EPA Air · stack tests by state and year
Air-emissions stack tests in Hawaii, 2025
- 53Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Hawaii during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Hawaii, 2025
Hawaii, other years
Air-emissions stack tests recorded in Hawaii, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | HAWAIIAN CEMENT - HALAWA | AIEA, Honolulu, HI | Pass | State |
| 2025-11-19 | HELCO - KEAHOLE — high-priority violation on file | KAILUA KONA, Hawaii, HI | Pass | State |
| 2025-11-14 | ALOHA PETROLEUM - HONOLULU | HONOLULU, Honolulu, HI | Pass | State |
| 2025-11-13 | MECO - MAALAEA | MAALAEA, Maui, HI | Pass | State |
| 2025-11-12 | ALOHA PETROLEUM - CIP | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-11-07 | MECO - MAALAEA | MAALAEA, Maui, HI | Pass | State |
| 2025-11-06 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2025-11-05 | MECO - MAALAEA | MAALAEA, Maui, HI | Pass | State |
| 2025-11-04 | MECO - MAALAEA | MAALAEA, Maui, HI | Pass | State |
| 2025-11-03 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-10-21 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2025-10-21 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2025-10-14 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2025-09-30 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-09-25 | HPOWER | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-09-23 | GRACE PACIFIC - KAPAA QUARRY | KAILUA, Honolulu, HI | Pass | State |
| 2025-09-12 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2025-08-15 | HELCO - KEAHOLE — high-priority violation on file | KAILUA KONA, Hawaii, HI | Pass | State |
| 2025-08-15 | HELCO - KEAHOLE — high-priority violation on file | KAILUA KONA, Hawaii, HI | Pass | State |
| 2025-08-14 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Fail | State |
| 2025-08-13 | HELCO - WAIMEA | KAMUELA, Hawaii, HI | Pass | State |
| 2025-08-13 | HELCO - OULI | SOUTH KOHALA, Hawaii, HI | Pass | State |
| 2025-08-13 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Fail | State |
| 2025-08-12 | HELCO - KAPUA | KAPUA, Hawaii, HI | Pass | State |
| 2025-08-12 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-08-11 | HELCO - OULI | SOUTH KOHALA, Hawaii, HI | Pass | State |
| 2025-08-11 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-08-08 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-08-07 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-08-06 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-07-24 | MECO - MIKI BASIN | LANAI CITY, Maui, HI | Pass | State |
| 2025-07-17 | MECO - MIKI BASIN | LANAI CITY, Maui, HI | Pass | State |
| 2025-06-30 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-06-18 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-06-04 | MAHIPAPA | KOLOA, Kauai, HI | Pass | State |
| 2025-05-22 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2025-05-13 | HPOWER | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-05-08 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-05-01 | HECO - SCHOFIELD — high-priority violation on file | WAHIAWA, Honolulu, HI | Pass | State |
| 2025-04-28 | HECO - CAMPBELL INDUSTRIAL PARK | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-04-16 | U.S. NAVY - PEARL HARBOR — high-priority violation on file | PEARL HARBOR, Honolulu, HI | Pass | State |
| 2025-03-31 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-03-13 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2025-03-04 | MECO - MAALAEA | MAALAEA, Maui, HI | Pass | State |
| 2025-02-14 | KAUAI ISLAND UTILITY - PORT ALLEN — high-priority violation on file | ELEELE, Kauai, HI | Pass | State |
| 2025-02-12 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-02-11 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-02-11 | KAUAI ISLAND UTILITY - KAPAIA — high-priority violation on file | LIHUE, Kauai, HI | Pass | State |
| 2025-01-27 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-01-24 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-01-23 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Fail | State |
| 2025-01-22 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2025-01-21 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | 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 with stack tests in HI for 2025. It lists 53 stack tests recorded in 2025.