EPA Air · stack tests by county and year
Air-emissions stack tests in Mobile County, Alabama, 2025
- 90Stack 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 Mobile County, Alabama 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 Mobile County facility page.
Mobile County, Alabama, 2025
Air-emissions stack tests in Mobile County, other years
Air-emissions stack tests recorded in Mobile County, Alabama, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-10 | AM/NS CALVERT LLC | Pass | State |
| 2025-11-09 | HILCORP ENERGY COMPANY | Pass | State |
| 2025-11-08 | HILCORP ENERGY COMPANY | Pass | State |
| 2025-11-04 | OUTOKUMPU STAINLESS USA, LLC | Pass | State |
| 2025-10-22 | HILCORP ENERGY COMPANY | Pass | State |
| 2025-10-22 | HILCORP ENERGY COMPANY | Pass | State |
| 2025-10-21 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-10-21 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-10-21 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-10-21 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-10-21 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-10-21 | HILCORP ENERGY COMPANY | Pass | State |
| 2025-10-20 | GULF SOUTH PIPELINE COMPANY, LP | Pass | State |
| 2025-10-20 | GULF SOUTH PIPELINE COMPANY, LP | Pass | State |
| 2025-10-14 | ALABAMA POWER COMPANY | Pass | State |
| 2025-10-14 | HIGH-PURITY SILICON AMERICA CORPORATION | Pass | State |
| 2025-10-08 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-07 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-07 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-07 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-06 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-06 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-06 | W&T OFFSHORE, INC. | Pass | State |
| 2025-10-06 | W&T OFFSHORE, INC. | Pass | State |
| 2025-09-03 | WILLIAMS MOBILE BAY PRODUCER SERVICES, LLC | Pass | State |
| 2025-09-03 | WILLIAMS MOBILE BAY PRODUCER SERVICES, LLC | Pass | State |
| 2025-08-21 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-20 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-19 | FMC CORPORATION | Pass | State |
| 2025-08-14 | AM/NS CALVERT LLC | Fail | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-14 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-08-05 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-08-05 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-07-15 | ALABAMA POWER COMPANY | Pass | State |
| 2025-06-17 | SSAB ALABAMA INC | Pass | State |
| 2025-06-17 | SSAB ALABAMA INC | Pass | State |
| 2025-06-04 | AM/NS CALVERT LLC | Pass | State |
| 2025-05-20 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-05-19 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-05-19 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-05-19 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-05-14 | OUTOKUMPU STAINLESS USA, LLC | Pass | State |
| 2025-05-14 | EVONIK CORPORATION | Pass | State |
| 2025-05-13 | OUTOKUMPU STAINLESS USA, LLC | Pass | State |
| 2025-05-13 | OUTOKUMPU STAINLESS USA, LLC | Pass | State |
| 2025-04-25 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-04-25 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-04-24 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-04-24 | VERTEX REFINING ALABAMA LLC | Pass | State |
| 2025-04-17 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-04-17 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-04-17 | ARKEMA INC | Pass | State |
| 2025-04-16 | ARKEMA INC | Pass | State |
| 2025-03-27 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | Pass | State |
| 2025-03-26 | WILLIAMS MOBILE BAY PRODUCER SERVICES, LLC | Pass | State |
| 2025-03-25 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-25 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-25 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-25 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-25 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-03-24 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-24 | GULFSTREAM NATURAL GAS SYSTEM LLC | Pass | State |
| 2025-03-18 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-25 | OUTOKUMPU STAINLESS USA, LLC | Pass | State |
| 2025-02-19 | INCOA PERFORMANCE MINERALS, LLC | Pass | State |
| 2025-02-18 | INCOA PERFORMANCE MINERALS, LLC | Pass | State |
| 2025-02-18 | NOURYON FUNCTIONAL CHEMICALS LLC | Pass | State |
| 2025-02-18 | NOURYON FUNCTIONAL CHEMICALS LLC | Pass | State |
| 2025-02-18 | NOURYON FUNCTIONAL CHEMICALS LLC | Pass | State |
| 2025-02-12 | AMRIZE CEMENT, INC. | Pass | State |
| 2025-02-06 | AM/NS CALVERT LLC | Pass | State |
| 2025-02-04 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-04 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-03 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-03 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-03 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-03 | W&T OFFSHORE, INC. | Pass | State |
| 2025-02-03 | W&T OFFSHORE, INC. | Pass | State |
| 2025-01-30 | FLORIDA GAS TRANSMISSION CO | Pass | State |
| 2025-01-17 | AM/NS CALVERT LLC | Pass | State |
| 2025-01-16 | AM/NS CALVERT LLC | Pass | State |
| 2025-01-15 | AM/NS CALVERT LLC | Pass | State |
| 2025-01-15 | AM/NS CALVERT LLC | Pass | State |
| 2025-01-15 | ALABAMA POWER COMPANY | Pass | State |
| 2025-01-08 | AMRIZE CEMENT, INC. | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.