Minnesota Enclosed Sports Arena Rule Revision
Statement of Need and Reasonableness (SONAR)
Proposed Rules Chapter 4620
Sonar (PDF:56 pages/331KB)
Sonar Appendix A - Air Quality Guidelines, Regulations and Recommendations for Ice Arenas (PDF:2 pages/43KB)
Sonar Appendix B - Indoor Air Quality in Ice Arenas (PDF:24 pages/226KB)
Sonar Appendix C - Indoor Air Quality in Motorsports Arenas (PDF:10 pages/103KB)
Sonar Appendix D - Air Pollutants in Indoor Ice Arenas (PDF:13 pages/119KB)
Sonar Appendix E - Proposed Action and Evacuation Levels for Carbon Monoxide (PDF:11 pages/108KB)
Sonar Appendix F - Action Levels for Nitrogen Dioxide (PDF:9 pages/92KB)
Sonar Appendix G - CO and No2 Air Monitoring Instruments (PDF:18 pages/188KB)
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