EPA Air · stack tests by county and year

Air-emissions stack tests in Ada County, Idaho, 2025

41Stack 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 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 Ada County facility page.

Ada County, Idaho, 2025

Air-emissions stack tests in Ada County, other years

Air-emissions stack tests recorded in Ada County, Idaho, 2025

Date	Facility	Kind	Agency
2025-12-11	H & B CRUSHING 00380	Pass	State
2025-12-11	H & B CRUSHING 00595	Pass	State
2025-12-11	H & B CRUSHING 00596	Pass	State
2025-12-11	H & B CRUSHING 00597	Pass	State
2025-12-11	H & B CRUSHING 00598	Pass	State
2025-12-11	H & B CRUSHING 00615	Pass	State
2025-12-09	MICRON TECHNOLOGY INC BOISE	Pass	State
2025-12-04	SUPERIOR CONSTRUCTION AND EXCAVATING INC 00684	Pass	State
2025-12-03	H & B CRUSHING 00380	Pass	State
2025-12-03	H & B CRUSHING 00595	Pass	State
2025-12-03	H & B CRUSHING 00596	Pass	State
2025-12-03	H & B CRUSHING 00597	Pass	State
2025-12-03	H & B CRUSHING 00598	Pass	State
2025-12-03	H & B CRUSHING 00615	Pass	State
2025-11-24	WESTERN CONSTRUCTION 00098	Pass	State
2025-11-24	WESTERN CONSTRUCTION 00604	Pass	State
2025-11-24	WESTERN CONSTRUCTION 00605	Pass	State
2025-11-24	WESTERN CONSTRUCTION INC 00680	Pass	State
2025-11-24	WESTERN CONSTRUCTION INC 00682	Pass	State
2025-11-24	WESTERN CONSTRUCTION INC 00683	Pass	State
2025-10-10	KNIFE RIVER CORP - MTN WEST 00472	Pass	State
2025-09-25	INLAND ASPHALT CO 00303	Pass	State
2025-08-01	H & B CRUSHING 00596	Pass	State
2025-07-31	H & B CRUSHING 00380	Pass	State
2025-07-30	WESTERN CONSTRUCTION 00212	Pass	State
2025-06-04	WESTERN CONSTRUCTION 00098	Pass	State
2025-06-04	WESTERN CONSTRUCTION 00604	Pass	State
2025-06-04	WESTERN CONSTRUCTION 00605	Pass	State
2025-06-04	WESTERN CONSTRUCTION INC 00680	Pass	State
2025-06-04	WESTERN CONSTRUCTION INC 00682	Pass	State
2025-06-04	WESTERN CONSTRUCTION INC 00683	Pass	State
2025-05-20	KNIFE RIVER CORP - MTN WEST 00378	Pass	State
2025-05-20	KNIFE RIVER CORP - MTN WEST 00585	Pass	State
2025-05-20	KNIFE RIVER CORP - MOUNTAIN WEST 00603	Pass	State
2025-05-20	KNIFE RIVER - MOUNTAIN WEST 00606	Pass	State
2025-05-01	KNIFE RIVER CORP - MTN WEST 00378	Pass	State
2025-05-01	KNIFE RIVER CORP - MTN WEST 00585	Pass	State
2025-05-01	KNIFE RIVER CORP - MOUNTAIN WEST 00603	Pass	State
2025-05-01	KNIFE RIVER - MOUNTAIN WEST 00606	Pass	State
2025-04-10	SUNCORE CONSTRUCTION & MATERIALS - 00582	Pass	State
2025-04-08	NORTHWEST PIPELINE LLC BOISE	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 Ada county, ID, in 2025. It lists 41 stack tests recorded in 2025.