EPA Air · stack tests by county and year

Air-emissions stack tests in Washington County, Arkansas, 2025

13Stack 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 Washington County, Arkansas 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 Washington County facility page.

Air-emissions stack tests in Washington County, other years

Air-emissions stack tests recorded in Washington County, Arkansas, 2025

Date	Facility	Kind	Agency
2025-10-02	ARKANSAS ELECTRIC COOPERATIVE CORPORATION - ELKINS CT PLANT	Pass	State
2025-10-02	ARKANSAS ELECTRIC COOPERATIVE CORPORATION - ELKINS CT PLANT	Pass	State
2025-08-29	SOUTHWESTERN ELECTIRC POWER COMPANY - HARRY D. MATTISON POWER PLANT	Pass	State
2025-08-28	SOUTHWESTERN ELECTIRC POWER COMPANY - HARRY D. MATTISON POWER PLANT	Pass	State
2025-04-24	ECO-VISTA, LLC - WASTE MANAGEMENT OF ARKANSAS, INC. — high-priority violation on file	Pass	State
2025-04-24	ECO-VISTA, LLC - WASTE MANAGEMENT OF ARKANSAS, INC. — high-priority violation on file	Pass	State
2025-04-24	ECO-VISTA, LLC - WASTE MANAGEMENT OF ARKANSAS, INC. — high-priority violation on file	Pass	State
2025-04-24	ECO-VISTA, LLC - WASTE MANAGEMENT OF ARKANSAS, INC. — high-priority violation on file	Pass	State
2025-04-24	ECO-VISTA, LLC - WASTE MANAGEMENT OF ARKANSAS, INC. — high-priority violation on file	Pass	State
2025-03-25	TYSON POULTRY, INC.	Pass	State
2025-03-25	TYSON POULTRY, INC.	Pass	State
2025-03-25	TYSON POULTRY, INC.	Pass	State
2025-03-25	TYSON POULTRY, INC.	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 Washington county, AR, in 2025. It lists 13 stack tests recorded in 2025.