EPA Air · by county and classification
Minor sources in Middlesex County, Massachusetts
- 615Facilities
Sources in Middlesex County, Massachusetts that EPA records under the 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 Middlesex County
Facilities
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Classification as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
The page covers Clean Air Act facilities in the EPA air register for Middlesex county, MA, listing minor sources. It reports 932 facilities in Middlesex county, including 12 major sources and 615 minor sources.