EPA Air · stack tests by county and year
Air-emissions stack tests in Cowlitz County, Washington, 2025
- 79Stack 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 Cowlitz County, Washington 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 Cowlitz County facility page.
Cowlitz County, Washington, 2025
Air-emissions stack tests in Cowlitz County, other years
Air-emissions stack tests recorded in Cowlitz County, Washington, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-12-10 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-12-09 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-12-04 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-11-25 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-19 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-18 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-14 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-13 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-13 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-12 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-11-11 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-10-31 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-10-31 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-10-30 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-10-29 | WESTROCK LONGVIEW LLC — high-priority violation on file | Fail | State |
| 2025-10-28 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-09-18 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-09-17 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-09-16 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-09-16 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-08-29 | WESTROCK LONGVIEW LLC — high-priority violation on file | Incomplete | State |
| 2025-08-28 | WESTROCK LONGVIEW LLC — high-priority violation on file | Incomplete | State |
| 2025-08-27 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-26 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-22 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-21 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-21 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-21 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-08-21 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-08-21 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-08-21 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-08-20 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-08-19 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-07-24 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-07-23 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-07-11 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-07-10 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-07-09 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-07-08 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-06-25 | LANXESS CORPORATION — high-priority violation on file | Fail | Local |
| 2025-06-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-06-10 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-06-06 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-06-04 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-06-03 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-30 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-05-29 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-05-29 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-05-28 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-05-22 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-21 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-20 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-05-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-04-17 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-04-16 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-04-16 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-04-16 | LANXESS CORPORATION — high-priority violation on file | Pass | Local |
| 2025-03-28 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-03-28 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-03-26 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-03-25 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-03-25 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-02-12 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-12 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-07 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-06 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-05 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-02-04 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-01-22 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
| 2025-01-22 | MINT FARM GENERATION, LLC. | Pass | Local |
| 2025-01-21 | WESTROCK LONGVIEW LLC — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.