EPA Air · by county

Air-emissions sources in Weld County, Colorado

• 8,858Facilities

Every stationary source in Weld County, Colorado 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.

By emissions classification in Weld 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.

• Minor source 7,950
• Synthetic minor source 814
• Major source 89

Inspections in Weld 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 125
• 2025 — inspections 440
• 2024 — inspections 387
• 2023 — inspections 289
• 2022 — inspections 246
• 2021 — inspections 323
• 2020 — inspections 265
• 2019 — inspections 152
• 2018 — inspections 153
• 2017 — inspections 178

Other counties in Colorado

Every county in the state with at least three sources on file.

• Morgan County 61
• Otero County 40
• Ouray County 3
• Park County 17
• Phillips County 22
• Pitkin County 16
• Prowers County 53
• Pueblo County 162
• Rio Blanco County 402
• Rio Grande County 27
• Routt County 45
• Saguache County 14
• San Miguel County 37
• Sedgwick County 15
• Summit County 33
• Teller County 18
• Undetermined County 1,500
• Washington County 85
• Yuma County 152

Facilities

County as filed on the facility record. Figures from EPA’s ICIS-AIR download.