EPA Air · stack tests by state, industry and year
Mining and quarrying (NAICS 2123): stack tests in Colorado, 2020
- 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 2020 at a Colorado source whose primary industry code is NAICS 2123. A facility filing more than one industry code is counted under the first one on its record.
Mining and quarrying (NAICS 2123) in Colorado, other years
- 2025 3
Other industries in Colorado, 2020
- Oil and gas extraction (NAICS 2111) 331
- Utilities (NAICS 2211) 26
- Nonmetallic mineral product manufacturing (NAICS 3273) 14
- Pipeline transportation (NAICS 4862) 12
- National security and international affairs (NAICS 9281) 10
- Beverage and tobacco manufacturing (NAICS 3121) 8
- Petroleum and coal products manufacturing (NAICS 3241) 6
- Nonmetallic mineral product manufacturing (NAICS 3271) 6
- Waste management and remediation (NAICS 5622) 3
Air-emissions stack tests recorded in Colorado, 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-12-04 | ARCOSA LWB LLC - LIGHTWEIGHT - BOULDER — high-priority violation on file | SUPERIOR AREA, Jefferson, CO | Pass | State |
| 2020-11-12 | ARCOSA LWB LLC - LIGHTWEIGHT - BOULDER — high-priority violation on file | SUPERIOR AREA, Jefferson, CO | Fail | State |
| 2020-04-14 | NATURAL SODA LLC | RANGELY 22.5 MI. SE OF, Rio Blanco, CO | Pass | State |
| 2020-02-11 | NATURAL SODA LLC | RANGELY 22.5 MI. SE OF, Rio Blanco, CO | Fail | 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.