If you have questions regarding these inventories, please contact:
Tyler Ward
Air Emissions Inventory Supervisor
307-777-7017
tyler.ward@wyo.gov
Mark Gilbert
307-777-3366
mark.gilbert1@wyo.gov
Ryan Beavers
307-777-7872
ryan.beavers@wyo.gov
The Wyoming Department of Environmental Quality monitors and collects actual emissions data in accordance with federal regulations. Inventory data is uploaded to the appropriate database after all reporting facilities have submitted data to the AQD and that information has been reviewed. Emissions data may be updated when new information is received.
The files available below also contain actual emission data and are current as of the date posted. Please contact the AQD’s Air Emissions Inventory Supervisor, Tyler Ward at 307-777-7017 for inquiries regarding emissions data.
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Actual emissions inventories and production information is required of both major and minor, oil and gas sources in the Upper Green River Basin (UGRB) in support of efforts to reduce elevated ozone levels in the area. This information is collected on an annual basis.
Annual emissions inventories for the previous year will be due no later than April 30th of the current year.
Winter time emissions inventories (covering operations during February 1st – March 31st) will be due no later than June 30th of the current year.
Facilities classified as the following facility types in IMPACT can be reported on the Excel document which will be referred to as the Production EI file:
- Single Well
- Single Well Routed to Pad/Central Gathering
- Pad/Central Gathering
- Dehydration
- Storage Tank Battery
- Pipeline Station
The Production EI files are emailed to companies approximately 45 days after the end of the reporting season (February 15th for annual reports and May 15th for Winter reports). The Division generates the Production EI files by pulling emission unit data from IMPACT or using some standard assumptions. Based on the operating parameters returned for these units the Division will calculate emissions for the facilities. This includes running a ProMax model to calculate tank, dehydration and truck loading emissions. Due to the highly variable and temporary nature of workover and completion engines at these facilities, the Division does require companies to calculate those emissions.
All other facilities (i.e. compressor stations, gas processing facilities, water injection facilities, etc.) should be reported directly through the IMPACT portal or using one of two “Compressor Station and Pipeline Emissions Inventory” forms available below.
The “Emission Factor Groups” Excel file available below can be used to determine which emission factor group oil and gas facilities belong to. The AQD has developed 55 different field and formation specific emission factor groups. Emission factors have been generated for roughly 18 of the 55 groups. Within this Excel file is a pivot table designed to provide a list of wells by operator that are in each emission factor group. Further instructions can be found on the “Instructions” tab of this Excel file.
For questions concerning whether a facility is located within the UGRB designation area, please contact Tyler Ward at 307-777-7017 or tyler.ward@wyo.gov and provide a legal description (lat/long coordinates) of the location.
Please note that the Excel forms available below must be completed using Microsoft Excel 2007 or a newer version of this software. Also, please be aware that the files below can exceed 5 MB in size!
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Sources subject to the emissions trading program for SO2 under WAQSR Chapter 14, Section 3, for Regional Haze, are required to submit annual SO2 emission inventories.
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