Background The Uinta Basin is one of several basins in the Intermountain West experiencing increased oil and gas activity Concerns arising about the potential cumulative air quality impacts Industry initiated a proactive study to inventory and model emissions in the Basin.
Uinta Basin Air Quality Study Purpose –To create a comprehensive technical study of air quality in the Uinta Basin, including the cumulative impacts of oil and gas development –Provide a management tool to the DAQ and BLM UBAQS will follow procedures similar to a NEPA- related far-field analysis –Modeling protocol –Air quality, visibility and deposition assessment at Class I and II areas.
UBAQS Schedule Task 1: Kick-Off Meeting (December 7, 2007) Task 2: Modeling Protocol –First draft January 21, 2008 –Second draft and Response-to-Comments March 17, 2008 Task 3: Interested Government Agencies Meetings January 24 and March 26, 2008 Task 4: Emissions Modeling –Fast Track Uinta Base Phase III O&G - Complete Task 5: Meteorological Data (2002, 2005 and 2006) Task 6: Air Quality Modeling (CMAQ) Task 7: Final Report and Meeting (September 2008)
UBAQS Key Components Comprehensive modeling of all sources –Oil and gas –On- and off-road vehicles –Biogenic –Boundary conditions –Meteorological data Integration of WRAP Phase III data Complements future monitoring Input from key stakeholders –BLM- State of Utah –EPA- Tribe –Forest Service- Industry
UBAQS Key Components CMAQ Photochemical Modeling Model Runs –2002, 2005, and 2006 to establish the baseline –Reasonable Foreseeable Development –Project oil and gas for 2012 –Model other emissions sources Using emissions from Continental Divide EIS for SW Wyoming boundary conditions.
WRAP Phase III Inventory Collaboration of IPAMS and the Western Regional Air Partnership Comprehensive inventory of sources from oil and gas exploration and production activities Builds on Phases I and II Identifies and characterizes differences between regional basins Refines future growth projections Provides a mechanism for future updates
Modeling Details Emissions will be developed for six scenarios: –Run 1: Current Year actual emissions for 2002, 2005 and 2006 used in CMAQ model evaluation –Run 2: 2006 Present Conditions used as baseline –Run 3: 2006 Baseline (Run 2) plus all NEPA projects in progress for which emission inventories have been developed –Run 3a: Run 3 with all new (post 2006) Uinta Basin O&G development emissions eliminated –Run 4: 2012 projected emissions extrapolate NEPA actions, oil and gas development, tar sands development, etc. –Run 4a: Run 4 with all new (post 2006) Uinta Basin O&G development emissions eliminated
Emission Inventory Sources in Phase III Study Complete source inventories for all exploration & production activities for the base year (2006) and two future years. Five criteria pollutants – NOx, SOx, PM, VOC, and CO Annual reporting mechanism
Basins in Phase III Study Denver-Julesburg Uinta San Juan Piceance Green River Powder River Paradox Williston Wind River Big Horn Great Plains
County Definition of Basins Whole county definition of basins – Uintah, Duchesne, Emery, Grand, Carbon Inventory data at the basin-, tribal- and county-level
Summary Provide accurate, credible scientific data Proactively address regional air quality issues Update the data annually Provide a basis for long-term planning