Ozone Monitoring in Wyoming

Cara CastenWyoming Dept. of Environmental

Quality – Air Quality DivisionMarch 10, 2004

Introduction

• Monitoring

• Data from both reference and non-reference method sites

• Photos of wildfire related ozone events

Ozone Monitor

Thunder Basin

Campbell County

CASTNetPinedale

CASTNetCentennial

Green River Basin

CASTNetYellowstone

Time series data for Green River Basin, Thunder Basin,

and Yellowstone

YNP Monthly O3 data 01/01/99-09/30/03

0

0.02

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0.14D

ec-9

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-99

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Mar

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O3

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1 hr. Monthly Avg. 1 hr. max 8 hr. max

1 hr. Standard

8 hr. Standard

Green River Basin Monthly O3 data 01/01/99-12/31/01

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0.02

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0.12

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y-9

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-99

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g-0

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-01

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v-0

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O3

Co

nc

. pp

m

1 hr. Monthly Avg. 1 hr. max 8 hr. max

1 hr. Standard

8 hr. Standard

Thunder Basin Monthly O3 data 05/04/01-09/30/03

0

0.02

0.04

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0.08

0.1

0.12

0.14A

pr-0

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Sep

-01

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Jul-0

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Dec

-02

May

-03

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-03

O3

Co

nc.

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1 hr monthly average 1hr. max 8 hr. max

1 hr. Standard

8 hr. Standard

Summary and Comparison of maximums from 2000, 2001,

and 2002

2000 Top 1 hr. and 8hr. MaximumsGreen River Basin YellowstoneDate Time Conc. (ppm) Date Time Conc. (ppm)

Top four 1 hour maximums

8/1/00 13:00 0.086 5/30/00 16:00 0.074*

8/3/00 14:00 0.086 7/31/00 17:00 0.073

8/1/00 12:00 0.084 8/15/00 13:00 0.073

8/1/00 14:00 0.083** 7/26/00 19:00 0.072**

Top four 8 hour rolling average daily maximums

8/1/00 11:00 0.081 7/31/00 14:00 0.070

8/3/00 10:00 0.079 5/30/00 12:00 0.069

7/29/00 11:00 0.078 8/1/00 13:00 0.067

7/30/00 10:00 0.074** 6/7/00 14:00 0.065**

*Value recorded 1 or more hrs. later in the day

** Value recorded 1 or more days later in the year

2001 Top 1 hr. and 8hr. Maximums

Green River Thunder Basin YellowstoneDate Time ppm Date Time ppm Date Time ppm

Top four 1 hour maximums

8/13/01 13:00 0.082* 8/8/01 11:00 0.081 7/2/02 17:00 0.074

8/13/01 15:00 0.080 8/25/01 14:00 0.080 4/2/02 9:00 0.073

8/6/01 16:00 0.079 8/25/01 15:00 0.079** 5/4/02 18:00 0.073

8/13/01 12:00 0.078 8/7/01 10:00 0.078 7/2/02 18:00 0.072

Top four 8 hour rolling average daily maximums

8/6/01 11:00 0.072 8/7/01 9:00 0.075 4/2/02 10:00 0.070

8/12/01 11:00 0.072 7/5/01 12:00 0.073 5/4/02 13:00 0.070

8/13/01 10:00 0.071 8/25/01 11:00 0.070 8/29/02 12:00 0.066

2/18/01 12:00 0.068 8/13/01 10:00 0.069 07/1/02 15:00 0.066

*Value recorded 1 or more hrs. later in the day

** Value recorded 1 or more days later in the year

2002 Top 1 hr. and 8hr. MaximumsThunder Basin Yellowstone

Date Time Conc. (ppm) Date Time Conc. (ppm)

Top four 1 hour maximums

7/19/02 15:00 0.096 7/2/02 17:00 0.074

7/19/02 13:00 0.093 4/2/02 9:00 0.073

7/19/02 16:00 0.092 5/4/02 18:00 0.073

7/19/02 12:00 0.088* 7/2/02 18:00 0.072

Top four 8 hour rolling average daily maximums

7/19/02 10:00 0.088 4/2/02 10:00 0.070

6/26/02 9:00 0.075 5/4/02 13:00 0.070

7/16/02 9:00 0.072 8/29/02 12:00 0.066**

7/18/02 11:00 0.071 07/1/02 15:00 0.066**

*Value recorded 1 or more hrs. later in the day

** Value recorded 1 or more days later in the year

2000 Top 1 hr. and 8hr. Maximums

Centennial Pinedale1

Date Time Conc. (ppm) Date Time Conc. (ppm)

Top four 1 hour maximums

6/1/00 3:00 0.11 7/29/00 16:00 0.083

6/1/00 4:00 0.10* 7/29/00 15:00 0.082*

6/1/00 6:00 0.097 8/1/00 11:00 0.082

6/1/00 2:00 0.092 7/29/00 17:00 0.081*

Top four 8 hour rolling average daily maximums

6/1/00 1:00 0.095 7/29/00 11:00 0.080

5/31/00 23:00 0.090 8/1/00 9:00 0.078

8/2/00 3:00 0.080 7/31/00 12:00 0.076

8/3/00 8:00 0.079 8/2/00 10:00 0.073*Value recorded 1 or more hrs. later in the day

** Value recorded 1 or more days later in the year

1 Data from CASTNet reported only 01/01/00 to 10/31/00

2001 Top 1 hr. and 8hr. Maximums

Centennial PinedaleDate Time Conc. (ppm) Date Time Conc. (ppm)

Top four 1 hour maximums

8/6/01 5:00 0.078* 4/29/01 13:00 0.075*

8/6/01 2:00 0.077 5/20/01 16:00 0.074

8/7/01 11:00 0.077* 5/6/01 10:00 0.074

8/7/01 12:00 0.076 8/6/01 16:00 0.074*

Top four 8 hour rolling average daily maximums

8/7/01 6:00 0.074 8/6/01 12:00 0.072

8/6/01 0:00 0.074 5/6/01 9:00 0.071

8/5/01 23:00 0.074 8/12/01 10:00 0.070

8/12/01 10:00 0.071 4/29/01 9:00 0.069**

*Value recorded 1 or more hrs. later in the day

** Value recorded 1 or more days later in the year

Thunder BasinOzone measurements and

corresponding images when wildfires burned in northeast

Wyoming

Thunder Basin July 5, 2001

12:00 pm

SVR = 87 km

O3 = 68 ppb

15:00 pm

SVR = 59 km

O3 = 77 ppb

July 19, 2002

10:15 am

SVR = 130 km

O3 = 78 ppb

11:45 am

SVR = 54 km

O3 = 86 ppb

July 19, 2002 (12:00-12:45 pm)

SVR = 23 km O3 = 88 ppb

July 19, 2002 (3:00-3:45 pm)

SVR = 58 km O3 = 96 ppb (highest O3 value in 2002)

Future Plans for WDEQ Ozone Monitoring in Wyoming

• Existing Monitors: WDEQ plans to continue monitoring at these sites.

• Proposed Monitoring: The Legislature is reviewing a request for funding for monitors in the following locations:

1. Jonah Field: Area of oil and gas development outside of Pinedale

2. Wamsutter: Area of oil and gas development in the south-central area of Wyoming

3. Newcastle: Downwind of coalbed methane development, on the border of South Dakota

Ozone Monitor

Thunder Basin

Campbell County

CASTNetPinedale

CASTNetCentennial

Green River Basin

CASTNetYellowstone

Future Monitor

Newcastle

Wamsutter

Jonah

Questions?

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