2060-AO11 200704 Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Air and Radiation AR 2000 Environmental Protection Agency EPA Air Quality Index Reporting and Significant Harm Level for PM2.5 Substantive, Nonsignificant First Time Published in The Unified Agenda Proposed Rule Stage No No 40 CFR 58.50 40 CFR 58, app G 40 CFR 51.150 subpart H 42 USC 7401 et seq No NPRM 08/00/2007 Final Action 12/00/2007 SAN No. 5115; No No Federal Local State Tribal No No NA Not Collected Susan Stone 2060 Office of Air and Radiation OAR 919 541-1146 919 541-0237 stone.susan@epa.gov C504-06, Research Triangle Park NC 27711 Tom Helms 2060 Office of Air and Radiation OAR 919 541-5527 helms.tom@epa.gov C304-04, Research Triangle Park NC 20460