TX155.81 Air Quality State Implementation Plans; Approval and Promulgation; Texas; Infrastructure Requirements for the 1997 Ozone and the 1997 and 2006 PM2.5 NAAQS, Proposed rule accompanying direct final rule.
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TX155.81 Air Quality State Implementation Plans; Approval and Promulgation; Texas; Infrastructure Requirements for the 1997 Ozone and the 1997 and 2006 PM2.5 NAAQS, Proposed rule accompanying direct final rule.
Source: EPA Regulations news 2