EPA Air · by county and classification

Emissions classification unknowns in St. Charles County, Missouri

• 4Facilities

Sources in St. Charles County, Missouri that EPA records under the emissions classification unknown classification. The classification is a size band, set by a source’s potential to emit: a major source is large enough to require a Title V operating permit, a synthetic minor source has accepted enforceable limits that keep it under that threshold, and a minor source sits below it without needing them.

Other classifications in St. Charles County

• Minor source 129
• Synthetic minor source 5
• Major source 4

Facilities

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