historical trends in data and studies for the upper green river basin (ugrb) · 2015-05-21 ·...
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Historical trends in data and studies for the Upper Green River Basin
(UGRB)
2015 Western Air Quality Modeling WorkshopMay 14, 2015
Darla J. PotterWDEQ – Air Quality Division
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11 Years of UGRB Ozone Efforts2005•Elevated Ozone Monitored, 1st Time
2006•Ozone Monitor Comparison
•Initial VOC Samples2007•DEQ Collaboration & Research•DEQ & Industry Efforts
2008•DEQ Collaboration & Research
•DEQ & Industry Efforts2010
•DEQ Collaboration & Research•DEQ & Industry Efforts
2012•DEQ Formation of Task Force
•AQD Evaluation of Recommendations
2009•DEQ Collaboration & Research•DEQ & Industry Efforts
2011•DEQ Collaboration & Research•DEQ & Industry Efforts
2014•Ozone Strategy 4/22/14
•Ozone Strategy 10/21/14
2013•Ozone Strategy 3/11/13•Ozone Strategy 9/24/13
MarginalAttainmentJuly 20, 2015
MarginalNonattainmentDesignationJuly 20, 2012
NonattainmentRecommendation
March 2009
WDEQ‐AQD April 2015
2015•Ozone Strategy 4/28/15
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Upper Green River BasinOzone Nonattainment Area
Sublette County, Portion of Lincoln County,Portion of Sweetwater County
March 2009 Ozone NAA Recommendation
Final NAA Designation Marginal Effective July 20, 2012
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Winter Ozone Forecasting
Daily Forecasts January through March 7 days a week by WDEQ-AQD staff and contract meteorologists Based on weather forecasts: wind, snow depth and cover, pressure
fronts, cloud cover Winter Ozone Updates
Expected conditions for today, tomorrow, extended (day 3) Information for the public to make decisions about outdoor activity
Ozone Action Days Issued in advance (24-hrs) when forecast weather conditions appear
favorable for the formation of elevated ozone the following day Implementation of Ozone Contingency Plans
Voluntary plans to utilize short-term emission reduction measures
Everyone is encouraged to voluntarily reduce emissions6
2006 2007 2008 20092005 2010
Winter ozone first monitored at Jonah and Boulder Stations
Focus on precusorsGaseous Nitrogen species and photolysis rateMesonets; VOC’s/aldehydesOther trace gasesMini‐SODAR/sondes
Full‐scale measurement with conducive ozone conditionsMesonets; VOC’s/aldehydesPlane/sondes Addition of mini‐SODAR
Focus on precursors and nitrogenHONOAddition of Methane/non‐methane at Boulder Mesonets; VOC’sMini‐SODAR
Ozone measurement comparisonCheck for instrument interferenceVOC measurements
First full‐scale measurementMesonetsVOC’s/aldehydesUpper air/plane/tetheredsondes
UpperGreenWinterOzoneStudies
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2012 2013 20142011 Future
Focus on vertical/spatial distribution of precursorsTall tower/balloon multi‐level precursorsHONO; NOy; true NO2
Speciated PM2.5
Mesonets; VOC’sMini‐SODAR
Focus on spatial VOC distributionMesonetsVOC at 8 sitesJonah trailer with NOx and VOC’s
Ongoing MonitoringTracking changes in VOC compositionOngoing Long‐term ozone monitoring
Scaled back spatial distribution of precursorsMesonets; VOC’sJonah trailer with NOx and VOC’sMini‐SODAR
Scaled back VOC and Formaldehydedistibution MesonetsVOC/HCHO at 6 sitesJonah trailer with NOx and VOC’s
Non‐Attainment RequirementsAwaiting further requirements from EPA on Photochemical Assement Monitoring (PAMS) for non‐attainment areas
2015
VOC and Formaldehydedistibution MeteorologyVOC/HCHO at 6 sites
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Collaboration and ResearchModeling Studies Box Model of 2006 Winter Ozone Episode Conceptual Model of Winter Episodes in Southwest Wyoming 2008 Winter Ozone Box Model Study Meteorological Modeling: Development of High-Resolution
3-Dimensional Wind Fields using CALMET CALGRID Ozone Modeling Analyses Meteorological Modeling, to support photochemical grid
modeling using WRF Modeling analysis of precursor (NOx & VOC) concentration
fields Photochemical Grid Modeling
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Collaboration and ResearchOther Studies Upper Green Winter Ozone Study (UGWOS): 2007, 2008,
2009, 2010, 2011, 2012, 2013, 2014, 2015 Screening Health Risk Assessment, Sublette County Evaluation of meteorological conditions during UGWOS
2011 Climatology study of long-term meteorological phenomena Evaluation and refinement of WDEQ forecasting checklist Reactivity study of individual VOCs specific to UGRB EPA Geospatial Measurement of Air Pollution and diffusion
tube monitoring studies: 2011, 2012, 2013
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Collaboration and ResearchOther Studies (cont.) Pinedale Anticline Spatial Air Quality Analysis Emission Inventory refinement through development of
field-specific emissions factors for flashing emissions WY Department of Health epidemiologic study Microscale Wind Survey Evaluation of Winter Chemistry at Boulder Mobile Monitoring Assessment Produced Water Tank Study
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Collaboration and ResearchOther Studies (cont.)
Ongoing UGWOS Statewide Engine Study Oil & Gas Production Site Emissions Inventory
Study Produced Water Ponds Study
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Questions
Darla Potter, AQRM Program Manager darla.potter@wyo.gov
Cara Keslar, Monitoring Section Supervisor Andrew Keyfauver, New Source Review Permit Engineer Josh Nall, New Source Review Supervisor Adam Deppe, Air Quality Planning Meteorologist Dan Sharon, Ambient Air Monitoring Project Manager
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