RESOURCE Final Eight-Hour Ozone Redesignation Request and Maintenance Plan NOTE: Because these are large files, and as an additional security measure, right click and choose "Save Target As..." to save the files to your disk. Using this method, you can also queue up several documents to download at the same time. Final Eight-Hour Ozone Maintenance Plan (PDF, 1.5 MB) Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume One (PDF, 11.6 MB) Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume Two (PDF, 10.5 MB) Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume Three (PDF, 3.9 MB)