EPA Air · by state
Air-emissions sources in California
- 2,144Facilities
By emissions classification in California
High-priority violations in California
238 sources in California carry a current high-priority Clean Air Act violation.
Counties in California
- Alameda County 87
- Amador County 5
- Butte County 7
- Colusa County 7
- Contra Costa County 81
- El Dorado County 8
- Fresno County 55
- Glenn County 4
- Humboldt County 9
- Imperial County 41
- Kern County 164
- Kings County 23
- Lassen County 3
- Los Angeles County 390
- Madera County 22
- Marin County 5
- Mendocino County 3
- Merced County 23
- Modoc County 4
- Monterey County 14
- Napa County 5
- Orange County 110
- Placer County 42
- Riverside County 65
- Sacramento County 97
- San Bernardino County 123
- San Diego County 126
- San Francisco County 36
- San Joaquin County 74
- San Luis Obispo County 16
- San Mateo County 34
- Santa Barbara County 136
- Santa Clara County 51
- Santa Cruz County 5
- Shasta County 22
- Solano County 31
- Sonoma County 23
- Stanislaus County 40
- Sutter County 8
- Tehama County 11
- Tulare County 19
- Tuolumne County 4
- Undetermined County 32
- Ventura County 41
- Yolo County 16
- Yuba County 8
Industries in California
Sources are grouped by the first industry code on the facility record.
- NAICS 9999 343
- Oil and gas extraction (NAICS 2111) 216
- Utilities (NAICS 2211) 209
- Waste management and remediation (NAICS 5622) 75
- Petroleum and coal products manufacturing (NAICS 3241) 63
- Repair and maintenance (NAICS 8111) 52
- Fabricated metal product manufacturing (NAICS 3328) 45
- Merchant wholesalers, nondurable goods (NAICS 4247) 39
- Utilities (NAICS 2213) 39
- Hospitals (NAICS 6221) 35
- Plastics and rubber products manufacturing (NAICS 3261) 35
- Beverage and tobacco manufacturing (NAICS 3121) 32
- Printing and related support (NAICS 3231) 29
- Miscellaneous manufacturing (NAICS 3399) 28
- Paper manufacturing (NAICS 3222) 26
- Transportation equipment manufacturing (NAICS 3364) 24
- Food manufacturing (NAICS 3114) 23
- Waste management and remediation (NAICS 5629) 23
- Pipeline transportation (NAICS 4861) 22
- Pipeline transportation (NAICS 4862) 21
- Food manufacturing (NAICS 3118) 21
- National security and international affairs (NAICS 9281) 21
- Mining and quarrying (NAICS 2123) 21
- Wood product manufacturing (NAICS 3219) 19
- Nonmetallic mineral product manufacturing (NAICS 3273) 18
- Fabricated metal product manufacturing (NAICS 3324) 18
- Specialty trade contractors (NAICS 2389) 17
- Educational services (NAICS 6113) 16
- Chemical manufacturing (NAICS 3251) 15
- Furniture and related product manufacturing (NAICS 3372) 15
- Chemical manufacturing (NAICS 3255) 14
- Computer and electronic product manufacturing (NAICS 3344) 13
- Food manufacturing (NAICS 3119) 13
- Chemical manufacturing (NAICS 3252) 13
- Justice, public order and safety (NAICS 9221) 13
- Chemical manufacturing (NAICS 3254) 12
- Transportation equipment manufacturing (NAICS 3366) 12
- Primary metal manufacturing (NAICS 3315) 12
- Primary metal manufacturing (NAICS 3313) 11
- Agriculture and forestry support (NAICS 1151) 11
- Warehousing and storage (NAICS 4931) 11
- Furniture and related product manufacturing (NAICS 3371) 11
- Fishing, hunting and trapping (NAICS 1141) 11
- Nonmetallic mineral product manufacturing (NAICS 3272) 10
- Food manufacturing (NAICS 3115) 10
- Fabricated metal product manufacturing (NAICS 3323) 10
- Pipeline transportation (NAICS 4869) 10
- Miscellaneous manufacturing (NAICS 3391) 10
- NAICS 4543 10
- Motor vehicle and parts dealers (NAICS 4411) 10
- Personal and laundry services (NAICS 8123) 9
- Nonmetallic mineral product manufacturing (NAICS 3271) 9
- Space research and technology (NAICS 9271) 9
- Fabricated metal product manufacturing (NAICS 3321) 9
- Building construction (NAICS 2361) 8
- Building construction (NAICS 2362) 8
- Electrical equipment and appliance manufacturing (NAICS 3359) 8
- Chemical manufacturing (NAICS 3253) 8
- Transportation equipment manufacturing (NAICS 3362) 8
- Machinery manufacturing (NAICS 3333) 7
- Fabricated metal product manufacturing (NAICS 3327) 7
- Computer and electronic product manufacturing (NAICS 3345) 7
- Machinery manufacturing (NAICS 3339) 7
- Nonmetallic mineral product manufacturing (NAICS 3279) 7
- Executive and legislative government (NAICS 9211) 6
- Chemical manufacturing (NAICS 3259) 6
- Fabricated metal product manufacturing (NAICS 3329) 6
- Machinery manufacturing (NAICS 3335) 6
- NAICS 4521 6
- Nonmetallic mineral product manufacturing (NAICS 3274) 6
- Plastics and rubber products manufacturing (NAICS 3262) 6
- Administration of environmental programs (NAICS 9241) 6
- Textile mills (NAICS 3133) 5
- Crop production (NAICS 1113) 5
- Food manufacturing (NAICS 3112) 5
- Waste management and remediation (NAICS 5621) 5
- Support activities for transportation (NAICS 4881) 5
- Electrical equipment and appliance manufacturing (NAICS 3353) 5
- Crop production (NAICS 1112) 4
- Mining and quarrying (NAICS 2122) 4
Air inspections in California, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 1,920
- 2025 2,487
- 2024 2,773
- 2023 2,852
- 2022 2,071
- 2021 2,109
- 2020 2,180
- 2019 2,688
- 2018 1,888
- 2017 2,222
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| THE TERMO COMPANY | Major source | No |
| THE WINE GROUP | Major source | No |
| THE WINE GROUP LLC - GONZALES WINERY (PREV. CONSTELLATION BRANDS US OPERATIONS) | Major source | No |
| THE WINE GROUP, INC | Major source | No |
| THE WINE GRP LLC DBA ALAMADEN-MADERA | Major source | No |
| THERIEN & CO INC | Minor source | No |
| THIARA ORCHARDS | Major source | No |
| THORO PACKAGING | Major source | No |
| THOROCK METALS | Minor source | No |
| THREE RIVERS LEVEE IMPROVEMENT | Minor source | No |
| THUMS LONG BEACH CO | Major source | Yes |
| THUMS LONG BEACH CO UNIT #03 | Minor source | No |
| TIDELANDS OIL PRODUCTION CO | Major source | No |
| TIDELANDS OIL PRODUCTION COMPANY ETAL | Minor source | No |
| TIGER SHARK GOLF | Minor source | No |
| TIN, INC DBA INTERNATIONAL PAPER | Not applicable | No |
| TIODIZE | Minor source | No |
| TIYODA | Minor source | No |
| TNH AUTO REPAIR | Minor source | No |
| TOLAND ROAD LANDFILL | Major source | Yes |
| TOMA-TEK | Minor source | No |
| TONOGA INC, TACONIC DBA | Major source | No |
| TOOL NETWORK INC | Minor source | No |
| TOPPER PLASTICS INC | Major source | No |
| TORRANCE LOGISTICS COMPANY LLC | Major source | No |
| TORRANCE LOGISTICS COMPANY, LLC | Major source | No |
| TORRANCE REFINING COMPANY LLC | Major source | No |
| TORRANCE VALLEY PIPELINE CO LLC | Synthetic minor source | No |
| TORROT NA INC. | No | |
| TOWNE FORD | Minor source | Yes |
| TOYON LANDFILL GAS CONVERSION LLC | Major source | No |
| TOYOTA AUTO PARTS | Minor source | No |
| TOYOTA LEXUS | Minor source | No |
| TOYOTA LOGISTICS SERVICES INC | Minor source | No |
| TOYOTA TRUCK & SUV PARTS | Minor source | No |
| TOYS R US | Minor source | No |
| TOYS R US | Minor source | No |
| TRADER JOE'S | Minor source | No |
| TRAIL RITE INC | Major source | No |
| TRANSCONTINENTAL ONTARIO INC | No | |
| TRANSMONTAIGNE OPERATING LP | Major source | No |
| TRAVIS AFB | Synthetic minor source | No |
| TRC CYPRESS GROUP LLC | Minor source | No |
| TRC OPERATING - HEAVY OIL | Major source | No |
| TREEHOUSE CALIFORNIA ALMONDS LLC | Minor source | No |
| TREND MANOR FURNITURE MFG CO | Major source | No |
| TREND OFFSET PRINTING SERVICES INC | Major source | Yes |
| TREND TECHNOLOGIES LLC | Minor source | No |
| TREND TECHNOLOGIES LLC | Minor source | No |
| TRENDWEST INC | Minor source | No |
| TRI-ALLOY GROUP, LLC | Minor source | No |
| TRI-CITIES RECYCLING | Major source | Yes |
| TRI-COM REFRIGERATION | Minor source | No |
| TRICOR REFINING, LLC | Major source | Yes |
| TRIG AEROSPACE | Minor source | No |
| TRIUMPH AEROSTRUCTURES, LLC | Minor source | No |
| TROJAN BATTERY CO | Minor source | No |
| TROJAN BATTERY CO | Minor source | No |
| TRUCK ACC GRP DBA LEER WEST | Major source | No |
| TRUCKEE 76/SIERRA CAR CARE | Minor source | No |
| TRUE BAR AUTO SERVICE | Minor source | No |
| TRUSTEES OF CSU & CSUCI SITE AUTHORITY | Major source | No |
| TST INC | Major source | No |
| TUFF BOY, INC. | Synthetic minor source | No |
| TULARE CITY WASTE WATER PLANT | Major source | Yes |
| TULARE LAKE COMPOST | Major source | No |
| TURLOCK IRRIGATION DIST-WALNUT ENERGY | Major source | No |
| TURLOCK IRRIGATION DISTRICT | Major source | No |
| TXI RIVERSIDE CEMENT CO - CRESTMORE PLT | Major source | No |
| TYLER REFRIGERATION | Minor source | Yes |
| TYPECRAFT INC | Minor source | No |
| U S INTEC, INC | Synthetic minor source | No |
| U-PULL & SAVE | Minor source | No |
| U.S. BATTERY MFG. CO. | Minor source | No |
| U.S. GOVT, DEPT OF NAVY | Major source | No |
| UBS PRINTING GRP (UNITED RUBIDOUX) | Major source | No |
| UCD MEDICAL CENTER | Major source | No |
| UCSD | Minor source | No |
| UCSF/PARNASSUS | Synthetic minor source | No |
| UKIAH VALLEY MEDICAL CENTER | Minor source | No |
| ULTRAMAR INC | Major source | No |
| ULTRAMAR INC | Major source | No |
| ULTRAMAR, INC | Major source | No |
| UNION PACIFIC RAILROAD | Minor source | No |
| UNITED AIRLINES INC | Major source | No |
| UNITED AIRLINES, SF MAINTENANCE CENTER | Major source | Yes |
| UNITED STATES COLD STORAGE | Minor source | No |
| UNITED STATES NAVY | Minor source | No |
| UNITED STATES PIPE & FOUNDRY ( US PIPE ) | Major source | Yes |
| UNIV CAL IRVINE (NSR USE ONLY) | Major source | No |
| UNIV OF SO CAL (EIS & NSR USE ONLY) | Major source | No |
| UNIVERSAL CITY STUDIOS LLC | Major source | No |
| UNIVERSITY OF CA- BERKELEY | Synthetic minor source | Yes |
| UNIVERSITY OF CA- CHEMISTRY | Minor source | No |
| UNIVERSITY OF CA- DAVIS | Major source | No |
| UNIVERSITY OF CALIFORNIA SANTA BARBARA (UCSB) | Major source | Yes |
| UNIVERSITY OF CALIFORNIA, LOS ANGELES | Major source | No |
| UNIVERSITY OF SOUTHERN CALIFORNIA HEALTH | Major source | No |
| UNLIMITED PERFORMANCE PRODUCTS | Major source | Yes |
| UNOCAL EW CORP (ESPARZA'S) | Minor source | No |
Figures from EPA’s ICIS-AIR download.