The U.S. Environmental Protection Agency (EPA) has proposed approval of revisions to Florida’s state implementation plan (SIP) for the 1997 8-hour ozone national ambient air quality standard (NAAQS). Federal regulations currently impose an ozone-season Reid vapor pressure (RVP) standard of 9.0 psi statewide, except in Broward, Duval, Hillsborough, Miami-Dade, Palm Beach, and Pinellas Counties (hereinafter referred to as the “maintenance plan areas”), which are currently subject to a more stringent ozone-season RVP standard of 7.8 psi due to having been previously designated as nonattainment areas for the 1979 1-hour ozone NAAQS.
As previously reported by HGS, the revisions to Florida’s SIP include modifying the maintenance plan areas’ current ozone-season RVP standard of 7.8 psi to a less stringent standard of 9.0 psi, as well as removing motor vehicle inspection and maintenance programs (which were previously implemented as part of Florida’s strategy to meet the 1979 1-hour ozone NAAQS) for the maintenance plan areas. Updated modeling by the Florida Department of Environmental Protection (DEP) indicates that the maintenance plan areas will continue to maintain the 1997 8-hour ozone standard under the less stringent 9.0 psi RVP standard and without the motor vehicle inspection and maintenance programs. EPA has also proposed to approve updated attainment inventories, emissions projections, and air quality monitoring which are associated with updated and revised modeling related to these changes.
Comments on EPA’s proposal are due by December 9, 2013. For additional information, contact Andrew Holway.