EPA Air · stack tests by county and year
Air-emissions stack tests in Riverside County, California, 2026
- 4Stack 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 Riverside County, California during 2026. 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 Riverside County facility page.
Riverside County, California, 2026
- Inspections 28
Air-emissions stack tests in Riverside County, other years
Air-emissions stack tests recorded in Riverside County, California, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-04-29 | SO CAL GAS - BLYTHE | Pass | Local |
| 2026-04-29 | SO CAL GAS - BLYTHE | Pass | Local |
| 2026-04-09 | SO CAL GAS - BLYTHE | Pass | Local |
| 2026-04-09 | SO CAL GAS - BLYTHE | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.