EPA Air · stack tests by state, industry and year

Nonmetallic mineral product manufacturing (NAICS 3279): stack tests in North Carolina, 2025

• 3Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a North Carolina source whose primary industry code is NAICS 3279. A facility filing more than one industry code is counted under the first one on its record.

Nonmetallic mineral product manufacturing (NAICS 3279) in North Carolina, other years

• 2023 6
• 2021 5
• 2017 4

Other industries in North Carolina, 2025

• Utilities (NAICS 2211) 53
• Waste management and remediation (NAICS 5622) 36
• Petroleum and coal products manufacturing (NAICS 3241) 17
• Mining and quarrying (NAICS 2123) 12
• Chemical manufacturing (NAICS 3251) 10
• Utilities (NAICS 2213) 10
• Pipeline transportation (NAICS 4862) 9
• Chemical manufacturing (NAICS 3254) 9
• Chemical manufacturing (NAICS 3253) 9
• Paper manufacturing (NAICS 3221) 8
• Electrical equipment and appliance manufacturing (NAICS 3359) 7
• Food manufacturing (NAICS 3112) 7
• Nonmetallic mineral product manufacturing (NAICS 3272) 7
• Utilities (NAICS 2212) 7
• Educational services (NAICS 6113) 6
• Wood product manufacturing (NAICS 3219) 5
• Primary metal manufacturing (NAICS 3315) 5
• Plastics and rubber products manufacturing (NAICS 3261) 5
• Hospitals (NAICS 6221) 5
• Food manufacturing (NAICS 3116) 4
• Wood product manufacturing (NAICS 3212) 4
• Administration of environmental programs (NAICS 9241) 3
• Wood product manufacturing (NAICS 3211) 3

Air-emissions stack tests recorded in North Carolina, 2025

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