Processing

 174 Leaker Emission Factors - Reciprocating Compressor Components, Gas Service

81 Valve

69 Connector

12 Open-ended Line

1 Pressure Relief Valve

1 Meter

 30 Leaker Emission Factors - Centrifugal Compressor Components, Gas Service

18 Valve

11 Connector

1 Open-ended Line

Dry Seal

Leaker Emission Factors - Other Components, Gas Service

216 Valve

121 Connector

33 Open-ended Line

2 Pressure Relief Valve

2 Meter

AFTER

Processing

Leaker Emission Factors - Reciprocating Compressor Components, Gas Service

BD

CCV

Connector

CS

Meter

OEL

PRV

Valve

Leaker Emission Factors - Centrifugal Compressor Components, Gas Service

Connector

CS

OEL

Valve

Leaker Emission Factors - Other Components, Gas Service

BD

Connector

CS

Meter

OEL

PRV

Pump Seal

Valve

TABLE W-2 OF SUBPART W - DEFAULT METHANE EMISSION FACT
BEFORE

Processing

Leaker Emission Factors - Reciprocating Compressor Components, Gas Service

BD

CCV

Connector

CS

Meter

OEL

PRV

Valve

Leaker Emission Factors - Centrifugal Compressor Components, Gas Service

Connector

CS

OEL

Valve

Leaker Emission Factors - Other Components, Gas Service

BD

Connector

CS

Meter

OEL

PRV

Pump Seal

Valve

Transmission

Counts Leaker Emission Factors - All Components, Gas Service

Connector

245 Block Valve

40 Control Valve

75 Compressor Blowdown Valve

Pressure Relief Valve

21 Orifice Meter

7 Other Meter

21 Regulator

Open-ended Line

Underground Storage

TABLE W-3 OF SUBPART W - DEFAULT METHANE EMISSION FACTO

TABLE W-4 OF SUBPART W - DEFAULT METHANE EMISSION FACTORS FO
Leaker Emission Factors - Storage Station, Gas Service

Connector

Block Valve

Control Valve

Compressor Blowdown Valve

Pressure Relief Valve

Orifice Meter

Other Meter

Regulator

Open-ended Line

Distribution

Leaker Emission Factors - Above Grade M&R Stations Components, Gas Service

Connector

Block Valve

Control Valve

Pressure Relief Valve

Orifice Meter

Other Meter

Regulator

Open-ended Line

TABLE W-7 OF SUBPART W - DEFAULT METHANE EMISSION FACTO
Emission Factor (scf/hour/component)

13.47

8.48

16.57

28.45

33.88

1.90

2.36

8.86

4.52

4.26

22.81

12.90

2.25

Emission Factor (scf/hour/component)

1.220738

2.412833333

0.233553311

2.136078756

0.8130003

0.347061517

0.682754

0.359075412

0.06337029

2.072546

0.3389953

0.056866231

0.127054292

0.1618622

0.333080882

0.167246358

TORS FOR PROCESSING
Emission Factor (scf/hour/component)

3.751668

0.615785631

0.090572448

6.49456992

0.48965335

0.155282436

0.0439704

0.793016933

0.012612378

0.0017336

0.101462499

0.2920328

0.003651067

0.194765717

0.0422368

0.006698

0.115915523

Emission Factor (scf/hour/component)

 0.96

2.02

3.94

 66.15

19.80

 0.46

0.01

1.03

6.01

Emission Factor (scf/hour/component)

ORS FOR TRANSMISSION

OR UNDERGROUND STORAGE
 0.96

2.02

3.94

 66.15

19.80

 0.46

0.01

1.03

6.01

Emission Factor (scf/hour/component)

 0.67

1.49

3.94

5.24

0.46

0.01

2.14

6.01

ORS FOR DISTRIBUTION
Processing

Leaker Emission Factors - Compressor Components, Gas Service

Valve

Connector

Open-ended Line

Pressure Relief Valve

Meter

Dry Seal

Leaker Emission Factors - Other Components, Gas Service

Valve

Connector

Open-ended Line

Pressure Relief Valve

Meter

Processing

Leaker Emission Factors - Compressor Components, Gas Service

BD

CCV

Connector

CS

Meter

OEL

PRV

Valve
Processing

Leaker Emission Factors - Compressor Components, Gas Service

BD

CCV

Connector

CS

Meter

OEL

PRV

Valve

Transmission

Leaker Emission Factors - All Components, Gas Service

Valve

Connector

Open-ended Line

Pressure Relief Valve

Meter

Emission Factor (scf/hour/component)

11.77

7.58

15.44

28.45

33.88

4.52

4.26

22.81

12.90

2.25

Emission Factor (scf/hour/component)

1.220738

2.412833333

0.213652877

2.133809729

0.8130003

0.346139664

0.682754

0.30996642
Emission Factor (scf/hour/component)

3.751668

0.615785631

0.234910356

5.544311089

0.48965335

0.120578908

Emission Factor (scf/hour/component)

2.02

 0.96

6.01

 19.80

0.35
Hydrocarbon Emission Factors

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 2.1 0.7 2.5 2.5 

Connector 2.7 2.3 2.8 3.4 

Open-ended Line 15.1 - 15.1 17.6 

Pressure Relief Valve - - - - 

Meter - - - - 

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

 All 

Processing 

Valve 14.4 8.2 15.7 18.99 

Connector 9.2 4.8 10.4 7.92 

Open-ended Line 18.4 25.9 14.5 5.74 

Pressure Relief Valve 30.5 - 30.5 - 

Meter - 36.3 36.3 36.18 

All Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 16.5 8.9 18.3 17.9 

Connector 11.9 7.1 13.2 7.7 

Open-ended Line 33.5 25.9 29.6 6.6 

Pressure Relief Valve 30.5 - 30.5 - 

Meter - 36.3 36.3 36.2 

Non-Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 6.5 6.0 7.5 6.3 

Connector 5.4 5.3 5.7 5.9 

Condensed 

Categories

(scf/hr)

Clearstone I

Condensed 

Categories

(scf/hr)

Clearstone I

Condensed 

Categories

(scf/hr)

Clearstone I

Condensed 

Categories

(scf/hr)

Clearstone I
Open-ended Line 10.7 9.8 14.0 11.7 

Pressure Relief Valve 2.2 2.2 - 1.2 

Meter 0.2 3.7 7.2 2.5 
Before

De-Methanizer

After

De-Methanizer

 2.5 - 13.2 

 3.4 - 0.6 

 17.6 - - 

 - - - 

 - - - 

 Before

De-Methanizer 

 After

De-Methanizer 

 19.19 18.34 7.0 

 8.58 4.01 9.0 

 5.95 5.12 26.1 

 - - - 

 72.34 0.02 - 

Canada 1998

Before

De-Methanizer

After

De-Methanizer Transmission

 17.8 18.3 11.1 7.7 

 8.3 4.0 2.9 8.3 

 7.0 5.1 23.1 26.1 

 - - 39.8 - 

 72.3 0.02 14.1 - 

Canada 1998

Before

De-Methanizer

After

De-Methanizer Distribution

 6.9 6.1 0.7 1.3 

 4.4 6.4 2.3 0.4 

Clearstone II (2006) 

Gathering 

Compressor 

Stations

Clearstone II (2006) 

Gathering 

Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II

Clearstone II

Clearstone II

Clearstone II
 21.5 9.0 28.0 2.1 

 - 1.2 0.3 - 

 4.1 1.0 0.2 - 
All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 2.2 - 2.5 

Connector 3.0 - 3.1 

Open-ended Line 16.2 - 16.2 

Pressure Relief Valve - - -

Meter -- -

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve did not pass t-test 15.9 18.1 

Connector 8.3 4.3 9.1 

Open-ended Line 12.6 17.9 10.3 

Pressure Relief Valve - - -

Meter - 48.3 36.2 

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 17.4 15.5 17.9 

Connector 9.1 5.4 9.8 

Open-ended Line 21.2 17.9 18.6 

Pressure Relief Valve

Meter 36.2

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 6.4 6.1 7.2 

Connector 5.7 5.9 5.0 

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)
Open-ended Line 11.3 9.4 18.2 

Pressure Relief Valve 2.0 2.0 

Meter 0.7 2.9 5.1 
Clearstone II (March 2006) Last Updated 

Processing THC Emissions Average (scf/hr) Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 91.40636936 0 91.40636936

Connector 4.009609428 0 4.009609428

Meter 0.017655367 0 0.017655367

OEL 5.117177527 0 5.117177527

Other 0 0 0

PRV 0 0 0

Pump seal 0 0 0

Valve 18.33759508 0 18.33759508

Processing Component Counts Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 33 0 33

Connector 93 0 93

Meter 1 0 1

OEL 10 0 10

Other 0 0 0

PRV 0 0 0

Pump seal 0 0 0

Valve 175 0 175

Processing THC Emissions Average (scf/hr) After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 135.5768711 0 135.5768711

Connector 8.575439746 3.437296363 8.305011147

Meter 72.34155439 0 72.34155439

OEL 5.94696945 17.57569818 7.004126608

Other 0.017655367 0 0.017655367

PRV 0 0 0

Pump seal 0 0 0

Valve 19.18597388 2.49033234 17.77918691

Processing Component Counts After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 66 0 66

Connector 558 31 589

Meter 1 0 1

OEL 30 3 33

Other 2 0 2

PRV 0 0 0

Pump seal 0 0 0
Valve 576 53 629

Canadian Data (CEPEI Fugitive Emissions Data)

Distribution CH4 Emissions Average (scf/hr)

Leaker Factors for Gate Stations

THC Leaker

Component Leaker Count Factors (scf/hr)

BD 0 0

C 37 2.429674054

CONT 4 26.41461451

CSC 0 0

CSR 0 0

CV 17 10.00025415

OEL 5 27.9778267

OM 4 0.226729139

OTHER 0 0

PRV 6 0.254333847

REG 5 0.992096691

V 26 0.687145097

Leaker Factors for District Regulating Stations

THC Leaker

Component Leaker Count Factors (scf/hr)

BD 0 0

C 3 0.201863536

CONT 0 0

CSC 0 0

CSR 0 0

CV 0 0

OEL 0 0

OM 0 0

OTHER 0 0

PRV 2 0.520905595

REG 0 0

V 1 0.047713199

Clearstone I

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 198.38 - 198.38 
CCV 32.56 - 32.56 

Connector 4.79 2.33 7.11 

CS 343.41 41.93 385.34 

Meter - - - 

OEL 25.89 - 25.89 

PRV - - - 

Pump Seal - - - 

Valve 8.21 0.67 8.88 

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 54.46 - 54.46 

CCV 107.64 - 107.64 

Connector 10.42 2.83 13.25 

CS 95.29 92.46 187.75 

Meter 36.27 - 36.27 

OEL 14.48 15.12 29.61 

PRV 30.46 - 30.46 

Valve 15.72 2.54 18.26 

Processing CH4 Emissions Average (scf/hr) ALL

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 126.42 - 126.42 

CCV 46.64 - 46.64 

Connector 9.24 2.66 11.90 

CS 183.91 54.56 238.47 

Meter 36.27 - 36.27 

OEL 18.37 15.12 33.49 

PRV 30.46 - 30.46 

Pump Seal - - - 

Valve 14.42 2.06 16.48 

Clearstone I

Reciprocating Centrifugal ALL

Processing EFs Compressors Compressors Compressors

Valve 18.33759508 0 18.33759508

Connector 4.009609428 0 4.009609428

Open-ended Line 5.117177527 0 5.117177527
Pressure Relief Valve 0 0 0

Meter 0.017655367 0 0.017655367

Transmission EFs Clearstone II Canadian Data

Valve 7.690314223 11.13798666

Connector 8.315149956 2.865502443

Open-ended Line 26.06163388 23.06396484

Pressure Relief Valve 0 39.81932875

Meter 0 14.13086582
12/17/2009

r Gathering and Boosting THC Emissions Averag

Non- Grand Total Reciprocating

Compressor Component Compressors

0 91.40636936 Compressor seal 44.70341938

6.391683707 5.970518482 Connector 9.002470664

1.019795234 0.876632396 OEL 26.06163388

9.011510588 8.592765098 Other 1659.557503

0 0 Valve 7.046071655

1.237497258 1.237497258

0 0

6.098436237 9.319267511

r Gathering and Boosting Component Counts

Non- Grand Total Reciprocating

Compressor Component Compressors

0 33 Compressor seal 44

433 526 Connector 79

6 7 OEL 10

83 93 Other 1

0 0 Valve 102

2 2

0 0

490 665

Processing THC Emissions Average (scf/hr)

Non- Grand Total Reciprocating

Compressor Component Compressors

0 135.5768711 Compressor seal 120.8533705

4.403711266 7.613020805 Connector 7.923178272

4.071345597 13.82423257 Meter 36.17960488

21.50876356 12.96138821 OEL 5.739521469

0 0.017655367 Other 0.017655367

0 0 PRV 0

44.97189699 44.97189699 Pump seal 0

6.908455658 14.96227186 Valve 18.98828241

Processing Component Counts

Non- Grand Total Reciprocating

Compressor Component Compressors

0 66 Compressor seal 99

127 716 Connector 651

6 7 Meter 2

23 56 OEL 40

0 2 Other 2

0 0 PRV 0

5 5 Pump seal 0
220 849 Valve 751

Transmission CH4 Emissions Average (scf/hr)

Leaker factor for Compressor Stations (scf/hr)

Component Leaker Count

BD 58

C 859

CONT 14

CSC 45.5

CSR 35

CV 39

OEL 72

OM 12

OTHER 1

PRV 59

REG 27

V 235

Leaker factor for Storage Stations (scf/hr)

Component Leaker Count

BD 0

C 9

CONT 1

CSC 0

CSR 1

CV 1

OEL 1

OM 0

OTHER 0

PRV 10

REG 0

V 1

r Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 1 0.09 
 CCV 13 - 

 Connector 58 5.33 

 CS 15 15.44 

 Meter - 0.19 

 OEL 16 9.84 

 PRV - 2.23 

 Pump Seal - 0.35 

 Valve 56 6.05 

Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 1 - 

 CCV 3 - 

 Connector 219 5.67 

 CS 27 - 

 Meter 2 7.22 

 OEL 31 14.03 

 PRV 1 - 

 Valve 268 7.46 

Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 2 0.09 

 CCV 16 - 

 Connector 277 5.42 

 CS 42 15.44 

 Meter 2 3.71 

 OEL 47 10.72 

 PRV 1 2.23 

 Pump Seal - 0.35 

 Valve 324 6.50 

Non- Processing Reciprocating

Compressor Comp Counts Compressors

6.098436237 Valve 175

6.391683707 Connector 93

9.011510588 Open-ended Line 10
1.237497258 Pressure Relief Valve 0

1.019795234 Meter 1

Transmission Comp Coun Clearstone II

Valve 114

Connector 86

Open-ended Line 10

Pressure Relief Valve 0

Meter 0
ge (scf/hr)

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

17.02409315 40.90429618 0 40.90429618

0.558244821 8.315149956 0.365706335 7.638601563

0 26.06163388 2.122063398 23.88530929

0 1659.557503 0 1659.557503

13.16637605 7.690314223 1.334763753 7.273556815

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

7 51 0 51

7 86 8 94

0 10 1 11

0101

12 114 8 122

ALL

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

0 120.8533705 0 120.8533705

3.437296363 7.719274549 5.940839957 6.917403879

0 36.17960488 2.545570415 7.350432482

17.57569818 6.56530124 11.72317869 10.23466372

0 0.017655367 0 0.017655367

0 0 1.237497258 1.237497258

0 0 44.97189699 44.97189699

2.49033234 17.90073098 6.34942817 12.48367352

ALL

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

0 99 0 99

31 682 560 1242

0 2 12 14

3 43 106 149

0202

0022

0055
53 804 710 1514

THC Leaker

 Factors (scf/hr)

581.9097218

2.865502443

10.60842583

218.8089602

229.3423887

3.684069344

23.06396484

15.30259736

0.070087354

39.81932875

10.43919821

11.13798666

THC Leaker

 Factors (scf/hr)

0

0.596249055

1.630343125

0

37.46864805

0.171807459

53.09947139

0

0

33.10802851

0

0.946768765

Before De-Methanizer

Centrifugal ALL NonCompressors Compressors Compressor

 1 - 1 
 13 - - 

 73 15 333 

 18 3 2 

 - - 3 

 16 - 68 

 - - 7 

 - - 1 

 74 18 442 

After De-Methanizer

Centrifugal ALL NonCompressors Compressors Compressor

 1 - - 

 3 - - 

 248 29 111 

 28 1 - 

 2 - 3 

 35 4 18 

 1 - - 

 320 52 212 

ALL

Centrifugal ALL NonCompressors Compressors Compressor

 2 - 1 

 16 - - 

 321 44 444 

 46 4 2 

 2 - 6 

 51 4 86 

 1 - 7 

 - - 1 

 394 70 654 

Centrifugal ALL NonCompressors Compressors Compressor

0 175 490

0 93 433

0 10 83
002

016

Canadian Data

235

859

72

59

13
Overall Gas Emission Factors

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 2.4

Connector 3.4

Open-ended Line 16.1 

Pressure Relief Valve - 

Meter -

Reciprocating Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 17.2

Connector 7.5

Open-ended Line 5.2 

Pressure Relief Valve - 

Meter 35.3

All Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 16.21

Connector 7.29

Open-ended Line 5.94 

Pressure Relief Valve - 

Meter 35.26

Non-Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 5.47

Condensed 

Categories

Clearstone I

Condensed 

Categories

Clearstone I

Condensed 

Categories

Clearstone I

Condensed 

Categories

Clearstone I
Connector 4.95

Open-ended Line 10.26 

Pressure Relief Valve 1.00 

Meter 2.40
Before

De-Methanizer

After

De-Methanizer

 2.4 - 

 3.4 - 

 16.1 - 

 - - 

 - - 

Before

De-Methanizer

After

De-Methanizer

 17.9 34.5 

 8.2 2.0 

 5.5 3.5 

 - - 

 70.5 0.02 

Canada 1998

Before

De-Methanizer

After

De-Methanizer Transmission

 16.64 34.45 

 7.94 1.99 

 6.50 3.49 

 - - 

 70.51 0.02 

Canada 1998

Before

De-Methanizer

After

De-Methanizer Distribution

 6.71 4.73 

Clearstone II

Clearstone II

Clearstone II

Clearstone II
 4.29 13.53 

 20.97 5.11 

 - - 

 3.99 2.23 
Clearstone II (March 2006) Last Updated 

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 150.0396398 0 150.0396398

Connector 1.992287135 0 1.992287135

Meter 0.018047356 0 0.018047356

OEL 3.485548628 0 3.485548628

Other 0 0 0

PRV 0 0 0

Pump seal 0 0 0

Valve 34.4517912 0 34.4517912

Processing Component Counts Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 33 0 33

Connector 93 0 93

Meter 1 0 1

OEL 10 0 10

Other 0 0 0

PRV 0 0 0

Pump seal 0 0 0

Valve 175 0 175

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 128.3091013 0 128.3091013

Connector 8.189718831 3.355285995 7.935274998

Meter 70.50827178 0 70.50827178

OEL 5.540630612 16.14834728 6.504968491

Other 0.017266678 0 0.017266678

PRV 0 0 0

Pump seal 0 0 0

Valve 17.94256951 2.427232144 16.63523584

Processing Component Counts After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 66 0 66

Connector 558 31 589

Meter 1 0 1

OEL 30 3 33

Other 2 0 2

PRV 0 0 0

Pump seal 0 0 0
Valve 576 53 629
12/21/2009

r Gathering and Boo

Non- Grand Total

Compressor Component

0 150.0396398 Compressor seal

13.52806279 12.33470669 Connector

2.226948328 1.122497842 OEL

5.110692272 4.907549316 Other

0 0 Valve

0 0

0 0

4.729572109 19.33297455

r Gathering and Boo

Non- Grand Total

Compressor Component

0 33 Compressor seal

433 526 Connector

6 7 OEL

83 93 Other

0 0 Valve

2 2

0 0

490 665

Processing CH4 E

Non- Grand Total

Compressor Component

0 128.3091013 Compressor seal

4.286696087 7.288110861 Connector

3.986907578 13.48995961 Meter

20.9669997 12.44473131 OEL

0 0.017266678 Other

0 0 PRV

44.81948591 44.81948591 Pump seal

6.705736641 14.06222073 Valve

Processing Compo

Non- Grand Total

Compressor Component

0 66 Compressor seal

127 716 Connector

6 7 Meter

23 56 OEL

0 2 Other

0 0 PRV

5 5 Pump seal
220 849 Valve
osting CH4 Emissions Average (scf/hr)

Reciprocating Centrifugal ALL Non- Grand Total

Compressors Compressors Compressors Compressor

36.78494791 16.25966586 33.96775233 0 33.96775233

8.403505028 0.533124015 7.76289262 0.32897525 7.130218802

21.49598465 0 21.49598465 2.026777079 19.72605669

1496.258441 0 1496.258441 0 1496.258441

6.20993638 12.57447503 6.879887817 1.085788523 6.49994688

osting Component Counts

Reciprocating Centrifugal ALL Non- Grand Total

Compressors Compressors Compressors Compressor

44 7 51 0 51

79 7 86 8 94

10 0 10 1 11

1 0101

102 12 114 8 122

Emissions Average (scf/hr) ALL

Reciprocating Centrifugal ALL Non- Grand Total

Compressors Compressors Compressors Compressor

109.9940391 0 109.9940391 0 109.9940391

7.475201457 3.355285995 7.287932572 4.945302828 6.231674394

35.26135392 0 35.26135392 2.39991882 7.094409548

5.169528148 16.14834728 5.935492273 10.25672465 9.009657588

0.017266678 0 0.017266678 0 0.017266678

0 0 0 1.003257155 1.003257155

0 0 0 44.81948591 44.81948591

17.17941173 2.427232144 16.20694218 5.472359742 11.17289097

onent Counts ALL

Reciprocating Centrifugal ALL Non- Grand Total

Compressors Compressors Compressors Compressor

99 0 99 0 99

651 31 682 560 1242

2 0 2 12 14

40 3 43 106 149

2 0202

0 0022

0 0055
751 53 804 710 1514
Processing

Leaker Emission Factors - Reciprocating Compressor Components, Gas Service

Valve

Connector

Open-ended Line

Pressure Relief Valve

Meter

Leaker Emission Factors - Centrifugal Compressor Components, Gas Service

Valve

Connector

Open-ended Line

Dry Seal

Leaker Emission Factors - Other Components, Gas Service

Valve

Connector

Open-ended Line

Pressure Relief Valve

Meter

Population Emission Factors - Other Components, Gas Service

Gathering Pipelines1

1

 Emission Factor is in units of "scf/hour/mile", reporter to use Equation W-XXXX

Tranmission

Leaker Emission Factors - All Components, Gas Service

Connector

Block Valve

Control Valve

Compressor Blowdown Valve

Pressure Relief Valve

Orifice Meter

Other Meter

Regulator

Open-ended Line

Population Emission Factors - Other Components, Gas Service

Low-Bleed Pneumatic Device Vents

Gathering Pipelines1

1

 Emission Factor is in units of "scf/hour/mile"

Onshore production

Population Emission Factors - All Components, Gas Service

Valve

Connector

TABLE W-1 OF SUBPART W - DEFAULT NATURAL GAS EMISSION FACTORS

TABLE W-2 OF SUBPART W - DEFAULT METHANE EMISSION FACTO

TABLE W-3 OF SUBPART W - DEFAULT METHANE EMISSION FACTO
Open-ended Line

Pressure Relief Valve

Low-Bleed Pneumatic Device Vents

Gathering Pipelines1

CBM Well Water Production2

Compressor Starter Gas Vent

Conventional Gas Well Completion3

Conventional Gas Well Workover 4

Population Emission Factors - All Components, Light Crude Service5

Valve

Connector

Open-ended Line

Pump

Other

Population Emission Factors - All Components, Heavy Crude Service6

Valve

Flange

Connector (other)

Open-ended Line

Other

1

 Emission Factor is in units of "scf/hour/mile"

3

 Emission Factor is in units of "scf/completion"

4

 Emission Factor is in units of "scf/workover"

5

 Hydrocarbon liquids greater than or equal to 20 ̊API are considered "light crude"

6

 Hydrocarbon liquids less than 20 ̊API are considered "heavy crude"

Underground Storage

Leaker Emission Factors - Storage Station, Gas Service

Connector

Block Valve

Control Valve

Compressor Blowdown Valve

Pressure Relief Valve

Orifice Meter

Other Meter

Regulator

Open-ended Line

Population Emission Factors - Storage Wellheads, Gas Service

Connector

Valve

Pressure Relief Valve

Open-ended Line

Population Emission Factors - Other Components, Gas Service

Low-Bleed Pneumatic Device Vents

2

 Emission Factor is in units of "scf methane/gallon", in this case the operating facto

by methane content

TABLE W-4 OF SUBPART W - DEFAULT METHANE EMISSION FACTORS FO
LNG Storage

Leaker Emission Factors - LNG Storage Components, LNG Service

Valve

Pump Seal

Connector

Other

Population Emission Factors - LNG Storage Compressor, Gas Service

Vapor Recovery Compressor

LNG Terminals

Leaker Emission Factors - LNG Storage Components, LNG Service

Valve

Pump Seal

Connector

Other

Population Emission Factors - LNG Storage Compressor, Gas Service

Vapor Recovery Compressor

Distribution

Leaker Emission Factors - Above Grade M&R Stations Components, Gas Service

Connector

Block Valve

Control Valve

Pressure Relief Valve

Orifice Meter

Other Meter

Regulator

Open-ended Line

Population Emission Factors - Below Grade M&R Stations Components, Gas Serv

Below Grade M&R Station, Inlet Pressure > 300 psig

Below Grade M&R Station, Inlet Pressure 100 to 300 psig

Below Grade M&R Station, Inlet Pressure < 100 psig

Population Emission Factors - Gathering Pipelines, Gas Service

Gathering Pipelines2

Population Emission Factors - Distribution Mains, Gas Service3

Unprotected Steel

Protected Steel

Plastic

TABLE W-5 OF SUBPART W - DEFAULT METHANE EMISSION FACTO

TABLE W-6 OF SUBPART W - DEFAULT METHANE EMISSION FACTOR

TABLE W-7 OF SUBPART W - DEFAULT METHANE EMISSION FACTO
Cast Iron

Population Emission Factors - Distribution Services, Gas Service3

Unprotected Steel

Protected Steel

Plastic

Copper

1

 Emission Factor is in units of "scf/hour/station"

2

 Emission Factor is in units of "scf/hour/mile"

3

 Emission Factor is in units of "scf/hour/service"

Gas Flaring

Population Emission Factors - Gas Flaring

Gas Production

Sweet Gas Processing

Sour Gas Processing

Conventional Oil Production1

Heavy Oil Production2

1

 Emission Factor is in units of "metric tons/barrel conventional oil production"

2

 Emission Factor is in units of "metric tons/barrel heavy oil production"

TABLE W-8 OF SUBPART W - DEFAULT NITROUS OXIDE EMISSION FA
Initial Re-proposal Emission Factor 

(scf/hour/component)

Revised Emission Factor 

(scf/hour/component)

13.47

8.48

16.57

28.45

33.88

1.90

2.36

8.86

4.52

4.26

22.81

12.90

2.25

2.81

Initial Re-proposal Emission Factor 

(scf/hour/component)

Revised Emission Factor 

(scf/hour/component)

 0.96

2.02

3.94

 66.15

19.80

 0.46

0.01

1.03

6.01

2.57

2.62

Emission Factor (scf/hour/component)

 0.08

0.01

S FOR ONSHORE PRODUCTION

ORS FOR PROCESSING

ORS FOR TRANSMISSION
 0.04

0.17

2.75

2.81

0.11

1.22

46,510

3,114

0.11

0.01

0.10

0.03

0.64

0.001

0.002

0.001

0.01

0.01

Emission Factor (scf/hour/component)

 0.96

2.02

3.94

 66.15

19.80

 0.46

0.01

1.03

6.01

 0.01

0.10

0.17

0.03

2.57

or is "gallons/year" and do not multiply 

OR UNDERGROUND STORAGE
Emission Factor (scf/hour/component)

1.19

4.00

0.34

1.77

6.81

Emission Factor (scf/hour/component)

1.19

4.00

0.34

1.77

6.81

Emission Factor (scf/hour/component)

 0.67

1.49

3.94

5.24

0.46

0.01

2.14

6.01

vice1

1.30

0.20

0.10

2.62

12.58

0.35

1.13

ORS FOR LNG STORAGE

RS FOR LNG TERMINALS

ORS FOR DISTRIBUTION
27.25

0.19

0.02

0.001

0.03

Emission Factor 

(metric tons/MMcf gas production or 

receipts)

5.9 × 10-7

7.1 × 10-7

1.5 × 10-6

1.0 × 10-4

7.3 × 10-5

ACTORS FOR GAS FLARING 2004 API Compendium, 

Table 4-7, page 4-30




Processing1

Before De-Methanizer

Emission Factor 

(scf/hour/component)

After De-Methani

Emission Facto

(scf/hour/compone

Leaker Emission Factors - Reciprocating Compressor Components, Gas Service

Valve 15.88 Connector 4.31 Open-ended Line 17.90 Pressure Relief Valve 2.01 Meter 0.02 

Leaker Emission Factors - Centrifugal Compressor Components, Gas Service

Valve 0.67 Connector 2.33 Open-ended Line 17.90 

Leaker Emission Factors - Other Components, Gas Service2

ValveConnectorOpen-ended LinePressure Relief ValveMeter

Population Emission Factors - Other Components, Gas Service

Gathering Pipelines3

1 Leaker emission factors from Clearstone (2002) and Clearstone (2005) reports2 These leaker emission factors apply to the entire processing sector and are given in scf/hour/components3 Emission Factor is in units of "scf/hour/mile", reporter to use Equation W-XXXX

Tranmission Emission Factor (scf/hour/component)

Leaker Emission Factors - All Components, Gas Service

Connector 2.7Block Valve 10.4Control Valve 3.4 Compressor Blowdown Valve 543.5Pressure Relief Valve 37.2Orifice Meter 14.3Other Meter 0.1Regulator 9.8Open-ended Line 21.5

Population Emission Factors - Other Components, Gas Service

Low-Bleed Pneumatic Device Vents 2.57Gathering Pipelines1 2.62

1 Emission Factor is in units of "scf/hour/mile"

TABLE W-3 OF SUBPART W - DEFAULT METHANE EMISSION FACTORS FOR TRANSMISSION

TABLE W-2 OF SUBPART W - TOTAL HYDROCARBON EMISSION FACTORS FOR PROCESSING

6.425.71

11.27

2.012.932.81
Methane Gas Emission Factors

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 1.9 0.5 2.4 2.4 

Connector 2.4 1.8 2.6 3.4 

Open-ended Line 14.1 - 14.1 16.1 

Pressure Relief Valve - - - - 

Meter - - - - 

Reciprocating Compressors

All 

Processing 

Before

De-Methanizer 

After

De-Methanizer 

 All 

Processing 

Valve 13.5 6.5 15.0 17.18 

Connector 8.5 3.8 9.7 7.48 

Open-ended Line 16.6 20.4 14.5 5.17 

Pressure Relief Valve 28.4 - 28.4 - 

Meter - 33.9 33.9 35.26 

All Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 11.4 5.0 12.9 16.2 

Connector 7.6 3.4 8.9 7.3 

Open-ended Line 16.4 20.4 14.4 5.9 

Pressure Relief Valve 28.4 - 28.4 - 

Meter - 33.9 33.9 35.3 

Non-Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 5.5 4.8 7.0 5.5 

Connector 4.5 4.2 5.3 4.9 

C

C

C

C

Condensed 

Categories 

(scf/hr)

Clearstone I (2002)

Condensed 

Categories 

(scf/hr)

Clearstone I (2002)

Condensed Clearstone I (2002)

Categories 

(scf/hr)

Condensed 

Categories 

(scf/hr)

Clearstone I (2002)
Open-ended Line 9.3 8.1 13.9 10.3 

Pressure Relief Valve 1.8 1.8 - 1.0 

Meter 0.2 3.4 6.7 2.4 

Annomalies

- Clearstone II (After De-Methanizer) Open Ended Lines: centrifugal is greater than recipr

- Clearstone II (Before De-Methanizer) Connectors: non-compressor is greater than comp

- Clearstone II (Before De-Methanizer) Meters: non-compressor is greater than compress

- Clearstone II (After De-Methanizer) Open Ended Lines: non-compressor is greater than 
Before

De-Methanizer

After

De-Methanizer

 2.4 - 12.6 

 3.4 - 0.5 

 16.1 - - 

 - - - 

 - - - 

 Before

De-Methanizer 

 After

De-Methanizer 

 17.94 14.67 6.2 

 8.19 3.19 8.4 

 5.54 4.06 21.5 

 - - - 

 70.51 0.01 - 

Canada 1998/2007

Before

De-Methanizer

After

De-Methanizer Transmission

 16.6 14.7 10.4 6.9 

 7.9 3.2 2.7 7.8 

 6.5 4.1 21.5 21.5 

 - - 37.2 - 

 70.5 0.01 13.2 - 

Canada 1998/2007

Before

De-Methanizer

After

De-Methanizer Distribution

 6.7 4.9 0.6 1.1 

 4.3 5.1 2.1 0.3 

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

learstone II (2006)

learstone II (2006)

learstone II (2006)

learstone II (2006)
 21.0 7.3 26.1 2.0 

 - 1.0 0.3 - 

 4.0 0.8 0.2 - 

rocating because there are only three data points for centrifugal compressors.

pressor emissions because molecular sieve, NRU, and Amine building emissions are large. 

sor emissions because there is only one compressor data point and four non-compressor data points.

n compressor emissions because there are some large emissions from generators and flare vents.
All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 2.1 - 2.4 

Connector 2.8 - 3.0 

Open-ended Line 15.0 - 15.0 

Pressure Relief Valve - - -

Meter -- -

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 16.1 12.7 17.0 

Connector 7.8 3.4 8.6 

Open-ended Line 16.3 26.2 10.4 

Pressure Relief Valve - - -

Meter - - 34.6

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 14.6 11.8 15.4 

Connector 7.4 3.3 8.2 

Open-ended Line 16.2 26.2 10.9 

Pressure Relief Valve - - -

Meter - - 34.6

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 5.5 4.9 6.8 

Connector 4.8 4.8 4.8 

Clearstone I (2002) v. Clearstone II (2006)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

(scf/hr)

Combined Clearstone

(scf/hr)
Open-ended Line 11.6 8.4 22.7 

Pressure Relief Valve 1.6 1.6 -

Meter 0.6 2.7 4.9 
Methane Gas Emission Factors

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 70.00 18.00 52.00 53.00 

Connector 44.00 15.00 29.00 31.00 

Open-ended Line 4.00 - 4.00 3.00 

Pressure Relief Valve - - - - 

Meter - - - - 

Reciprocating Compressors

All 

Processing 

Before

De-Methanizer 

After

De-Methanizer 

 All 

Processing 

Valve 324.00 56.00 268.00 751.00 

Connector 277.00 58.00 219.00 651.00 

Open-ended Line 47.00 16.00 31.00 40.00 

Pressure Relief Valve 1.00 - 1.00 - 

Meter - 2.00 2.00 2.00 

All Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 394.00 74.00 320.00 804.00 

Connector 321.00 73.00 248.00 682.00 

Open-ended Line 51.00 16.00 35.00 43.00 

Pressure Relief Valve 1.00 - 1.00 - 

Meter - 2.00 2.00 2.00 

Non-Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Valve 654.00 442.00 212.00 710.00 

Connector 444.00 333.00 111.00 560.00 

Clearstone I (2002) Condensed 

Categories

Condensed 

Categories

Clearstone I (2002)

Condensed 

Categories

Clearstone I (2002)

Condensed 

Categories

Clearstone I (2002)

C

C

C

C
Open-ended Line 86.00 68.00 18.00 106.00 

Pressure Relief Valve 7.00 7.00 - 2.00 

Meter 3.00 6.00 3.00 12.00 

Annomalies

- Clearstone II (After De-Methanizer) Open Ended Lines: centrifugal is greater than recipr

- Clearstone II (Before De-Methanizer) Connectors: non-compressor is greater than comp

- Clearstone II (Before De-Methanizer) Meters: non-compressor is greater than compress

- Clearstone II (After De-Methanizer) Open Ended Lines: non-compressor is greater than 
Before

De-Methanizer

After

De-Methanizer

 53.00 - 12.0 

 31.00 - 7.0 

 3.00 - - 

 - - - 

 - - - 

 Before

De-Methanizer 

 After

De-Methanizer 

 576.00 175.00 102.0 

 558.00 93.00 79.0 

 30.00 10.00 10.0 

 - - - 

 1.00 1.00 - 

Canada 1998/2007

Before

De-Methanizer

After

De-Methanizer Transmission

 629.00 175.00 235.00 114.0 

 589.00 93.00 859.00 86.0 

 33.00 10.00 72.00 10.0 

 - - 59.00 - 

 1.00 1.00 11.15 - 

Canada 1998/2007

Before

De-Methanizer

After

De-Methanizer Distribution

 220.00 490.00 27.00 8.0 

 127.00 433.00 40.00 8.0 

Clearstone II (2006) 

Gathering 

Compressor 

Stations

Clearstone II (2006) 

Gathering 

Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

Clearstone II (2006) 

Gathering Compressor 

Stations

learstone II (2006)

learstone II (2006)

learstone II (2006)

learstone II (2006)
 23.00 83.00 5.00 1.0 

 - 2.00 8.00 - 

 6.00 6.00 4.00 - 

rocating because there are only three data points for centrifugal compressors.

pressor emissions because molecular sieve, NRU, and Amine building emissions are large. 

sor emissions because there is only one compressor data point and four non-compressor data 

n compressor emissions because there are some large emissions from generators and flare ven
All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 123.0 - 105.0 

Connector 75.0 - 60.0 

Open-ended Line 7.0 - 7.0 

Pressure Relief Valve - - -

Meter -- -

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 1,075.0 231.0 844.0 

Connector 928.0 151.0 777.0 

Open-ended Line 98.0 36.0 62.0 

Pressure Relief Valve - - -

Meter - - 4.0

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 1,198.0 249.0 949.0 

Connector 1,003.0 166.0 837.0 

Open-ended Line 105.0 36.0 69.0 

Pressure Relief Valve - - -

Meter - - 4.0

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 1,365.0 933.0 432.0 

Connector 1,010.0 772.0 238.0 

Combined Clearstone

Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Clearstone

Counts

Clearstone I (2002) v. Clearstone II (2006)
Open-ended Line 199.0 155.0 44.0 

Pressure Relief Valve 10.0 9.0 -

Meter 9.0 18.0 9.0 

 points.

nts.
Clearstone II (March 2006) Last Updated 

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 73.36391472 73.36391472

Connector 3.188097212 3.188097212

Meter 0.014436052 0.014436052

OEL 4.056220755 4.056220755

Other 0 0

PRV 0 0

Pump seal 0 0

Valve 14.66753242 14.66753242

Processing Component Counts Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 33 0 33

Connector 93 0 93

Meter 1 0 1

OEL 10 0 10

Other 0 0 0

PRV 0 0 0

Pump seal 0 0 0

Valve 175 0 175

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 128.3091013 0 128.3091013

Connector 8.189718831 3.355285995 7.935274998

Meter 70.50827178 0 70.50827178

OEL 5.540630612 16.14834728 6.504968491

PRV 0 0 0

Pump seal 0 0 0

Valve 17.94256951 2.427232144 16.63523584

Processing Component Counts After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

Compressor seal 66 0 66

Connector 558 31 589

Meter 1 0 1

OEL 30 3 33

PRV 0 0 0

Pump seal 0 0 0

Valve 576 53 629
Canadian Data (CEPEI Fugitive Emissions Data)

Distribution CH4 Emissions Average (scf/hr)

Leaker Factors for Gate Stations

CH4 Leaker

Component Leaker Count Factors (scf/hr)

BD 0 0

C 37 2.269315566

CONT 4 24.67124995

CSC 0 0

CSR 0 0

CV 17 9.340237376

OEL 5 26.13129014

OM 4 0.211765015

OTHER 0 0

PRV 6 0.237547813

REG 5 0.926618309

V 26 0.64179352

Leaker Factors for District Regulating Stations

CH4 Leaker

Component Leaker Count Factors (scf/hr)

BD 0 0

C 3 0.188540543

CONT 0 0

CSC 0 0

CSR 0 0

CV 0 0

OEL 0 0

OM 0 0

OTHER 0 0

PRV 2 0.486525826

REG 0 0

V 1 0.044564128

Clearstone I (2002)

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 156.32 - 156.32 

CCV 25.66 - 25.66 

Connector 3.77 1.83 3.37 
CS 270.61 33.04 231.01 

Meter - - - 

OEL 20.40 - 20.40 

PRV - - - 

Pump Seal - - - 

Valve 6.47 0.53 5.02 

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 50.86 - 50.86 

CCV 100.53 - 100.53 

Connector 9.73 2.64 8.90 

CS 89.00 86.36 88.91 

Meter 33.88 - 33.88 

OEL 14.46 14.12 14.42 

PRV 28.45 - 28.45 

Valve 14.96 2.37 12.92 

Processing CH4 Emissions Average (scf/hr) ALL

Reciprocating Centrifugal ALL

Component Compressors Compressors Compressors

BD 103.59 - 103.59 

CCV 39.70 - 39.70 

Connector 8.48 2.36 7.65 

CS 153.86 46.37 144.51 

Meter 33.88 - 33.88 

OEL 16.57 14.12 16.38 

PRV 28.45 - 28.45 

Pump Seal - - - 

Valve 13.47 1.90 11.41 

Combined for Summary Sheet

Reciprocating Centrifugal ALL

Processing EFs Compressors Compressors Compressors

Valve 14.66753242 0 14.66753242

Connector 3.188097212 0 3.188097212

Open-ended Line 4.056220755 0 4.056220755

Pressure Relief Valve 0 0 0

Meter 0.014436052 0 0.014436052
Transmission EFs Clearstone II Canadian Data

Valve 6.879887817 10.40287954

Connector 7.76289262 2.676379282

Open-ended Line 21.49598465 21.54174316

Pressure Relief Valve 0 37.19125305

Meter 0 13.19822867
12/17/2009

r Gathering and Boosting CH4 Emissions Aver

Non- Grand Total Reciprocating

Compressor Component Compressors

0 73.36391472 Compressor seal 36.78494791

5.138473858 4.793635401 Connector 8.403505028

0.812930062 0.69885949 OEL 21.49598465

7.288817104 6.941226099 Other 1496.258441

0 0 Valve 6.20993638

1.003257155 1.003257155

0 0

4.918598685 7.484107561

r Gathering and Boosting Component Counts

Non- Grand Total Reciprocating

Compressor Component Compressors

0 33 Compressor seal 44

433 526 Connector 79

6 7 OEL 10

83 93 Other 1

0 0 Valve 102

2 2

0 0

490 665

Processing CH4 Emissions Average (scf/hr)

Non- Grand Total Reciprocating

Compressor Component Compressors

0 128.3091013 Compressor seal 109.9940391

4.286696087 7.288110861 Connector 7.475201457

3.986907578 13.48995961 Meter 35.26135392

20.9669997 12.44473131 OEL 5.169528148

0 0 PRV 0

44.81948591 44.81948591 Pump seal 0

6.705736641 14.06222073 Valve 17.17941173

Processing Component Counts

Non- Grand Total Reciprocating

Compressor Component Compressors

0 66 Compressor seal 99

127 716 Connector 651

6 7 Meter 2

23 56 OEL 40

0 0 PRV 0

5 5 Pump seal 0

220 849 Valve 751
Transmission CH4 Emissions Average (scf/h

Leaker factor for Compressor Stations (scf/h

Component Leaker Count

BD 58

C 859

CONT 14

CSC 45.5

CSR 35

CV 39

OEL 72

OM 12

OTHER 1

PRV 59

REG 27

V 235

Leaker factor for Storage Stations (scf/hr)

Component Leaker Count

BD 0

C 9

CONT 1

CSC 0

CSR 1

CV 1

OEL 1

OM 0

OTHER 0

PRV 10

REG 0

V 1

r Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 1 0.07 

 CCV 13 - 

 Connector 58 4.23 
 CS 15 12.17 

 Meter - 0.15 

 OEL 16 8.12 

 PRV - 1.76 

 Pump Seal - 0.28 

 Valve 56 4.83 

Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 1 - 

 CCV 3 - 

 Connector 219 5.29 

 CS 27 - 

 Meter 2 6.74 

 OEL 31 13.88 

 PRV 1 - 

 Valve 268 6.97 

Processing Component Counts

Non- Reciprocating

Compressor Component Compressors

 BD 2 0.07 

 CCV 16 - 

 Connector 277 4.50 

 CS 42 12.17 

 Meter 2 3.45 

 OEL 47 9.31 

 PRV 1 1.76 

 Pump Seal - 0.28 

 Valve 324 5.53 

Non- Processing Reciprocating

Compressor Comp Counts Compressors

4.918598685 Valve 175

5.138473858 Connector 93

7.288817104 Open-ended Line 10

1.003257155 Pressure Relief Valve 0

0.812930062 Meter 1
Transmission 

Comp Counts Clearstone II

Valve 114

Connector 86

Open-ended Line 10

Pressure Relief Valve 0

Meter 0
rage (scf/hr)

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

16.25966586 33.96775233 0 33.96775233

0.533124015 7.76289262 0.32897525 7.130218802

0 21.49598465 2.026777079 19.72605669

0 1496.258441 0 1496.258441

12.57447503 6.879887817 1.085788523 6.49994688

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

7 51 0 51

7 86 8 94

0 10 1 11

0101

12 114 8 122

ALL

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

0 109.9940391 0 109.9940391

3.355285995 7.287932572 4.945302828 6.231674394

0 35.26135392 2.39991882 7.094409548

16.14834728 5.935492273 10.25672465 9.009657588

0 0 1.003257155 1.003257155

0 0 44.81948591 44.81948591

2.427232144 16.20694218 5.472359742 11.17289097

ALL

Centrifugal ALL Non- Grand Total

Compressors Compressors Compressor

0 99 0 99

31 682 560 1242

0 2 12 14

3 43 106 149

0022

0055

53 804 710 1514
r)

r)

CH4 Leaker

 Factors (scf/hr)

543.5036801

2.676379282

9.908269728

204.3675688

214.2057911

3.440920768

21.54174316

14.29262593

0.065461588

37.19125305

9.750211124

10.40287954

CH4 Leaker

 Factors (scf/hr)

0

0.556896617

1.522740479

0

34.99571728

0.160468167

49.59490628

0

0

30.92289863

0

0.884282027

Before De-Methanizer

Centrifugal ALL NonCompressors Compressors Compressor

 1 - 1 

 13 - - 

 73 15 333 
 18 3 2 

 - - 3 

 16 - 68 

 - - 7 

 - - 1 

 74 18 442 

After De-Methanizer

Centrifugal ALL NonCompressors Compressors Compressor

 1 - - 

 3 - - 

 248 29 111 

 28 1 - 

 2 - 3 

 35 4 18 

 1 - - 

 320 52 212 

ALL

Centrifugal ALL NonCompressors Compressors Compressor

 2 - 1 

 16 - - 

 321 44 444 

 46 4 2 

 2 - 6 

 51 4 86 

 1 - 7 

 - - 1 

 394 70 654 

Centrifugal ALL NonCompressors Compressors Compressor

0 175 490

0 93 433

0 10 83

002

016
Canadian Data

235

859

72

59

13