Industry Attacks Legality Of Data, Procedure For EPA Ozone NAAQS Review

摘要

Industry groups are warning EPA that its proposed stricter ozone national ambient air quality standard (NAAQS) is illegal because it relies on the same science the agency used to establish the less stringent 2008 NAAQS, and also violates the Clean Air Act procedure for conducting NAAQS revisions at five-year minimum intervals.rnThe claims could preview the basis for a future industry suit should EPA issue a final revised standard in line with its January proposal to tighten the 8-hour ozone NAAQS in the range of 0.060-0.070 parts per million (ppm) compared to the Bush EPA's 2008 standard of 75ppm. EPA is revising the standard following lawsuits challenging the 2008 NAAQS, and is also proposing a welfare-based secondary NAAQS of 7-15 parts per million-hours.