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Interesting graphs and charts department
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09-12-2011, 09:18 AM
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Lamplighter
Person who doesn't update the user title
Join Date: Jun 2010
Location: Bottom lands of the Missoula floods
Posts: 6,402
EPA Green Book air quality 1978 - 2010
The EPA Clean Air Act was established in 1974
Non-attainment = failed to mean standard
W = whole county
P = partial county
What happened in 2004
in OH, PA, WV, and many other states
?
Lamplighter
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