EPA Air · stack tests by state, industry and year

Primary metal manufacturing (NAICS 3315): stack tests in Ohio, 2026

• 22Stack 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 Ohio source whose primary industry code is NAICS 3315. A facility filing more than one industry code is counted under the first one on its record.

Primary metal manufacturing (NAICS 3315) in Ohio, other years

• 2025 23
• 2024 39
• 2023 45
• 2022 85
• 2021 43
• 2020 56
• 2019 16
• 2018 74
• 2017 68

Other industries in Ohio, 2026

• Oil and gas extraction (NAICS 2111) 488
• Pipeline transportation (NAICS 4862) 227
• Mining support (NAICS 2131) 156
• Utilities (NAICS 2212) 91
• Electrical equipment and appliance manufacturing (NAICS 3359) 75
• Primary metal manufacturing (NAICS 3311) 56
• Waste management and remediation (NAICS 5622) 54
• Nonmetallic mineral product manufacturing (NAICS 3271) 38
• Nonmetallic mineral product manufacturing (NAICS 3272) 36
• Utilities (NAICS 2211) 32
• Chemical manufacturing (NAICS 3251) 27
• Utilities (NAICS 2213) 19
• National security and international affairs (NAICS 9281) 14
• Plastics and rubber products manufacturing (NAICS 3262) 11
• Primary metal manufacturing (NAICS 3313) 11
• Warehousing and storage (NAICS 4931) 9
• Plastics and rubber products manufacturing (NAICS 3261) 8
• Transportation equipment manufacturing (NAICS 3361) 7
• Chemical manufacturing (NAICS 3255) 7
• Paper manufacturing (NAICS 3222) 6
• Food manufacturing (NAICS 3112) 6
• Nonmetallic mineral product manufacturing (NAICS 3274) 5
• Primary metal manufacturing (NAICS 3312) 5
• Educational services (NAICS 6113) 5
• Nonmetallic mineral product manufacturing (NAICS 3279) 5
• Petroleum and coal products manufacturing (NAICS 3241) 5
• Transportation equipment manufacturing (NAICS 3364) 5
• Chemical manufacturing (NAICS 3252) 4
• Fabricated metal product manufacturing (NAICS 3324) 4
• Wood product manufacturing (NAICS 3219) 3
• Professional, scientific and technical services (NAICS 5413) 3
• Repair and maintenance (NAICS 8113) 3
• Food manufacturing (NAICS 3115) 3
• Fabricated metal product manufacturing (NAICS 3328) 3
• Furniture and related product manufacturing (NAICS 3371) 3

Air-emissions stack tests recorded in Ohio, 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.