EPA Air · by county and classification

Synthetic minor sources in Loudoun County, Virginia

• 101Facilities

Sources in Loudoun County, Virginia that EPA records under the synthetic minor source 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 Loudoun County

• Minor source 134
• Major source 4

Facilities

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