EPA Air · stack tests by state, industry and year

Nonmetallic mineral product manufacturing (NAICS 3273): stack tests in Kentucky, 2026

• 10Stack 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 2026 at a Kentucky source whose primary industry code is NAICS 3273. A facility filing more than one industry code is counted under the first one on its record.

Nonmetallic mineral product manufacturing (NAICS 3273) in Kentucky, other years

• 2025 9
• 2024 5
• 2023 7
• 2022 11
• 2021 5
• 2020 7
• 2019 7
• 2018 6
• 2017 3

Other industries in Kentucky, 2026

• Primary metal manufacturing (NAICS 3313) 14
• Utilities (NAICS 2211) 14
• Pipeline transportation (NAICS 4862) 7
• Chemical manufacturing (NAICS 3252) 5
• Primary metal manufacturing (NAICS 3311) 4
• Chemical manufacturing (NAICS 3259) 3
• Electrical equipment and appliance manufacturing (NAICS 3359) 3

Air-emissions stack tests recorded in Kentucky, 2026

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.