OMB Control No. 2060-0328 Expires 07/31/2011



# Natural Gas STAR

International

Annual Report

2010 Company Information

Company Name:

Contact:

Title:

Address:

City, State/Province:

Country:

Telephone:

Fax:

E-mail:

This report contains emissions reductions data for [ please specify country and business unit(s)] *:

Period of time covered by report:

From: __________ To: __________



## International Annual Report Summary

Please provide information on the technologies and practices your company implemented and submit a report page for only

those activities.

This package includes the following:

 Five Annual Reporting forms (please make additional copies, if necessary)

 Additional Program Accomplishments form

 Appendices including proposed methane emission s reduction technologies and conversion factors

Signature: Date:

* Please submit a separate annual reporting form for each country for which you are reporting emissions reductions

.

In addition to reporting methane emissions reductions, you are welcome to include other information about your company’s participation in Natural Gas STAR International in the “Additi onal Program Accomplishments” section of this form. Natural Gas STAR International will use any information entered in this section to recognize the efforts and accomplishments of outstanding partners.

EPA Form No. 5900-107

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011



## Methane Emission Reduction Technologies & Practices

Current Year Activities

A. Facility/location identifier information:

B. Activity description: Please prov ide a separate reporting form fo r each technology or practice implemented. If reporting a DI&M activity, please use a separate page for each location/facility surveyed.

Please specify the technology or practice that was implemented (choose from the list in the A ppendix or describe your own): Please describe how your company implemented this activity (including location or facility where implemented):

C. Industry Sector (please indicate in which industry sector you implemented this activity):

Production (from underground to wellhead)

Gathering and Processing (from gather ing lines and processing plant to the point gas transfers to transmission pipelines) Transmission (transmission lines: from the point gas transfers to a transmission pipeline to the point gas transfers to city gate stations, including compressor stations along the transmission line(s))

Distribution (gate stations to customer connections)

D. Level of Implementation (check one) : E. Are emissions reductions a one-year reduction or a multiyear reduction? One-year Multi-year

If Multi-year: Partner will report this activity once and let EPA automatically calculate future emission reductions based on

sunset date duration*.

Partner will report this activity annually up to allowed sunset

date. Number of units installed:

Frequency of practice: units

times/year

F. Methane emissions reduction: Mcf * Because the implementation of some technologies reduces emissions for multiple years, Natural Gas STAR allows certain activities to count towards a company’s emission reductions beyond the initial year of implementation. Natural Gas STAR designates the maximum length of time that these reductions may accrue as “sunset dates.” Appendix A lists these sunset dates. Companies can report the corresponding methane emission reductions each year up to the allowable sunset date. Or, companies may wish to report reductions only once for the implementation year, and have EPA automatically apply the sunset date and count those emissions for the allowable number of years. Please identify the basis for the emissi ons reduction estimate. If needed, attach calculations separately.

Actual field measurement

Calculation using manufactu rer specifications/other source

Other (Please specify) G. Cost summary: Estimated cost of implementing this activity ( including equipment and labor ): U.S. $

H. Total value of gas saved or other economic benefits (please describe): U.S. $

Total value of gas saved (in U.S. Dollars) = Methane emissions reduction (in Mcf) x Gas value (in U.S. $/Mcf) I. To what extent do you expect to implement this activity next year?

Additional Comments:



### Previous Years' Activities

Use the table below to report any past implementation of th is technology or practice, but not previously reported to Natural Gas STAR

International.

Yea r Frequency of Activity or # of

Installations Total Cost of Activity (incl. equipment and labor) (U.S. $) Estimated Reductions (Mcf/yr) V alue of

Gas Saved

(U.S. $)

Comments/Additional Benefits : Please describe any additional economic, operational, environmental, or safety benefits achieved by implementing this technology or practice. Use the back of the page for additional space if needed.

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011



## Methane Emission Reduction Technologies & Practices

Current Year Activities

A. Facility/location identifier information:

B. Activity description: Please prov ide a separate reporting form fo r each technology or practice implemented. If reporting a DI&M activity, please use a separate page for each location/facility surveyed.

Please specify the technology or practice that was implemented (choose from the list in the A ppendix or describe your own): Please describe how your company implemented this activity (including location or facility where implemented):

C. Industry Sector (please indicate in which industry sector you implemented this activity):

Production (from underground to wellhead)

Gathering and Processing (from gather ing lines and processing plant to the point gas transfers to transmission pipelines) Transmission (transmission lines: from the point gas transfers to a transmission pipeline to the point gas transfers to city gate stations, including compressor stations along the transmission line(s))

Distribution (gate stations to customer connections)

D. Level of Implementation (check one) : E. Are emissions reductions a one-year reduction or a multiyear reduction? One-year Multi-year

If Multi-year: Partner will report this activity once and let EPA automatically calculate future emission reductions based on

sunset date duration*.

Partner will report this activity annually up to allowed sunset

date. Number of units installed:

Frequency of practice: units

times/year

F. Methane emissions reduction: Mcf * Because the implementation of some technologies reduces emissions for multiple years, Natural Gas STAR allows certain activities to count towards a company’s emission reductions beyond the initial year of implementation. Natural Gas STAR designates the maximum length of time that these reductions may accrue as “sunset dates.” Appendix A lists these sunset dates. Companies can report the corresponding methane emission reductions each year up to the allowable sunset date. Or, companies may wish to report reductions only once for the implementation year, and have EPA automatically apply the sunset date and count those emissions for the allowable number of years. Please identify the basis for the emissi ons reduction estimate. If needed, attach calculations separately.

Actual field measurement

Calculation using manufactu rer specifications/other source

Other (Please specify) G. Cost summary: Estimated cost of implementing this activity ( including equipment and labor ): U.S. $

H. Total value of gas saved or other economic benefits (please describe): U.S. $

Total value of gas saved (in U.S. Dollars) = Methane emissions reduction (in Mcf) x Gas value (in U.S. $/Mcf) I. To what extent do you expect to implement this activity next year?

Additional Comments:



### Previous Years' Activities

Use the table below to report any past implementation of th is technology or practice, but not previously reported to Natural Gas STAR

International.

Yea r Frequency of Activity or # of

Installations Total Cost of Activity (incl. equipment and labor) (U.S. $) Estimated Reductions (Mcf/yr) V alue of

Gas Saved

(U.S. $)

Comments/Additional Benefits : Please describe any additional economic, operational, environmental, or safety benefits achieved by implementing this technology or practice. Use the back of the page for additional space if needed.

## Natural Gas STAR International Annual Report

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## Methane Emission Reduction Technologies & Practices

Current Year Activities

A. Facility/location identifier information:

B. Activity description: Please prov ide a separate reporting form fo r each technology or practice implemented. If reporting a DI&M activity, please use a separate page for each location/facility surveyed.

Please specify the technology or practice that was implemented (choose from the list in the A ppendix or describe your own): Please describe how your company implemented this activity (including location or facility where implemented):

C. Industry Sector (please indicate in which industry sector you implemented this activity):

Production (from underground to wellhead)

Gathering and Processing (from gather ing lines and processing plant to the point gas transfers to transmission pipelines) Transmission (transmission lines: fr om the point gas transfers to a transmission pipeline to the point gas transfers to city gate stations, including compressor stations along the transmission line(s))

Distribution (gate stations to customer connections)

D. Level of Implementation (check one) : E. Are emissions reductions a one-year reduction or a multiyear reduction? One-year Multi-year

If Multi-year: Partner will report this activity once and let EPA automatically calculate future emission reductions based on

sunset date duration*.

Partner will report this activity annually up to allowed sunset

date. Number of units installed:

Frequency of practice: units

times/year

F. Methane emissions reduction: Mcf * Because the implementation of some technologies reduces emissions for multiple years, Natural Gas STAR allows certain activities to count towards a company’s emission reductions beyond the initial year of implementation. Natural Gas STAR designates the maximum length of time that these reductions may accrue as “sunset dates.” Appendix A lists these sunset dates. Companies can report the corresponding methane emission reductions each year up to the allowable sunset date. Or, companies may wish to report reductions only once for the implementation year, and have EPA automatically apply the sunset date and count those emissions for the allowable number of years. Please identify the basis for the emissi ons reduction estimate. If needed, attach calculations separately.

Actual field measurement

Calculation using manufactu rer specifications/other source

Other (Please specify) G. Cost summary: Estimated cost of implementing this activity ( including equipment and labor ): U.S. $

H. Total value of gas saved or other economic benefits (please describe): U.S. $

Total value of gas saved (in U.S. Dollars) = Methane emissions reduction (in Mcf) x Gas value (in U.S. $/Mcf) I. To what extent do you expect to implement this activity next year?

Additional Comments:



### Previous Years' Activities

Use the table below to report any past implementation of th is technology or practice, but not previously reported to Natural Gas STAR

International.

Yea r Frequency of Activity or # of

Installations Total Cost of Activity (incl. equipment and labor) (U.S. $) Estimated Reductions (Mcf/yr) V alue of

Gas Saved

(U.S. $)

Comments/Additional Benefits : Please describe any additional economic, operational, environmental, or safety benefits achieved by implementing this technology or practice. Use the back of the page for additional space if needed.

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011



## Methane Emission Reduction Technologies & Practices

Current Year Activities

A. Facility/location identifier information:

B. Activity description: Please prov ide a separate reporting form fo r each technology or practice implemented. If reporting a DI&M activity, please use a separate page for each location/facility surveyed.

Please specify the technology or practice that was implemented (choose from the list in the A ppendix or describe your own): Please describe how your company implemented this activity (including location or facility where implemented):

C. Industry Sector (please indicate in which industry sector you implemented this activity):

Production (from underground to wellhead)

Gathering and Processing (from gather ing lines and processing plant to the point gas transfers to transmission pipelines) Transmission (transmission lines: from the point gas transfers to a transmission pipeline to the point gas transfers to city gate stations, including compressor stations along the transmission line(s))

Distribution (gate stations to customer connections)

D. Level of Implementation (check one) : E. Are emissions reductions a one-year reduction or a multiyear reduction? One-year Multi-year

If Multi-year: Partner will report this activity once and let EPA automatically calculate future emission reductions based on

sunset date duration*.

Partner will report this activity annually up to allowed sunset

date. Number of units installed:

Frequency of practice: units

times/year

F. Methane emissions reduction: Mcf *Because the implementation of some technologies reduces emissions for multiple years, Natural Gas STAR allows certain activities to count towards a company’s emission reductions beyond the initial year of implementation. Natural Gas STAR designates the maximum length of time that these reductions may accrue as “sunset dates.” Appendix A lists these sunset dates. Companies can report the corresponding methane emission reductions each year up to the allowable sunset date. Or, companies may wish to report reductions only once for the implementation year, and have EPA automatically apply the sunset date and count those emissions for the allowable number of years. Please identify the basis for the emissi ons reduction estimate. If needed, attach calculations separately.

Actual field measurement

Calculation using manufactu rer specifications/other source

Other (Please specify) G. Cost summary: Estimated cost of implementing this activity ( including equipment and labor ): U.S. $

H. Total value of gas saved or other economic benefits (please describe): U.S. $

Total value of gas saved (in U.S. Dollars) = Methane emissions reduction (in Mcf) x Gas value (in U.S. $/Mcf) I. To what extent do you expect to implement this activity next year?

Additional Comments:



### Previous Years' Activities

Use the table below to report any past implementation of th is technology or practice, but not previously reported to Natural Gas STAR

International.

Yea r Frequency of Activity or # of

Installations Total Cost of Activity (incl. equipment and labor) (U.S. $) Estimated Reductions (Mcf/yr) V alue of

Gas Saved

(U.S. $)

Comments/Additional Benefits : Please describe any additional economic, operational, environmental, or safety benefits achieved by implementing this technology or practice. Use the back of the page for additional space if needed.

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011



## Methane Emission Reduction Technologies & Practices

Current Year Activities

A. Facility/location identifier information:

B. Activity description: Please prov ide a separate reporting form fo r each technology or practice implemented. If reporting a DI&M activity, please use a separate page for each location/facility surveyed.

Please specify the technology or practice that was implemented (choose from the list in the A ppendix or describe your own): Please describe how your company implemented this activity (including location or facility where implemented):

C. Industry Sector (please indicate in which industry sector you implemented this activity):

Production (from underground to wellhead)

Gathering and Processing (from gather ing lines and processing plant to the point gas transfers to transmission pipelines) Transmission (transmission lines: from the point gas transfers to a transmission pipeline to the point gas transfers to city gate stations, including compressor stations along the transmission line(s))

Distribution (gate stations to customer connections)

D. Level of Implementation (check one) : E. Are emissions reductions a one-year reduction or a multiyear reduction? One-year Multi-year

If Multi-year: Partner will report this activity once and let EPA automatically calculate future emission reductions based on

sunset date duration*.

Partner will report this activity annually up to allowed sunset

date. Number of units installed:

Frequency of practice: units

times/year

F. Methane emissions reduction: Mcf * Because the implementation of some technologies reduces emissions for multiple years, Natural Gas STAR allows certain activities to count towards a company’s emission reductions beyond the initial year of implementation. Natural Gas STAR designates the maximum length of time that these reductions may accrue as “sunset dates.” Appendix A lists these sunset dates. Companies can report the corresponding methane emission reductions each year up to the allowable sunset date. Or, companies may wish to report reductions only once for the implementation year, and have EPA automatically apply the sunset date and count those emissions for the allowable number of years. Please identify the basis for the emissi ons reduction estimate. If needed, attach calculations separately.

Actual field measurement

Calculation using manufactu rer specifications/other source

Other (Please specify) G. Cost summary: Estimated cost of implementing this activity ( including equipment and labor ): U.S. $

H. Total value of gas saved or other economic benefits (please describe): U.S. $

Total value of gas saved (in U.S. Dollars) = Methane emissions reduction (in Mcf) x Gas value (in U.S. $/Mcf) I. To what extent do you expect to implement this activity next year?

Additional Comments:



### Previous Years' Activities

Use the table below to report any past implementation of th is technology or practice, but not previously reported to Natural Gas STAR

International.

Yea r Frequency of Activity or # of

Installations Total Cost of Activity (incl. equipment and labor) (U.S. $) Estimated Reductions (Mcf/yr) V alue of

Gas Saved

(U.S. $)

Comments/Additional Benefits : Please describe any additional economic, operational, environmental, or safety benefits achieved by implementing this technology or practice. Use the back of the page for additional space if needed.

## Natural Gas STAR International Annual Report

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## Additional Program Accomplishments

The Natural Gas STAR International Program will use any information entered here to recognize the efforts and achievements of outstanding partners.

Please include any additional information you would like to share about your company’s participation in Natural Gas STAR International. Examples may include:

 Activities to strengthen your program (e.g., training/e ducation, innovative technologies or activities, pilot projects, employee incentive programs).

 Efforts to communicate your participation and success es (e.g., internal newsletters, press releases, company website).

 Participation in Natural Gas STAR International program activities (e.g., contributions to case studies, presentation at workshops).

Additional Accomplishments: (Please use the back of the page for additional space if needed.)

## Natural Gas STAR International Annual Report

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### Appendix A-1



## Methane Emission Reduction Technologies & Practices—

Production Sector

The list below describes a variety of methane emission reduction technologies that Natural Gas STAR partners in the production sector have implemented and reported to Natural Gas STAR. You may us e this list as a guide when completing your annual report. Sunset dates (i.e., the length of time a technology or practice can continue to accrue emission reductions after implemented) are one year in duration unless otherwise noted in parentheses. An asterisk (*) indicates that a technical document related to the technology or practice is available online at epa.gov/gasstar/tools/recommended.html.

Compressors/Engines



###  Automate compressor syst ems operation to reduce venting*



###  Catalytic converter installation (10 years)



###  Convert engine starting to nitrogen and/or CO 2 rich gas (10 years)*



###  Convert to low pressure compre ssor starters (10 years)



###  Eliminate unnecessary equipment and/or systems*



###  Increase compression capacity to reduce venting/flaring



###  Install automated air/fuel ratio control systems (10 years)*



###  Install electric comp ressors (10 years)*



###  Install electric motors (10 years)



###  Install electric starters (10 years)*



###  Install lean burn compressor (10 years)



###  Lower compressor purge pressure for shutdown*



###  Perform gas recovery usin g slipstream (10 years)



###  Redesign blowdown/alter ESD practices*



###  Reduce emissions when taking compressors offline*



###  Replace compressor rod packing systems*



###  Replace gas starters with air (10 years)*



###  Replace ignition/reduce false starts*



###  Turbine fuel use optimization

Dehydrators



###  Install condensers on glyco l dehydrators (10 years)



###  Install/convert gas-driven c hemical pumps to electric, mechanical, or solar pumps (10 years)*



###  Install desiccant dehydrator (10 years)*



###  Install flash tank separators on glycol dehydrators (10 years)*



###  Reduce glycol circulation rates in dehydrators*



###  Reroute dehy./tank vents to flare or station suction (10 years)*



###  Reroute glycol skimmer gas*



###  Shutdown glycol dehydrator stripping gas in winter



###  Use rich glycol in glycol pumps

Directed Inspection and Maintenance



###  DI&M at compressor stations* 

###  DI&M: leak detection using IR camera/optical imaging



###  DI&M: leak detection using lower emission threshold



###  DI&M: survey and repair leaks

Pipelines



###  Inject blowdown gas into low pr essure system*



###  Pipeline replacement and repair



###  Use fixed/portable comp ressors for pipeline pumpdown*



###  Use hot taps for in-service pipeline connections*

Pneumatics/Controls



###  Capture/use gas released from gas-operated pneumatic pumps



###  Convert gas-driven chemical pumps to instrument air (10 years)*



###  Convert gas pneumatic controls to instrument air (10 years)*



###  Convert pneumatic devices to mechanical/electronic (10 years)*



###  Identify and replace high-bleed pneumatic devices (7 years)*



###  Install/convert gas powered separators to solar powered separators (10 years)



###  Install controllers on gas-assisted methanol pump (10 years)



###  Install no bleed controllers (10 years)



###  Install non-venting dump controllers (10 years)



###  Reduce gas pressure on pneumatic devices



###  Reduce venting from unlit pilot: install electronic safety devices (10 years)*



###  Replace bi-directional orifice meter with ultrasonic

meters*



###  Replace chemical pumps with electronic flow controllers (10 years)



###  Use add-on controls to reduce emissions from pneumatics (10 years)

Tanks



###  Change out vent pallet (10 years)



###  Consolidate crude oil production and water storage tanks (10 years)*



###  Convert water tank blanket from natural gas to CO 2 (10 years)*

## Natural Gas STAR International Annual Report

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Tanks



###  Install evactors (10 years)



###  Install flash gas compressors (10 years)



###  Install hydrocarbon liqui d stabilizer (10 years)



###  Install pressurized storage of condensate (10 years)*



###  Install vapor recovery uni ts (VRUs) (10 years)*



###  Install vapor recovery units on pipeline liquid/condensate tanks (10 years)*



###  Recycle line recover gas during condensate loading*



###  Reduce excess blanket gas blow-by to the atmosphere



###  Replace leaking abovegr ound tanks (10 years)



###  Route gas to compressor suction/blowcase vessel (10 years)



###  Use protective tank coat ings to reduce leaks (10 years)

Valves



###  Heat tracing to prevent co ntrol valves from freezing

open



###  Install plugs on valves and open ended lines (10 years)



###  Reduce venting from unlit pilot: install BASO valves (10 years)*



###  Test and repair pressure safety valves*

Wells



###  Artificial lift: gas lift (10 years)



###  Artificial lift: install plunger lifts (10 years)*



###  Artificial lift: install pumpjacks or rod pumps on gas wells (10 years)*



###  Artificial lift: install smart lift automated systems on gas wells (10 years)*



###  Artificial lift: install veloci ty tubing strings (10 years)*



###  Artificial lift: pressure swabbing



###  Artificial lift: use capilla ry strings (10 years)



###  Artificial lift: use compression (10 years)



###  Artificial lift: use pumping unit (10 years)



###  Artificial lift: use to reduce blowdown in gas wells (10 years)*



###  Install automated shut-in cycle units to reduce well venting (10 years) 

###  Install flash tank separator on water gathering system (10 years)



###  Install pumps for separators (10 years)



###  Install snubbing unit at wellhead



###  Install soap launcher/soap unit (10 years)



###  Lower heater-treater temperature*



###  Optimize gas well unloading times*



###  Perform reduced emissions completions*



###  Route casinghead gas to VRU or compressor (10 years)*



###  Use foaming agents to reduce blowdown frequency*

Other



###  Capture and use waste heat to reduce gas usage

and emissions



###  Convert natural gas fired generator to solar power (10 years)



###  Flare reduction program



###  Improve system design/operation



###  Install flares (10 years)*



###  Install pilotless burner controls (10 years)



###  Install purge reducer on flare (10 years)



###  Optimize nitrogen rejection unit to reduce methane in

N 2 reject stream*



###  Recover gas from separators



###  Re-inject gas for enhanced oil recovery



###  Re-inject gas into crude



###  Replace aged heaters with new efficient gas fired heaters (10 years) 

## Methane Emission Reduction Technologies & Practices—

Production Sector

## Natural Gas STAR International Annual Report

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### Appendix A-2



## Methane Emission Reduction Technologies & Practices— Gathering and Processing Sector

The list below describes a variety of methane emission reduction technologies that Natural Gas STAR partners in the gathering a nd processing sector have implemented and reported to Natural Gas STAR. You may use this list as a guide when completing your annual report. Sunset dates (i.e., the length of time a technology or practice can continue to accrue emission reductions after implemented) are one year in durati on unless otherwise noted in parentheses. An asterisk (*) indicates that a technical document related to the technology or practice is available online at epa.gov/gasstar/tools/recommended.html.

Compressors/Engines



###  Convert engine starting to nitrogen and/or CO 2 rich gas (10 years)*



###  Eliminate unnecessary equipment and/or systems*



###  Install automated air/fuel ratio control systems (10 years)*



###  Install electric comp ressors (10 years)*



###  Install electric starters (10 years)*



###  Redesign blowdown/alter ESD practices*



###  Reduce emissions when taking compressors offline*



###  Replace compressor rod packing systems*



###  Replace gas starters with air (10 years)*

Dehydrators



###  Install condensers on glyco l dehydrators (10 years)



###  Install/convert gas-driven c hemical pumps to electric, mechanical, or solar pumps (10 years)*



###  Install flash tank separators on glycol dehydrators (10 years)*



###  Reduce glycol circulation rates in dehydrators*



###  Reroute dehy./tank vents to flare or station suction (10 years)*



###  Replace glycol dehydration units with methanol injection (10 years)*



###  Reroute glycol skimmer gas*

Directed Inspection and Maintenance



###  DI&M at compressor stations*



###  DI&M at gas plants and booster stations*



###  DI&M: aerial leak detection using laser and/or infrared technology



###  DI&M: inspect/repair compressor station blowdown

valves*



###  DI&M: leak detection using IR camera/optical imaging



###  DI&M: leak detection using ultrasound*



###  Improve measurement systems to track gas loss

Pipelines



###  Pipeline replacement and repair



###  Recover gas from pipeline pigging operations*



###  Revise pigging schedule to reduce methane

emissions



###  Use composite wrap repair*



###  Use inert gases and pigs to perform pipeline purges* 

###  Use fixed/portable comp ressors for pipeline pumpdown*



###  Use hot taps for in-service pipeline connections*



###  Use of improved protective coating at pipeline canal crossings (10 years)*

Pneumatics/Controls



###  Capture and use waste heat to reduce gas usage

and emissions



###  Convert gas pneumatic controls to instrument air systems (10 years)*



###  Install back-up power at booster sites to prevent venting (10 years)



###  Install no bleed controllers (10 years)



###  Use add-on controls to reduce emissions from pneumatics (10 years)

Tanks



###  Direct liquids at compressor suction to pipeline (10 years)



###  Install hydrocarbon liqui d stabilizer (10 years)



###  Install pressurized storage of condensate (10 years)*



###  Install vapor recovery uni ts (VRUs) (10 years)*



###  Install VRUs on pipeline liquid/condensate tanks (10 years)*



###  Reduce excess blanket gas blow-by to the atmosphere



###  Reduce vapors vented out of drip tanks



###  Route inlet flash vapors to station suction (10 years)

Valves



###  Convert gas operated valves to hydraulic operation (10 years)



###  Heat tracing to prevent co ntrol valves from freezing

open



###  Rupture pin shutoff device to reduce venting (10 years)



###  Test and repair pressure safety valves*



###  Test gate station pressure relief valves with nitrogen*

Other



###  Convert natural gas fired generator to solar power (10 years)



###  Install flares (10 years)*



###  Optimize nitrogen rejection unit to reduce methane in

N 2 reject stream*



###  Process/re-route acid gas to reduce venting

## Natural Gas STAR International Annual Report

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### Appendix A-3



## Methane Emission Reduction Technologies & Practices—

Transmission Sector

The list below describes a variety of methane emission reduction technologies that Natural Gas STAR partners in the transmission sector have implemented and reported to Natural Gas STAR. You may use this list as a guide when completing your annual report. Sunset dates (i.e., the length of time a technology or practice can continue to accrue emission reductions after implemented) are one year in durat ion unless otherwise noted in parentheses. An asterisk (*) indicates that a technical document related to the technology or practice is available online at epa.gov/gasstar/tools/recommended.html.

Compressors/Engines



###  Automate compressor syst ems operation to reduce venting*



###  Eliminate unnecessary equipment and/or systems*



###  Install automated air/fuel ratio control systems (10 years)*



###  Install electric comp ressors (10 years)*



###  Install electric motors (10 years)



###  Install electric starters (10 years)*



###  Install lean burn compressor (10 years)



###  Lower compressor purge pressure for shutdown*



###  Redesign blowdown/alter ESD practices*



###  Reduce emissions when taking compressors offline*



###  Reduce frequency of engine starts with gas*



###  Replace compressor cylinder unloaders*



###  Replace compressor rod packing systems*



###  Replace gas starters with air (10 years)*



###  Replace ignition/reduce false starts*



###  Replace wet compressor seals with dry seals (10 years)*



###  Use of turbines at compressor stations (20 years)

Dehydrators



###  Install condensers on glyco l dehydrators (10 years)



###  Install flash tank separators/controls on Tran. sector glycol dehydrators (10 years)*



###  Install/convert gas-driven c hemical pumps to electric, mechanical, or solar pumps (10 years)*



###  Replace glycol dehydrator with separator & in-line heaters (10 years)*



###  Reroute dehy./tank vents to flare or station suction (10 years)*



###  Reroute glycol skimmer gas*

Directed Inspection and Maintenance



###  DI&M at compressor stations*



###  DI&M at remote sites*



###  DI&M: aerial leak detection using laser and/or infrared technology 

###  DI&M: inspect/repair compressor station blowdown

valves*



###  DI&M: leak detection using IR camera/optical imaging



###  DI&M: leak detection using ultrasound*



###  DI&M: survey and repair leaks

Pipelines



###  Inspect/repair valves during pipeline replacement*



###  Pipeline replacement and repair



###  Recover gas from pipeline pigging operations*



###  Reduce/downgrade system pressure



###  Reduced emissions through third-party damage prevention



###  Use composite wrap repair*



###  Use fixed/portable comp ressors for pipeline pumpdown*



###  Use hot taps for in-service pipeline connections*



###  Use inert gas/pigs for pipeline purges*

Pneumatics/Controls



###  Convert gas-driven chemical pumps to instrument air (10 years)*



###  Convert gas pneumatic controls to instrument air (10 years)*



###  Identify and replace high-bleed pneumatic devices (7 years)*



###  Install no bleed controllers (10 years)



###  Reduce meter run blowdowns



###  Replace bi-directional orifice meter with ultrasonic

meters*



###  Use add-on controls to reduce emissions from pneumatics (10 years)

Tanks



###  Install flash gas compressors (10 years)



###  Install vapor recovery units on pipeline liquid/ condensate tanks (10 years)*

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011

Valves



###  Close valves during repair to minimize blowdown*



###  Design isolation valves to minimize gas blowdown volumes (10 years)*



###  Move in fire gates at compressors (10 years)*



###  Test and repair pressure safety valves*



###  Use of YALE closures for ESD testing*

Wells



###  Switch from underbalanced to overbalanced drilling in gas storage field

Other



###  Convert natural gas fired generator to solar power (10 years)



###  Improve system design/operation



###  Inject blowdown gas into low pres sure system*



###  Install flares (10 years)*



###  Replace aged heaters with new efficient gas fired heaters (10 years)



###  Require improvements in quality of gas received* 

## Methane Emission Reduction Technologies & Practices—

Transmission Sector

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011



### Appendix A-4



## Methane Emission Reduction Technologies & Practices—

Distribution Sector

The list below describes a variety of methane emission reduction technologies that Natural Gas STAR partners in the distributio n sector have implemented and reported to Natural Gas STAR. You may use this list as a guide when completing your annual report. Sunset dates (i.e., the length of time a technology or practice can continue to accrue emission reductions after implemented) are one year in durati on unless otherwise noted in parentheses. An asterisk (*) indicates that a technical document related to the technology or practice is available online at epa.gov/gasstar/tools/recommended.html.

Compressors/Engines



###  Eliminate unnecessary equipment and/or systems*



###  Install electric starters (10 years)*



###  Redesign blowdown/alter ESD practices*



###  Reduce frequency of engine starts with gas*



###  Replace compressor rod packing systems*



###  Replace ignition/reduce false starts*

Dehydrators



###  Reroute dehy./tank vents to flare or station suction (10 years)*

Directed Inspection and Maintenance



###  DI&M at compressor stations (non-mainline transmission)*



###  DI&M at gate stations and surface facilities*



###  DI&M: survey and repair leaks



###  DI&M: increase frequency of leak surveys*



###  Improve measurement systems to track gas loss

Pipelines



###  Identify and rehabilitate leaky distribution pipes



###  Insert gas main flexible liners (10 years)*



###  Reduce/downgrade system pressure



###  Reduced emissions through third-party damage prevention



###  Use fixed/portable comp ressors for pipeline pumpdown*



###  Use hot taps for in-service pipeline connections*



###  Use no-blow insertion fittings Pneumatics/Controls



###  Convert gas-driven chemical pumps to instrument air (10 years)*



###  Convert gas pneumatic controls to instrument air (10 years)*



###  Convert pneumatic devices to mechanical/electronic (10 years)*



###  Use add-on controls to reduce emissions from pneumatics (10 years)

Valves



###  Install excess flow valves (10 years)*



###  Install overpressure prot ection system (10 years)



###  Test and repair pressure safety valves*



###  Test gate station pressure relief valves with nitrogen*

Other



###  Convert natural gas fired generator to solar power (10 years)



###  Improve system design/operation



###  Inject blowdown gas into low pressure system*



###  Install flares (10 years)*



###  Re-inject CNG cylinder test gas



###  Retighten LNG pump seals



###  Use automated systems to reduce pressure

## Natural Gas STAR International Annual Report

OMB Control No. 2060-0328 Expires 07/31/2011 

### Appendix B



## Conversion Factors

Please see below for a variety of conversion factors that might be useful when completing your annual report. Please contact Natural Gas STAR if you ha ve questions about this information.

Gas Conversions Please report methane emissions reductions to Natural Gas STAR International in thousand cubic feet (Mcf).

1 Cubic foot of methane = 1,014.6 Btu

1 Btu = 0.000986 Cubic feet of methane

1 Cubic foot = 0.02832 Cubic meter

1 Cubic meter = 35.312 Cubic feet

1 Mile = 1.609 Kilometer

1 Kilometer = 0.6214 Mile

1 Btu = 251.996 Calories

1 Calorie = 0.00397 Btu

1 Btu = 1055.056 Joules

1 Joule = 0.00095 Btu



### Natural Gas STAR Program Managers:

Scott Bartos Phone: +1 (202) 343-9167 Fax: +1 (202) 343-2202

E-mail: bartos.scott@epa.gov

Jerome Blackman Phone: +1 (202) 343-9630 Fax: +1 (202) 343-2342

E-mail: blackman.jerome@epa.gov

Carey Bylin Phone: +1 (202) 343-9669 Fax: +1 (202) 343-2202

E-mail: bylin.carey@epa.gov

Roger Fernandez Phone: +1 (202) 343-9386 Fax: +1 (202) 343-2202

E-mail: fernandez.roger@epa.gov

Suzie Waltzer Phone: +1 (202) 343-9544 Fax: +1 (202) 343-2202

E-mail: waltzer.suzanne@epa.gov Mailing Information:

Standard Mail: The Natural Gas STAR Program U.S. EPA (6207J) 1200 Pennsylvania Ave, NW Washington, DC 20460

U.S.A.

Express/Overnight Mail: The Natural Gas STAR Program U.S. EPA (6207J) 1310 L Street, NW Washington, DC 20005

U.S.A.

The public reporting and recordkeeping burd en for this collection of information is estimated to average 60 hours for each ne w response and 27 hours for subsequent responses. Send comments on the Agency's need for this information, the accuracy of the provided burden estimates, and any suggested methods for minimizing respondent burden, including through the us e of automated collection techniques to the Director, Collection Strategies Division, U.S. Environmental Protection Agency (2822T), 1200 Pennsylvania Ave., NW, Wash ington, D.C. 20460. Include the OMB control number in any correspondence. Do not send the completed form to this

address.