EPA Air · stack tests by state, industry and year
Wood product manufacturing (NAICS 3211): stack tests in Washington, 2026
- 4Stack 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 2026 at a Washington source whose primary industry code is NAICS 3211. A facility filing more than one industry code is counted under the first one on its record.
Wood product manufacturing (NAICS 3211) in Washington, other years
Other industries in Washington, 2026
- Paper manufacturing (NAICS 3221) 18
- Petroleum and coal products manufacturing (NAICS 3241) 5
- Pipeline transportation (NAICS 4862) 3
- Chemical manufacturing (NAICS 3253) 3
Air-emissions stack tests recorded in Washington, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-03-18 | HAMPTON LUMBER MILLS-WASHINGTON INC | DARRINGTON, Snohomish, WA | Pass | Local |
| 2026-03-18 | HAMPTON LUMBER MILLS-WASHINGTON INC | DARRINGTON, Snohomish, WA | Pass | Local |
| 2026-03-18 | HAMPTON LUMBER MILLS-WASHINGTON INC | DARRINGTON, Snohomish, WA | Pass | Local |
| 2026-03-18 | HAMPTON LUMBER MILLS-WASHINGTON INC | DARRINGTON, Snohomish, WA | Pass | Local |
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.