Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Roosevelt County, Montana, 2023

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 Roosevelt County, Montana during 2023. 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 Roosevelt County facility page.

Air-emissions stack tests in Roosevelt County, other years

Air-emissions stack tests recorded in Roosevelt County, Montana, 2023

DateFacilityKindAgency
2023-08-25N. BORDER PIPELINE CO STA. 3PassState
2023-04-03BASIN ELECTRIC POWER COOPERATIVEPassState
2023-04-03BASIN ELECTRIC POWER COOPERATIVEPassState

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 Roosevelt county, MT, in 2023. It lists 3 stack tests recorded in 2023.