Informational Postings :: Tennessee Gas Pipeline Company, L.L.C.

Informational Postings

Notice Detail

TSP/TSP Name: 1939164-TENNESSEE GAS PIPELINE	Critical: Y
Notice Type Desc (1): MAINTENANCE	Notice Type Desc (2): MAINTENANCE
Notice Eff Date/Time: 04/17/2025 3:40:39PM	Notice End Date/Time: 04/18/2025 9:00:00am
Post Date/Time: 4/17/2025 3:40:39 PM	Notice ID: 394334
Reqrd Rsp: 1	Rsp Date: 04/17/2025
Notice Stat Desc: INITIATE	Prior Notice:
Subject: TGP Outage Impact Report

Notice Text:

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

Seven Day Forecast (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station / Seg

Est Nominal

Operating Capacity (Thousand Dth)

Monday

(4/21)

Tuesday

(4/22)

Wednesday

(4/23)

Thursday

(4/24)

Friday

(4/25)

Saturday

(4/26)

Sunday

(4/27)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409

(Donna Line) (segment 490 FH)

564

564

MLV 406

(segment 406 BH)

456

416

(40)

416

(40)

416

(40)

416

(40)

416

(40)

456

MLV 406-1 to MLV 407-1: Immediate Anomaly Remediation (4/10/2025 -

4/25/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 FH)

980

840

(140)

840

(140)

840

(140)

840

(140)

840

(140)

840

(140)

840

(140)

MLV 1-1BL to MLV 3-1: Anomaly Remediation (4/18/2025 - 6/3/2025)

Station 17

(segment 117 FH)

758

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

MLV 17-3 to MLV 18-3: Emergent Repair (1/22/2025 - TBD)

Station 25

(segment 125 FH)

714

609

(105)

609

(105)

609

(105)

609

(105)

609

(105)

609

(105)

609

(105)

MLV 25-3D to MLV 27-3: Anomaly Remediation (M) (4/10/2025 - 5/3/2025)

Station 40 South

(segment 132 FH)

912

777

(135)

777

(135)

777

(135)

777

(135)

777

(135)

777

(135)

777

(135)

MLV 37-2 to MLV 38-2: Anomaly Remediation (4/14/2025 - 5/16/2025)

Sta 32: Unit 3B - Compressor Overhaul (4/14/2025 - 4/30/2025)

Station 40 KN South (segment 501

FH)

268

268

200

(68)

268

Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (4/22/2025)

Station 47

(segment 143 FH)

1,184

1109

(75)

1109

(75)

1109

(75)

1109

(75)

1049

(135)

1119

(65)

1119

(65)

MLV 40-3 to MLV 47-3: Pig Run - EMAT 4/22/25 (M) (4/22/2025)

MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025) MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 58-4 to MLV 59-4: Shallow Pipe Lowering (4/7/2025 - 4/25/2025) MLV 59-4 to MLV 60-4: Shallow Pipe Lowering (4/25/2025 - 5/1/2025)

Sta 42-2BL to Sta 47-2S: Pig Runs - Cleaning / Gauge 4/24 - 4/26 (4/24/2025 - 4/26/2025)

Sta 63: Unit 1D - Overhaul & Geislinger Coupling Inspection (4/7/2025 -

6/6/2025)

Station 63

(segment 163 FH)

1,233

1,233

845

(388)

1,233

845

(388)

1,233

MLV 71-3S to MLV 63-3D: Pig Runs - EMAT 4/24/25 (4/24/2025) MLV 71-3S to MLV 63-3D: Pig Runs - MFL-C 4/22/25 (4/22/2025)

Station 823

(segment 823 BH)

686

686

Station 834

(segment 834 BH)

679

670

(9)

670

(9)

670

(9)

670

(9)

670

(9)

670

(9)

670

(9)

Sta 834: Unit 5A - Cracked Main Bearing (3/17/2025 - 5/2/2025)

Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)

Station 527

(segment 527 BH)

1,565

1,565

1485

(80)

1485

(80)

1485

(80)

1485

(80)

1485

(80)

1485

(80)

MLV 530-1L to MLV 531-1: Anomaly Remediation (M) (4/22/2025 - 4/29/2025)

MLV 548

(segment 542 BH)

1,597

1510

(87)

1510

(87)

1510

(87)

1510

(87)

1510

(87)

1510

(87)

1510

(87)

Sta 534: Unit 6A - Piston Liner Replacement (3/25/2025 - 5/2/2025)

Sta 542: Unit 3A - Overhaul (2/12/2024 - 6/20/2025) Sta 542: Unit 4A - Replace Head (4/11/2025 - 5/16/2025)

Station 860

(segment 548 BH)

1,516

1495

(21)

1495

(21)

1495

(21)

1495

(21)

1495

(21)

1495

(21)

1495

(21)

Sta 555: Unit 2A - Air Manifold Pressure (4/14/2025 - 5/30/2025)

Station 860 North (Segment 860

BH)

1,793

1693

(100)

1693

(100)

1693

(100)

1693

(100)

1693

(100)

1693

(100)

1693

(100)

Sta 860: Force Majeure (8/18/2023 - TBD)

Sta 860: Unit 1A - After Cooler/jacket Water leaking into crankcase (6/17/2024 - 6/28/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2555

(90)

2555

(90)

2555

(90)

2555

(90)

2575

(70)

2575

(70)

2575

(70)

MLV 106-4 to MLV 108-4: PHMSA Immediate Anomaly Remediation (3/26/2025 - 4/25/2025)

MLV 107-4 to MLV 108-4: Anomaly Remediation (4/21/2025 - 5/4/2025) Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 4/24/2025)

Sta 106: Unit 2B- RV Failure (3/26/2025 - 5/15/2025) Sta 106: Unit 6B - Engine Inspection (4/21/2025 - 5/16/2025)

Station 114

(segment 114 BH)

920

800

(120)

800

(120)

800

(120)

800

(120)

800

(120)

800

(120)

800

(120)

Sta 114: Unit 1D - Emergent Repair (4/15/2025 - TBD)

Station 204

(Segment 204 BH)

1,827

1747

(80)

1747

(80)

1747

(80)

1747

(80)

1747

(80)

1,827

MLV 206-3 to MLV 208-3: Immediate Anomaly Remediation (4/9/2025 -

4/25/2025)

Sta 200: Unit 10A - Replacing Engine Chocks and Alignment (4/21/2025 - 4/25/2025)

Sta 209: Unit 10A - Punch Carbon / Turbo Replacement (4/21/2025 -

4/25/2025)

Station 245

(segment 245 FH)

997

997

MLV 256 West

(segment 249 FH)

1,213

1,213

920

(293)

920

(293)

920

(293)

Sta 249 Carlisle: Filter Inspection (4/25/2025 - 4/29/2025)

Station 254

(segment 256 FH)

1,213

1165

(48)

1165

(48)

1165

(48)

1180

(33)

1180

(33)

1200

(13)

1200

(13)

MLV 254-1L to MLV 255-1: Anomaly Remediation (4/21/2025 - 5/3/2025)

MLV 257-1 to MLV 258-1: Anomaly Remediation (4/21/2025 - 5/3/2025) Sta 254: Unit 1A - Compressor Rod and Packing Replacement (4/21/2025 - 4/23/2025)

Sta 254: Unit 4A - Turbo Replacement (4/21/2025 - 4/25/2025)

Station 261 Discharge East (segment 261

FH)

941

941

Fitchburg Lat to Gloucester (segment 268

FH)

202

185

(17)

185

(17)

185

(17)

185

(17)

185

(17)

185

(17)

202

MLV 270-1A to MLV 270C-101.1R: Anomaly Remediation (4/21/2025 - 4/26/2025)

Station 307

(segment 307 BH)

1,150

1,150

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

Seven Day Forecast (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station / Seg

Est Nominal

Operating Capacity (Thousand Dth)

Monday

(4/21)

Tuesday

(4/22)

Wednesday

(4/23)

Thursday

(4/24)

Friday

(4/25)

Saturday

(4/26)

Sunday

(4/27)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 315

(segment 315 BH)

1,854

1,854

Station 321

(segment 321 FH)

2,102

1870

(232)

1870

(232)

1870

(232)

1870

(232)

1870

(232)

2052

(50)

2052

(50)

Sta 321: Unit 5B - Emergent Repair (2/20/2025 - TBD)

Sta. 321: Unit 1C - Repair Cracked Weld-O-Let (4/16/2025 - 4/25/2025)

MLV 324

(segment 324 FH)

1,767

1,767

Station 405

HC Line (segment 299 FH)

803

803

This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses.

Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

May 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(4/28 - 5/4)

Week 2

(5/5 - 5/11)

Week 3

(5/12 - 5/18)

Week 4

(5/19 - 5/25)

Week 5

(5/26 - 6/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490

FH)

564

564

354

(210)

564

Sta 409: Annual ESD Test & Maintenance (5/7/2025 - 5/9/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 FH)

980

840

(140)

840

(140)

840

(140)

815

(165)

815

(165)

MLV 1-1BL to MLV 3-1: Anomaly Remediation (4/18/2025 - 6/3/2025)

MLV 4-1 to MLV 5-1: Anomaly Remediation (5/20/2025 - 6/17/2025)

Station 17

(segment 117 FH)

758

753

(5)

718

(40)

718

(40)

718

(40)

753

(5)

MLV 17-3 to MLV 18-3: Emergent Repair (1/22/2025 - TBD)

MLV 20-1A to MLV 24-1A: Anomaly Remediation (5/26/2025 - 6/13/2025) MLV 22-3 to MLV 23-3: Anomaly Remediation (5/5/2025 - 5/23/2025)

MLV 24-2 to MLV 25-2S: Pig Run - Cleaning / Gauge 5/6 to 5/8 (5/6/2025 - 5/8/2025)

MLV 24-2 to MLV 25-2S: Pig Run - Combo ILI 5/9 (5/9/2025)

Station 25

(segment 125 FH)

714

609

(105)

714

709

(5)

554

(160)

MLV 25-1 to MLV 26-1 Relocation: Highway 105 Widening (5/19/2025 -

6/6/2025)

MLV 25-2 to MLV 26-2: Anomaly Remediation (6/1/2025 - 6/15/2025) MLV 25-3 to MLV 32-3: Pig Run - Maintenance (5/27/2025)

MLV 25-3D to MLV 27-3: Anomaly Remediation (M) (4/10/2025 - 5/3/2025)

Station 40 South

(segment 132 FH)

912

777

(135)

647

(265)

777

(135)

797

(115)

717

(195)

MLV 32-2 to MLV 33-2: Anomaly Remediation (5/26/2025 - 6/13/2025)

MLV 34-2 to MLV 35-2: Anomaly Remediation (5/19/2025 - 5/30/2025) MLV 35-2 to MLV 36-2: Anomaly Remediation (5/19/2025 - 5/23/2025) MLV 36-1 to MLV 36-1A: Anomaly Remediation (6/1/2025 - 6/30/2025) MLV 36-1TX to MLV 36-1LA: Pig Run - Maintenance (5/6/2025)

MLV 37-2 to MLV 38-2: Anomaly Remediation (4/14/2025 - 5/16/2025) MLV 38-2 to MLV 39-2: Anomaly Remediation (4/28/2025 - 5/16/2025) MLV 39-1 to MLV 40-1S: Anomaly Remediation (6/1/2025 - 6/21/2025)

Sta 32: Unit 3B - Compressor Overhaul (4/14/2025 - 4/30/2025)

Station 47

(segment 143 FH)

1,181

1116

(65)

956

(225)

1076

(105)

1176

(5)

896

(285)

MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025)

MLV 47-3D TO MLV 53-3CR: Pig Runs - Cleaning & Gauge 5/27 - 5/31 (M) (5/27/2025 - 5/31/2025)

MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 54-2D TO MLV 63-2S: Pig Runs - Cleaning / Gauge 5/07/25 (5/7/2025)

MLV 54-2D TO MLV 63-2S: Pig Runs - MFL-A 5/09/25 (5/9/2025)

MLV 59-4 to MLV 60-4: Shallow Pipe Lowering (4/25/2025 - 5/1/2025) MLV 60-4 to MLV 61-4: Shallow Pipe Lowering (5/5/2025 - 5/15/2025) Sta 42-2BL to Sta 47-2S: Pig Runs - TDW MDS 4/29 (4/29/2025)

Sta 47: B Building - Clean Motor Control Center (5/5/2025 - 5/7/2025) Sta 47: C Building - Clean Motor Control Center (5/5/2025 - 5/7/2025) Sta 47: D Building - Clean Motor Control Center (5/5/2025 - 5/7/2025) Sta 47: E Building - Clean Motor Control Center (5/5/2025 - 5/7/2025) Sta 47: Transformer Inspection (5/5/2025 - 5/7/2025)

Sta 54: Unit 2D - Replace Excitation Panels - Siemens Electric (4/28/2025 - 5/2/2025)

Sta 63: Unit 1D - Overhaul & Geislinger Coupling Inspection (4/7/2025 - 6/6/2025)

Station 63

(segment 163 FH)

1,233

948

(285)

910

(323)

1,233

1090

(143)

1,233

MLV 63-2D to MLV 69-2: Pig Runs - Caliper / UMU 5/1/25 (5/1/2025)

MLV 63-2D to MLV 69-2: Pig Runs - Cleaning / Gauge 4/29/25 (4/29/2025) MLV 63-2D to MLV 69-2: Pig Runs - EMAT 5/8/25 (5/8/2025)

MLV 63-2D to MLV 69-2: Pig Runs - MFL-C 5/6/25 (5/6/2025)

MLV 63-4 to MLV 64-4: Shallow Pipe Lowering (5/19/2025 - 5/23/2025) Sta 71 Middleton: Annual ESD Test (5/7/2025 - 5/8/2025)

Sta 79 Lobelville: Annual ESD Test (5/6/2025)

Station 823

(segment 823 BH)

686

686

414

(272)

686

215

(471)

686

Sta 827 to Sta 823: Pig Run - Maintenance (M) (5/20/2025)

Sta 834 to Sta 827: Maintenance Pig (M) (5/20/2025) Sta. 823 (Kinder): Annual ESD Test (5/6/2025 - 5/7/2025)

Station 827 (Alexandria): Annual ESD and Maintenance (5/19/2025 - 5/21/2025)

Station 834

(segment 834 BH)

679

670

(9)

670

(9)

670

(9)

670

(9)

670

(9)

Sta 834: Unit 5A - Cracked Main Bearing (3/17/2025 - 5/2/2025)

Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)

Station 847

(segment 847 BH)

284

284

210

(74)

210

(74)

284

MLV 843-1 TO MLV 847-1: Pig Runs - AFD 5/20/25 (5/20/2025)

MLV 843-1 TO MLV 847-1: Pig Runs - Caliper 5/15/25 (5/15/2025)

MLV 843-1 TO MLV 847-1: Pig Runs - Cleaning / Gauge 5/13/25 (5/13/2025) MLV 843-1 TO MLV 847-1: Pig Runs - EMAT 5/22/25 (5/22/2025)

Station 523

(segment 523 FH)

329

(329)

329

MLV 523-AD2: MLV Replacement (4/28/2025 - 5/9/2025)

Station 527

(segment 527 BH)

1,565

1485

(80)

1240

(325)

1,565

1345

(220)

MLV 530-1L to MLV 531-1: Anomaly Remediation (M) (4/22/2025 - 4/29/2025)

MLV 533-1 to MLV 533-1: Hot Tap for Meter Upgrade (Meter: Carnes PIN: 420366) (M) (5/26/2025 - 5/31/2025)

MLV 533-2 to MLV 533-2: Hot Tap for Meter Upgrade (Meter: Carnes PIN: 420366) (M) (5/26/2025 - 5/31/2025)

Sta. 527 Port Sulphur: Annual ESD Test (5/6/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

May 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(4/28 - 5/4)

Week 2

(5/5 - 5/11)

Week 3

(5/12 - 5/18)

Week 4

(5/19 - 5/25)

Week 5

(5/26 - 6/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

MLV 548

(segment 542 BH)

1,597

1510

(87)

1510

(87)

1510

(87)

1587

(10)

1587

(10)

Sta 534: Unit 6A - Piston Liner Replacement (3/25/2025 - 5/2/2025)

Sta 542: Unit 3A - Overhaul (2/12/2024 - 6/20/2025) Sta 542: Unit 4A - Replace Head (4/11/2025 - 5/16/2025)

Station 860

(segment 548 BH)

1,516

1505

(11)

1505

(11)

1215

(301)

1505

(11)

1480

(36)

MLV 550-2 TO MLV 546-2: Pig Runs - EMAT 5/13/25 (5/13/2025)

Sta 550: Unit 4A - Turbocharger Exchange (5/26/2025 - 6/5/2025) Sta 555: Unit 1A - Engine Maintenance (5/5/2025 - 5/9/2025)

Sta 555: Unit 2A - Air Manifold Pressure (4/14/2025 - 5/30/2025) Sta 555: Unit 2A - Engine Maintenance (5/19/2025 - 5/23/2025) Sta 555: Unit 3A - Engine Maintenance (5/27/2025 - 5/29/2025) Sta 555: Unit 5A - Engine Maintenance (4/28/2025 - 5/2/2025)

Sta 555: Unit 6A - Engine Maintenance (5/12/2025 - 5/16/2025)

Station 860 North (Segment 860 BH)

1,793

1310

(483)

1693

(100)

1693

(100)

1693

(100)

1693

(100)

MLV 565-2 TO MLV 559-2: Pig Runs - AFD 5/2/25 (5/2/2025)

MLV 565-2 TO MLV 559-2: Pig Runs - Cleaning / Gauge 4/28/25 (4/28/2025) MLV 565-2 TO MLV 559-2: Pig Runs - CLP 4/30/25 (4/30/2025)

Sta 860: Force Majeure (8/18/2023 - TBD)

Sta 860: Unit 1A - After Cooler/jacket Water leaking into crankcase (6/17/2024 - 6/28/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2575

(70)

2565

(80)

2565

(80)

2630

(15)

2215

(430)

MLV 107-4 to MLV 108-4: Anomaly Remediation (4/21/2025 - 5/4/2025)

MLV 108-4 to MLV 109-4: Anomaly Remediation (4/28/2025 - 5/17/2025) MLV 109-4 to MLV 110-4: Anomaly Remediation (5/5/2025 - 5/17/2025) Sta 106: Unit 2B- RV Failure (3/26/2025 - 5/15/2025)

Sta 106: Unit 6B - Engine Inspection (4/21/2025 - 5/16/2025)

Sta 110 Morehead: Annual ESD Test & Substation Inspection (5/27/2025 - 5/30/2025)

Sta 87: Unit 3D - Turbocharger Exchange (4/28/2025 - 6/13/2025) Sta 871: Unit 1A - Engine Inspection (5/13/2025)

Sta 871: Unit 2A - Engine Inspection (5/5/2025)

Sta 871: Unit 2A -Compressor Unloaders (5/5/2025 - 5/9/2025) Sta 96 Campbellsville: Annual ESD Test (5/28/2025 - 5/29/2025)

Sta 96 Campbellsville: Annual Substation Inspection (5/28/2025 - 5/30/2025)

Station 114

(segment 114 BH)

920

800

(120)

720

(200)

720

(200)

720

(200)

720

(200)

MLV 115-2A to MLV 116-2: Anomaly Remediation (5/7/2025 - 5/21/2025)

MLV 116-3 to MLV 117-3: Anomaly Remediation (5/9/2025 - 6/16/2025) MLV 121-1 to MLV 118-1: Pig Re-Runs - Caliper 5/6/25 (M) (5/6/2025) Sta 114: Unit 1D - Emergent Repair (4/15/2025 - TBD)

Station 200

(segment 200 BH)

1,765

1,765

1225

(540)

1,765

MLV 200-2 to MLV 110-4: Pig Re-Runs - EMAT 5/13/25 (5/13/2025)

Station 204

(Segment 204 BH)

1,827

1531

(296)

1382

(445)

1520

(307)

1797

(30)

1717

(110)

MLV 204-2 to MLV 205-2: Anomaly Remediation (5/27/2025 - 6/1/2025)

MLV 205-2 to MLV 206-2: Anomaly Remediation (5/12/2025 - 5/21/2025) MLV 205-2 to MLV 206-2: Landslide Mitigation (5/19/2025 - 5/31/2025) MLV 207-2 to MLV 208-2: Anomaly Remediation (5/5/2025 - 5/10/2025) MLV 209-3 to MLV 210-3A: Class Change Replacement (5/27/2025 - 6/30/2025)

Sta 204: Annual ESD Test & Maintenance (5/5/2025 - 5/9/2025) Sta 204: Unit 11A - Install Aftercooler (4/28/2025 - 5/2/2025)

Sta 209 Cambridge: Annual ESD Test & Maintenance (5/12/2025 - 5/16/2025) Sta 209: Unit 13A - Crankcase Inspection (4/28/2025 - 5/2/2025)

Sta 214: Units 1A to 9A - Catalyst Cleaning (4/28/2025 - 5/2/2025)

Station 230C (segment 296

FH)

743

743

390

(353)

743

MLV 230B-201 to MLV 230B-207: Pig Run - Maintenance Cleaning 5/20 - 5/22

(5/20/2025 - 5/22/2025)

Station 237

(segment 237 FH)

1,017

1,017

905

(112)

1,017

Sta 233: Annual ESD Test (5/20/2025)

Sta 233: Point to Point and Trans Cals (5/21/2025)

Station 245

(segment 245 FH)

997

997

730

(267)

465

(532)

835

(162)

975

(22)

MLV 245-2 TO MLV 249-2: Pig Runs - Cleaning / Gauge 5/6/25 (M) (5/6/2025)

MLV 245-2 TO MLV 249-2: Pig Runs - MFL-A / Cal / IMU Combo 5/7/25 (M) (5/7/2025)

Sta 241: Unit 1A - Main Bearing, Turbo, Compressor Boring & Valve Operator (5/19/2025 - 6/21/2025)

Sta 245 West Winfield: Annual ESD Test (5/13/2025 - 5/14/2025) Sta 245: Unit 1C - Water Wash & Borescope (5/12/2025 - 5/23/2025) Sta 245-1 to MLV 249-1: Pig Run - Maintenance (5/13/2025)

Sta 249: Unit 2B - Compressor Rod & Packing Replacement (5/19/2025 - 5/23/2025)

MLV 256 West

(segment 249 FH)

1,213

890

(323)

1035

(178)

1140

(73)

1,213

Sta 249 Carlisle: Filter Inspection (4/25/2025 - 4/29/2025)

Sta 249: Unit 1A - Crankcase Inspection (4/28/2025 - 5/9/2025) Sta 249: Unit 2A - Engine Maintenance (5/12/2025 - 5/16/2025)

Station 254

(segment 256 FH)

1,213

893

(320)

1,213

893

(320)

1,213

MLV 254-1 to MLV 261-1: Pig Run - Maintenance (5/20/2025)

MLV 254-1L to MLV 255-1: Anomaly Remediation (4/21/2025 - 5/3/2025) MLV 254-2 to MLV 261-2: Pig Run - Maintenance (5/21/2025)

MLV 254-3 to MLV 258-3: Pig Run - Maintenance (5/22/2025) MLV 257-1 to MLV 258-1: Anomaly Remediation (4/21/2025 - 5/3/2025)

Sta 254 Nassau: Annual ESD Test (5/1/2025)

Sta 254 Nassau: Filter Inspection (4/30/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

May 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(4/28 - 5/4)

Week 2

(5/5 - 5/11)

Week 3

(5/12 - 5/18)

Week 4

(5/19 - 5/25)

Week 5

(5/26 - 6/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 261 Discharge East (segment 261 FH)

941

941

670

(271)

941

Sta 261: Unit 1C - 4K Maintenance Activity and Water Wash (5/12/2025 -

5/13/2025)

Sta 261: Unit 2D - Water Wash (5/16/2025)

Sta 261: Unit 5A - 4K Maintenance Activity and Water Wash (5/14/2025 - 5/15/2025)

Fitchburg Lat to Gloucester (segment 268

FH)

202

185

(17)

185

(17)

202

MLV 270C-100: ECDA (4/28/2025 - 5/11/2025)

Station 307

(segment 307 BH)

1,149

1,149

1125

(24)

940

(209)

1131

(18)

940

(209)

Sta 219: Unit 10A - Unit Valve Replacement (5/5/2025 - 6/6/2025)

Sta 219: Unit 11A - Unit Valve Replacement (5/5/2025 - 6/6/2025)

Sta 219: Unit 13A - Mounting Valve Operators / Testing (5/8/2025 - 5/9/2025) Sta 219: Unit 13A - Unit Valve Replacement (5/7/2025 - 5/8/2025)

Sta 303A: Annual ESD Test & Maintenance (5/26/2025 - 5/30/2025) Sta 303A: Unit 1A - Protective Device Checks (5/26/2025 - 5/30/2025) Sta 303A: Unit 1A - Water Wash (5/13/2025 - 5/14/2025)

Station 315

(segment 315 BH)

1,854

1,854

1430

(424)

1,854

Sta 315 Wellsboro: Annual ESD Test (5/19/2025 - 5/23/2025)

Sta 315 Wellsboro: Station Blowdown Silencer (5/19/2025 - 5/23/2025)

Station 317

(segment 317 BH)

1,579

1570

(9)

1,579

MLV 316-1 to MLV 317-1: Hot Tap New Meter Station (Meter Hemlock PIN

412822) (M) (4/28/2025 - 4/29/2025)

Station 321

(segment 321 FH)

2,102

2015

(87)

2052

(50)

2052

(50)

2052

(50)

2052

(50)

Sta 321: Unit 1C - Turbine Inspection (4/29/2025)

Sta 321: Unit 2C - Turbine Inspection (4/28/2025) Sta 321: Unit 5B - Emergent Repair (2/20/2025 - TBD)

Sta 321: Units 5B, 6B & 7B - Turbine Inspection (4/30/2025)

MLV 324

(segment 324 FH)

1,767

1,767

Station 405 HC Line (segment 299

FH)

803

803

Station 224

(segment 224 FH)

389

389

220

(169)

389

Sta 229: Annual ESD Test & Maintenance (5/14/2025 - 5/15/2025)

This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses. Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

June 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(6/2 - 6/8)

Week 2

(6/9 - 6/15)

Week 3

(6/16 - 6/22)

Week 4

(6/23 - 6/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490

FH)

564

564

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 FH)

980

780

(200)

650

(330)

650

(330)

950

(30)

MLV 1-1BL to MLV 3-1: Anomaly Remediation (4/18/2025 - 6/3/2025)

MLV 13-3 to MLV 17-3: Pig Run - Cleaning 6/10/25 (M) (6/10/2025) MLV 13-3 to MLV 17-3: Pig Run - EMAT 6/20/25 (M) (6/20/2025) MLV 13-3 to MLV 17-3: Pig Run - Gauge 6/12/25 (M) (6/12/2025) MLV 13-3 to MLV 17-3: Pig Run - MFL-A 6/16/25 (M) (6/16/2025) MLV 13-3 to MLV 17-3: Pig Run - MFL-C 6/18/25 (M) (6/18/2025)

MLV 4-1 to MLV 5-1: Anomaly Remediation (5/20/2025 - 6/17/2025)

MLV 8-1 to MLV9-1: Anomaly Remediation (6/3/2025 - 7/2/2025)

Station 17

(segment 117 FH)

758

753

(5)

753

(5)

603

(155)

603

(155)

MLV 17-1D to MLV 20-1A: Anomaly Remediation (6/16/2025 - 7/4/2025)

MLV 17-3 to MLV 18-3: Emergent Repair (1/22/2025 - TBD)

20-1A to MLV 24-1A: Anomaly Remediation (5/26/2025 - 6/13/2025)

Station 25

(segment 125 FH)

714

664

(50)

709

(5)

714

MLV 25-1 to MLV 26-1 Relocation: Highway 105 Widening (5/19/2025 -

6/6/2025)

MLV 25-2 to MLV 26-2: Anomaly Remediation (6/1/2025 - 6/15/2025)

Station 40 South

(segment 132 FH)

912

717

(195)

717

(195)

747

(165)

747

(165)

MLV 32-2 to MLV 33-2: Anomaly Remediation (5/26/2025 - 6/13/2025)

MLV 36-1 to MLV 36-1A: Anomaly Remediation (6/1/2025 - 6/30/2025) MLV 39-1 to MLV 40-1S: Anomaly Remediation (6/1/2025 - 6/21/2025) MLV 39-2 to MLV 40-2S: Anomaly Remediation (6/22/2025 - 7/15/2025)

Station 47

(segment 143 FH)

1,176

776

(400)

786

(390)

1171

(5)

1171

(5)

MLV 40-1D to MLV 47-1S: Pig Runs - Cleaning / Gauge 6/4 (M) (6/4/2025)

MLV 40-1D to MLV 47-1S: Pig Runs - Cleaning 6/4 - 6/5 (M) (6/4/2025 - 6/5/2025)

MLV 40-1D to MLV 47-1S: Pig Runs - TDW MDS 6/10 (M) (6/10/2025)

MLV 40-4D to MLV 47-4S: Pig Runs - Maintenance (M) (6/10/2025) MLV 47-1A to MLV 48-1: Class Change (6/2/2025 - 11/30/2025)

MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025) MLV 47-3D TO MLV 53-3CR: Pig Runs - TDW MDS 6/3 (M) (6/3/2025)

MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) Sta 47: Scrubber Filter Separator Cleaning & Inspection (6/2/2025 - 6/6/2025)

Sta 63: Unit 1D - Overhaul & Geislinger Coupling Inspection (4/7/2025 - 6/6/2025)

Station 63

(segment 163 FH)

1,233

1,233

945

(288)

1155

(78)

MLV 63-2D to MLV 69-2: Pig Runs - Cleaning / Gauge 6/17/25 (6/17/2025)

MLV 63-2D to MLV 69-2: Pig Runs - MDS 6/19/25 (6/19/2025) MLV 71-2D to MLV 79-2S: Pig Runs - EMAT 6/24/25 (6/24/2025)

Station 823

(segment 823 BH)

686

686

Station 834

(segment 834 BH)

679

670

(9)

670

(9)

670

(9)

670

(9)

Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)

Station 847

(segment 847 BH)

284

284

220

(64)

220

(64)

MLV 838-1 TO MLV 834-1: Pig Runs - Cleaning / Gauge 6/16 - 6/18 (M)

(6/16/2025 - 6/18/2025)

MLV 838-1 TO MLV 834-1: Pig Runs - ROSEN AFD (MFL-C) 6/24 (M) (6/24/2025)

MLV 838-1 TO MLV 834-1: Pig Runs - ROSEN CAL / IMU 6/19 (M) (6/19/2025) MLV 838-1 TO MLV 834-1: Pig Runs - ROSEN EMAT 6/26 (M) (6/26/2025)

MLV 548

(segment 542 BH)

1,597

1587

(10)

1587

(10)

1587

(10)

1,597

Sta 542: Unit 3A - Overhaul (2/12/2024 - 6/20/2025)

Station 860

(segment 548 BH)

1,516

1450

(66)

503

(1013)

503

(1013)

503

(1013)

MLV 556-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025)

MLV 557-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) MLV 558-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) Sta 550: Unit 3A - Turbocharger Exchange & Engine Overhaul (6/9/2025 - 7/18/2025)

Sta 550: Unit 4A - Turbocharger Exchange (5/26/2025 - 6/5/2025)

Sta 555: Unit 4A - Engine Maintenance (6/2/2025 - 6/6/2025)

TGP - Outage Impact Report June 2025 (updated 04/17/25)

-Primary impact restrictions may be necessary

-Major impact restrictions may be necessary

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(6/2 - 6/8)

Week 2

(6/9 - 6/15)

Week 3

(6/16 - 6/22)

Week 4

(6/23 - 6/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 860 North (Segment 860 BH)

1,793

1,793

780

(1013)

780

(1013)

780

(1013)

MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/2/2025 -

7/13/2025)

MLV 560-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) MLV 561-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) MLV 562-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) MLV 563-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) MLV 564-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025) Sta 563 Joelton: Annual ESD Test (6/16/2025)

Sta 563 Joelton: Fuel Gas Filter Changeout & Gas Filtration - Unit 1 & 2 (6/16/2025 - 6/20/2025)

Sta 563 Joelton: Scrubber/Filter Separator cleaning & Inspection - Units 1A & 2A (6/16/2025 - 6/20/2025)

Sta 563 Joelton: Unit 2A - 4K/8K Inspection (6/16/2025) Sta 563: 2nd Quarterly Safety Checks (6/16/2025 - 6/20/2025)

Sta 860: Force Majeure (8/18/2023 - TBD)

Sta 860: Unit 1A - After Cooler/jacket Water leaking into crankcase (6/17/2024 - 6/28/2025)

Sta 860: Unit 1B - Replace Lubrication System & Eletctronic Bearing System

(6/23/2025 - 7/3/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2235

(410)

1855

(790)

2150

(495)

2150

(495)

MLV 106-1D to MLV 111-7BR: Make Piggable Valve MLV 107-7 & MLV 109-7

Replacements (M) (6/7/2025 - 7/18/2025)

MLV 106-3C to MLV 107-3: Anomaly Remediation (6/16/2025 - 7/11/2025) Sta 106 Clay City: Annual ESD Test & Maintenance (6/2/2025 - 6/6/2025) Sta 106 Clay City: Upgrade B Building Jacket Water System (6/2/2025 - 6/6/2025)

Sta 87: Unit 3D - Turbocharger Exchange (4/28/2025 - 6/13/2025) Sta 871 Campbellsville: Annual ESD Test (6/24/2025 - 6/25/2025) Sta 871: Scrubber/Filter/Separator Inspection & Cleaning (6/23/2025 - 6/27/2025)

Sta 875 Richmond: Annual ESD Test & Maintenance (6/10/2025 - 6/12/2025)

Station 114

(segment 114 BH)

920

720

(200)

370

(550)

370

(550)

670

(250)

MLV 115-3 to MLV 116-3: Anomaly Remediation (M) (6/9/2025 - 6/23/2025)

MLV 116-3 to MLV 117-3: Anomaly Remediation (5/9/2025 - 6/16/2025) MLV 117-3 to MLV 118-3: Anomaly Remediation (6/24/2025 - 7/1/2025)

MLV 119-2BL to MLV 119-2A: Anomaly Remediation (M) (6/24/2025 - 7/1/2025) MLV 120-2 to MLV 121-2: Anomaly Remediation (6/24/2025 - 7/15/2025)

Sta 118A Tyler Mountain: Unit 1A - 4k Hr Inspection (6/9/2025 - 6/11/2025) Sta 114: Unit 1D - Emergent Repair (4/15/2025 - TBD)

Station 204

(Segment 204 BH)

1,827

1757

(70)

1557

(270)

1757

(70)

1757

(70)

MLV 209-3 to MLV 210-3A: Class Change Replacement (5/27/2025 - 6/30/2025)

Sta 214: Annual ESD Test & Maintenance (6/9/2025 - 6/13/2025)

Station 237

(segment 237 FH)

1,017

1,017

930

(87)

Sta 237: Unit 3A - Unit 3A Device Tests (6/26/2025)

Station 245

(segment 245 FH)

997

975

(22)

975

(22)

785

(212)

997

Sta 241: Annual ESD Test (6/17/2025)

Sta 241: Point to Point and Trans Cals (6/18/2025)

Sta 241: Unit 1A - Main Bearing, Turbo, Compressor Boring & Valve Operator (5/19/2025 - 6/21/2025)

Station 254

(segment 256 FH)

1,213

1050

(163)

890

(323)

1100

(113)

1100

(113)

MLV 255-1 to MLV 256-1: Anomaly Remediation (6/9/2025 - 6/14/2025)

MLV 258-1 to MLV 259-1: Anomaly Remediation (6/9/2025 - 7/19/2025) MLV 259-1 to MLV 260-1: Anomaly Remediation (6/2/2025 - 6/14/2025)

Station 261 Discharge East (segment 261

FH)

941

941

930

(11)

941

Sta 261: Unit 4A - Compressor Rod Packing (M) (6/10/2025 - 6/12/2025)

Station 266A (segment 282

FH)

371

(371)

371

MLV 266A-102A to 266A-104A: Make Piggable - Tee Replacement (M) (6/2/2025

- 6/11/2025)

Tewksbury Incremental Lateral (segment 285

FH)

(17)

MLV 270B-101.1 TO MLV 270B-103: Pig Runs - Cleaning / Gauge 6/3/25 (M)

(6/3/2025)

MLV 270B-101.1 TO MLV 270B-103: Pig Runs - MFL-C / Cal / IMU Combo 6/4/25 (M) (6/4/2025)

Station 307

(segment 307 BH)

1,148

1130

(18)

1,148

925

(223)

1,148

Sta 219: Unit 10A - Unit Valve Replacement (5/5/2025 - 6/6/2025)

Sta 219: Unit 11A - Unit Valve Replacement (5/5/2025 - 6/6/2025) Sta 310: Unit 1A - Water Wash & Borescope (6/17/2025 - 6/18/2025)

Station 315

(segment 315 BH)

1,854

1,854

Station 317

(segment 317 BH)

1,579

1,579

1445

(134)

1,579

Sta 315: Unit 1B - Water Wash & Borescope (6/9/2025 - 6/10/2025)

Sta 315: Unit 2A - Water Wash & Borescope (6/11/2025 - 6/12/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

June 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(6/2 - 6/8)

Week 2

(6/9 - 6/15)

Week 3

(6/16 - 6/22)

Week 4

(6/23 - 6/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 321

(segment 321 FH)

2,102

2052

(50)

1630

(472)

2052

(50)

2052

(50)

Sta 321: Station Valves for ESD System (6/12/2025)

Sta 321: Unit 5B - Emergent Repair (2/20/2025 - TBD)

MLV 324

(segment 324 FH)

1,767

1,767

Station 261

South 300 Line

(segment 355 BH)

(47)

MLV 346-1: MLV Replacement (M) (6/23/2025 - 7/1/2025)

Station 405 HC Line (segment 299

FH)

803

803

Station 224

(segment 224 FH)

389

389

290

(99)

389

Sta 224: Annual ESD Test (6/10/2025 - 6/11/2025)

This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses.

Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

July 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(6/30 - 7/6)

Week 2

(7/7 - 7/13)

Week 3

(7/14 - 7/20)

Week 4

(7/21 - 7/27)

Week 5

(7/28 - 8/3)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490

FH)

564

564

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 FH)

980

950

(30)

980

660

(320)

660

(320)

MLV 4-3 to MLV 9-3: Anomaly Remediation (7/21/2025 - 8/8/2025)

MLV 8-1 to MLV9-1: Anomaly Remediation (6/3/2025 - 7/2/2025)

Station 17

(segment 117 FH)

758

603

(155)

348

(410)

753

(5)

753

(5)

753

(5)

MLV 17-1D to MLV 20-1A: Anomaly Remediation (6/16/2025 - 7/4/2025)

MLV 17-2D to MLV 20-2A: Anomaly Remediation (7/7/2025 - 7/11/2025) MLV 17-3 to MLV 18-3: Emergent Repair (1/22/2025 - TBD)

Station 25

(segment 125 FH)

714

714

Station 40 South

(segment 132 FH)

912

747

(165)

777

(135)

587

(325)

587

(325)

587

(325)

MLV 36-1 to MLV 36-1A: Anomaly Remediation (6/1/2025 - 6/30/2025)

MLV 39-2 to MLV 40-2S: Anomaly Remediation (6/22/2025 - 7/15/2025) MLV 39-3 to MLV 40-3S: Anomaly Remediation (7/16/2025 - 8/15/2025)

Carthage Lateral (segment 700

FH)

323

323

175

(148)

323

Sta 40: Carthage Check Meter (M) (7/21/2025 - 7/24/2025)

Station 47

(segment 143 FH)

1,176

1171

(5)

1171

(5)

1036

(140)

1036

(140)

1171

(5)

MLV 41-2 to MLV 42-2: Anomaly Remediation (8/1/2025 - 9/1/2025)

MLV 47-1A to MLV 48-1: Class Change (6/2/2025 - 11/30/2025) MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025)

MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 54-4D TO MLV 63-4S: Pig Runs - AFD 7/22/25 (7/22/2025) MLV 54-4D TO MLV 63-4S: Pig Runs - Caliper 7/17/25 (7/17/2025)

MLV 54-4D TO MLV 63-4S: Pig Runs - Cleaning / Gauge 7/15/25 (7/15/2025) MLV 54-4D TO MLV 63-4S: Pig Runs - EMAT 7/24/25 (7/24/2025)

Station 63

(segment 163 FH)

1,233

1,233

1170

(63)

1,233

1085

(148)

MLV 71-1D to MLV 77-1A: Pig Runs - Cleaning / Gauge 7/15/25 (7/15/2025)

MLV 71-1D to MLV 77-1A: Pig Runs - MDS 7/17/25 (7/17/2025)

MLV 82-2C to MLV 87-2S: Pig Runs - Cleaning / Gauge 7/29/25 (7/29/2025) MLV 82-2C to MLV 87-2S: Pig Runs - MDS 7/31/25 (7/31/2025)

Station 823

(segment 823 BH)

686

686

Station 834

(segment 834 BH)

679

670

(9)

670

(9)

670

(9)

670

(9)

670

(9)

Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)

MLV 548

(segment 542 BH)

1,597

1,597

Station 860

(segment 548 BH)

1,516

503

(1013)

1511

(5)

1511

(5)

1,516

MLV 556-2: Make Piggable - Valve Replacement (6/9/2025 - 6/30/2025)

Station 860 North (Segment 860 BH)

1,793

780

(1013)

1693

(100)

1693

(100)

1693

(100)

1693

(100)

MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/2/2025 -

7/13/2025)

Sta 860: Unit 1B - Replace Lubrication System & Eletctronic Bearing System

(6/23/2025 - 7/3/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2150

(495)

2150

(495)

2150

(495)

2370

(275)

2275

(370)

MLV 101-5 to MLV 102-5: Class Change Pipe Replacement (7/14/2025 -

8/16/2025)

MLV 106-1D to MLV 111-7BR: Make Piggable Valve MLV 107-7 & MLV 109-7 Replacements (M) (6/7/2025 - 7/18/2025)

MLV 106-3C to MLV 107-3: Anomaly Remediation (6/16/2025 - 7/11/2025) MLV 107-3 to MLV 108-3: Anomaly Remediation (7/14/2025 - 7/27/2025) MLV 108-3 to MLV 109-3: Anomaly Remediation (7/28/2025 - 8/10/2025) MLV 109-5 to MLV 109-5A: Class Change Pipe Replacement (7/14/2025 - 7/31/2025)

MLV 871-2 to MLV 871-2A: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 872-1 to MLV 873-1: Anomaly Remediation (7/14/2025 - 7/25/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 875-1 to MLV 876-1R: Anomaly Remediation (7/14/2025 - 7/25/2025) MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (7/21/2025 - 9/5/2025)

MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/21/2025 -

9/5/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

July 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(6/30 - 7/6)

Week 2

(7/7 - 7/13)

Week 3

(7/14 - 7/20)

Week 4

(7/21 - 7/27)

Week 5

(7/28 - 8/3)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 114

(segment 114 BH)

920

670

(250)

670

(250)

670

(250)

800

(120)

800

(120)

MLV 117-3 to MLV 118-3: Anomaly Remediation (6/24/2025 - 7/1/2025)

MLV 119-2BL to MLV 119-2A: Anomaly Remediation (M) (6/24/2025 - 7/1/2025) MLV 120-2 to MLV 121-2: Anomaly Remediation (6/24/2025 - 7/15/2025)

Sta 114 Catlettsburg: Annual ESD Test & Substation Inspection (7/7/2025 - 7/11/2025)

Sta 114: Unit 1D - Emergent Repair (4/15/2025 - TBD)

Station 204

(Segment 204 BH)

1,827

1757

(70)

1822

(5)

1766

(61)

1766

(61)

1654

(173)

MLV 204-2 to MLV 200-2: Pig Runs - Cleaning / Gauge 7/29/25 (M) (7/29/2025)

MLV 204-2 to MLV 200-2: Pig Runs - MFL-A Combo 7/31/25 (M) (7/31/2025)

MLV 205-2 to MLV 206-2: Special Permit Replacement (7/23/2025 - 9/1/2025) MLV 209-2 to MLV 204-2: Pig Runs - Cleaning Gauge 7/15/25 (7/15/2025) MLV 209-2 to MLV 204-2: Pig Runs - EMAT 7/22/25 (7/22/2025)

MLV 209-2 to MLV 204-2: Pig Runs - MFL-A Combo 7/17/25 (7/17/2025)

MLV 209-3 to MLV 210-3A: Class Change Replacement (5/27/2025 - 6/30/2025)

MLV 216-2 to MLV 216-2A: Class Change Replacement (7/1/2025 - 9/1/2025) Sta 200 Greenup: Annual ESD Test (7/14/2025 - 7/18/2025)

Station 219 to

Station 224

(Segment 219 FH)

540

540

445

(95)

540

Sta 219: Unit 1A to 6A - Protective Device Checks (7/14/2025 - 7/18/2025)

Station 230C (segment 296

FH)

743

743

570

(173)

743

Station 230C: Annual ESD (M) (7/16/2025 - 7/17/2025)

Station 245

(segment 245 FH)

997

997

935

(62)

997

Sta 241: Unit 3A - Device and Relief Valve Tests (7/15/2025 - 7/16/2025)

Station 254

(segment 256 FH)

1,213

1100

(113)

1100

(113)

1100

(113)

1,213

MLV 258-1 to MLV 259-1: Anomaly Remediation (6/9/2025 - 7/19/2025)

Station 261 Discharge East (segment 261

FH)

941

941

Station 266A (segment 282 FH)

371

371

345

(26)

371

MLV 266A-102A TO MLV 266A-104A: Pig Runs - Cleaning / Gauge 7/22/25 (M)

(7/22/2025)

MLV 266A-102A TO MLV 266A-104A: Pig Runs - MFL-A / Cal / IMU Combo 7/23/25 (M) (7/23/2025)

Fitchburg Lat to Gloucester (segment 268

FH)

202

202

185

(17)

185

(17)

202

MLV 267-1R to MLV 268-1: Anomaly Remediation (7/14/2025 - 7/19/2025)

MLV 270C-101.1 to MLV 270C-101BL: Anomaly Remediation (M) (7/18/2025 - 7/23/2025)

Station 307

(segment 307 BH)

1,148

1,148

1133

(15)

1105

(43)

1105

(43)

Sta 219: Unit 7A to 13A - Protective Device Checks (7/14/2025 - 7/18/2025)

Sta 307: Unit 1A - Protective Device Checks (7/21/2025 - 7/22/2025) Sta 307: Unit 2A - Protective Device Checks (7/23/2025 - 7/25/2025) Sta 307: Unit 3A - Protective Device Checks (7/28/2025 - 7/29/2025) Sta 307: Unit 4A - Protective Device Checks (7/30/2025 - 8/1/2025)

Station 315

(segment 315 BH)

1,854

1,854

Station 321

(segment 321 FH)

2,102

2052

(50)

2052

(50)

2052

(50)

2052

(50)

2052

(50)

Sta 321: Unit 5B - Emergent Repair (2/20/2025 - TBD)

MLV 324

(segment 324 FH)

1,767

1,767

1200

(567)

MLV 327-2B to MLV 328-2: Anomaly Remediation (7/28/2025 - 8/2/2025)

MLV 336 East

(segment 336 FH)

153

153

(153)

153

MLV 339-1: ECDA (7/7/2025 - 7/20/2025)

Station 261

South 300 Line

(segment 355 BH)

(47)

MLV 346-1: MLV Replacement (M) (6/23/2025 - 7/1/2025)

Station 405 HC Line (segment 299

FH)

803

803

690

(113)

803

Sta 405A: Annual ESD Test (7/8/2025)

Sta 405A: Filter / Scrubber Change (7/9/2025) Sta 405A: Point to Point and Trans Cals (7/9/2025) Sta 405A: Unit Protective Device Tests (7/9/2025)

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

August 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(8/4 - 8/10)

Week 2

(8/11 - 8/17)

Week 3

(8/18 - 8/24)

Week 4

(8/25 - 8/31)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490

FH)

564

564

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 FH)

980

660

(320)

980

MLV 4-3 to MLV 9-3: Anomaly Remediation (7/21/2025 - 8/8/2025)

Station 17

(segment 117 FH)

758

753

(5)

753

(5)

753

(5)

753

(5)

MLV 4-3 to MLV 9-3: Anomaly Remediation (7/21/2025 - TBD)

Station 25

(segment 125 FH)

714

714

Station 40 South

(segment 132 FH)

912

587

(325)

587

(325)

912

MLV 39-3 to MLV 40-3S: Anomaly Remediation (7/16/2025 - 8/15/2025)

Station 40 KN South (segment 501

FH)

268

200

(68)

268

200

(68)

200

(68)

Sta 40: HP Replacement - 500C1 Mod (8/4/2025 - 8/9/2025)

Sta 40: HP Replacement - 500C1 Mod & 1C KN Line (8/22/2025 - 8/30/2025)

Station 40 North

(segment 140 FH)

1,176

1,176

951

(225)

951

(225)

1006

(170)

Sta 40: HP Replacement - 500C1 Mod & 1C (8/22/2025 - 8/30/2025)

Sta 40: HP Replacement - Bldg C Mod (8/13/2025 - 8/18/2025)

Station 47

(segment 143 FH)

1,177

887

(290)

1172

(5)

1172

(5)

1172

(5)

MLV 41-2 to MLV 42-2: Anomaly Remediation (8/1/2025 - 9/1/2025)

MLV 47-1A to MLV 48-1: Class Change (6/2/2025 - 11/30/2025) MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025)

MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) Sta 54: Substation Inspection & Replace Insulator Bushing on Transformer

(8/4/2025 - 8/8/2025)

Station 63

(segment 163 FH)

1,233

1,233

660

(573)

Sta 63 Batesville: Annual ESD Test (8/27/2025)

Station 823

(segment 823 BH)

686

686

Station 834

(segment 834 BH)

679

670

(9)

670

(9)

670

(9)

670

(9)

Sta 834: Unit 6A - Overhaul (3/3/2025 - 11/3/2025)

Station 847

(segment 847 BH)

284

284

220

(64)

Sta 847 Coffeeville: Annual ESD Test (8/27/2025 - 8/28/2025)

MLV 548

(segment 542 BH)

1,597

1,597

1370

(227)

1370

(227)

MLV 540-1 to MLV 541-1: Anomaly Remediation (8/19/2025 - 9/7/2025)

Station 860

(segment 548 BH)

1,516

1,516

Station 860 North (Segment 860

BH)

1,793

1693

(100)

1693

(100)

1693

(100)

1693

(100)

MLV 861-1 to MLV 862-1: Install New 30" Valve 861-1A (8/18/2025 - 8/30/2025)

Sta 860: Force Majeure (8/18/2023 - TBD)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2275

(370)

2275

(370)

2375

(270)

2460

(185)

MLV 101-5 to MLV 102-5: Class Change Pipe Replacement (7/14/2025 -

8/16/2025)

MLV 108-3 to MLV 109-3: Anomaly Remediation (7/28/2025 - 8/10/2025) MLV 109-3 to MLV 109-3A: Anomaly Remediation (8/11/2025 - 8/24/2025) MLV 871-2 to MLV 871-2A: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (7/28/2025 - 9/29/2025) MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (7/21/2025 - 9/5/2025)

MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/21/2025 -

9/5/2025)

Station 114

(segment 114 BH)

920

800

(120)

800

(120)

800

(120)

800

(120)

Sta 114: Unit 1D - Emergent Repair (4/15/2025 - TBD)

Station 200

(segment 200 BH)

1,765

1760

(5)

1760

(5)

1760

(5)

1760

(5)

MLV 110-3 to MLV 111-3A: Anomaly Remediation (8/25/2025 - 8/31/2025)

MLV 111-3B to MLV 112-3: Make Piggable (8/4/2025 - 8/25/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

August 2025 (updated 04/17/25)

-Minor impact restrictions may be necessary depending on flow conditions

-Little to no impact, though minor outages may cause incremental reductions

Station # / Lateral

Est Nominal Operating Capacity (Thousand Dth)

Week 1

(8/4 - 8/10)

Week 2

(8/11 - 8/17)

Week 3

(8/18 - 8/24)

Week 4

(8/25 - 8/31)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 204

(Segment 204 BH)

1,827

1654

(173)

1654

(173)

1501

(326)

1501

(326)

MLV 204-2 to MLV 200-2: Pig Runs - EMAT 8/12/25 (M) (8/12/2025)

MLV 204-2 to MLV 200-2: Pig Runs - MFL-C 8/7/25 (M) (8/7/2025)

MLV 204-2 to MLV 200-2: Pig Runs - Residual 8/5/25 (M) (8/5/2025) MLV 205-2 to MLV 206-2: Special Permit Replacement (7/23/2025 - 9/1/2025) MLV 216-2 to MLV 216-2A: Class Change Replacement (7/1/2025 - 9/1/2025) MLV 219-4 to MLV 214-4: Pig Runs - Cleaning / Gauge 8/19/25 (8/19/2025)

MLV 219-4 to MLV 214-4: Pig Runs - EMAT 8/26/25 (8/26/2025) MLV 219-4 to MLV 214-4: Pig Runs - MFL-A Combo 8/21/25 (8/21/2025)

Station 237

(segment 237 FH)

1,017

925

(92)

(1017)

MLV 236-1 to MLV 237-1BR: Special Permit Replacement (M) (8/11/2025 -

9/12/2025)

Station 237: Annual ESD Test (8/5/2025) Station 237: Point to Point and Trans Cals (8/6/2025)

Station 245

(segment 245 FH)

997

997

925

(72)

997

Sta 241: Unit 1A - Device and Relief Valve Tests (8/11/2025)

Sta 241: Unit 1B - Device and Relief Valve Tests (8/13/2025) Sta 241: Unit 2A - Device and Relief Valve Tests (8/12/2025) Sta 241: Unit 2B - Device and Relief Valve Tests (8/14/2025)

Station 261 Discharge East (segment 261

FH)

941

941

Station 307

(segment 307 BH)

1,148

745

(403)

1,148

930

(218)

1,148

Sta 219: Annual ESD Test (8/4/2025 - 8/7/2025)

Sta 219: Unit 1B - Protective Device Checks (8/4/2025 - 8/7/2025) Sta 307 (Pigeon ): Annual ESD Test (8/4/2025 - 8/8/2025)

Sta 307: Unit 5A - Protective Device Checks (8/4/2025 - 8/5/2025) Sta 307: Unit 6A - Protective Device Checks (8/6/2025 - 8/8/2025)

Sta 313 Coudersport: Annual ESD Test (8/19/2025 - 8/21/2025)

Station 315

(segment 315 BH)

1,854

1,854

Station 321

(segment 321 FH)

2,102

2052

(50)

1965

(137)

1965

(137)

2052

(50)

MLV 324-1B to MLV 325-1: Anomaly Remediation (M) (8/11/2025 - 8/21/2025)

Sta 321: Unit 5B - Emergent Repair (2/20/2025 - TBD)

MLV 324

(segment 324 FH)

1,767

1,767

Station 405 HC Line (segment 299

FH)

803

803

This document is updated on a weekly basis and outage schedules/impacts are subject to change as the week progresses.

Dates posted on DART should be deemed correct in the event of conflicts between DART posted dates and dates on this report.

The impacts sheet are based on steady-state hydraulic models assuming recent operating flows, conditions, and various unit outages.