiable/Attainment\nNevada County Unclassifiable/Attainment\nPlacer (part) Unclassifiable/Attainment\nThat 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\nPlumas County (remainder) Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nLake Tahoe Air Basin:\nEl Dorado County (part) Unclassifiable/Attainment\nThat portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake\nPlacer County (part) Unclassifiable/Attainment\nThat 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\nSan Francisco Bay Area Air Basin:\nAlameda County Unclassifiable/Attainment\nContra Costa County Unclassifiable/Attainment\nMarin County Unclassifiable/Attainment\nNapa County Unclassifiable/Attainment\nSan Francisco County Unclassifiable/Attainment\nSan Mateo County Unclassifiable/Attainment\nSanta Clara County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nThat 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\nSonoma County (part) Unclassifiable/Attainment\nThat 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\nNorth Central Coast Air Basin:\nMonterey County Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nSouth Central Coast Air Basin:\nSan Luis Obispo County Unclassifiable/Attainment\nSanta Barbara County Unclassifiable/Attainment\nVentura County Unclassifiable/Attainment\nGreat Basin Valleys Air Basin:\nAlpine County Unclassifiable/Attainment\nInyo County Unclassifiable/Attainment\nMono County Unclassifiable/Attainment\nMojave Desert Air Basin:\nKern County (part) Unclassifiable/Attainment\nThat 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\nLos Angeles County (remainder) Unclassifiable/Attainment\nRiverside County (part) Unclassifiable/Attainment\nThat 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\nSan Bernardino County (remainder) Unclassifiable/Attainment\nSalton Sea Air Basin:\nImperial County (remainder) Unclassifiable/Attainment\nRiverside County (part) Unclassifiable/Attainment\nThat 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;\nthen 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\nPechanga Band of Luiseño Mission Indians Unclassifiable/Attainment\n1 Includes areas of Indian country located in each county or area, except as otherwise specified.\n2 This date is April 15, 2015, unless otherwise noted.\nCalifornia—1997 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date 2 Type\nChico, CA:\nButte County (part) Unclassifiable/Attainment\nThat 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.\nImperial County, CA:\nImperial County (part) Unclassifiable/Attainment\nThat 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.\nLos Angeles-South Coast Air Basin, CA:\nLos Angeles County (part) Nonattainment Moderate.\nThat 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;\nthen 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.\nOrange County Nonattainment Moderate.\nRiverside County (part) Nonattainment Moderate.\nThat 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;\nthen 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).\nThat part of the lands of the Santa Rosa Band of Cahuilla Mission Indians which is excluded from the Riverside County (part) nonattainment area Nonattainment Moderate.\nSan Bernardino County (part) Nonattainment Moderate.\nThat 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.\nSacramento, CA:\nEl Dorado County (part) Unclassifiable/Attainment\nThat 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.\nPlacer County (part) Unclassifiable/Attainment\nThat 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.\nSacramento County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nThat 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,\nthence 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.\nYolo County (part) Unclassifiable/Attainment\nThat 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.\nSan Francisco Bay Area, CA:\nAlameda County Unclassifiable/Attainment\nContra Costa County Unclassifiable/Attainment\nMarin County Unclassifiable/Attainment\nNapa County Unclassifiable/Attainment\nSan Francisco County Unclassifiable/Attainment\nSan Mateo County Unclassifiable/Attainment\nSanta Clara County Unclassifiable/Attainment\nSolano County (part) Unclassifiable/Attainment\nThat 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.\nSonoma County (part) Unclassifiable/Attainment.\nThat 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;\nthence 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.\nSan Joaquin Valley, CA:\nFresno County Nonattainment 5/7/2015 Serious.\nKern County (part) Nonattainment 5/7/2015 Serious.\nThat 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;\nthen 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\nKings County Nonattainment 5/7/2015 Serious.\nMadera County Nonattainment 5/7/2015 Serious.\nMerced County Nonattainment 5/7/2015 Serious.\nSan Joaquin County Nonattainment 5/7/2015 Serious.\nStanislaus County Nonattainment 5/7/2015 Serious.\nTulare County Nonattainment 5/7/2015 Serious.\nYuba City-Marysville, CA:\nSutter County Unclassifiable/Attainment\nYuba County (part) Unclassifiable/Attainment\nThat 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.\nNorth Coast Air Basin:\nDel Norte County Unclassifiable/Attainment\nHumboldt County Unclassifiable/Attainment\nMendocino County Unclassifiable/Attainment\nSonoma County (part) Unclassifiable/Attainment\nThat 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;\nthence 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.\nTrinity County Unclassifiable/Attainment\nNortheast Plateau Air Basin:\nLassen County Unclassifiable/Attainment\nModoc County Unclassifiable/Attainment.\nSiskiyou County Unclassifiable/Attainment\nLake County Air Basin:\nLake County Unclassifiable/Attainment\nUpper Sacramento Valley Region:\nButte County (remainder) Unclassifiable/Attainment\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nYuba County (remainder) Unclassifiable/Attainment\nSacramento Metropolitan Region:\nYolo County (remainder) Unclassifiable/Attainment\nNorthern Mountain Counties:\nNevada County Unclassifiable/Attainment\nPlumas County Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nCentral Mountain Counties:\nAmador County Unclassifiable/Attainment\nCalaveras County Unclassifiable/Attainment\nSouthern Mountain Counties:\nMariposa County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nLake Tahoe Air Basin:\nEl Dorado County (remainder) Unclassifiable/Attainment\nPlacer County (remainder) Unclassifiable/Attainment\nNorth Central Coast Air Basin:\nMonterey County Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nSan Luis Obispo County:\nSan Luis Obispo County Unclassifiable/Attainment\nSanta Barbara County:\nSanta Barbara County (part) Unclassifiable/Attainment\nExcluding San Miguel, Santa Rosa, Santa Cruz and Santa Barbara Islands\nSanta Barbara County (part) Unclassifiable/Attainment\nSan Miguel, Santa Rosa, Santa Cruz and Santa Barbara Islands\nVentura County:\nVentura County (part) Unclassifiable/Attainment\nExcluding Anacapa and San Nicolas Islands.\nVentura County (part) Unclassifiable/Attainment\nAnacapa and San Nicolas Islands.\nGreat Basin Valleys Air Basin:\nAlpine County Unclassifiable/Attainment\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that Lies outside Hydrologic Unit Number 18090205.\nMono County Unclassifiable/Attainment\nCoso Junction:\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that lies inside Hydrologic Unit Number 18090205.\nEastern Kern County:\nKern County (part) Unclassifiable/Attainment\nThat 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;\nThen 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.\nIndian Wells Valley:\nKern County (part) Unclassifiable/Attainment\nThat portion of Kern County that lies inside Hydrologic Unit Number 18090205.\nWestern Mojave Desert and Antelope Valley:\nLos Angeles County (part) Unclassifiable/Attainment\nThat 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;\nthen 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.\nSan Bernardino County (part) Unclassifiable/Attainment\nThat 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.\nTrona:\nSan Bernardino County (part) Unclassifiable/Attainment\nThat portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205.\nCoachella Valley:\nRiverside County (part) Unclassifiable/Attainment\nThat 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;\nthen 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.\nFar Eastern Riverside and San Bernardino Counties:\nSan Bernardino County (remainder) Unclassifiable/Attainment.\nRiverside County (remainder) Unclassifiable/Attainment.\nImperial County (remainder) Unclassifiable/Attainment\nSan Diego County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\n2 This date is July 2, 2014, unless otherwise noted.\nCalifornia—2006 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date 2 Type\nChico, CA:\nButte County (part) August 10, 2018 Attainment\nThat 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\nImperial County, CA:\nImperial County (part) Nonattainment Moderate.\nThat 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.\nLos Angeles-South Coast Air Basin, CA:\nLos Angeles County (part) Nonattainment 02/12/2016 Serious.\nThat 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;\nthen 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 Nonattainment 02/12/2016 Serious.\nOrange County Nonattainment 02/12/2016 Serious.\nRiverside County (part) Nonattainment 02/12/2016 Serious.\nThat 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;\nthen 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) Nonattainment 02/12/2016 Serious.\nThat part of the lands of the Santa Rosa Band of Cahuilla Mission Indians which is excluded from the Riverside County (part) nonattainment area Unclassifiable/Attainment\nSan Bernardino County (part) Nonattainment 02/12/2016 Serious.\nThat 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 Nonattainment 02/12/2016 Serious.\nSacramento, CA:\nEl Dorado County (part) Nonattainment Moderate.\nThat 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.\nPlacer County (part) Nonattainment Moderate.\nThat 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.\nSacramento County Nonattainment Moderate.\nSolano County (part) Nonattainment Moderate.\nThat 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,\nthence 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.\nYolo County (part) Nonattainment Moderate.\nThat 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.\nSan Francisco Bay Area, CA:\nAlameda County Nonattainment Moderate.\nContra Costa County Nonattainment Moderate.\nMarin County Nonattainment Moderate.\nNapa County Nonattainment Moderate.\nSan Francisco County Nonattainment Moderate.\nSan Mateo County Nonattainment Moderate.\nSanta Clara County Nonattainment Moderate.\nSolano County (part) Nonattainment Moderate.\nThat 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,\nthence 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.\nSonoma County (part) Nonattainment Moderate.\nThat 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;\nthence 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.\nSan Joaquin Valley, CA:\nFresno County Nonattainment 2/19/2016 Serious.\nKern County (part) Nonattainment 2/19/2016 Serious.\nThat 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;\nthen 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\nKings County Nonattainment 2/19/2016 Serious.\nMadera County Nonattainment 2/19/2016 Serious.\nMerced County Nonattainment 2/19/2016 Serious.\nSan Joaquin County Nonattainment 2/19/2016 Serious.\nStanislaus County Nonattainment 2/19/2016 Serious.\nTulare County Nonattainment 2/19/2016 Serious.\nYuba City-Marysville, CA\nSutter County 1/8/2015 Attainment\nYuba County (part) 1/8/2015 Attainment\nThat 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.\nRest of State:\nNorth Coast Air Basin:\nDel Norte County Unclassifiable/Attainment\nHumboldt County Unclassifiable/Attainment\nMendocino County Unclassifiable/Attainment\nSonoma County (part) Unclassifiable/Attainment\nThat 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;\nthence 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.\nTrinity County Unclassifiable/Attainment\nNortheast Plateau Air Basin:\nLassen County Unclassifiable/Attainment\nModoc County Unclassifiable/Attainment\nSiskiyou County Unclassifiable/Attainment\nLake County Air Basin:\nLake County Unclassifiable/Attainment\nUpper Sacramento Valley Region:\nButte County (remainder) Unclassifiable/Attainment\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nYuba County (remainder) Unclassifiable/Attainment\nSacramento Metropolitan Region:\nYolo County (remainder) Unclassifiable/Attainment\nNorthern Mountain Counties:\nNevada County Unclassifiable/Attainment\nPlumas County Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nCentral Mountain Counties:\nAmador County Unclassifiable/Attainment\nCalaveras County Unclassifiable/Attainment\nSouthern Mountain Counties:\nMariposa County Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nLake Tahoe Air Basin:\nEl Dorado County (remainder) Unclassifiable/Attainment\nPlacer County (remainder) Unclassifiable/Attainment\nNorth Central Coast Air Basin:\nMonterey County Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nSan Luis Obispo County:\nSan Luis Obispo County Unclassifiable/Attainment\nSanta Barbara County:\nSanta Barbara County (part) Unclassifiable/Attainment\nExcluding San Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands\nSanta Barbara County (part) Unclassifiable/Attainment\nSan Miguel, Santa Rosa, Santa Cruz, and Santa Barbara Islands\nVentura County:\nVentura County (part) Unclassifiable/Attainment\nExcluding Anacapa and San Nicolas Islands.\nVentura County (part) Unclassifiable/Attainment\nAnacapa and San Nicolas Islands.\nGreat Basin Valleys Air Basin:\nAlpine County Unclassifiable/Attainment\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that Lies outside Hydrologic Unit Number 18090205.\nMono County Unclassifiable/Attainment\nCoso Junction:\nInyo County (part) Unclassifiable/Attainment\nThat portion of Inyo County that lies inside Hydrologic Unit Number 18090205.\nEastern Kern County:\nKern County (part) Unclassifiable/Attainment\nThat 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;\nthen 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.\nIndian Wells Valley:\nKern County (part) Unclassifiable/Attainment\nThat portion of Kern County that lies inside Hydrologic Unit Number 18090205.\nWestern Mojave Desert and Antelope Valley:\nLos Angeles County (part) Unclassifiable/Attainment\nThat 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);\nthen 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.\nSan Bernardino County (part) Unclassifiable/Attainment\nThat 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.\nTrona:\nSan Bernardino County (part) Unclassifiable/Attainment\nThat portion of San Bernardino County that lies inside Hydrologic Unit Number 18090205.\nCoachella Valley:\nRiverside County (part) Unclassifiable/Attainment\nThat 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;\nthen 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.\nFar Eastern Riverside and San Bernardino Counties:\nSan Bernardino County (remainder) Unclassifiable/Attainment\nRiverside County (remainder) Unclassifiable/Attainment\nImperial County (remainder) Unclassifiable Attainment\nSan Diego County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 30 days after November 13, 2009, unless otherwise noted.\n2 This date is July 2, 2014, unless otherwise noted.\nCalifornia—NO2 (1971 Annual Standard)\nDesignated area Does not meet primary standards Cannot be classified or better than national standards\nNorth Coast Air Basin X\nSan Francisco Area Air Basin X\nLake County Air Basin X\nNorth Central Coast Air Basin:\nMonterey portion X\nSan Benito portion X\nSanta Cruz portion X\nSouth Central Coast Air Basin:\nSan Luis Obispo Count X\nSanta Barbara AQMA X\nSanta Barbara non-AQMA X\nVentura County X\nChannel Islands X\nSan Diego Air Basin:\nWest San Diego County X\nEast San Diego County X\nSouth Coast Air Basin X\nSan Joaquin Valley Air Basin:\nFresno County X\nKern County (SJVAS portion) X\nKings County X\nMadera County X\nMerced County X\nSan Joaquin County X\nStanislaus County X\nTulare County X\nSacramento Valley Air Basin:\nSacramento County X\nSolano County (Sacramento Valley Air Basin portion) X\nYolo County X\nButte County X\nColusa County X\nGlenn County X\nShasta County (Sacramento Valley portion) X\nSutter County X\nTehama County X\nYuba County X\nGreat Basin Valleys Air Basin X\nNortheast Plateau Air Basin X\nMountain Counties Air Basin:\nAQMA portion of Placer Co. County X\nPlacer County excluding AQMA portion and Lake Tahoe portion X\nAnador County X\nCalaveras County X\nEl Dorado County, excluding Lake Tahoe Air Basin portion X\nMariposa County X\nNevada County X\nPlumas County X\nSierra County X\nTuolumne County X\nSoutheast Desert Air Basin County:\nKern County (S.E. Desert portion) County X\nImperial County X\nLos Angeles County (portion within S.E. Desert Air Basin) X\nRiverside County (portion not within South Coast Air Basin or Coachella Valley planning area) X\nSan Bernardino County (portion within S.E. Desert AQMA) X\nRiverside County (Coachella Valley planning area) X\nSan Bernardino, non-AQMA X\nTahoe Air Basin X\nCalifornia—NO2 (2010 1-Hour Standard)\nDesignated area Designation a\nDate 1 Type\nAmador County APCD:\nAmador County Unclassifiable/Attainment.\nAntelope Valley AQMD:\nLos Angeles County (part) Unclassifiable/Attainment.\nThat 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\nBay Area AQMD:\nAlameda County Unclassifiable/Attainment.\nContra Costa County Unclassifiable/Attainment.\nMarin County Unclassifiable/Attainment.\nNapa County Unclassifiable/Attainment.\nSan Francisco County Unclassifiable/Attainment.\nSan Mateo County Unclassifiable/Attainment.\nSanta Clara County Unclassifiable/Attainment.\nSolano County (part) Unclassifiable/Attainment.\nThat 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\nSonoma County (part) Unclassifiable/Attainment.\nThat 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\nButte County AQMD:\nButte County Unclassifiable/Attainment.\nCalaveras County AQMD:\nCalaveras County Unclassifiable/Attainment.\nColusa County AQMD:\nColusa County Unclassifiable/Attainment.\nEastern Kern APCD:\nKern County (part) Unclassifiable/Attainment.\nThat 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\nEl Dorado County AQMD:\nEl Dorado County Unclassifiable/Attainment.\nFeather River AQMD:\nSutter County Unclassifiable/Attainment.\nYuba County Unclassifiable/Attainment.\nGlenn County APCD:\nGlenn County Unclassifiable/Attainment.\nGreat Basin Unified APCD:\nAlpine County Unclassifiable/Attainment.\nInyo County Unclassifiable/Attainment.\nMono County Unclassifiable/Attainment.\nImperial County APCD:\nImperial County Unclassifiable/Attainment.\nLake County AQMD:\nLake County Unclassifiable/Attainment.\nLassen County APCD:\nLassen County Unclassifiable/Attainment.\nMariposa County APCD:\nMariposa County Unclassifiable/Attainment.\nMendocino County AQMD:\nMendocino County Unclassifiable/Attainment.\nModoc County APCD:\nModoc County Unclassifiable/Attainment.\nMojave Desert AQMD:\nRiverside County (part) Unclassifiable/Attainment.\nThat 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\nSan Bernardino County (part) Unclassifiable/Attainment.\nThat 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\nMonterey Bay Unified APCD:\nMonterey County Unclassifiable/Attainment.\nSan Benito County Unclassifiable/Attainment.\nSanta Cruz County Unclassifiable/Attainment.\nNorth Coast Unified AQMD:\nDel Norte County Unclassifiable/Attainment.\nHumboldt Count Unclassifiable/Attainment.\nTrinity County Unclassifiable/Attainment.\nNorthern Sierra AQMD:\nNevada County Unclassifiable/Attainment.\nPlumas County Unclassifiable/Attainment.\nSierra County Unclassifiable/Attainment.\nNorthern Sonoma County APCD:\nSonoma County (part) Unclassifiable/Attainment.\nThat 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.\nPlacer County APCD:\nPlacer County Unclassifiable/Attainment.\nSacramento Metropolitan AQMD:\nSacramento County Unclassifiable/Attainment.\nSan Diego County APCD:\nSan Diego County Unclassifiable/Attainment.\nSan Joaquin Valley Unified APCD:\nFresno County Unclassifiable/Attainment.\nKern County (part) Unclassifiable/Attainment.\nThat 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.\nKings County Unclassifiable/Attainment.\nMadera County Unclassifiable/Attainment.\nMerced County Unclassifiable/Attainment.\nSan Joaquin County Unclassifiable/Attainment.\nStanislaus County Unclassifiable/Attainment.\nTulare County Unclassifiable/Attainment.\nSan Luis Obispo County APCD:\nSan Luis Obispo County Unclassifiable/Attainment.\nSanta Barbara County APCD:\nSanta Barbara County Unclassifiable/Attainment.\nShasta County AQMD:\nShasta County Unclassifiable/Attainment.\nSiskiyou County APCD:\nSiskiyou County Unclassifiable/Attainment.\nSouth Coast AQMD:\nLos Angeles County (part) Unclassifiable/Attainment.\nThat 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.\nOrange County Unclassifiable/Attainment.\nRiverside County (part) Unclassifiable/Attainment.\nThat 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.\nSan Bernardino County (part) Unclassifiable/Attainment.\nThat 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.\nTehama County APCD:\nTehama County Unclassifiable/Attainment.\nTuolumne County APCD:\nTuolumne County Unclassifiable/Attainment.\nVentura County APCD:\nVentura County Unclassifiable/Attainment.\nYolo-Solano AQMD:\nSolano County Unclassifiable/Attainment.\nThat 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.\nYolo County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after October 31, 2011, unless otherwise noted.\nCalifornia—1997 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation a Category/classification\nDate 1 Type Date 1 Type\nAmador and Calaveras Cos., CA:\n(Central Mountain Cos.)\nAmador County Nonattainment 6/13/2012 Subpart 2/Moderate.\nCalaveras County Nonattainment 6/13/2012 Subpart 2/Moderate.\nChico, CA:\nButte County Nonattainment 6/13/2012 Subpart 2/Marginal.\nKern County (Eastern Kern), CA\nKern County (part) Nonattainment 6/13/2012 Subpart 2/Moderate.\nThat 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\nImperial County, CA: Imperial County Nonattainment 3/14/2008 Subpart 2/Moderate.\nLos Angeles—South Coast Air Basin, CA: d f Nonattainment (2) Subpart 2/Extreme.\nLos Angeles County (part) Nonattainment (2) Subpart 2/Extreme.\nThat 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\nOrange County Nonattainment (2) Subpart 2/Extreme.\nRiverside County (part) Nonattainment (2) Subpart 2/Extreme.\nThat 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\nSan Bernardino County (part) Nonattainment (2) Subpart 2/Extreme.\nThat 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\nPechanga Reservation c April 3, 2015 Attainment.\nMorongo Band of Mission Indians e Nonattainment Subpart 2/Severe-17.\nLos Angeles and San Bernardino Counties (Western Mojave Desert), CA Nonattainment 6/7/2012 Subpart 2/Severe-15.\nLos Angeles County (part) Nonattainment 6/7/2012 Subpart 2/Severe-15.\nThat 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\nSan Bernardino County (part) Nonattainment 6/7/2012 Subpart 2/Severe-15.\nThat 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.\nMariposa and Tuolumne Cos., CA: (Southern Mountain Counties)\nMariposa County Nonattainment 6/13/2012 Subpart 2/Moderate.\nTuolumne County Nonattainment 6/13/2012 Subpart 2/Moderate.\nRiverside Co. (Coachella Valley), CA\nRiverside County (part) g Nonattainment 6/12/19 Subpart 2/Extreme. h\nThat 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:\nThat 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.\nAgua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation e Nonattainment (2) Subpart 2/Severe-15.\nAugustine Band of Cahuilla Indians e Nonattainment (2) Subpart 2/Severe-15.\nCabazon Band of Mission Indians e Nonattainment (2) Subpart 2/Severe-15.\nSanta Rosa Band of Cahuilla Indians e Nonattainment (2) Subpart 2/Severe-15.\nTorres Martinez Desert Cahuilla Indians e Nonattainment (2) Subpart 2/Severe-15.\nTwenty-Nine Palms Band of Mission Indians of California e Nonattainment (2) Subpart 2/Severe-15.\nSacramento Metro, CA Nonattainment (2) Subpart 2/Severe-15.\nEl Dorado County (part) Nonattainment (2) Subpart 2/Severe-15.\nAll portions of the county, except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake.\nPlacer County (part) Nonattainment (2) Subpart 2/Severe-15.\nAll 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.\nSacramento County Nonattainment (2) Subpart 2/Severe-15.\nSolano County (part) Nonattainment (2) Subpart 2/Severe-15.\nThat 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.\nSutter County (part) Nonattainment (2) Subpart 2/Severe-15.\nPortion 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\nYolo County Nonattainment (2) Subpart 2/Severe-15.\nSan Diego, CA\nSan Diego County (part)f\nThat 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 #2b July 5, 2013 Attainment.\nLa Posta Areas #1 and #2 b Unclassifiable/Attainment.\nCuyapaipe Area b Unclassifiable/Attainment.\nManzanita Area b Unclassifiable/Attainment.\nCampo Areas #1 and #2 b Unclassifiable/Attainment.\nSan Francisco Bay Area, CA Nonattainment Subpart 2/Marginal.\nAlameda County Nonattainment Subpart 2/Marginal.\nContra Costa County Nonattainment Subpart 2/Marginal.\nMarin County Nonattainment Subpart 2/Marginal.\nNapa County Nonattainment Subpart 2/Marginal.\nSan Francisco County Nonattainment Subpart 2/Marginal.\nSan Mateo County Nonattainment Subpart 2/Marginal.\nSanta Clara County Nonattainment Subpart 2/Marginal.\nSolano County (part) Nonattainment Subpart 2/Marginal.\nPortion 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. \u0026 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.\nSonoma County (part) Nonattainment Subpart 2/Marginal.\nThat 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.\nSan Joaquin Valley, CA Nonattainment (2) Subpart 2/Extreme.\nFresno County Nonattainment (2) Subpart 2/Extreme.\nKern County (part) Nonattainment (2) Subpart 2/Extreme.\nThat 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.\nKings County Nonattainment (2) Subpart 2/Extreme.\nMadera County Nonattainment (2) Subpart 2/Extreme.\nMerced County Nonattainment (2) Subpart 2/Extreme.\nSan Joaquin County Nonattainment (2) Subpart 2/Extreme.\nStanislaus County Nonattainment (2) Subpart 2/Extreme.\nTulare County Nonattainment (2) Subpart 2/Extreme.\nSutter County (part), CA:\nSutter County (part)\n(Sutter Buttes) That portion of the Sutter Buttes mountain range at or above 2,000 feet in elevation Nonattainment 6/13/2012 Subpart 2/Marginal.\nRemainder of County Unclassifiable/Attainment\nVentura County, CA:\nVentura County (part)—That part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands. Nonattainment 6/19/2008 Subpart 2/Serious.\nRemainder of County Unclassifiable/Attainment\nNevada County (Western part), CA Nevada County (part)\nThat 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 Nonattainment 6/13/2012 Subpart 2/Moderate.\nSanta Barbara-Santa Maria-Lompoc, CA:\nSanta Barbara County Unclassifiable/Attainment\nMohave Desert Air Basin:\nRiverside County (part) remainder Unclassifiable/Attainment\nSan Bernardino County (part) remainder Unclassifiable/Attainment\nGreat Basin Valleys Air Basin Unclassifiable/Attainment\nAlpine County\nInyo County\nMono County\nLake County Air Basin Unclassifiable/Attainment\nLake County\nLake Tahoe Air Basin Unclassifiable/Attainment\nEl Dorado County (part)\nLake Tahoe Area: As described under 40 CFR 81.275.\nPlacer County (part)\nLake Tahoe Area: As described under 40 CFR 81.275.\nMonterey Bay Area Unclassifiable/Attainment\nMonterey County\nSan Benito County\nSanta Cruz County\nMountain Counties Air Basin (remainder of):\nNevada County (part) remainder Unclassifiable/Attainment\nPlumas County Unclassifiable/Attainment\nSierra County Unclassifiable/Attainment\nNorth Coast Air Basin Unclassifiable/Attainment\nDel Norte County\nHumboldt County\nMendocino County\nSonoma County (part) remainder\nTrinity County\nNortheast Plateau Air Basin Unclassifiable/Attainment\nLassen County\nModoc County\nSiskiyou County\nSacramento Valley Air Basin (remainder of):\nColusa County Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nTehama County Unclassifiable/Attainment\nYuba County Unclassifiable/Attainment\nSouth Central Coast Air Basin:\n(remainder of)\nChannel Islands Unclassifiable/Attainment\nSan Luis Obispo County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\nb 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.\nc 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.\nd Excludes Morongo Band of Mission Indians' Indian country in Riverside County.\ne 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.\nf Excludes the Pechanga Reservation.\ng 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.\nh Attainment date is extended to June 15, 2025.\n1 This date is June 15, 2004, unless otherwise noted.\n2 This date is June 4, 2010, unless otherwise noted.\nCalifornia—2008 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nCalaveras County, CA: 2 Calaveras County Nonattainment Marginal.\nChico (Butte County), CA: 2 Nonattainment Marginal.\nButte County\nBerry Creek Rancheria of Maidu Indians of California 3\nEnterprise Rancheria of Maidu Indians of California 3\nMechoopda Indian Tribe of Chico Rancheria 3\nMooretown Rancheria of Maidu Indians of California 3\nImperial County, CA: 2 Nonattainment 6/3/2016 Moderate.\nImperial County\nQuechan Tribe of the Fort Yuma Indian Reservation 3\nTorres Martinez Desert Cahuilla Indians 3\nKern County (Eastern Kern), CA: 2 Nonattainment July 7, 2021 Severe-15.\nKern County (part):\nThat 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.\nLos Angeles-San Bernardino Counties (West Mojave Desert), CA: 2 Nonattainment Severe 15.\nLos Angeles County (part)\nThat 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\nSan Bernardino County (part)\nThat 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\nTwenty-Nine Palms Band of Mission Indians of California 3\nLos Angeles-South Coast Air Basin, CA 2 Nonattainment Extreme.\nLos Angeles County (part)\nThat 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\nOrange County\nRiverside County (part)\nThat 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.\nSan Bernardino County (part)\nThat 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.\nCahuilla Band of Mission Indians of the Cahuilla Reservation 3\nRamona Band of Cahuilla 3\nSan Manuel Band of Mission Indians 3\nSoboba Band of Luiseno Indians 3\nMariposa County, CA: 2 Mariposa County Nonattainment 6/3/2016 Moderate.\nNevada County (Western part), CA: 2 Nonattainment 9/23/2019 Serious.\nNevada County (part):\nThat 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\nRiverside County (Coachella Valley), CA: 2\nRiverside County (part) Nonattainment 4/7/2023 Extreme.\nThat 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.\nAgua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation 3 Nonattainment Severe-15.\nAugustine Band of Cahuilla Indians 3 Nonattainment Severe-15.\nCabazon Band of Cahuilla Indians 3 Nonattainment Severe-15. 8\nSanta Rosa Band of Cahuilla Indians 3 Nonattainment Severe-15.\nTorres Martinez Desert Cahuilla Indians 3 Nonattainment Severe-15.\nTwenty-Nine Palms Band of Mission Indians of California 3 Nonattainment Severe-15.\nSacramento Metro, CA: 2 Nonattainment Severe 15.\nEl Dorado County (part)\nAll portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake.\nPlacer County (part)\nAll 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.\nSacramento County\nSolano County (part)\nThat 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.\nSutter County (part)\nPortion 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.\nYolo County\nShingle Springs Band of Miwok Indians, Shingle Springs Rancheria (Verona Tract) 3\nUnited Auburn Indian Community of the Auburn Rancheria of California 3\nYocha Dehe Wintun Nation 3\nSan Diego County, CA Nonattainment July 2, 2021 Severe-15.\nSan Diego County:\nBarona Group of Capitan Grande Band of Mission Indians of the Barona Reservation. 3\nCampo Band of Diegueno Mission Indians of the Campo Indian Reservation. 3\nCapitan Grande Band of Diegueno Mission Indians of California. 3\nEwiiaapaayp Band of Kumeyaay Indians. 3\nIipay Nation of Santa Ysabel. 3\nInaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation. 3\nJamul Indian Village of California. 3\nLa Jolla Band of Luiseno Indians. 3\nLa Posta Band of Diegueno Mission Indians of the La Posta Indian Reservation. 3\nLos Coyotes Band of Cahuilla and Cupeno Indians. 3\nManzanita Band of Diegueno Mission Indians of the Manzanita Reservation. 3\nMesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation. 3\nPala Band of Luiseno Mission Indians of the Pala Reservation. 3\nPauma Band of Luiseno Mission Indians of the Pauma and Yuima Reservation. 3\nRincon Band of Luiseno Mission Indians of the Rincon Reservation. 3\nSan Pasqual Band of Diegueno Mission Indians of California. 3\nSycuan Band of the Kumeyaay Nation. 3\nViejas (Baron Long) Group of Capitan Grande Band of Mission Indians. 3\nSan Francisco Bay Area, CA: 2 Nonattainment Marginal.\nAlameda County\nContra Costa County\nMarin County\nNapa County\nSan Francisco County\nSan Mateo County\nSanta Clara County\nSolano County (part)\nPortion 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. \u0026 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.\nSonoma County (part)\nThat 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.\nFederated Indians of Graton Rancheria 3\nLytton Rancheria of California 3\nSan Joaquin Valley, CA: 2 Nonattainment Extreme.\nFresno County\nKern County (part)\nThat 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.\nKings County\nMadera County\nMerced County\nSan Joaquin County\nStanislaus County\nTulare County\nBig Sandy Rancheria of Mono Indians of California 3\nCold Springs Rancheria of Mono Indians of California 3\nNorthfork Rancheria of Mono Indians of California 3\nPicayune Rancheria of Chukchansi Indians of California 3\nSanta Rosa Indian Community of the Santa Rosa Rancheria 3\nTable Mountain Rancheria of California 3\nTule River Indian Tribe of the Tule River Reservation 3\nSan Luis Obispo (Eastern San Luis Obispo), CA: 2 Nonattainment 6/3/2016 Marginal.5\nSan Luis Obispo County (part)\nThat 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\nTuscan Buttes, CA: 2 Nonattainment Marginal.\nTehama County (part)\nThose portions of the immediate Tuscan Buttes area at or above 1,800 feet in elevation.\nVentura County, CA: 2 Nonattainment Serious.\nVentura County (part)\nThat part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands.\nMorongo Band of Mission Indians 3 Nonattainment 11/7/2022 Severe.\nPechanga Band of Luiseno Mission Indians of the Pechanga Reservation 3 Nonattainment Moderate.\nRest of State: 4\nAlpine, Inyo, and Mono Counties: Unclassifiable/Attainment\nAlpine County\nInyo County\nMono County\nAmador County Unclassifiable/Attainment\nChannel Islands (Ventura County) Unclassifiable/Attainment\nVentura County (part) remainder\nColusa County Unclassifiable/Attainment\nDel Norte, Humboldt, and Trinity Counties): Unclassifiable/Attainment\nDel Norte County\nHumboldt County\nTrinity County\nNevada County (part) remainder Unclassifiable/Attainment\nGlenn County Unclassifiable/Attainment\nKern County (part) remainder Unclassifiable/Attainment\nLake County Unclassifiable/Attainment\nLake Tahoe (El Dorado County Portion): Unclassifiable/Attainment\nEl Dorado County (part) remainder\nLake Tahoe (Placer County Portion): Unclassifiable/Attainment\nPlacer County (part) remainder\nLassen County Unclassifiable/Attainment\nMendocino County Unclassifiable/Attainment\nModoc County Unclassifiable/Attainment\nMonterey County Unclassifiable/Attainment\nNortheastern San Bernardino County and Eastern Riverside County Unclassifiable/Attainment\nSan Bernardino County (part) remainder\nRiverside County (part) remainder\nSonoma County (part) remainder Unclassifiable/Attainment\nSutter County and Yuba County Unclassifiable/Attainment\nSutter County (part) remainder\nYuba County\nPlumas and Sierra Counties Unclassifiable/Attainment\nSan Benito County Unclassifiable/Attainment\nSanta Barbara County Unclassifiable/Attainment\nSanta Cruz County Unclassifiable/Attainment\nShasta County Unclassifiable/Attainment\nSiskiyou County Unclassifiable/Attainment\nTehama County (part) remainder Unclassifiable/Attainment\nTuolumne County Unclassifiable/Attainment\nSan Luis Obispo County (part) remainder Unclassifiable/Attainment\n1 This date is July 20, 2012, unless otherwise noted.\n2 Excludes Indian country located in each area, unless otherwise noted.\n3 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.\n4 Includes any Indian country in each county or area, unless otherwise specified.\nCalifornia—2015 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nAmador County, CA Nonattainment Marginal.\nAmador County:\nBuena Vista Rancheria of Me-Wuk Indians of California.\nJackson Band of Miwuk Indians.\nButte County, CA Nonattainment Marginal.\nButte County:\nBerry Creek Rancheria of Maidu Indians of California.\nEnterprise Rancheria of Maidu Indians of California.\nMechoopda Indian Tribe of Chico Rancheria.\nMooretown Rancheria of Maidu Indians of California.\nCalaveras County, CA Nonattainment Marginal.\nCalaveras County:\nCalifornia Valley Miwok Tribe.\nImperial County, CA Nonattainment Marginal.\nImperial County:\nQuechan Tribe of the Fort Yuma Indian Reservation.\nTorres Martinez Desert Cahuilla Indians.\nKern County (Eastern Kern), CA Nonattainment 11/29/2021 Serious.\nKern County (part):\nThat 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;\nthen 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.\nLos Angeles-San Bernardino Counties (West Mojave Desert), CA Nonattainment Severe-15.\nLos Angeles County (part):\nThat 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);\nthen 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.\nSan Bernardino County (part):\nThat 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.\nTwenty-Nine Palms Band of Mission Indians of California.\nLos Angeles-South Coast Air Basin, CA Nonattainment Extreme.\nLos Angeles County (part):\nThat 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;\nthen 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.\nOrange County.\nRiverside County (part):\nThat 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,\nthen 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.\nSan Bernardino County (part):\nThat 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.\nCahuilla Band of Indians.\nPechanga Band of Luiseño Mission Indians of the Pechanga Reservation:\nIncludes only non-contiguous tribal lands known as the Meadowbrook parcel.3\nRamona Band of Cahuilla.\nSan Manuel Band of Mission Indians.\nSoboba Band of Luiseño Indians.\nMariposa County, CA Nonattainment 11/7/2022 Moderate.\nMariposa County.\nNevada County (Western part), CA Nonattainment 11/29/2021 Serious.\nNevada County (part):\nThat 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.\nRiverside County (Coachella Valley), CA Nonattainment Severe-15.\nRiverside County (part):\nThat 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;\nthen 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.\nAgua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation.\nAugustine Band of Cahuilla Indians.\nCabazon Band of Mission Indians.\nSanta Rosa Band of Cahuilla Indians.\nTorres Martinez Desert Cahuilla Indians.\nTwenty-Nine Palms Band of Mission Indians of California.\nSacramento Metro, CA Nonattainment 11/29/2021 Serious.\nEl Dorado County (part):\nAll portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake.\nPlacer County (part):\nAll 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.\nSacramento County.\nSolano County (part):\nThat 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.\nSutter County (part):\nPortion 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.\nYolo County:\nShingle Springs Band of Miwok Indians, Shingle Springs Rancheria.\nUnited Auburn Indian Community of the Auburn Rancheria of California.\nWilton Rancheria.\nYocha Dehe Wintun Nation.\nSan Diego County, CA 2 Nonattainment July 2, 2021 Severe-15.\nSan Diego County: 2\nBarona Group of Capitan Grande Band of Mission Indians of the Barona Reservation.\nCampo Band of Diegueno Mission Indians of the Campo Indian Reservation.\nCapitan Grande Band of Diegueno Mission Indians of California.\nEwiiaapaayp Band of Kumeyaay Indians.\nIipay Nation of Santa Ysabel.\nInaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation.\nJamul Indian Village of California.\nLa Jolla Band of Luiseno Indians.\nLa Posta Band of Diegueno Mission Indians of the La Posta Indian Reservation.\nLos Coyotes Band of Cahuilla and Cupeno Indians.\nManzanita Band of Diegueno Mission Indians of the Manzanita Reservation.\nMesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation.\nPala Band of Luiseno Mission Indians of the Pala Reservation.\nPauma Band of Luiseno Mission Indians of the Pauma and Yuima Reservation.\nRincon Band of Luiseno Mission Indians of the Rincon Reservation.\nSan Pasqual Band of Diegueno Mission Indians of California.\nSycuan Band of the Kumeyaay Nation.\nViejas (Baron Long) Group of Capitan Grande Band of Mission Indians.\nSan Francisco Bay Area, CA Nonattainment Marginal.\nAlameda County.\nContra Costa County.\nMarin County.\nNapa County.\nSan Francisco County.\nSan Mateo County.\nSanta Clara County.\nSolano County (part):\nPortion 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. \u0026 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.\nSonoma County (part):\nThat 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;\nthence 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.\nFederated Indians of Graton Rancheria.\nLytton Rancheria of California.\nSan Joaquin Valley, CA Nonattainment Extreme.\nFresno County.\nKern County (part):\nThat 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;\nthen 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.\nKings County.\nMadera County.\nMerced County.\nSan Joaquin County.\nStanislaus County.\nTulare County:\nBig Sandy Rancheria of Western Mono Indians of California.\nCold Springs Rancheria of Mono Indians of California.\nNorthfork Rancheria of Mono Indians of California.\nPicayune Rancheria of Chukchansi Indians of California.\nSanta Rosa Indian Community of the Santa Rosa Rancheria.\nTable Mountain Rancheria of California.\nTule River Indian Tribe of the Tule River Reservation.\nSan Luis Obispo (Eastern part), CA Nonattainment Marginal.\nSan Luis Obispo County (part):\nThat 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.\nSutter Buttes, CA Nonattainment Marginal.\nSutter County (part):\nThat portion of the Sutter Buttes mountain range at or above 2,000 feet in elevation.\nTuolumne County, CA Nonattainment Marginal.\nTuolumne County:\nChicken Ranch Rancheria of Me-Wuk Indians of California.\nTuolumne Band of Me-Wuk Indians of the Tuolumne Rancheria of California.\nTuscan Buttes, CA Nonattainment Marginal (Rural Transport).\nTehama County (part):\nThose portions of the immediate Tuscan Buttes area at or above 1,800 feet in elevation.\nVentura County, CA Nonattainment Serious.\nVentura County (part):\nThat part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands.\nMorongo Band of Mission Indians 4 Nonattainment Serious.\nPechanga Band of Luiseño Mission Indians of the Pechanga Reservation: Nonattainment 11/7/2022 Moderate.\nIncludes 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). 3\nRest of State:\nColusa County Attainment/Unclassifiable\nEastern Nevada County Attainment/Unclassifiable\nNevada County (part) remainder.\nEastern Riverside County Attainment/Unclassifiable\nRiverside County (part) remainder.\nGlenn County Attainment/Unclassifiable\nInyo County Attainment/Unclassifiable\nLake County 1/16/2018 Attainment/Unclassifiable\nLake Tahoe Air Basin Attainment/Unclassifiable\nEl Dorado County (part) remainder.\nPlacer County (part) remainder.\nNorth Central Coast Air Basin Attainment/Unclassifiable\nMonterey County.\nSan Benito County.\nSanta Cruz County.\nNorth Coast Air Basin Attainment/Unclassifiable\nDel Norte County 1/16/2018\nHumboldt County 1/16/2018\nMendocino County.\nSonoma County (part) remainder.\nTrinity County.\nNortheast Plateau Air Basin 1/16/2018 Attainment/Unclassifiable\nLassen County.\nModoc County.\nSiskiyou County.\nNortheastern Kern County Attainment/Unclassifiable\nKern County (part) remainder.\nNortheast San Bernardino County Attainment/Unclassifiable\nSan Bernardino County (part) remainder.\nNorthern Channel Islands. Attainment/Unclassifiable\nThe Channel Islands located in the South Central Coast Air Basin: Anacapa, San Miguel, San Nicholas, Santa Barbara, Santa Cruz, and Santa Rosa Islands.\nNorthern Great Basin Valleys Air Basin Attainment/Unclassifiable\nAlpine County.\nMono County.\nNorthern Mountain Counties Attainment/Unclassifiable\nPlumas County.\nSierra County.\nSanta Barbara County (part) remainder Attainment/Unclassifiable\nThat part of Santa Barbara County excluding the Channel Islands of San Miguel, Santa Barbara, Santa Cruz, and Santa Rosa Islands.\nShasta County Attainment/Unclassifiable\nSutter and Yuba Counties Attainment/Unclassifiable\nSutter County (part) remainder.\nYuba County.\nTehama County (part) remainder Attainment/Unclassifiable\nWestern San Luis Obispo County Attainment/Unclassifiable\nSan Luis Obispo County (part) remainder.\n1 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.\n2 This date is August 3, 2018, unless otherwise noted.\n3 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).\n4 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).\nCalifornia—2008 Lead NAAQS\nDesignated area Designation for the 2008 NAAQS a\nDate 1 Type\nLos Angeles County—South Coast Air Basin, CA:\nLos Angeles County (part) 12/31/2010 Nonattainment.\nThat 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.\nRest of State Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 December 31, 2011 unless otherwise noted.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES","Subpart C—Section 107 Attainment Status Designations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"4bb2f20a166f8e12f19e7519b3bd9445de039e061b46cebbcf7da0424875609d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.304","next":"us/40-cfr-81.306"},"notice":"GroundRules: Original legal text. Not legal advice."}