EPA Air · stack tests by county and year
Air-emissions stack tests in Morton County, North Dakota, 2025
- 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 Morton County, North Dakota 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 Morton County facility page.
Morton County, North Dakota, 2025
Air-emissions stack tests in Morton County, other years
Air-emissions stack tests recorded in Morton County, North Dakota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-04 | TESORO REFINING & MARKETING COMPANY LLC - MARATHON MANDAN REFINERY - AQ | Pass | State |
| 2025-06-03 | CITY OF MANDAN - LANDFILL AIR CURTAIN DESTRUCTOR - AQ | Pass | State |
| 2025-05-29 | NORTHERN BORDER PIPELINE COMPANY - ST. ANTHONY COMPRESSOR STATION - AQ | Pass | State |
| 2025-05-28 | NORTHERN BORDER PIPELINE COMPANY - GLEN ULLIN COMPRESSOR STATION - AQ | 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 Morton county, ND, in 2025. The stack tests recorded in 2025 total 4.