Clean Air Act Approval and Promulgation of Air Quality Implementation Plan; Montana; East Helena Lead State Implementation Plan

Streszczenie

The EPA is proposing to partially approve and partially disapprove the East Helena Lead (Pb) State Implementation Plan (SIP) revisions submitted by the Governor of Montana on August 16, 1995, July 2, 1996, and October 20, 1998. The EPA is proposing to grant a simultaneous partial approval and partial disapproval of these SIP revisions because, while they strengthen the SIP, they also do not fully meet the Act provisions regarding plan requirements for nonattainment areas. The intended effect of this action is to make federally enforceable those provisions that EPA is proposing to partially approve, and to not make federally enforceable those provisions that EPA is proposing to partially disapprove. The EPA is taking this action under sections 110, 179, and 301 of the Clean Air Act (Act).