Designation of Areas for Air Quality Planning Purposes; State of Texas; Correction of the Design Value and Classification for the Beaumont/Port Arthur Ozone Nonattainment Area

This document announces the Administrator's decision to correct the design value and classification of the Beaumont/Port Arthur ozone nonattainment area. The Beaumont/Port Arthur area (the area) was classified as a serious ozone nonattainment area by EPA on November 6, 1991. However, EPA has determined that the ozone design value of 0.160 parts per million (ppm) published by EPA and used in classifying the area as a serious ozone nonattainment area was incorrect. The correct monitored ozone design value was 0.158 ppm. This design value falls within the range of values considered as moderate nonattainment for ozone under the Clean Air Act Amendments of 1990 (CAAA). Pursuant to section 110(k)(6) of the CAAA, which allows EPA to correct its actions, EPA is today publishing the correct design value of 0.158 ppm and is granting the State's request to correct the classification of the area from serious to moderate.