EPA Air · inspections by state, industry and year

Chemical manufacturing (NAICS 3256): inspections in Pennsylvania, 2025

• 17Inspections

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 Pennsylvania source whose primary industry code is NAICS 3256. A facility filing more than one industry code is counted under the first one on its record.

Chemical manufacturing (NAICS 3256) in Pennsylvania, other years

• 2026 7
• 2024 17
• 2023 17
• 2022 13
• 2021 13
• 2020 13
• 2019 12
• 2018 10
• 2017 12

Other industries in Pennsylvania, 2025

• Oil and gas extraction (NAICS 2111) 1,287
• Utilities (NAICS 2211) 591
• Waste management and remediation (NAICS 5622) 345
• Pipeline transportation (NAICS 4862) 314
• Petroleum and coal products manufacturing (NAICS 3241) 268
• Mining and quarrying (NAICS 2123) 217
• Plastics and rubber products manufacturing (NAICS 3261) 184
• Personal and laundry services (NAICS 8122) 163
• Hospitals (NAICS 6221) 161
• Merchant wholesalers, nondurable goods (NAICS 4247) 155
• Mining support (NAICS 2131) 133
• Primary metal manufacturing (NAICS 3315) 109
• Nonmetallic mineral product manufacturing (NAICS 3273) 109
• Utilities (NAICS 2213) 101
• Printing and related support (NAICS 3231) 99
• Chemical manufacturing (NAICS 3251) 94
• Repair and maintenance (NAICS 8111) 91
• Furniture and related product manufacturing (NAICS 3371) 90
• Fabricated metal product manufacturing (NAICS 3323) 86
• Educational services (NAICS 6113) 82
• Wood product manufacturing (NAICS 3219) 78
• Chemical manufacturing (NAICS 3254) 75
• Fabricated metal product manufacturing (NAICS 3328) 74
• Paper manufacturing (NAICS 3222) 72
• Personal and laundry services (NAICS 8123) 71
• Primary metal manufacturing (NAICS 3311) 69
• Primary metal manufacturing (NAICS 3312) 65
• Primary metal manufacturing (NAICS 3314) 62
• Food manufacturing (NAICS 3119) 58
• Transportation equipment manufacturing (NAICS 3362) 57
• Primary metal manufacturing (NAICS 3313) 56
• Nonmetallic mineral product manufacturing (NAICS 3272) 55
• Food manufacturing (NAICS 3111) 54
• Educational services (NAICS 6111) 54
• Fabricated metal product manufacturing (NAICS 3324) 50
• Food manufacturing (NAICS 3116) 49
• Paper manufacturing (NAICS 3221) 48
• Justice, public order and safety (NAICS 9221) 46
• Nonmetallic mineral product manufacturing (NAICS 3279) 44
• Pipeline transportation (NAICS 4869) 43
• Chemical manufacturing (NAICS 3252) 41
• Chemical manufacturing (NAICS 3259) 40
• Food manufacturing (NAICS 3112) 39
• Miscellaneous manufacturing (NAICS 3399) 39
• Machinery manufacturing (NAICS 3331) 37
• Food manufacturing (NAICS 3113) 35
• Electrical equipment and appliance manufacturing (NAICS 3359) 35
• Food manufacturing (NAICS 3118) 33
• Nonmetallic mineral product manufacturing (NAICS 3271) 33
• Wood product manufacturing (NAICS 3212) 32
• Machinery manufacturing (NAICS 3339) 31
• Merchant wholesalers, durable goods (NAICS 4239) 30
• Utilities (NAICS 2212) 30
• Wood product manufacturing (NAICS 3211) 29
• Professional, scientific and technical services (NAICS 5417) 29
• Fabricated metal product manufacturing (NAICS 3321) 27
• Warehousing and storage (NAICS 4931) 27
• Food manufacturing (NAICS 3114) 25
• Transportation equipment manufacturing (NAICS 3364) 25
• Fabricated metal product manufacturing (NAICS 3329) 24

Air-emissions inspections recorded in Pennsylvania, 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.