Cal. Code Regs. tit. 17, § 60205
Area
Designation
North Coast Air Basin
Del Norte County
Attainment
Sonoma County
Attainment
Trinity County
Attainment
Mendocino County
Attainment
Remainder of Air Basin
Nonattainment
San Francisco Bay Area Air Basin
Nonattainment
North Central Coast Air Basin
Nonattainment
South Central Coast Air Basin
Nonattainment
South Coast Air Basin
Nonattainment
San Diego Air Basin
Nonattainment
Northeast Plateau Air Basin
Siskiyou County
Attainment
Lassen and Modoc Counties
Unclassified
Sacramento Valley Air Basin
Shasta County
Attainment
Remainder of Air Basin
Nonattainment
San Joaquin Valley Air Basin
Nonattainment
Great Basin Valleys Air Basin
Nonattainment
Mojave Desert Air Basin
Nonattainment
Salton Sea Air Basin
Nonattainment
Mountain Counties Air Basin
El Dorado and Placer Counties
Nonattainment
Nevada, Plumas, and Sierra Counties
Unclassified
Amador County
Unclassified
Calaveras County
Nonattainment
Mariposa County Portion of Yosemite National Park
Nonattainment
Remainder of Mariposa and Tuolumne Counties
Unclassified
Lake County Air Basin
Attainment
Lake Tahoe Air Basin
Nonattainment
Note: Authority cited: Sections 39600, 39601 and 39608, Health and Safety Code. Reference: Section 39608, Health and Safety Code.
1. New section filed 10-6-89; operative 11-5-89 (Register 89, No. 43).
2. Amendment filed 6-25-92; operative 7-25-92 (Register 92, No. 26).
3. Amendment filed 11-30-93; operative 12-30-93 (Register 93, No. 49).
4. Amendment filed 9-22-97; operative 10-22-97 (Register 97, No. 39).
5. Amendment of section filed 7-17-98; operative 8-16-98 (Register 98, No. 29).
6. Amendment of section and new Note filed 8-26-99; operative 9-25-99 (Register 99, No. 35).
7. Amendment filed 6-23-2005; operative 7-23-2005 (Register 2005, No. 25).
8. Amendment filed 6-26-2007; operative 7-26-2007 (Register 2007, No. 26).
9. Amendment filed 4-10-2014; operative 7-1-2014 (Register 2014, No. 15).
10. Amendment filed 9-24-2018; operative 9-24-2018 pursuant to Government Code section 11343.4(b)(3) (Register 2018, No. 39).
11. Amendment of section and new Note filed 10-10-2022; operative 10-10-2022 pursuant to Government Code section 11343.4(b)(3) (Register 2022, No. 41).
12. Amendment filed 9-9-2025; operative 1-1-2026 (Register 2025, No. 37).