EPA Air · stack tests by county and year
Air-emissions stack tests in Los Angeles County, California, 2025
- 139Stack 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 Los Angeles County, California 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 Los Angeles County facility page.
Los Angeles County, California, 2025
- Inspections 177
Air-emissions stack tests in Los Angeles County, other years
Air-emissions stack tests recorded in Los Angeles County, California, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-19 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-12-18 | SO CAL GAS CO/PLAYA DEL REY STORAGE | Pass | Local |
| 2025-12-18 | AIR PROD & CHEM INC | Pass | Local |
| 2025-12-15 | SO CAL GAS CO/PLAYA DEL REY STORAGE | Pass | Local |
| 2025-12-08 | LUNDAY-THAGARD CO DBA WORLD OIL REFINING — high-priority violation on file | Pass | Local |
| 2025-12-04 | LUNDAY-THAGARD CO DBA WORLD OIL REFINING — high-priority violation on file | Pass | Local |
| 2025-12-04 | SO CAL GAS CO/PLAYA DEL REY STORAGE | Pass | Local |
| 2025-12-03 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | Pass | Local |
| 2025-11-25 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-11-20 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-11-19 | LA COUNTY SANITATION DISTRICTS (SPADRA) | Pass | Local |
| 2025-11-19 | VERNON PUBLIC UTILITIES | Pass | Local |
| 2025-11-18 | ULTRAMAR INC | Fail | Local |
| 2025-11-17 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-11-12 | PHILLIPS 66 COMPANY/LA REFINERY | Pass | Local |
| 2025-11-11 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-11-10 | TESORO REFINING AND MARKETING CO — high-priority violation on file | Pass | Local |
| 2025-11-10 | LA CO. SANITATION DIST | Pass | Local |
| 2025-11-10 | PHILLIPS 66 PIPELINE LLC | Pass | Local |
| 2025-10-28 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-10-28 | PHILLIPS 66 COMPANY/LA REFINERY | Pass | Local |
| 2025-10-27 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-10-25 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-10-24 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-10-23 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-10-23 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-10-23 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-10-22 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-10-20 | PHILLIPS 66 COMPANY/LA REFINERY | Pass | Local |
| 2025-10-02 | PHILLIPS 66 COMPANY/LA REFINERY | Pass | Local |
| 2025-10-01 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-29 | TESORO REFINING MARKETING COMPANY LLC | Pass | Local |
| 2025-09-29 | TESORO REFINING MARKETING COMPANY LLC | Pass | Local |
| 2025-09-26 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-25 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-09-24 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-22 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-09-19 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-09-19 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-18 | EQUILON ENTER. LLC, SHELL OIL PROD. US | Pass | Local |
| 2025-09-17 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-09-16 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-12 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-09-11 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-09-10 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-09-09 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-09-08 | PHILLIPS 66 CO/LA REFINERY WILMINGTON — high-priority violation on file | Pass | Local |
| 2025-09-08 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-09-05 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-04 | LA CITY, DWP HARBOR GENERATING STATION | Pass | Local |
| 2025-09-03 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-09-02 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-28 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-27 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-27 | LA CITY, DWP SCATTERGOOD GENERATING STN | Pass | Local |
| 2025-08-26 | TESORO LOGISTICS MARINE TERMINAL 2 | Pass | Local |
| 2025-08-22 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-22 | PASADENA CITY, DWP (EIS USE) | Pass | Local |
| 2025-08-20 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-19 | VERNON PUBLIC UTILITIES | Pass | Local |
| 2025-08-14 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-08-08 | LA CITY, DWP SCATTERGOOD GENERATING STN | Pass | Local |
| 2025-08-01 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-07-30 | KINDER MORGAN LIQUIDS TERMINALS LLC | Pass | Local |
| 2025-07-29 | SO CAL GAS CO | Pass | Local |
| 2025-07-29 | SO CAL GAS CO | Pass | Local |
| 2025-07-29 | SO CAL GAS CO | Pass | Local |
| 2025-07-28 | SO CAL GAS CO | Pass | Local |
| 2025-07-22 | CHEVRON USA INC | Pass | Local |
| 2025-07-17 | SO CAL EDISON CO | Pass | Local |
| 2025-07-15 | SO CAL EDISON CO | Pass | Local |
| 2025-07-15 | ENERY HOLDINGS LLC | Pass | Local |
| 2025-07-10 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-10 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-09 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-09 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-09 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-09 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-07-09 | INEOS POLYPROPYLENE LLC | Pass | Local |
| 2025-06-26 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-06-24 | SO CAL GAS CO | Pass | Local |
| 2025-06-24 | SO CAL GAS CO | Pass | Local |
| 2025-06-24 | SO CAL GAS CO | Pass | Local |
| 2025-06-23 | LA CITY DWP- VALLEY GENERATING STN | Pass | Local |
| 2025-06-18 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-06-14 | AES ALAMITOS STATION, LLC | Pass | Local |
| 2025-06-11 | EL SEGUNDO ENERGY CENTER LLC | Pass | Local |
| 2025-06-09 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-06-06 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-06-04 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-06-03 | LADW&P-HAYNES STEAM | Pass | Local |
| 2025-06-03 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-06-02 | WALNUT CREEK ENERGY, LLC | Pass | Local |
| 2025-05-28 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | Pass | Local |
| 2025-05-28 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | Pass | Local |
| 2025-05-27 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | Pass | Local |
| 2025-05-22 | AIR PRODUCTS AND CHEMICALS INC | Pass | Local |
| 2025-05-20 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | Pass | Local |
| 2025-05-19 | EQUILON ENTER. LLC, SHELL OIL PROD. US | Pass | Local |
| 2025-05-13 | BURBANK CITY, BURBANK WATER & POWER | Pass | Local |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.