2010 END OF SEASON OZONE SCORECARD

Tulsa Area Ozone Trends

Through 12/31/20102 Exceedance Days: July 26, August 27  


Monitor Site

 

2010 Highest 8-Hr Ozone Averages (ppm) *

(1st through 4th highest readings)

DESIGN VALUE

3-Year Average

of the 4th highest readings

2007 4th High

2008 4th High

2009 4th High

1st Highest

date

2nd Highest

date

3rd Highest

date

4th Highest

date

07-09 Avg

CURRENT

2008-2010 Avg

West (#144 Mannford)

0.074

6-Aug

0.071

17-Oct

0.069

1-Jul

0.069

23-Aug

0.071

0.070

0.71

0.069

0.074

East (#178 Lynn Lane)

0.072

17-Oct

0.071

19-Aug

0.071

23-Aug

0.071

27-Aug

0.072

0.070

0.075

0.069

0.072

Central (#1127 Tulsa)

0.073

26-Jul

0.072

19-Aug

0.072

27-Aug

0.070

28-Aug

0.071

0.070

0.072

0.069

0.072

North (#137 Skiatook)

0.078

26-Jul

0.077

27-Aug

0.074

19-Aug

0.073

23-Aug

0.075

0.075

0.073

0.079

0.073

South (#174 Glenpool)

0.072

26-May

0.069

5-May

0.069

24-Jun

0.067

3-Jun

0.067

0.067

0.069

0.066

0.067

An ozone exceedance = .076 ppm or greater

Is our 2008-2010 Design Value currently meeting the ozone standard? Yes

North monitor example (0.079 + 0.073 + 0.073) / 3 = 0.075 ppm

 

Does our 2007-2009 Design Value meet the ozone standard? YES

 

 *2010 data is preliminary and subject to change as a result of the ODEQ/EPA verification process
 

Explaining the Ozone Standard Averages

·       EPA's National Ambient Air Quality Standard (NAAQS) for Ozone is 0.075 parts per million (ppm)

·       The Ozone Standard is calculated by averaging data over a three year time period. This average is taken from the fourth highest (8-hr average) at each monitor. A violation occurs when the 3-year average is greater than 0.075 ppm.

·      The monitor with the highest 3-year average defines an area’s ‘Design Value’.

 

Tulsa Area Ozone Alert! Days 2000 - Present

Year

May

June

July

August

September

Alert! Days

2010

28th

None  None  12th, 19th, 23rd, 28th  None 5

2009

 None

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

8

2002

None

24th, 25th

9th, 10th, 25th

6th, 9th, 31st

None

8

2001

None

26th

11th, 25th

3rd, 4th, 6th, 7th

14th

8

2000

None

None

17th

1st, 2nd, 3rd, 4th, 15th, 16th, 23rd, 24th, 25th, 26th

2nd, 3rd, 4th, 8th

15