Regulation & law · 07/11/2011Updated: 10/17/2026 · 1 min read

EPA Proposes Approval of Pennsylvania's Air Quality Plan for Liberty-Clairton Nonattainment Area

Summary

The Environmental Protection Agency (EPA) is proposing to approve, with conditions, Pennsylvania's State Implementation Plan (SIP) revisions for the Liberty-Clairton nonattainment area, which must meet the 1997 fine particulate matter National Ambient Air Quality Standard (NAAQS) by April 5, 2015.

Original source language: Federal Register — All DocumentsOpen original release →

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