IPIECA: CCE-4 / DTF: DTF-8, DTF-11 / SASB: EM-EP-110a.1, EM-EP-110a.2, EM-EP-110a.3, EM-EP-140a.1, EM-EP-540a.1 / TCFD: TCFD-M1, TCFD-M2 / GRI: 303-3, 305-2, 306-1, 306-2

Protecting natural resources is not only the right thing to do, it is good business. SWN operates responsibly and strives to reduce emissions and improve energy efficiency. Our vision is for the safe and responsible development of America’s abundant supply of natural gas to remain an essential part of the mix in a lower-carbon energy future. We take a science-based approach to achieving this vision, actively participating in academic and industry research to develop innovative environmental solutions. We maintain positive and productive relationships with federal and state regulatory agencies, and it is our practice to conform our operations to the spirit – not just the letter – of environmental regulations.

ENVIRONMENTAL METRICS201820192020
Tier 1 and 2 Unplanned Discharges (Spills)1 total volume in barrels
6949536
Water Use and Recycling Metrics2201820192020
Freshwater Withdrawl by Source3 millions of barrels
Surface Water27.5637.5840.50
Ground Water0.180.060.26
Water Utilities0.160.260.08
Total27.937.940.9
Total Water Sourced millions of barrels32.4242.8050.30
Total Volume that Is Recycled or Reused Downhole4,5 millions of barrels5.307.519.48
Total Water Sourced that Is Recycled Water6 %16.3%17.6%18.9%
Flowback and Produced Water that We Recycled7,8 %41.05%78.10%94.90%
Cumulative Conservation and Operational Offsets9 millions of barrels72.4069.5057.80
AIR METRICS10201820192020
Absolute Greenhouse Gas (GHG) Emissions11 thousand metric tons CO2e4375161,057
GHG Emissions Intensity12 mt/MBOE CO2e/MMBTU gas produced0.570.520.86
Methane Leak/Loss Rate13 % (SWN production operations only)0.056%0.055%0.075%
Total Methane Emitted14 mt (SWN production operations only)7.108.9415.86

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  1. A Tier 1 spill is an unintentional release of a regulated or prohibited substance impacting a state/federal jurisdictional water body, an unintentional release of a regulated substance at or above its federal reportable quantity, or an unintentional air impact at or above a state/federal reporting threshold. A Tier 2 spill is an unintentional release of a regulated or prohibited substance impacting land off location or an unintentional air impact below a state/federal reporting threshold, to include only natural gas releases of 235 thousand cubic feet (Mcf) or more (see the Land page for further discussion).
  2. The water use, water recycling and water disposal data in this section cover our drilling, completions, production and midstream services. None of the data includes our sand plant. All water used at our sand plant (except for drinking water) is sourced on location from the facility’s lake and four groundwater wells. This water is recirculated for reuse or, for a small portion, returned to the environment by evaporation. Finally, numbers in the tables may not sum, due to rounding.
  3. Water data collection depends on records maintained for internal benchmarking or reporting to regulatory agencies. Volumes purchased from commercial, third-party water suppliers are included under "water utilities" unless it is known that the supplier is withdrawing water directly from a source specifically for use in oil and gas operations and not for human consumption as a utility. "Surface water" can include natural ponds, lakes, rivers and freshwater impoundments. No water was pulled from isolated wetlands or oceans for the years in scope.
  4. These volumes include flowback and producted water, encountered water during drilling and rainwater naturally captured in facility containments. Additionally, reuse water as calculated contains drilling water reused, recycled flowback and produced water supplied to other operators for reuse, and produced water from other operators reused by SWN.
  5. This volume includes SWN’s reuse of SWN produced water, reuse of produced water from other operators, and reuse of SWN produced water by other operators.
  6. The percentage in 2020 includes flowback and produced water provided from other operators to SWN and used in SWN’s hydraulic fracturing operations.
  7. This data includes the Sandwash Basin in Colorado, which had no activity and no recycling opportunities in any of the years reported.
  8. This percentage includes the volume of water reused by SWN that SWN generates, the volume of SWN generated water that is reused by other operators and the volume of water generated by other operators that is reused by SWN.
  9. Conservation and operational offsets are from all basins. Operational offsets include rainwater naturally captured in facility containment that is returned to the environment and surface water held in freshwater impoundments that are returned to the environment.
  10. The emissions intensity and leak/loss rate data are based on gross operated production. The GHG calculations – reported in carbon dioxide equivalents, or CO2e – include CO2, CH4 (methane) and N2O (nitrous oxide). Certain GHG emissions are based on U.S. Environmental Protection Agency (EPA) emissions factors. The production CO2e emissions reflect emissions reported to the EPA under Subpart W of the Greenhouse Gas Mandatory Reporting Rule (GHGMRR). Approximately 99 percent of our production and midstream operations are subject to reporting under Subpart W. In accordance with EPA greenhouse gas reporting requirements, the legacy Montage Resources assets acquired in 2020 are reported for the entire year, not the portion of the year that the assets were owned by SWN. For 2020, the greenhouse gas intensity and methane leak/loss rate for legacy Montage assets were greater than SWN legacy assets. Following the close of the acquisition, SWN identified and began implementing emission reduction initiatives on legacy Montage assets.
  11. Midstream assets are not included for the data in year 2018, 2019 and 2020 due to divestiture of the assets in 2018.
  12. The metric used to calculate the intensity ratio is millions of standard cubic feet (MMscf) of gas. We assumed a 1,000 BTU/scf heating value of natural gas for emissions intensity. The GHG emissions included in the intensity ratio are all direct (Scope 1).
  13. The methane leak/loss rate (mass percentage) is calculated by dividing the gigagrams of methane emissions by the oil and gas gross production (cubic feet converted to gigagrams).
  14. The gigagrams of methane emitted reflect the Subpart W reported emissions revised (reduced) to reflect actual fugitive equipment leaks observed as a result of our leak detection and repair program. A gigagram is equivalent to a thousand metric tons.