ozone exceedance =
.076 ppm or
Days in 2009: April
22, June 24, June 26, July 2, July 15, Aug 12
our 2007-2009 Ozone Design Value meeting the
Standard uses the ozone monitor with the highest Design Value
. The Design Value is the highest of each monitorís unique
ozone data <4th highest
value>, averaged over a rolling 3-yr average, with the oldest
year dropping off. Thus, our current yearís ozone Design
Value is the 2007ís 4th high value
+ 2008ís 4th high
+ 2009ís 4th high
averaged (with no rounding).
to Calculate the EPA Ozone Standard (North
.073 + .079
+ .073 ų 3
= 0.075 ppm (no
A VIOLATION of
the EPA Ozone Standard occurs when any monitorís
Design Value is greater or equal to .076 ppm.
are not in violation of the standard!