EPA Air · stack tests by county and year
Air-emissions stack tests in Hawaii County, Hawaii, 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 Hawaii County, Hawaii 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 Hawaii County facility page.
Air-emissions stack tests in Hawaii County, other years
Air-emissions stack tests recorded in Hawaii County, Hawaii, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-19 | HELCO - KEAHOLE — high-priority violation on file | Pass | State |
| 2025-08-15 | HELCO - KEAHOLE — high-priority violation on file | Pass | State |
| 2025-08-15 | HELCO - KEAHOLE — high-priority violation on file | Pass | State |
| 2025-08-13 | HELCO - WAIMEA | Pass | State |
| 2025-08-13 | HELCO - OULI | Pass | State |
| 2025-08-12 | HELCO - KAPUA | Pass | State |
| 2025-08-11 | HELCO - OULI | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.