Approval and Promulgation of Air Quality Implementation Plans; Maryland; Reasonably Available Control Technology for Cement Kilns, Revisions to Portland Cement Manufacturing Plant and Natural Gas Compression Station Regulations, and Removal of Nitrogen Oxides Reduction and Trading Program Replaced by Other Programs and Regulations
The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) revisions submitted by the State of Maryland. The revisions pertain to reasonably available control technology (RACT) for cement kilns, revisions to and recodification of certain provisions for Portland cement manufacturing plants (cement plants) and internal combustion (IC) engines at natural gas compression stations, and removal of the obsolete Nitrogen Oxides (NOX) Reduction and Trading Program that has been replaced by other trading programs or addressed in other regulations. EPA is approving these revisions in accordance with the requirements of the Clean Air Act (CAA).
Air Plan Approval; Illinois; Redesignation of the Chicago and Granite City Areas to Attainment of the 2008 Lead Standard
The Environmental Protection Agency (EPA) is approving the Illinois Environmental Protection Agency's (Illinois EPA's) request to redesignate the Chicago and Granite City nonattainment areas (hereafter also referred to as the ``areas'') to attainment for the 2008 national ambient air quality standards (NAAQS or standards) for lead, also identified as Pb. EPA is also approving, as revisions to the Illinois state implementation plan (SIP): The state's plan for maintaining the 2008 lead NAAQS in the areas for a period of ten years following these redesignations; the emissions inventories for the areas; and rules applying emission limits and other control requirements to lead sources in the areas. EPA is taking these actions in accordance with applicable regulations and guidance that address implementation of the 2008 lead NAAQS. EPA proposed this action on October 18, 2017, and received two public comments in response.
Air Plan Revisions; Salt River Pima-Maricopa Indian Community; Navajo Nation; California; Correcting Amendments
On April 29, 2011, the Environmental Protection Agency (EPA) published a direct final rule in the Federal Register redesignating a section in the air quality planning and management regulations for Indian Country; and on January 17, 2012, February 13, 2012, July 2, 2012, June 14, 2017, and June 21, 2017, the EPA published final rules in the Federal Register approving certain revisions to the California State Implementation Plan (SIP). In these final rules, the EPA included inaccurate amendatory instructions that have prevented incorporation of the final actions into the CFR. All the errors are being corrected by this action.
Approval and Promulgation of Air Quality Implementation Plans; State of Montana; Revisions to East Helena Lead SIP
The Environmental Protection Agency (EPA) is taking final action to approve State Implementation Plan (SIP) revisions submitted by the state of Montana on September 11, 2013. The submittal revises the portions of the State Implementation Plan (SIP) that pertain to the East Helena Lead SIP. This action is being taken under section 110 of the Clean Air Act (CAA) (Act).