Post-Winter Ozone SeasonPublic Meeting

June 26, 2019

Boulder Community Center

Boulder, WY

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28-Hr Avg O3 (ppb) www.WyVisNet.com 3/21/19 8:30 pm MDST

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0.020

0.030

0.040

0.050

0.060

0.070

0.080

0.090

0.100

0.110

0.120

8-H

ou

r O

zon

e D

esig

n V

alu

e (

pp

m)

3-Year Design Value Periods

8-Hour Ozone Design Value Comparisons

Upper Green River Basin-Boulder,WY Uintah Basin-Ouray, UT Los Angeles-South Coast Air Basin, CA Ozone NAAQS

4

0

2

4

6

8

10

12

14

16

18

20

22

24

Nu

mb

er o

f H

ou

rsNumber of 8-hr Ozone Averages for AQI Health Effect Levels

Boulder March 2019

Very Unhealthy

Unhealthy

Unhealthy for Sensitive Groups

Wintertime Ozone

Two of the few places

that experience

wintertime ozone

Wyoming’s Upper

Green River Basin

Utah’s Uinta Basin

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UGRB Progress

Concerned citizens

Environmental groups

Industrial operators

Local government

County government

State government

Federal government

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What do we know aboutozone and health?

EPA’s Integrated Science

Assessment (ISA)

● Assessment of the current

scientific studies and

knowledge about the effects of

ozone on public health

● Scientific basis for the

establishment of the most

current national air quality

standards for ozone

● New ISA coming out in 2020

https://www.epa.gov/isa/integrated-science-assessment-isa-ozone-and-related-photochemical-oxidants 7

What do we know aboutozone and health?

https://www.epa.gov/ground-level-ozone-pollution/health-effects-ozone-pollution

https://www.cdc.gov/air/ozone.html

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● Causal relationship between short-term ozone

exposure and respiratory health effects

● People most likely to experience health effects caused

by ozone include:○ Children

○ Older adults

○ People with asthma, emphysema, or other lung diseases

○ People who exercise or work outside

● Health effects can include:○ Cough, shortness of breath, wheezing, throat irritation

○ Asthma symptoms and increased need for asthma medication

○ Healthcare visits for respiratory symptoms

● Varying levels of evidence for effects on other organ

systems and effects of long-term exposure

8-hour Average

Ozone (ppb) Category EPA-Recommended Actions

0-54 Good None

55-70 Moderate There may be a small number of people who are unusually sensitive to this level of

ozone. Those people should consider reducing prolonged or heavy outdoor exertion.

71-85 Unhealthy for

sensitive groups

People with lung disease (such as asthma or emphysema), children, older adults, and

people who are active outdoors should reduce prolonged or heavy outdoor exertion.

86-105 Unhealthy People with lung disease (such as asthma or emphysema), children, older adults, and

people who are active outdoors should avoid prolonged or heavy outdoor exertion.

Everyone else should reduce prolonged or heavy outdoor exertion.

106-200 Very Unhealthy People with lung disease (such as asthma or emphysema), children, older adults, and

people who are active outdoors should avoid all outdoor exertion.

Everyone else should reduce outdoor exertion.

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Ozone and Occupational Health

http://wyomingworkforce.org/_docs/news/whatsnew/2018-11-14-occupational-ozone.pdf 10

Winter Ozone SeasonInter-Agency Approach

DEQ, DEQ-AQD, Department of Health,

Governor’s Office, Legislature

1,145+ staff hours DEQ-AQD January – March

Primary Point of Contact

AQD Ozone Team ozone@wyo.gov

Video segments

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Emissions OffsetThrough Permitting

-7000.0

-6000.0

-5000.0

-4000.0

-3000.0

-2000.0

-1000.0

0.0

Ton

s o

f Em

issi

on

s O

ffse

t/R

ed

uce

d

Tons of VOCs and NOx Emissions Offset/Reduced Through Permitting

* Emissions offset/reduced through May 1, 2019** Does not include emission reductions from the existing source rule

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Emissions Inventory

0

2

4

6

8

10

12

14

16

2011 2014 2015 2016 2017 2018

Ton

s P

er

Day

Year

Non-Road Mobile

Other Sources

Truck Loading

Completions & Workovers

Drill Rigs

Venting & Blowdown

Fugitives

Total Pneumatics

Dehydration Units

Tanks

Heaters

Production Site Engines

Compressor Station Engines

Feb-Mar UGRB Ozone Nonattainment AreaActual NOx Emissions

0

10

20

30

40

50

60

70

80

90

2011 2014 2015 2016 2017 2018

Ton

s p

er

Day

Year

Non-Road Mobile

Other Sources

Truck Loading

Completions & Workovers

Drill Rigs

Venting & Blowdown

Fugitives

Total Pneumatics

Dehydration Units

Tanks

Heaters

Production Site Engines

Compressor Station Engines

Feb-Mar UGRB Ozone Nonattainment AreaActual VOC Emissions

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Winter 2019 Forecasting

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5

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15

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25

Jan

. 01

Jan

. 03

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. 05

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. 09

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. 11

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. 19

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. 25

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. 27

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. 31

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. 28

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Sno

w D

ep

th (

Inch

es)

Boulder Rearing Station Ozone Season Snow Depth

2005 2006 2008 2011 2017 2019 Record

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OzoneContingency Plans

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71

7473

91

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79

85

100

105

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Ozo

ne

Co

nce

ntr

ati

on

(p

pb

)Daily Maximum 8-hr Ozone Averages

AQD's UGRB Monitoring Stations

Ozone Action Days Big Piney Boulder Daniel South Juel Spring Pinedale Gaseous 2015 Ozone NAAQS

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Daily Maximum 8-Hour Ozone Averages

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WDEQ Oilfield WasteDisposal Pond Study

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WDEQ 2017 Box Modeling Study

21NMOC = Non-Methane Organic Compounds

March 4, 2017

Compliance

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Compliance

Company Internal Audits

275+ facilities for 110 tpy reduction in

NOx/VOCs

288 Site Assessments / Inspections completed (Oct. 1, 2018 – May 13, 2019)

83.9% Initial Compliance Rate

7 Sites with NOV issued

Total number of facilities in the UGRB: 3,934

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Identifying Sites for Compliance Inspection

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Pinedale Anticline

Jonah

Ozone Designations

2008 Ozone NAAQS

(0.075 ppm / 75 ppb)

Marginal Nonattainment

Determination of Attainment

by July 20, 2015

2015 Ozone NAAQS

(0.070 ppm / 70 ppb)

Attainment / Unclassifiable

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Boulder Design Value

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Strategies Moving Forward

AQD Review and Evaluate 2019 Winter Ozone

Season Data

Refine Permitting, Monitoring, Forecasting

Enhance Inspection, Compliance, and Enforcement

actions

Potential opportunities for emission reductions:

DERA, VW, PAPO Board funding

Continue stakeholder dialogue

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