robin segall us eparobin segall us epa office of air quality planning and standards measurement...
TRANSCRIPT
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Robin SegallUS EPAOffice of Air Quality Planning and StandardsMeasurement Technology Group
Emission Inventory Conference Baltimore, MDApril 15, 2009
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How did OAQPS get involved?Region 8 requested OAQPS assistance with understanding the VOC emissions from the upstream oil and gas production due to public concern and ozone exceedencesEmissions sources and activities for this sector are extremely difficult to measure due to the complex nature, quantity and varietyAlmost no VOC data exists for this sector from actual field testing
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EPA TeamJason DeWeesDennis Mikel – MTGEben Thoma, PhD Buddy Thompson – ORDPaul Groff – ORDCindy Beeler – Region 8Michael Copeland – Region 8
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Historical Oil and Gas Productionfrom 1900‐2005
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Weld County, CO – O&G Activity
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Garfield/Rio Blanco County, CO – O&G Activity
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Emission Sources and ActivitiesDrillingWell CompletionWell WorkoversProduction Well PadsProduced Water TreatmentUnloading/Loading and Transport of Oil, Gas, and WaterMobile Sources
Drill Rig ‐ CO
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PollutantsGreenhouse Gases (Methane and Carbon Dioxide)Volatile Organic Compounds (Air Toxics and Ozone Precursors)Nitrogen OxidesParticulate Matter
Production Well Pad – CO
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Instruments and MethodsEPA Other Test Method 10 (OTM 10)
Open Path FTIRBroadband instrument (Multiple Compounds at once)Monostatic (Source and Detector in one instrument)Mounted on Orbital Scanner
Summa CanistersTO – 14A – GC/FID TO – 15 – GC/MS
Met StationFLIR Camera
FLIR Camera
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Optical Remote Sensing (ORS)Path‐Averaged Concentration Data
Nonlocalized Emission Source
Open Path FTIR Retroreflector
Average of the concentration over the entire beam path length
Not directly comparable to point and flux box measurements
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Other Test Method 10Measure multiple path integrated concentrations (PAC)Measure wind speed and directionOptimization algorithms used to reconstruct mass equivalent plume in a plane downwind from source and generate concentration “maps”Plane integrated concentration x wind speed (taking angle into account) = emission mass fluxCollaboration of DoD, ORD, ARCADIS and OAQPSwww.epa.gov/ttn/emc/methods.html
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OTM 10 Vertical Radial Plume Mapping
Beam Path Retro Reflector Open Path
FTIR
Mean Wind Direction
Area Source
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OTM10 Enhancement -Four Corners Technique Wind
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OTM10 Enhancement -Four Corners Technique Wind
4-Corners Technique is more forgiving to wind direction changes
Set up and leave configuration for a long period of time
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Produced Water Evaporation Pit
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Produced Water Evaporation Pit
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Produced Water Evaporation Pit
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Produced Water Treatment Facility
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Produced Water Treatment Facility (Four Corners)
Retroflectors
Scanning OP FTIR
VRPM Optical Paths
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Produced Water Treatment Facility
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Produced Water Treatment Facility
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Where do we go from here?
Finish Report and QA Clearance ProcessProvide States and Industry with guidance on possible future OTM‐10 testing for produced water treatment facilitiesPlan future testing focused well production pad and drilling emissions
Well Production Pad ‐ CO
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Questions?
Production Well Pad Condensate Tank next to a Bible School