Air Quality State Implementation Plans; Approvals and Promulgations: Texas; Attainment Demonstration for the Dallas/Fort Worth 1997 8-Hour Ozone Nonattainment Area; Determination of Attainment of the 1997 Ozone Standard
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Air Quality State Implementation Plans; Approvals and Promulgations: Texas; Attainment Demonstration for the Dallas/Fort Worth 1997 8-Hour Ozone Nonattainment Area; Determination of Attainment of the 1997 Ozone Standard
Source: EPA Regulations news 2