Approval and Promulgation of Air Quality Implementation Plans; Massachusetts; Amendment to Massachusetts' State Implementation Plan for Transit System Improvements

The EPA is approving a State Implementation Plan (SIP) revision submitted by the Commonwealth of Massachusetts. This revision changes completion dates of delayed transit projects, provides interim deadlines for projects, maintains requirements for interim emission reduction offsets in the event a project becomes delayed, modifies the project substitution process, revises the list of required transit projects, and expands public participation in and oversight of the projects. The intended effect of this action is to substitute specific transit projects and 1,000 park and ride spaces to replace certain transit projects currently approved into the SIP, and approve modifications to the delay and substitution procedures for transit projects. This action is being taken under the Clean Air Act.