2005 End of Season

Tulsa Metropolitan Area Ozone Score Card

Highest 8-Hour Ozone Averages (ppm)

 

6 Exceedance Days:  June 21, June 22, July 29, August 8, Sept 1, Sept 2

Monitor

Site

2005 8-Hr. Ozone Averages
(1st through 4th highest readings)

4th Highest at end of season is key reading, and is averaged with the 2003 and 2004 4th highest readings

 

 

An Ozone Exceedance  = .085 or greater

Is Our Current 3-Yr. Average Meeting the Ozone Standard?

Yes, if the 3-Yr Avg. (of 4th Highest readings) is  .084 or lower

A Violation of the standard = .085 or greater

 

 

 

1st highest
(date)

2nd highest
(date)

3rd highest
(date)

4th Highest (date)

2002-2004 Avg. of 4th Highs

CURRENT

3-YR AVG

 2003 -  2005

Avg. of 4th Highs

2005 4th  High Key Target
(2005's 4th highest needs to be no higher than this number)

2002
4th High

2003
4th High

2004
4th  High

 

Central (#1127 Tulsa)

0.091
1-Sep 

0.083
20-Jun 

0.83
21-Jun

0.082
29-Jul

0.076

0.076 

.106

0.080

0.080

0.068

 

NORTH    (#137 Skiatook)

 0.090
8-Aug

0.087
22-Jun

0.087
 2-Sep

0.083
20-Jun

0.079

0.079 

.100

0.083

0.083

0.071

 

South    (#174 Glenpool)

 0.085
29-Jul

0.077
14-Jul

0.073
30-Aug

0.072
20-May

0.079

0.076

.097

0.082

0.086

0.071

 

East   (#178 Lynn Lane)

0.092
21-Jun  

0.084
15-Jun  

0.082
6-Aug 

0.081
29-Jul

0.078

0.079


.097

0.080

0.084

0.073

 

West   (#144 Mannford)

0.096
29-Jul 

0.086
1-Sep 

0.079

 

31-Aug

0.076
20-Jun

N.A.

0.076

.102

N.A.

0.081

0.071

An exceedance of the 8-hr ozone standard is  .085 ppm or greater

 

Tulsa Area

 Ozone Alert! Days

Year

No. of Days

2005

13

2004

3

2003

8

2002

8

2001

8

2000

15

1999

17

1998

10

 

Explanation of the Ozone Standard

·       The new revised national ozone standard is an eight-hour averaged standard and is calculated by averaging data over a three year time period. This average is taken from the fourth highest eight-hour average at each monitor. A violation occurs when the 3-year average (of the 4th highest value) is greater than .084 ppm. We currently meet the standard, as the current 3-hear average at each monitor is less than .085 ppm.  The 3-year average (of the 4th highest values) is shown above in green.

·       To determine an ozone violation, the following example calculation is used: North (Skiatook) monitor’s 2002 4th highest reading was .083, its 4th highest in 2003 was .083, the 2004 4th highest for that monitor is .071.   Thus, .083 + .083 + .071 divided by 3 = .079 ppm, which meets the standard (the standard applies no rounding.)

·       A violation of the Ozone Standard means that our entire Metropolitan Statistical Area of seven surrounding counties including Tulsa County would be eligible for the EPA “Dirty Air List” or Non-Attainment.