EPA Air · by county
Air-emissions sources in Cass County, Nebraska
- 104Facilities
Every stationary source in Cass County, Nebraska that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Cass County
Each of the 89 operating major, synthetic minor and minor sources in Cass County, Nebraska has a record page: every source in Cass County, A to Z.
By emissions classification in Cass County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Cass County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 6
- 2025 inspections 9
- 2024 inspections 15
- 2023 inspections 4
- 2022 inspections 10
- 2021 inspections 3
- 2019 inspections 10
- 2017 inspections 12
Violations in Cass County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
Stack tests in Cass County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 12
- 2024 stack tests 12
- 2023 stack tests 16
- 2022 stack tests 10
- 2021 stack tests 11
- 2020 stack tests 5
- 2019 stack tests 11
- 2018 stack tests 7
- 2017 stack tests 14
Inspections in Cass County, year by year · Violations in Cass County, year by year · Stack tests in Cass County, year by year
Other counties in Nebraska
Every county in the state with at least three sources on file.
- Antelope County 39
- Arthur County 3
- Banner County 3
- Boone County 26
- Box Butte County 31
- Boyd County 11
- Brown County 15
- Buffalo County 144
- Burt County 39
- Butler County 61
- Cedar County 46
- Chase County 20
- Cherry County 18
- Cheyenne County 54
- Clay County 46
- Colfax County 41
- Cuming County 48
- Custer County 62
- Dakota County 62
Cass County carries 104 of the 4,752 air-emissions sources this register holds in Nebraska, which places it 12th of 89 in that cohort.
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Cass county, NE. It lists 104 facilities and 2 major sources.