EPA Air · stack tests by county and year
Air-emissions stack tests in Durham County, North Carolina, 2025
- 7Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Durham County, North Carolina during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Durham County facility page.
Durham County, North Carolina, 2025
Air-emissions stack tests in Durham County, other years
Air-emissions stack tests recorded in Durham County, North Carolina, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-06 | NIEHS | Pass | State |
| 2025-09-11 | MERCK SHARP & DOHME LLC | Pass | State |
| 2025-07-11 | MERCK SHARP & DOHME LLC | Pass | State |
| 2025-04-18 | MP DURHAM, LLC (LANDFILL GAS-TO-ENERGY PROJECT) | Pass | State |
| 2025-02-20 | NORTH CAROLINA CENTRAL UNIVERSITY | Pass | State |
| 2025-01-24 | NIEHS | Pass | State |
| 2025-01-21 | ALEXANDRIA CENTER FOR LIFE SCIENCE DURHAM | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.