EPA Air · stack tests by state, industry and year

Primary metal manufacturing (NAICS 3315): stack tests in Ohio, 2025

• 23Stack 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 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

• 2026 22
• 2024 39
• 2023 45
• 2022 85
• 2021 43
• 2020 56
• 2019 16
• 2018 74
• 2017 68

Other industries in Ohio, 2025

• Oil and gas extraction (NAICS 2111) 821
• Nonmetallic mineral product manufacturing (NAICS 3279) 164
• Pipeline transportation (NAICS 4862) 163
• Mining support (NAICS 2131) 148
• Utilities (NAICS 2211) 100
• Waste management and remediation (NAICS 5622) 99
• Petroleum and coal products manufacturing (NAICS 3241) 95
• Electrical equipment and appliance manufacturing (NAICS 3359) 85
• Utilities (NAICS 2212) 80
• Chemical manufacturing (NAICS 3251) 58
• Primary metal manufacturing (NAICS 3311) 34
• Food manufacturing (NAICS 3119) 26
• Nonmetallic mineral product manufacturing (NAICS 3271) 25
• Utilities (NAICS 2213) 20
• Nonmetallic mineral product manufacturing (NAICS 3272) 19
• Primary metal manufacturing (NAICS 3313) 19
• Nonmetallic mineral product manufacturing (NAICS 3273) 15
• Chemical manufacturing (NAICS 3255) 15
• Crop production (NAICS 1114) 15
• Professional, scientific and technical services (NAICS 5413) 12
• Primary metal manufacturing (NAICS 3314) 12
• Printing and related support (NAICS 3231) 12
• Fabricated metal product manufacturing (NAICS 3328) 11
• Educational services (NAICS 6113) 11
• Chemical manufacturing (NAICS 3252) 11
• Heavy and civil engineering construction (NAICS 2371) 9
• Mining and quarrying (NAICS 2123) 9
• Paper manufacturing (NAICS 3222) 8
• Hospitals (NAICS 6221) 7
• Furniture and related product manufacturing (NAICS 3371) 6
• Food manufacturing (NAICS 3118) 6
• Transportation equipment manufacturing (NAICS 3363) 5
• Merchant wholesalers, nondurable goods (NAICS 4247) 5
• Transportation equipment manufacturing (NAICS 3361) 5
• Plastics and rubber products manufacturing (NAICS 3261) 4
• Repair and maintenance (NAICS 8113) 4
• Fabricated metal product manufacturing (NAICS 3321) 4
• Waste management and remediation (NAICS 5629) 4
• Chemical manufacturing (NAICS 3253) 3
• Professional, scientific and technical services (NAICS 5417) 3
• Food manufacturing (NAICS 3111) 3
• Paper manufacturing (NAICS 3221) 3
• Computer and electronic product manufacturing (NAICS 3344) 3
• Food manufacturing (NAICS 3115) 3
• Food manufacturing (NAICS 3116) 3
• Machinery manufacturing (NAICS 3339) 3
• Plastics and rubber products manufacturing (NAICS 3262) 3

Air-emissions stack tests recorded in Ohio, 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.