Introduction
The WSAQS used the Sparse Matrix Operator Kernel Emissions (SMOKE) processing system version 3.5.1 to prepare emissions inputs for photochemical grid models (PGMs). The WSAQS 2011 version B (WSAQS2011b) emissions modeling platform consists of data and software to estimate air emissions fluxes that best represent the conditions in the western U.S. during 2011. The base 2011 modeling period is annual, and included a model spin-up period from December 16 to December 31, 2011. The modeling domain includes a 36 km continental US (CONUS) domain with a 12 km nest over the western U.S. and a 4-km nest the covers the states of Colorado, Utah, and Wyoming.
The following sectors were used to represent air pollutant emissions for the WSAQS:
- Aircraft/locomotive/marine (ALM)
- Off-road mobile (Nonroad)
- On-road mobile (Onroad)
- Non-point/Area (Nonpoint)
- Fugitive Dust
- Fertilizer
- Livestock
- Residential Wood Combustion (RWC)
- Area oil and gas (Area O&G)
- Point oil and gas (Point O&G)
- Continuous Emission Monitor (CEM) point (EGU Point)
- Non-CEM point (NonEGU Point)
- Offshore shipping (Offshore)
- Fires (Fire)
- Canada and Mexico sources (Non-US)
- MEGAN biogenics (Biogenic)
- Windblown dust (WBD)
- Sea salt
- Lightning
Details of the sources and nature of these emissions data are provided in the 3SAQS 2011 Modeling Protocol.
2011 Phase II Oil and Gas Emission Inventories and Projection Factors
The table below includes links to spreadsheets with the base year (2011)
and projection year (2020) 3SAQSWSAQS Phase
III oil and gas inventories. Brief descriptions of the inventory data are supplemented by additional details of these data in each spreadsheet.
In
| Basin | 2011 | Description |
Big general,Horn | xls | For 2011, area source emissions were directly provided by Wyoming Department of Environmental Quality (WYDEQ) for all Wyoming counties. Emissions outside Wyoming counties are excluded from the inventory due to lack of information on activity projectionsin Montana counties for eachthis basinbasin. The point source emissions were madeobtained from WYDEQ for the calendar year 2011. |
| Denver-Julesberg | xls | 2008 WestJump survey-based emissions were projected to 2011 based on statisticalestimated analysischanges in activity as well as control due to regulations for all source categories. Due to lack of historicalbasin activityspecific fracing data, emissions from this category were added to the inventory based on the average tons/spud fracing emissions from the Uinta, Piceance and South San Juan basins. Activity data were obtained from the IHS database for the calendar year 2020.2011. Each source category was assigned the projection estimate for the activity category to which it was most closely associated. For example, drill rig activity would be most closely associated and therefore assigned the activity projection of new spuds. EmissionThe projectionspermitted alsoAPEN includesources emissions were directly obtained from the effectsColorado Department of regulationsPublic whichHealth requireand controlsEnvironment beyond(CDPHE) those in place infor the 2011calendar baseyear year.
Basin | 2011 | 2020 | Description |
|---|
Big Horn | xls | In Progress | | Denver-Julesberg | xls | In Progress | 2011. | | North San Juan | xls | In Progress | Piceance | xls | In Progress | | Powder River | xls | In Progress | | Southwest Wyoming | xls | In Progress | | South San Juan | xls | In Progress | | Uintah | xls | | 2008 WestJump survey-based emissions were projected to 2011 based on estimated changes in activity as well as control due to regulations. Due to lack of basin specific fracing data, emissions from this category were added to the inventory based on the average tons/spud fracing emissions from the Uinta, Piceance and South San Juan basins. Activity data were obtained from the IHS database for the calendar year 2011. Each source category was assigned the projection estimate for the activity category to which it was most closely associated. For example, drill rig activity would be most closely associated and therefore assigned the activity projection of new spuds. The permitted APEN sources emissions were directly obtained from the Colorado Department of Public Health and Environment (CDPHE) for the calendar year 2011. | | Piceance | xls | 2008 WestJump survey-based emissions were projected to 2011 based on estimated changes in activity as well as control due to regulations. Fracing engine emission estimates were added to the inventory based on representative engine data from the Colorado Air Resources Management Modeling Study (CARMMS) oil and gas emission inventory. Activity data were obtained from the IHS database for the calendar year 2011. Each source category was assigned the projection estimate for the activity category to which it was most closely associated. For example, drill rig activity would be most closely associated and therefore assigned the activity projection of new spuds. The permitted APEN sources emissions were directly obtained from the Colorado Department of Public Health and Environment (CDPHE) for the calendar year 2011. | | Powder River | xls | For 2011, area source emissions were directly provided by the Wyoming Department of Environmental Quality (WYDEQ) for all Wyoming counties. Area source emissions outside Wyoming counties for 2011 were projected from 2008 WestJump EI based on estimated changes in activity as well as control due to regulations. Activity data were obtained from the IHS database for the calendar year 2011. The point source emissions were obtained from WYDEQ and Environmental Protection Agency (EPA). Montana point source emissions were projected from 2008 WestJump EI based on estimated change in activity. | | Southwest Wyoming | xls | For 2011, area source emissions were directly provided by the Wyoming Department of Environmental Quality (WYDEQ) for all Wyoming counties. Area source emissions outside Wyoming counties for 2011 were projected from 2008 WestJump EI based on estimated changes in activity as well as control due to regulations. Activity data were obtained from the IHS database for the calendar year 2011. The point source emissions were obtained from WYDEQ for the calendar year 2011. | | South San Juan | xls | 2008 WestJump survey-based emissions were projected to 2011 based on estimated changes in activity as well as control due to regulations. Fracing engine emission estimates were added to the inventory based on the representative engine data from the BLM Mancos Shale Emission Inventory. Activity data were obtained from the IHS database for the calendar year 2011. Each source category was assigned the projection estimate for the activity category to which it was most closely associated. For example, drill rig activity would be most closely associated and therefore assigned the activity projection of new spuds. The title V permitted sources emissions were directly obtained from the New Mexico Environment Department and Part 71 sources emissions from the Environmental Protection Agency (EPA) for the calendar year 2011. | | Uintah | xls | 2008 WestJump survey-based emissions were projected to 2011 based on estimated changes in activity as well as control due to regulations for most of the source categories. Data obtained from Environmental Protection Agency (EPA) minor source registrations were used to develop tribal emissions for pneumatic pumps, heaters, artificial lift engines, oil tanks, condensate tanks, and condensate truck loading. Fracing engine emission estimates were added based on the representative engine data derived from NEPA EIS oil and gas emission inventories from oil and gas developments in the Uinta Basin. Activity data were obtained from the IHS database for the calendar year 2011. Each source category was assigned the projection estimate for the activity category to which it was most closely associated. For example, future drill rig activity would be most closely associated and therefore assigned the activity projection of new spuds. The permitted sources emissions were obtained from the UintahUtah Department of Environmental Quality (UTDEQ) and Environmental Protection Agency (EPA) for the calendar year 2011. Per agreement with the Three-State Air Quality Modeling Study (3SAQS) technical committee, for the Phase I oil and gas emission inventories, emission controls were applied to survey-based sources, but not for emissions provided by state agencies.
Per agreement with the Three-State Air Quality Modeling Study (3SAQS) technical committee, for the Phase I oil and gas emission inventories, emission controls were applied to survey-based sources, but not for emissions provided by state agencies. | | Wind River | xls | xls | For 2011, area source emissions were directly provided by the Wyoming Department of Environmental Quality (WYDEQ) for Non-tribal land. Area source emissions on tribal land were projected to 2011 from 2008 WestJump EI based on estimated changes in activity as well as control due to regulations. Activity data were obtained from the IHS database for the calendar year 2011. The WYDEQ emission inventory included a small fraction fraction of wells identified as being on tribal land; adjustments were made to projected tribal emissions to avoid double counting. The permittedpoint source emissions were obtained from WYDEQ and Environmental Protection Agency (EPA).
Controls were applied to only drilling and workover engines emissions as consistent with other basins. |
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