Jun 21 – US: Stronger Standards for Smog Proposed
A recent news release from the EPA includes the following: The proposal recommends an ozone standard within a range of 0.070 to 0.075 parts per million (ppm). EPA also is taking comments on alternative standards within a range from 0.060 ppm up to the level of the current 8-hour ozone standard, which is 0.08 ppm… […]