Approval and Promulgation of Air Quality Implementation Plans; Maryland; Low Emissions Vehicle Program Revisions

The Environmental Protection Agency (EPA) proposes to approve two State Implementation Plan (SIP) revisions submitted by the State of Maryland for the purpose of amending Maryland's prior approved Low Emission Vehicles (LEV), or Clean Car Program. Maryland adopted California's emission standards applicable to newly manufactured light and medium-duty motor vehicles in 2007, effective beginning with 2011 and newer vehicles sold in Maryland. EPA approved Maryland's Clean Car Program in prior SIP approval rulemakings. However, since then California revised its LEV program regulations on several occasions, and Maryland subsequently amended its own rules to be consistent with those of California. Maryland then submitted these regulatory amendments to EPA as a revision to its SIP. Maryland submitted two such Clean Car Program SIP revisions in July 2014 and April 2015. In the Final Rules section of this Federal Register, EPA is approving the State's SIP submittal as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If no adverse comments are received in response to this action, no further activity is contemplated. If EPA receives adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time.