2008 END OF SEASON OZONE SCORECARD

Days Standard Exceeded: 7/3; 7/23; 7/28; 7/31; 8/4; 8/5; 8/6; 9/28 = 8                                                                                Through 12/31/2008      

Monitor Site

2008 Highest 8-Hr Ozone Averages (ppm)*

(1st through 4th highest readings)

Current 3-Year Average

of the 4th highest readings

2005 4th High

2006 4th High

2007 4th High

1st Highest

date

2nd Highest

date

3rd Highest

date

4th Highest

date

05-07 Avg

06-08 Avg

Central (#1127 Tulsa)

0.077

28-Sept

0.075

5-Aug

0.070

23-Jul

0.069

4-Aug

0.078

0.074

0.082

0.081

0.072

North (#137 Skiatook)

0.100

5-Aug

0.087

4-Aug

0.085

23-Jul

0.079

28-Jul

0.080

0.078

0.083

0.084

0.073

South (#174 Glenpool)

0.072

31-Jul

0.070

19-Apr

0.067

20-Apr

0.066

5-May

0.073

0.071

0.072

0.078

0.069

East (#178 Lynn Lane)

0.080

3-July

0.070

28-Sept

0.069

31-Jul

0.069

1-Aug

0.080

0.076

0.081

0.084

0.075

West (#144 Mannford)

0.075

19-Apr

0.074

31-Jul

0.070

18-Jun

0.069

20-Apr

0.077

0.075

0.076

0.085

0.071

An ozone exceedance = .076 ppm or greater

Are we currently meeting the ozone standard? NO

North monitor example (0.084 + 0.073 + 0.079) / 3 = 0.078 ppm

 *2008 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’s Design Value (2006, 2007, 2008) is currently the North monitor with a 0.078 ppm ozone Design Value.

 

Tulsa Area Ozone Alert! Days 2000 - Present

Year

May

June

July

August

September

Alert! Days

2008

None

 None

 18th, 28th, 31st

 1st, 2nd, 4th,5th,26th

 

 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