2009 Tulsa Area Ozone Season Report Card

 

 

 

Monitor

  2009 Highest

8-Hr Ozone Averages (ppm)

(1st through 4th highest readings)

 DESIGN VALUE

3-Year

Average

of the 4th highest readings

2006
4th High

2007

4th High

2008

4th High

1st Highest

date

2nd Highest

date

3rd Highest

date

 4th Highest

date

2006-2008
Design Value

2007-2009 FINAL
Design Value

 

 

 

 

 

 

 

West   (#144 Mannford)

0.083

24-Jun

0.081

12-Aug

0.075

5-Aug

0.074

8-Apr

0.075

0.071

0.085

0.071

0.069

East (#178 Lynn Lane)

0.083

26-Jun

0.083

15-Jul

0.074

13-Jul

0.072

5-Jul

0.076

0.072

0.084

0.075

0.069

Central   (#1127 Tulsa)

0.094

24-Jun

0.078

26-Jun

0.078

2-Jul

0.072

2-Aug

0.074

0.071

0.081

0.072

0.069

North (#137 Skiatook)

0.077

22-Apr

0.077

24-Jun

0.075

26-Jun

0.073

2-Jul

0.078

0.075

0.084

0.073

0.079

South   (#174 Glenpool)

0.075

1-Jul

0.069

8-Apr

0.069

30-Jun

0.067

18-Mar

0.071

0.067

0.078

0.069

0.066

An ozone exceedance = .076 ppm or greater

6 Exceedance Days in 2009: April 22, June 24, June 26, July 2, July 15, Aug 12

 

Is our 2007-2009 Ozone Design Value  meeting the standard? YES!

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). 

 

How to Calculate the EPA Ozone Standard (North monitor example):

=   .073 +  .079   + .073   ų 3  =  0.075 ppm (no rounding)

 

A VIOLATION of the EPA Ozone Standard occurs when any monitorís Design Value is greater or equal to .076 ppm

We are not in violation of the standard!

 

Tulsaís Ozone Levelís since 1999

click to enlarge
 

 

Tulsa Area Ozone Alert! Days since 2003

Year

May

June

July

August

September

Alert! Days

2009

 

24th, 25th, 26th, 27th, 30th

 1st, 7th, 11th, 16th

13th, 25th

 

 11

2008

None

 None

 18th, 28th, 31st

 1st, 2nd, 4th,5th,26th

None

 8

2007

None

None

None

2nd, 3rd, 14th, 15th, 16th

None

5

2006

25th

12th, 15th, 29th, 30th

1st, 2nd, 17th, 19th, 20th, 21st

24th

None

12

2005

None

21st, 22nd, 24th, 25th, 26th

30th

1st, 2nd, 4th, 10th

3rd, 4th, 5th

13

2004

None

None

15th, 21st, 22nd

None

None

3

2003

None

None

2nd, 3rd, 30th

6th, 7th, 23rd, 26th, 27th

None

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