EPA Air · stack tests by county, year by year

Air-emissions stack tests in Undetermined County, Utah, year by year

• 389Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Undetermined County, Utah, most recent first. Each year page lists the events recorded at sources in the county that year.

Undetermined County, Utah, by year

• 2026 8
• 2025 51
• 2024 38
• 2023 53
• 2022 42
• 2021 40
• 2020 39
• 2019 48
• 2018 36
• 2017 34

All sources in Undetermined County →

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