Approval and Promulgation of Air Quality Implementation Plans; New Hampshire; Determination of Attainment of the One-Hour Ozone Standard for the Portsmouth-Dover-Rochester and Manchester Areas

The EPA is making four separate and independent air quality determinations for two areas in New Hampshire. First, EPA is determining that the Portsmouth-Dover-Rochester, New Hampshire serious one-hour ozone nonattainment area met the applicable deadline of November 15, 1999, for attaining the revoked one-hour National Ambient Air Quality Standard (NAAQS) for ozone. Second, EPA is determining that the Portsmouth-Dover-Rochester area has attained the one-hour ozone standard since 1999, and continues to attain the standard. Third, with respect to the Manchester, New Hampshire marginal one-hour ozone nonattainment area, EPA is determining that the area attained the one- hour ozone NAAQS by the applicable deadline of November 15, 1993. Fourth, with respect to the Manchester area, EPA is determining that the area has attained the one-hour ozone NAAQS since 1993, and continues to attain the standard.