EPA Air · stack tests by county and year

Air-emissions stack tests in Campbell County, Wyoming, 2026

324Stack 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 Campbell County, Wyoming 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 Campbell County facility page.

Campbell County, Wyoming, 2026

Air-emissions stack tests in Campbell County, other years

Air-emissions stack tests recorded in Campbell County, Wyoming, 2026

Date	Facility	Kind	Agency
2026-10-06	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-10-06	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-10-06	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-10-06	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-17	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-17	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-17	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-17	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-02	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-02	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-02	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-02	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-09-02	NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION)	Pass	State
2026-08-26	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-26	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-26	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-26	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-24	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-08-03	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	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 Campbell county, WY, for 2026. It lists 255 stack tests recorded in 2026.