EPA Air · by county and classification
Major sources in Natrona County, Wyoming
- 3Facilities
Sources in Natrona County, Wyoming that EPA records under the major 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 Natrona County
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | Major source | No |
| CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) | Major source | Yes |
| MILLS COMPLEX (BLACK HILLS BENTONITE LLC) | Major source | No |
Classification as filed on the facility record. Figures from EPA’s ICIS-AIR download.