*** FINAL DATA ***

 

2010††††††††† 8-Hour Ozone††††††††† (updated through December 31, 2010)

 

AQS Number

 

Site Name

1st Max

8-Hour

(ppm)

Date 1stMax

8-Hour

2nd Max

8-Hour

(ppm)

Date 2nd Max

8-Hour

3rd Max

8-Hour

(ppm)

Date 3rd Max

8-Hour

4th Max

8-Hour

(ppm)

Date 4th Max

8-Hour

5th Max

8-Hour

(ppm)

Date 5th Max

8-Hour

08-001-3001

Welby

0.068

04/13

0.065

06/09

0.064

04/14

0.063

08/25

0.062

05/27

08-005-0002

Highland

0.077

06/28

0.076

07/15

0.076

07/16

0.075

08/15

0.074

04/13

08-005-0006

Aurora East

0.075

05/24

0.074

06/28

0.073

04/13

0.070

03/24

0.070

08/26

08-013-0011

S. Boulder Creek

0.082

06/24

0.073

06/09

0.072

04/13

0.072

06/28

0.071

04/14

08-031-0014

Carriage

0.073

07/01

0.071

06/19

0.071

06/24

0.069

04/13

0.069

05/24

08-031-0025

Denver - Animal Shelter

0.068

04/13

0.067

05/24

0.065

06/28

0.064

08/03

0.063

08/05

08-035-0004

Chatfield State Park

0.081

07/15

0.080

06/07

0.079

04/13

0.079

06/28

0.078

07/16

08-041-0013

Colo. Spgs. - Academy

0.080

04/13

0.074

05/24

0.069

06/28

0.068

07/05

0.067

10/01

08-041-0016

Manitou Springs

0.086

04/13

0.076

05/24

0.073

07/05

0.072

06/28

0.069

05/10

08-045-0012

Rifle Ė Health

0.069

05/29

0.067

04/15

0.066

04/14

0.066

06/23

0.064

05/09

08-059-0002

Arvada

0.077

06/24

0.077

07/15

0.075

06/09

0.075

06/17

0.075

06/19

08-059-0005

Welch

0.076

06/28

0.074

04/13

0.074

07/15

0.072

07/01

0.072

07/31

08-059-0006

Rocky Flats - N

0.083

06/24

0.080

09/03

0.077

08/26

0.076

06/09

0.075

05/27

08-059-0011

NREL

0.079

07/15

0.078

06/28

0.076

06/19

0.074

07/16

0.074

07/31

08-059-0013

Aspen Park

0.080

04/13

0.076

07/15

0.075

06/28

0.073

07/01

0.072

04/14

08-069-0007

** NPS - Rocky Mtn. NP

0.082

04/14

0.079

06/29

0.078

08/25

0.077

06/23

0.077

06/28

08-069-0011

Ft. Collins - West

0.077

06/24

0.075

04/14

0.075

07/01

0.075

08/03

0.074

06/16

08-069-0012

Rist Canyon

0.074

04/14

0.072

06/16

0.071

04/13

0.071

06/24

0.071

08/13

08-069-1004

Ft. Collins - CSU

0.068

04/13

0.067

06/04

0.066

04/14

0.066

07/01

0.065

06/24

08-077-0020

Palisade - Water

0.070

05/29

0.069

05/11

0.068

05/26

0.068

06/23

0.067

04/15

08-083-0006

Cortez

0.076

05/29

0.067

05/11

0.065

05/26

0.064

05/21

0.064

06/23

08-123-0009

Greeley - Weld Tower

0.078

04/13

0.078

06/24

0.074

04/14

0.073

06/28

0.073

08/03

 

NOTES: Values above the level of the 8-hour standard (0.075 ppm) are highlighted in yellow.

** Rocky Mtn. NP data through Dec. 31, 2010

 


 

The 8-hour ozone standard is written such that attainment is met if the 3-year average of the 4th maximum value from each of the 3 years is less than or equal to 0.075 ppm. Thus, by looking at the 4th maximum values from the previous 2 years, it is possible to see what the highest 4th maximum level for the current year could be and still remain in attainment of the standard.

 

This table provides information on the 4th maximum values for 2008, 2009, and 2010, the current 3-year average, and the maximum possible level for 2011 in order to remain in attainment of the ozone standard.

3-Year Average 4th Maximum Ozone Values

 

 

 

Site Name

 

 

 

AQS #

2008

4th Maximum

8-Hour Average

Value (ppm)

2009

4th Maximum

8-Hour Average

Value (ppm)

2010 (thru 12/31)

4th Maximum

8-Hour Average

Value (ppm)

2008 - 2010

3-Year Average

4th Maximum

Value (ppm)

2011

Highest Allowable

4th Maximum

8-Hour Average

Value (ppm)

Welby

08-001-3001

0.076

0.072

0.063

0.070

0.092

Highland

08-005-0002

---

0.069

0.075

---

0.083

Aurora East

08-005-0006

---

0.066

0.070

---

0.091

S. Boulder Creek

08-013-0011

0.076

0.073

0.072

0.073

0.082

Carriage

08-031-0014

0.072

0.063

0.069

0.068

0.095

Denver - Animal Shelter

08-031-0025

0.070

0.062

0.064

0.065

0.101

Chatfield State Park

08-035-0004

0.080

0.071

0.079

0.076

0.077

USAF Academy

08-041-0013

0.070

0.060

0.068

0.066

0.099

Manitou Springs

08-041-0016

0.072

0.064

0.072

0.069

0.091

Rifle - Health

08-045-0012

0.066

0.062

0.066

0.064

0.099

Arvada

08-059-0002

0.074

0.070

0.075

0.073

0.082

Welch

08-059-0005

0.073

0.070

0.072

0.071

0.085

Rocky Flats North

08-059-0006

0.079

0.079

0.076

0.078

0.072

NREL

08-059-0011

0.076

0.068

0.074

0.072

0.085

Aspen Park

08-059-0013

---

0.067

0.073

---

0.087

NPS - Rocky Mtn. Natíl Park

08-069-0007

0.076

0.068

0.077

0.073

0.082

Fort Collins - West

08-069-0011

0.076

0.073

0.075

0.074

0.079

Rist Canyon

08-069-0012

---

0.069

0.071

---

0.087

Fort Collins - CSU

08-069-1004

0.066

0.063

0.066

0.065

0.098

Palisade - Water

08-077-0020

0.070

0.064

0.068

0.067

0.095

Cortez

08-083-0006

0.064

0.064

0.064

0.064

0.099

Greeley - Weld Tower

08-123-0009

0.073

0.067

0.073

0.071

0.087

NOTE: An area is considered to be in attainment of the National Ambient Air Quality Standard when the 3-year average of the annual 4th highest daily maximum 8-hour ozone concentration at a site is less than or equal to 0.075 ppm.

 

NOTES: Values above the level of the 3-year average 4th-maximum 8-hour standard are highlighted in red.