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Seneca Resources Corporation
Joined Natural Gas STAR in 2015
2018 Natural Gas STAR Summary Report
Segment: Production
Since the inception of the program in 1993, domestic
Natural Gas STAR partners have eliminated more
than 1,634,488,310 thousand cubic feet (Mcf) of
methane emissions.
1,185,262,833 Mcf of methane emissions have been
reduced in the Production Segment.
This report summarizes the voluntary methane
emissions reductions achieved by Seneca Resources
Corporation in the Production Segment under the
EPA Natural Gas STAR Program.
Reductions for Seneca Resources
Corporation
Seneca Resources Corporation
(Annual Reductions)
1.25
New*
Ongoing*
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Seneca Resources Corporation Methane Emission Reduction Technologies and Practices
201 8 Reductions in the Production Segment for Seneca Resources
Corporation: 1,014,607 Mcf
Convert natural gas-driven chemical
pumps: 0.2%
Install flash tank separators on
glycol dehydrators: 0.7%
Identify and replace high-bleed
pneumatic devices: 10.7%
Artificial lift: install plunger lifts:
88.4%
Cumulative Reductions in the Production Segment for Seneca Resources
Corporation: 1,895,075 Mcf
Other: 0.4%
Install flash tank separators on
glycol dehydrators: 1.3%
Eliminate unnecessary equipment
and/or systems: 6.4%
Improve system design/operation:
1 1.9%
Identify and replace high-bleed
pneumatic devices: 22.1%
Artificial lift: install plunger lifts:
5 7.9%
"Cumulative reductions" are all reductions achieved by Seneca Resources Corporation in the Production Segment
since joining the program.
Based on data available as of 1/9/2020
Page 2 of 4
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Summary of Technologies and Practices for the Production Segment

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Total Annual Reductions in 201 8 for the Production Segment
(1 16,391,845 Mcf)
6.9%
5.5%
5.6%
6.8%
75.3%
Use foaming agents to reduce blowdown frequency
(75.3%)
Artificial lift: install smart lift automated systems on
gas wells (6.8%)
Artificial lift: install plunger lifts (5.6%)
Install vapor recovery units on storage tanks (5.5%)
Other (6.9%)
* "New" reductions refer to reductions realized the first year an activity is implemented.
** "Ongoing" reductions come from activities that are eligible to accrue methane reductions after the first year the
activity is implemented. The length of time these activities can continue to accrue reductions or "sunset date" is
specified for each activity.
Based on data available as of 1/9/2020	Page 3 of 4
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Top Technologies and Practices for the Production Segment
Top 10 Technologies and Practices in the Production Segment
Reported by Partners in the Last 5 Years (2014 to 2018)
Rank
Technology/Practice
Reductions (Mcf)
1
Use foaming agents to reduce blowdown frequency
141,964,125
2
Artificial lift: install smart lift automated systems on gas wells
43,189,891
3
Artificial lift: install plunger lifts
39,650,061
4
Install vapor recovery units on storage tanks
29,143,137
5
Install/convert gas-driven pumps to electric, mechanical, or solar pumps
9,551,900
6
Install no bleed controllers
8,154,852
7
Artificial lift: gas lift
7,525,128
8
Optimize gas well unloading times
7,448,972
9
Install flares
6,011,354
10
Identify and replace high-bleed pneumatic devices
4,901,536
Notes:
"Top technologies" are those that led to the greatest cumulative, partner-reported, methane reductions over the
specified time period.
Visit the Natural Gas STAR'S Recommended Technologies for more information.
Based on data available as of 1/9/2020
Page 4 of 4
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