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 |
|---|---|---|
| LANGE TWINS WINERY | Major source | No |
| LARIO GAS & OIL (GAS EXTRACTION WELL) | Minor source | No |
| LARKSPUR ENERGY (FORMERLY WILDFLOWER) | Major source | No |
| LARKSPUR LANDING | Minor source | No |
| LAWRENCE BERKELEY LAB | Minor source | No |
| LAWRENCE LIVERMORE NATIONAL LAB | Minor source | No |
| LAX IN FLITE SERVICES LLC | Minor source | No |
| LAXFUEL CORP | Major source | No |
| LEADING EDGE AVIATION SERVICES | Minor source | No |
| LEHIGH S.W. CEMENT CO. | Major source | No |
| LEHIGH SOUTHWEST CEMENT COMPANY | Major source | Yes |
| LEHIGH SOUTHWEST-REDDING | Major source | No |
| LEPRINO FOODS | Synthetic minor source | No |
| LESTER LITHOGRAPH INC | Major source | No |
| LHOIST NORTH AMERICA OF ARIZONA, INC. | Major source | No |
| LIBERTY PACKING CO. | Synthetic minor source | No |
| LIBERTY VEGETABLE OIL COMPANY | Minor source | No |
| LIFOAM INDUSTRIES LLC | Major source | No |
| LIGHT METALS INC | Major source | No |
| LINCOLN SILOS | Minor source | No |
| LINN OPERATING INC | Major source | Yes |
| LINN OPERATING INC | Major source | Yes |
| LINN OPERATING INC | Major source | No |
| LINN OPERATING INC | Major source | No |
| LINN WESTERN OPERATING INC | Minor source | No |
| LITHOGRAPHIX INC | Major source | No |
| LIVE OAK LIMITED | Major source | No |
| LKQ OF CENTRAL CALIFORNIA | Minor source | No |
| LMDD ENTERPRISES-DIXON HARD CHROME | Minor source | No |
| LOCKHEED MARTIN AERONAUTICAL COMPANY | Major source | No |
| LOCKHEED MARTIN CORPORATION | Synthetic minor source | Yes |
| LODI GAS STORAGE LLC | Major source | No |
| LODI VINTNERS INC | Major source | Yes |
| LOMA LINDA UNIVERSITY | Major source | No |
| LOMPOC SANITARY LANDFILL | Major source | Yes |
| LONG BEACH GENERATION LLC | Major source | No |
| LONG BEACH MEMORIAL MEDICAL CENTER | Major source | No |
| LONG BEACH SERRF PROJECT | Major source | No |
| LOS ANGELES COLD STORAGE CO | Minor source | No |
| LOS ANGELES DEPT OF WATER & POWER | Minor source | No |
| LOS ANGELES WEST TERMINAL FUEL CORP | Minor source | No |
| LOS ESTEROS CRITICAL ENERGY FACILITY | Major source | No |
| LOS GATOS TOMATO PRODUCTS | Major source | No |
| LOS MEDANOS ENERGY CENTER | Major source | Yes |
| LOS RIOS COMMUNITY COLLEGE DISTRICT | Minor source | No |
| LOUIE'S WRECKING YARD | Minor source | No |
| LQ VILLAGE APTS/HOMES (HOUSING DEVELOP.) | Minor source | No |
| LUNDAY-THAGARD CO DBA WORLD OIL REFINING | Major source | Yes |
| LUXURY AUTO DISMANTLING | Minor source | No |
| LVI ENVIRONMENTAL | Minor source | No |
| M & J DESIGN CORPORATION | Major source | No |
| M & R COMPANY | Synthetic minor source | No |
| M B SPORTS | Synthetic minor source | No |
| M FERNANDEZ TOW & RECOVERY | Minor source | No |
| M G AUTO DISMANTLER | Minor source | No |
| MACPHERSON OIL CO - HEAVY OIL | Major source | No |
| MADDOX FARMS | Major source | Yes |
| MADERA COOPERATIVE GIN, INC. | Minor source | No |
| MADSEN'S AUTO AIR | Minor source | No |
| MAG BAY YACHTS | Minor source | No |
| MALAGA POWER, LLC | Minor source | No |
| MANDALAY GENERATING STATION | Major source | No |
| MARBLE PALACE | Minor source | No |
| MARCEL ELECTRONICS | Minor source | No |
| MARKSTEIN SALES COMPANY | Minor source | No |
| MARRIOT HOTEL | Minor source | No |
| MARRIOTT AIRPORT HOTEL | Minor source | No |
| MARTIN CONTAINER SERVICE | Minor source | No |
| MARTIN FURNITURE | Minor source | No |
| MARTIN HEIN RANCH COMPANY - PA2 | Major source | No |
| MARTIN LUTHER KING JR MEDICAL CAMPUS | Major source | No |
| MARTINEZ COGEN LIMITED PARTNERSHIP | Major source | Yes |
| MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) | Major source | Yes |
| MASK-OFF COMPANY, INC | Major source | No |
| MASTER PLATING | Minor source | No |
| MATRIX OIL CORP. | Major source | Yes |
| MAXTRADE LLC | No | |
| MC CANN'S ENGINEERING & MFG CO | Minor source | No |
| MC CONNELL CABINETS INC | Major source | No |
| MC DOWELL & CRAIG MFG. CO. | Major source | No |
| MC KITTRICK LTD | Major source | No |
| MCALINDON'S AUTO | Minor source | No |
| MCCLELLAN BUSINESS PARK | Synthetic minor source | Yes |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCDONALD RESTAURANT | Minor source | No |
| MCGRATH PEAKER GENERATING STATION | Minor source | No |
| MCGUIRE FURNITURE COMPANY | Synthetic minor source | No |
| MCMANIS FAMILY VINEYARDS | Major source | No |
| MCP FOODS INC | Major source | No |
| MEADWESTVACO | Minor source | No |
| MEADWESTVACO | Minor source | No |
| MEDTRONIC MINIMED, INC | Major source | No |
Figures from EPA’s ICIS-AIR download.