EPA Air · stack tests by county and year
Air-emissions stack tests in Chatham County, North Carolina, 2025
- 5Stack 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 Chatham 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 Chatham County facility page.
Chatham County, North Carolina, 2025
- Inspections 56
Air-emissions stack tests in Chatham County, other years
Air-emissions stack tests recorded in Chatham County, North Carolina, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-15 | 3M PITTSBORO - INDUSTRIAL MINERAL PRODUCTS | Pass | State |
| 2025-09-04 | S. T. WOOTEN - PEA RIDGE ASPHALT PLANT | Pass | State |
| 2025-08-28 | TRUEROCK MATERIALS - SILER CITY PLANT | Pass | State |
| 2025-07-03 | ARAUCO NORTH AMERICA, INC. | Pass | State |
| 2025-04-08 | 3M PITTSBORO - INDUSTRIAL MINERAL PRODUCTS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register and stack tests in Chatham county, NC, in 2025. Stack tests recorded in 2025: 5.