Oil & Gas Emissions Modeling

Introduction

Inventories

Inventory Summaries

The table below includes links to spreadsheets with the base year (2011) WSAQS Phase II oil and gas inventories. Brief descriptions of the inventory data are supplemented by additional details of these data in each spreadsheet.

Download all of the base year (2011) spreadsheets (zip).
Download all of the future year (2020) spreadsheets (zip).

Table 1. WAQS 2011 Phase II Oil and Gas Emission Inventory Spreadsheets

Basin	2011	Description
Big 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 in Montana counties for this basin. The point source emissions were obtained from WYDEQ for the calendar year 2011.
Denver-Julesberg	xls	2008 WestJump survey-based emissions were projected to 2011 based on estimated changes in activity as well as control due to regulations for all source categories. 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.
North 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. 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.
Uinta	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 Utah Department of Environmental Quality (UTDEQ) and Environmental Protection Agency (EPA) for the calendar year 2011.
Wind River	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 point source emissions were obtained from WYDEQ and Environmental Protection Agency (EPA).

SMOKE Input Files

Download base year (2011) survey-based (nonpoint) inventories in SMOKE FF10 format (tar.gz).
Download base year (2011) permitted (point) inventories in SMOKE FF10 format (tar.gz).
Download future year (2020) survey-based (nonpoint) inventories in SMOKE FF10 format (tar.gz).
Download future year (2020) permitted (point) inventories in SMOKE FF10 format (tar.gz).

Chemical Speciation

} WAQS Oil and Gas VOC speciation profiles.

Spatial Allocation (Gridding)

} WAQS Oil and Gas spatial surrogates.
} WAQS Oil and Gas SCC-surrogate cross-reference file.

Temporal Allocation