EPA Air · stack tests by state and year
Air-emissions stack tests in New Hampshire, 2026
- 29Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in New Hampshire during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in New Hampshire, 2026
New Hampshire, other years
Air-emissions stack tests recorded in New Hampshire, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-08-26 | DARTMOUTH PRINTING COMPANY | HANOVER, Grafton, NH | Pending | State |
| 2026-08-18 | GEORGIA-PACIFIC GYPSUM LLC | NEWINGTON, Rockingham, NH | Pending | State |
| 2026-08-03 | BRIDGEWATER POWER COMPANY, L.P. | BRIDGEWATER, Grafton, NH | Pending | State |
| 2026-08-03 | BRIDGEWATER POWER COMPANY, L.P. | BRIDGEWATER, Grafton, NH | Pending | State |
| 2026-07-28 | NEWINGTON ENERGY | NEWINGTON, Rockingham, NH | Pending | State |
| 2026-07-28 | NEWINGTON ENERGY | NEWINGTON, Rockingham, NH | Pending | State |
| 2026-07-22 | BURGESS BIOPOWER | BERLIN, Coos, NH | Pass | State |
| 2026-07-15 | GSP NEWINGTON LLC | NEWINGTON, Rockingham, NH | Pending | State |
| 2026-07-10 | AJ NONWOVENS-HAMPTON, LLC | HAMPTON, Rockingham, NH | Pending | State |
| 2026-06-25 | WHEELABRATOR CONCORD COMPANY, L.P. | CONCORD, Merrimack, NH | Pending | State |
| 2026-06-24 | WHEELABRATOR CONCORD COMPANY, L.P. | CONCORD, Merrimack, NH | Pending | State |
| 2026-06-17 | HITCHINER MANUFACTURING CO., INC. | MILFORD, Hillsborough, NH | Pending | State |
| 2026-06-09 | MANCHESTER, CITY OF - WATER TREATMENT PLANT | MANCHESTER, Hillsborough, NH | Pass | State |
| 2026-05-28 | GRANITE RIDGE ENERGY, LLC | LONDONDERRY, Rockingham, NH | Incomplete | State |
| 2026-05-27 | GRANITE RIDGE ENERGY, LLC | LONDONDERRY, Rockingham, NH | Incomplete | State |
| 2026-05-13 | CAN-ONE (USA), INC. D/B/A KJ CAN USA | NASHUA, Hillsborough, NH | Pass | State |
| 2026-05-05 | GEORGIA-PACIFIC GYPSUM LLC | NEWINGTON, Rockingham, NH | N/A | State |
| 2026-04-16 | WHEELABRATOR CONCORD COMPANY, L.P. | CONCORD, Merrimack, NH | Pass | State |
| 2026-04-15 | WHEELABRATOR CONCORD COMPANY, L.P. | CONCORD, Merrimack, NH | Pass | State |
| 2026-03-24 | NE RENEWABLE POWER WHITEFIELD | WHITEFIELD, Coos, NH | Pass | State |
| 2026-03-19 | RJ CHIPPING ENTERPRISES, INC. | SHELBURNE, Coos, NH | Pass | State |
| 2026-03-18 | NE RENEWABLE POWER WHITEFIELD | WHITEFIELD, Coos, NH | Pass | State |
| 2026-03-18 | RJ CHIPPING ENTERPRISES, INC. | SHELBURNE, Coos, NH | Pass | State |
| 2026-03-18 | RJ CHIPPING ENTERPRISES, INC. | SHELBURNE, Coos, NH | Pass | State |
| 2026-03-17 | RJ CHIPPING ENTERPRISES, INC. | SHELBURNE, Coos, NH | Pass | State |
| 2026-02-25 | UNIVERSITY OF NEW HAMPSHIRE | DURHAM, Strafford, NH | Pass | State |
| 2026-02-18 | DARTMOUTH COLLEGE | HANOVER, Grafton, NH | Pass | State |
| 2026-02-18 | CONCORD EXPANSION COMPRESSOR STATION | PELHAM, Hillsborough, NH | Pass | State |
| 2026-02-10 | GSP NEWINGTON LLC | NEWINGTON, Rockingham, NH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.