EPA Air · by county
Air-emissions sources in Ogle County, Illinois
- 123Facilities
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Every stationary source in Ogle County, Illinois 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 Ogle County
Each of the 123 operating major, synthetic minor and minor sources in Ogle County, Illinois has a record page: every source in Ogle County, A to Z.
By emissions classification in Ogle 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 Ogle 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.
- 2025 inspections 13
- 2024 inspections 15
- 2023 inspections 4
- 2022 inspections 9
- 2021 inspections 9
- 2020 inspections 4
- 2019 inspections 9
- 2018 inspections 8
- 2017 inspections 4
Violations in Ogle 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 Ogle County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Inspections in Ogle County, year by year · Violations in Ogle County, year by year · Stack tests in Ogle County, year by year
Other counties in Illinois
Every county in the state with at least three sources on file.
- Massac County 21
- McDonough County 57
- McHenry County 342
- McLean County 200
- Menard County 17
- Mercer County 26
- Monroe County 35
- Montgomery County 65
- Morgan County 65
- Moultrie County 36
- Peoria County 216
- Perry County 29
- Piatt County 37
- Pike County 48
- Pope County 3
- Pulaski County 13
- Putnam County 21
- Randolph County 57
- Richland County 26
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.