EPA Air · stack tests by state, industry and year
Nonmetallic mineral product manufacturing (NAICS 3274): stack tests in Colorado, 2026
- 6Stack 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 Colorado source whose primary industry code is NAICS 3274. A facility filing more than one industry code is counted under the first one on its record.
Nonmetallic mineral product manufacturing (NAICS 3274) in Colorado, other years
- 2021 8
Other industries in Colorado, 2026
- Oil and gas extraction (NAICS 2111) 110
- Utilities (NAICS 2211) 21
- Nonmetallic mineral product manufacturing (NAICS 3273) 12
- National security and international affairs (NAICS 9281) 10
- Nonmetallic mineral product manufacturing (NAICS 3271) 7
- Waste management and remediation (NAICS 5622) 3
Air-emissions stack tests recorded in Colorado, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-07-23 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | Pass | State |
| 2026-07-23 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | Pass | State |
| 2026-07-23 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | Pass | State |
| 2026-07-22 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | Pass | State |
| 2026-07-22 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | Pass | State |
| 2026-07-21 | AMERICAN GYPSUM COMPANY | GYPSUM, Eagle, CO | 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.