EPA Air · stack tests by county and year
Air-emissions stack tests in Johnston County, North Carolina, 2026
- 3Stack 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 Johnston County, North Carolina during 2026. 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 Johnston County facility page.
Johnston County, North Carolina, 2026
- Inspections 121
Air-emissions stack tests in Johnston County, other years
Air-emissions stack tests recorded in Johnston County, North Carolina, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-09-02 | GRIFOLS THERAPEUTICS LLC | Pass | State |
| 2026-07-20 | APC, INC. - SELMA | Pending | State |
| 2026-01-15 | GRIFOLS THERAPEUTICS LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.