Sulfur Dioxide (SO2) Designations Round 4: Hawaii State Recommendation and EPA Response
Read the Hawaii recommendation for Round 4 area designations and EPA's response.
- State Recommendation (pdf) (1,002 KB)
- EPA Response to Round 4 Recommendation (pdf) (231 KB)
- Technical Support Documents
- Chapter 1: Background and History of the Intended Round 4 Area Designations for the 2010 1-Hour SO2 Primary National Ambient Air Quality Standard (pdf) (186 KB)
- Chapter 2: Intended Round 4 Area Designations for the 2010 1-Hour SO2 Primary National Ambient Air Quality Standard for Areas without Violating Monitors (pdf) (306 KB)