Good News
Today, as noted in the Federal Register, the EPA reclassified the Raleigh-Durham-Chapel Hill area as being in attainment for the 8 hour ozone requirement for the National Ambient Air Quality Standards (concentrations as measured by monitoring stations rather than direct emissions). The rule is available online in PDF and plain text (my sister tipped me off to this; I certainly don't browse the Federal Register on a daily basis).
The 8 hour standard for ozone means that the "three-year average of the fourth-highest daily maximum eight-hour average ozone concentrations" cannot exceed .08ppm (it's a messy way to calculate this kind of thing, but that's the law). It does mean that certain regulations for permitting are relaxed (this is a complex issue to say the least!).
To be true, I'm not particularly satisfied with the distribution of monitoring stations in the area, although I suppose it can be controlled for to a certain extent. But this is certainly good news. Hopefully the area can stay in compliance.
METAR KIGX 262056Z 31508KT 10SM BKN080 06/02 A3000 RMK SLP161 60001Labels: law, meteorology
posted by weather boy @ 4:11 PM
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