EPA Air · stack tests by state, industry and year
Primary metal manufacturing (NAICS 3315): stack tests in Iowa, 2026
- 4Stack 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 Iowa 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 Iowa, other years
Other industries in Iowa, 2026
- Chemical manufacturing (NAICS 3251) 58
- Utilities (NAICS 2211) 27
- Food manufacturing (NAICS 3112) 15
- Publishing industries (NAICS 5112) 8
- Pipeline transportation (NAICS 4862) 8
- Primary metal manufacturing (NAICS 3311) 7
- Nonmetallic mineral product manufacturing (NAICS 3273) 5
- Chemical manufacturing (NAICS 3253) 4
- Professional, scientific and technical services (NAICS 5419) 4
- Administration of environmental programs (NAICS 9241) 4
- Food manufacturing (NAICS 3111) 3
- Food manufacturing (NAICS 3116) 3
Air-emissions stack tests recorded in Iowa, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-04-07 | HYCAST FOUNDRY — high-priority violation on file | FAIRFIELD, Jefferson, IA | Fail | State |
| 2026-03-19 | AMSTED RAIL COMPANY, INC | KEOKUK, Lee, IA | Pass | State |
| 2026-03-10 | CLOW VALVE COMPANY | OSKALOOSA, Mahaska, IA | Pass | State |
| 2026-03-10 | CLOW VALVE COMPANY | OSKALOOSA, Mahaska, IA | Pass | State |
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.