Approval and Promulgation of Air Quality Implementation Plans; Virginia: Determination of Attainment of Ozone Standard and Applicability of Certain Requirements in the Richmond Area

概要

EPA has determined that the Richmond moderate ozone nonattainment area has attained the 1-hour .12 parts per million (ppm) National Ambient Air Quality Standard (NAAQS) for ozone. This determination is based upon the latest four years of ambient air monitoring data for the years 1993-96 that demonstrate that the 1-hour ozone NAAQS is being attained in this area. EPA has also determined that the Richmond area has continued to attain the 1-hour standard to date. On the basis of this determination, EPA is also determining that certain reasonable further progress and attainment demonstration requirements, along with certain other related requirements of part D of Title I of the Clean Air Act (CAA), are not applicable to the Richmond area so long as this area continues to attain the ozone NAAQS, or until the area is redesignated to attainment.