Sulfur Dioxide (SO2) Designations Round 3: Colorado State Recommendation and EPA Response
Read the Colorado recommendation for Round 3 area designations and EPA's response.
- Round 3 State Recommendation (pdf) (4.6 MB)
- Updated Recommendation (pdf) (4.6 MB)
- EPA Response to Round 3 Recommendation (pdf) (138 KB)
- Technical Support Document (pdf) (10.5 MB)