Tulsa Metropolitan Area 2007 Season-End Ozone Score Card
Tulsa's ozone design value is .080 ppm, which remains

in compliance with the EPA's National Ambient Air Quality Standard

  2007 Total Number of Days Standard was Exceeded:   2         2007 Total Number of Monitor Exceedances:  3         

2007 Ozone Alert! Days:  Aug. 2, Aug. 3, Aug. 14, Aug. 15, Aug 16

Monitor

Site

2007 8-Hr. Ozone Averages
(1st through 4th highest readings)

*4th Highest at end of each season  is averaged with the prior 2-yrs 4th highest readings.  (2007 + 2006 + 2005  4th highest readings divided by 3)

An Ozone Exceedance= .085 or greater

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

Yes

A Violation of the standard = (3-yr avg of ) .085 or greater

 2008 4th  High ‘TRIGGER’
A VIOLATION occurs IF 2008's 4th highest is this value or higher

1st Highest
date

2nd Highest
date

3rd Highest
date

*4th Highest date

2005 – 2007

3-YR Avg

 of 4th Highs

2008

“Trigger”

*4th Highest Ozone Value

*2004
4th High

*2005
4th High

*2006
4th High

 

Central (#1127 Tulsa)

0.078
15-Aug

0.075
22-Sep

0.074
14-Aug

0.072
1-Sep

0.078

 

0.104

0.068

0.082

0.081

 

NORTH   (#137 Skiatook)

0.080
3-Aug

0.075
3-Sept

0.075
 22-Sep

0.073
25-Jul

0.080

0.098

0.071

0.083

0.084

 

South    (#174 Glenpool)

 0.092
13-Aug

0.072
29-Aug

0.070
15-Aug

0.069

21-Apr

0.073

0.108

0.071

0.072

0.078

 

East   (#178 Lynn Lane)

0.095
14-Aug

0.094
13-Aug

0.078

15-Aug

0.075

2-Aug

0.080

0.096

0.073

0.081

0.084

 

West   (#144 Mannford)

0.080
22-Sept

0.072
21-Apr

0.072
15-Aug

0.071
2-Aug

0.077

0.099

0.071

0.076

0.085

All values are in ppm (parts per million)  An exceedance of the 8-hr ozone standard is  .085 ppm or greater
NOTE: all readings are preliminary and unofficial until ODEQ-EPA QA/AQ Process

 

 

 

 

 

 

 

 

 

 

 

 

 

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-year 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 2003 4th highest reading was .083, its 4th highest in 2004 was .071, the 2005 4th highest for that monitor is  .083.   Thus, .083 + .071 + .083 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. 

 

 

 

 

Tulsa Area
Ozone Alert! Days

Year

No. of
Days

2007

5

2006

12

2005

13

2004

3

2003

8

2002

8

2001

8

2000

15

1999

17

1998

10