EPA Air · inspections by state, industry and year

NAICS 9999: inspections in California, 2025

• 210Inspections

A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Each row is one inspection recorded during 2025 at a California source whose primary industry code is NAICS 9999. A facility filing more than one industry code is counted under the first one on its record.

NAICS 9999 in California, other years

• 2026 172
• 2024 234
• 2023 221
• 2022 183
• 2021 215
• 2020 182
• 2019 249
• 2018 178
• 2017 190

Other industries in California, 2025

• Oil and gas extraction (NAICS 2111) 504
• Utilities (NAICS 2211) 322
• Petroleum and coal products manufacturing (NAICS 3241) 174
• Beverage and tobacco manufacturing (NAICS 3121) 134
• Waste management and remediation (NAICS 5622) 125
• Merchant wholesalers, nondurable goods (NAICS 4247) 101
• Nonmetallic mineral product manufacturing (NAICS 3272) 101
• Utilities (NAICS 2213) 66
• Nonmetallic mineral product manufacturing (NAICS 3279) 52
• Food manufacturing (NAICS 3114) 49
• Pipeline transportation (NAICS 4861) 41
• Pipeline transportation (NAICS 4862) 35
• Plastics and rubber products manufacturing (NAICS 3261) 34
• Fabricated metal product manufacturing (NAICS 3324) 27
• Food manufacturing (NAICS 3115) 27
• Food manufacturing (NAICS 3116) 23
• Mining and quarrying (NAICS 2123) 21
• Paper manufacturing (NAICS 3222) 20
• Justice, public order and safety (NAICS 9221) 20
• National security and international affairs (NAICS 9281) 18
• Food manufacturing (NAICS 3111) 17
• Fabricated metal product manufacturing (NAICS 3323) 16
• Food manufacturing (NAICS 3119) 15
• Fabricated metal product manufacturing (NAICS 3328) 15
• Nonmetallic mineral product manufacturing (NAICS 3273) 14
• Crop production (NAICS 1113) 13
• Hospitals (NAICS 6221) 13
• Agriculture and forestry support (NAICS 1151) 12
• Chemical manufacturing (NAICS 3251) 12
• NAICS 4543 11
• Animal production (NAICS 1121) 10
• Transportation equipment manufacturing (NAICS 3366) 10
• Chemical manufacturing (NAICS 3252) 9
• Transportation equipment manufacturing (NAICS 3364) 9
• Miscellaneous manufacturing (NAICS 3399) 9
• Repair and maintenance (NAICS 8111) 7
• Mining support (NAICS 2131) 7
• Chemical manufacturing (NAICS 3253) 7
• Pipeline transportation (NAICS 4869) 7
• Waste management and remediation (NAICS 5629) 7
• Warehousing and storage (NAICS 4931) 7
• Primary metal manufacturing (NAICS 3314) 6
• Support activities for transportation (NAICS 4881) 6
• Crop production (NAICS 1112) 6
• Furniture and related product manufacturing (NAICS 3372) 5
• Building construction (NAICS 2362) 5
• Paper manufacturing (NAICS 3221) 5
• Plastics and rubber products manufacturing (NAICS 3262) 5
• Specialty trade contractors (NAICS 2382) 4
• Food manufacturing (NAICS 3112) 4
• Administrative and support services (NAICS 5617) 4
• Executive and legislative government (NAICS 9211) 4
• Furniture and related product manufacturing (NAICS 3371) 4
• Computer and electronic product manufacturing (NAICS 3345) 4
• Professional, scientific and technical services (NAICS 5419) 4
• Waste management and remediation (NAICS 5621) 4
• Machinery manufacturing (NAICS 3339) 4
• Mining and quarrying (NAICS 2122) 3
• Heavy and civil engineering construction (NAICS 2371) 3
• Animal production (NAICS 1123) 3

Air-emissions inspections recorded in California, 2025

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.