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 Data

Tier 1 and 2 Unplanned Discharges (Spills)1

total volume in barrels

250
500
751
1001
1251
2015
1,251
2016
5
2017
337
2018
694
2019
95
Year Value - total volume in barrels
2015 1,251
2016 5
2017 337
2018 694
2019 95

Water Use and Recycling Data2

Fresh Water Withdrawal by Source3

millions of barrels

7.22
14
22
29
36.1
2015
30.35
2016
11.63
2017
30.18
2018
27.9
2019
36.1
Surface Water
Groundwater
Water Utilities
Year Group Value - millions of barrels
2015 Surface Water 29.68
Groundwater 0.12
Water Utilities 0.55
Total 30.4
2016 Surface Water 11.46
Groundwater 0.05
Water Utilities 0.12
Total 11.6
2017 Surface Water 29.82
Groundwater 0.15
Water Utilities 0.21
Total 30.2
2018 Surface Water 27.56
Groundwater 0.18
Water Utilities 0.16
Total 27.9
2019 Surface Water 35.78
Groundwater 0.06
Water Utilities 0.26
Total 36.1

Total Water Sourced

millions of barrels

10
20
30
41
50.68
2015
50.68
2016
17.27
2017
35.02
2018
32.42
2019
42.8
Year Value - millions of barrels
2015 50.68
2016 17.27
2017 35.02
2018 32.42
2019 42.8

Total Volume that Is Recycled or Reused Downhole45

millions of barrels

4.102
8.204
12
16
20.51
2015
20.51
2016
5.64
2017
4.85
2018
5.30
2019
7.51
Year Value - millions of barrels
2015 20.51
2016 5.64
2017 4.85
2018 5.30
2019 7.51

Total Water Sourced that Is Recycled Water6

%

20
40
60
80
100
2015
40.6%
2016
36.7%
2017
16.3%
2018
16.3%
2019
17.6%
Year Value - %
2015 40.6%
2016 36.7%
2017 16.3%
2018 16.3%
2019 17.6%

Flowback and Produced Water that We Recycled78

%

20
40
60
80
100
2015
92.40%
2016
43.40%
2017
39.86%
2018
41.05%
2019
78.10%
Year Value - %
2015 92.40%
2016 43.40%
2017 39.86%
2018 41.05%
2019 78.10%

Cumulative Conservation and Operational Offsets9

millions of barrels

15
31
46
62
77.03
2015
21.70
2016
53.14
2017
67.33
2018
72.40
2019
77.03
Year Value - millions of barrels
2015 21.70
2016 53.14
2017 67.33
2018 72.40
2019 77.03

Air Data10

Absolute Greenhouse Gas (GHG) Emissions11

thousand metric tons CO2e

685
1370
2055
2740
3425
2015
3425
2016
2969
2017
3191
2018
437
2019
516
Midstream services
Drilling / Completion / Production
Year Group Value - thousand metric tons CO2e
2015 Midstream services 1,962
Drilling / Completion / Production 1,463
Total 3,425
2016 Midstream services 1,826
Drilling / Completion / Production 1,143
Total 2,969
2017 Midstream services 1,858
Drilling / Completion / Production 1,333
Total 3,191
2018 Drilling / Completion / Production 437
Total 437
2019 Drilling / Completion / Production 516
Total 516

GHG Emissions Intensity12

kg CO2e/MMBTU gas produced

0.662
1.324
1.986
2.648
3.31
2015
1.14
2.62
2.68
2016
1.01
3.31
2.64
2017
0.93
3.17
2.31
2018
0.57
2019
0.52
Production only
Midstream only
Overall
Year Group Value - kg CO2e/MMBTU gas produced
2015 Production only 1.14
Midstream only 2.62
Overall 2.68
2016 Production only 1.01
Midstream only 3.31
Overall 2.64
2017 Production only 0.93
Midstream only 3.17
Overall 2.31
2018 Production only 0.57
2019 Production only 0.52

Methane Leak/Loss Rate13

% (SWN production operations only)

0.0384
0.0768
0.1152
0.1536
0.192
2014
0.176%
2015
0.192%
2016
0.175%
2017
0.171%
2018
0.056%
2019
0.055%
Year Value - % (SWN production operations only)
2014 0.176%
2015 0.192%
2016 0.175%
2017 0.171%
2018 0.056%
2019 0.055%

Total Methane Emitted14

gigagrams (SWN production operations only)

9.68
19
29
39
48.40
2015
45.10
2016
35.10
2017
48.40
2018
7.1
2019
8.94
Year Value - gigagrams (SWN production operations only)
2015 45.10
2016 35.10
2017 48.40
2018 7.1
2019 8.94
  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. The 2014 data include water used at the assets we purchased in Pennsylvania and West Virginia in late 2014 for the short period at the end of the year when we owned them. The 2015 data includes those assets as well as additional Pennsylvania and West Virginia assets we purchased in early 2015. 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 via 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 greater water source granularity is available. “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 produced water, encountered water during drilling, and rainwater naturally captured in facility containments. Reuse water can include volumes generated during drilling that have been treated off-site and returned for additional use. Also includes recycled flowback and produced water that is supplied to other operators for their downhole hydraulic fracturing operations and recycled flowback and produced water from other operators that was used by SWN in hydraulic fracturing operations.
  5. This volume includes SWN’s reuse of SWN produced water, reuse of produced water from other operators reuse of SWN produced water by other operators.
  6. The percentage in 2019 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 2019.
  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. 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 2015, 2016 and 2017 we have also included GHG emissions for our Sandwash (Colorado) operations (which are not subject to the GHGMRR) based on Subpart W emissions factors. In accordance with EPA greenhouse gas reporting requirements, assets that were divested in 2018 are not reported.
  11. Midstream assets are not included for the data in year 2018 and 2019 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.