EPA Air · stack tests by state, industry and year
Mining and quarrying (NAICS 2123): stack tests in New Hampshire, 2025
- 3Stack 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 New Hampshire 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 New Hampshire, other years
Other industries in New Hampshire, 2025
- Utilities (NAICS 2211) 29
- Waste management and remediation (NAICS 5622) 4
- Nonmetallic mineral product manufacturing (NAICS 3274) 3
Air-emissions stack tests recorded in New Hampshire, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-07-16 | NEVILLE MATERIALS LLC | NEW BOSTON, Hillsborough, NH | Pass | State |
| 2025-06-03 | CONTINENTAL PAVING INC | CONCORD, Merrimack, NH | Pass | State |
| 2025-04-08 | COLD RIVER MATERIALS - WALPOLE (S&G) | WALPOLE, Cheshire, NH | 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.