EPA Air · stack tests by county and year

Air-emissions stack tests in Ada County, Idaho, 2026

20Stack 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 Ada County, Idaho 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 Ada County facility page.

Ada County, Idaho, 2026

Air-emissions stack tests in Ada County, other years

Air-emissions stack tests recorded in Ada County, Idaho, 2026

Date	Facility	Kind	Agency
2026-07-02	PREMIER LLC - PLEASANT VALLEY ROAD	Pending	State
2026-06-25	STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00407	Pass	State
2026-06-24	STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00406	Pass	State
2026-06-17	SUPERIOR BLASTING INC 00708	Pass	State
2026-06-02	KNIFE RIVER CORP - MTN WEST 00051	Pass	State
2026-04-30	WESTERN CONSTRUCTION - BOISE	Pass	State
2026-04-30	WESTERN CONSTRUCTION 00098	Pass	State
2026-04-30	WESTERN CONSTRUCTION 00604	Pass	State
2026-04-30	WESTERN CONSTRUCTION 00605	Pass	State
2026-04-30	WESTERN CONSTRUCTION INC 00680	Pass	State
2026-04-30	WESTERN CONSTRUCTION INC 00682	Pass	State
2026-04-30	WESTERN CONSTRUCTION INC 00683	Pass	State
2026-03-24	STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00407	Pass	State
2026-03-12	H & B CRUSHING 00380	Pass	State
2026-03-12	H & B CRUSHING 00595	Pending	State
2026-03-12	H & B CRUSHING 00596	Pass	State
2026-03-12	H & B CRUSHING 00597	Pass	State
2026-03-12	H & B CRUSHING 00598	Pass	State
2026-03-12	H & B CRUSHING 00615	Pass	State
2026-03-03	PREMIER LLC 00706	Pass	State

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

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