EPA Air · stack tests by county and year

Air-emissions stack tests in Jay County, Indiana, 2026

19Stack 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 Jay County, Indiana 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 Jay County facility page.

Air-emissions stack tests in Jay County, other years

Air-emissions stack tests recorded in Jay County, Indiana, 2026

Date	Facility	Kind	Agency
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-08	POET BIOREFINING PORTLAND LLC	Pass	State
2026-04-08	POET BIOREFINING PORTLAND LLC	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 Jay county, IN, for 2026. It lists 19 stack tests recorded in 2026.