TGP Outage Impact Report

Tennessee Gas Pipeline 2mo ago

All information here is provided as a service and information is not guaranteed to be accurate. PipeRiv is not responsible for any incorrect information.

TSP/TSP Name: 1939164-TENNESSEE GAS PIPELINE	Critical: Y
Notice Type Desc (1): MAINTENANCE	Notice Type Desc (2): MAINTENANCE
Notice Eff Date/Time: 07/24/2025 3:20:46PM	Notice End Date/Time: 07/25/2025 9:00:00am
Post Date/Time: 7/24/2025 3:20:46 PM	Notice ID: 395321
Reqrd Rsp: 1	Rsp Date: 07/24/2025
Notice Stat Desc: INITIATE	Prior Notice:
Subject: TGP Outage Impact Report

Notice Text:

TGP - Outage Impact Report Seven Day Forecast (updated 07/24/25)

-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 / Seg

Est Nominal

Operating Capacity (Thousand Dth)

Monday

(7/28)

Tuesday

(7/29)

Wednesday

(7/30)

Thursday

(7/31)

Friday

(8/1)

Saturday

(8/2)

Sunday

(8/3)

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

386

(70)

386

(70)

386

(70)

386

(70)

386

(70)

386

(70)

386

(70)

MLV 405-1 to MLV 406-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 406-1 to MLV 407-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 407-1 TO MLV 408-1: Immediate Anomaly Remediation (7/28/2025 -

9/19/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 BH)

1,028

1,028

Station 17

(segment 117 FH)

758

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

753

(5)

MLV 20-1 to MLV 20-1BR: Class Change Pipe Replacement (7/23/2025 - 8/7/2025)

Station 25

(segment 125 FH)

714

464

(250)

464

(250)

464

(250)

414

(300)

464

(250)

464

(250)

464

(250)

MLV 25-3 to MLV 32-3: Pig Run - Maintenance (7/31/2025) Sta 25: Unit 1C - Force Majeure (7/16/2025 - TBD)

Station 40 South

(segment 132 FH)

912

892

(20)

892

(20)

892

(20)

892

(20)

892

(20)

892

(20)

892

(20)

MLV 32-1L to MLV 33-1: PHMSA Immediate Anomaly Remediation (6/23/2025 - 8/15/2025)

Sta 32: Unit 3B - Compressor Overhaul (4/14/2025 - 8/22/2025)

Station 40 KN South (segment 501 FH)

268

268

150

(118)

268

Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (7/30/2025)

Station 40 North

(segment 140 FH)

1,175

975

(200)

975

(200)

975

(200)

975

(200)

975

(200)

975

(200)

975

(200)

Sta 40: Unit 2C - Emergent Repair (7/23/2025 - TBD)

Station 47

(segment 143 FH)

1,176

1171

(5)

1031

(145)

1041

(135)

1031

(145)

1121

(55)

1121

(55)

1121

(55)

MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025) MLV 47-2A to MLV 48-2: Anomaly Remediation (M) (7/21/2025 - 7/30/2025) MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025) MLV 53-2 TO MLV 53-2CBR: Anomaly Remediation (7/30/2025 - 8/8/2025) MLV 54-4D TO MLV 63-4S: Pig Runs - EMAT 7/31/25 (7/31/2025)

MLV 54-4D TO MLV 63-4S: Pig Runs - MFL-C 7/29/25 (7/29/2025)

Station 63

(segment 163 FH)

1,233

1,233

1085

(148)

1,233

1085

(148)

1,233

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)

670

(9)

670

(9)

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

Station 534 South of Pool (segment 530 BH)

1,820

1798

(22)

1798

(22)

1798

(22)

1798

(22)

1798

(22)

1798

(22)

1798

(22)

Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2025) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2025)

MLV 548

(segment 542 BH)

1,597

1375

(222)

1375

(222)

1375

(222)

1375

(222)

1375

(222)

1375

(222)

1375

(222)

Sta 534: Unit 6A - Piston Liner & Unloader Replacements (3/25/2025 - 8/29/2025)

Sta 534: Unit 7A - Startup Sequence (5/20/2025 - 8/15/2025)

Sta 542: Unit 3A - Overhaul (2/12/2024 - 8/1/2025)

Station 860

(segment 548 BH)

1,516

1500

(16)

1500

(16)

1500

(16)

1500

(16)

1500

(16)

1500

(16)

1500

(16)

Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 8/15/2025)

Sta 550: Unit 4A - Turbocharger Exchange (6/2/2025 - 8/30/2025)

Station 860 North (Segment 860 BH)

1,793

1705

(88)

1705

(88)

1705

(88)

1705

(88)

1705

(88)

1705

(88)

1705

(88)

MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/9/2025 - 9/16/2025)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 -

12/31/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2125

(520)

2125

(520)

2125

(520)

2125

(520)

2125

(520)

2125

(520)

2125

(520)

MLV 101-5 to MLV 102-5: Class Change Pipe Replacement (7/30/2025 - 8/30/2025)

MLV 107-2 to MLV 108-2: Sandblast Painting (7/25/2025 - 8/5/2025) MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/14/2025 - 9/13/2025)

MLV 96-4 to MLV 98-4: Immediate Anomaly Remediation (7/9/2025 - 9/12/2025)

Segment 187: Force Majeure Event (7/12/2025 - 8/4/2025)

Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 8/29/2025) Sta 110 Morehead: Replace Transformers (7/29/2025)

Station 114

(segment 114 BH)

920

920

Station 200

(segment 200 BH)

1,765

1760

(5)

1,765

MLV 111-3B to MLV 112-3: Make Piggable (7/8/2025 - 7/28/2025)

Station 204

(Segment 204 BH)

1,827

1511

(316)

1511

(316)

1511

(316)

1511

(316)

1521

(306)

1521

(306)

1521

(306)

MLV 205-2 to MLV 206-2: Special Permit Replacement (7/16/2025 - 9/1/2025) MLV 209-3 to MLV 210-3: Anomaly Remediation (7/18/2025 - 8/15/2025) MLV 213-3A to MLV 214-3BL: Installing Side Valves (7/16/2025 - 8/4/2025) MLVS 217A-201.3: Anomaly Remediation (7/25/2025 - 8/1/2025)

Sta 209: Unit 8A - C1 & C2 Pressure Packing (7/28/2025 - 7/31/2025) Sta 214: Station Outage - Install Side Valves (7/16/2025 - 8/11/2025)

Station 245

(segment 245 FH)

997

815

(182)

815

(182)

815

(182)

815

(182)

815

(182)

815

(182)

815

(182)

MLV 237-2 to MLV 238-2: SCCDA (7/21/2025 - 8/9/2025)

Station 254

(segment 256 FH)

1,213

920

(293)

920

(293)

920

(293)

920

(293)

920

(293)

920

(293)

920

(293)

Sta 254: Unit 4A - Replace Power Cylinder Head (5/16/2025 - 11/1/2025) Sta. 254: Bldg A Stack Replacement and Unit Upgrades (7/14/2025 -

11/1/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

Seven Day Forecast (updated 07/24/25)

-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

(7/28)

Tuesday

(7/29)

Wednesday

(7/30)

Thursday

(7/31)

Friday

(8/1)

Saturday

(8/2)

Sunday

(8/3)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 261 Discharge East (segment 261

FH)

941

941

MLV 265

(segment 265 FH)

767

390

(377)

390

(377)

390

(377)

767

MLV 264-2 to 264-2A: Pipe Replacement (7/15/2025 - 7/30/2025)

Fitchburg Lat to Gloucester (segment 268 FH)

202

185

(17)

185

(17)

185

(17)

185

(17)

185

(17)

185

(17)

185

(17)

MLV 270C-101.1 to MLV 270C-101BL: Anomaly Remediation (M) (7/14/2025 - 8/16/2025)

Station 307

(segment 307 BH)

1,148

1105

(43)

1105

(43)

1105

(43)

1105

(43)

1105

(43)

1,148

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 317

(segment 317 BH)

1,579

1544

(35)

1,579

Sta 317: Unit 1B - HMI Replacement (7/28/2025)

Station 321

(segment 321 FH)

2,102

2,102

2080

(22)

2,102

Sta 321: Unit 7B - HMI Replacement (7/29/2025)

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

August 2025 (updated 07/24/25)

-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

MLV 406

(segment 406 BH)

456

386

(70)

386

(70)

386

(70)

386

(70)

MLV 405-1 to MLV 406-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 406-1 to MLV 407-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 407-1 TO MLV 408-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 BH)

1,028

1,028

445

(583)

MLV 17-2S to MLV 9-2D: Pigging Cleaning Run 1 (M) (8/28/2025)

Station 17

(segment 117 FH)

758

753

(5)

740

(18)

740

(18)

758

MLV 17-2D to MLV 20-2A: Anomaly Remediation (8/11/2025 - 8/16/2025) MLV 20-1 to MLV 20-1BR: Class Change Pipe Replacement (7/23/2025 - 8/7/2025)

MLV 21-1 to MLV 22-1: Meter Upgrade (Meter: Tomball PIN: 420898) (M) (8/11/2025 - 8/22/2025)

Station 25

(segment 125 FH)

714

464

(250)

464

(250)

464

(250)

464

(250)

MLV 25-1 to MLV 26-1 Relocation: Highway 105 Widening (8/18/2025 - 9/6/2025)

Sta 25: Unit 1C - Force Majeure (7/16/2025 - TBD)

Station 40 South

(segment 132 FH)

912

887

(25)

887

(25)

907

(5)

912

MLV 32-1L to MLV 33-1: PHMSA Immediate Anomaly Remediation (6/23/2025 - 8/15/2025)

MLV 35-1 to MLV 36-1: PHMSA Immediate Anomaly Remediation (8/4/2025 - 8/15/2025)

Sta 32: Unit 3B - Compressor Overhaul (4/14/2025 - 8/22/2025)

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

951

(225)

951

(225)

856

(320)

856

(320)

Sta 40: HP Replacement - 500C1 Mod & 1C 100 Line (8/22/2025 - 8/30/2025) Sta 40: HP Replacement - Bldg C Mod (8/13/2025 - 8/18/2025)

Sta 40: Unit 2C - Emergent Repair (7/23/2025 - TBD)

Station 47

(segment 143 FH)

1,177

852

(325)

1172

(5)

1172

(5)

952

(225)

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 51-3 to MLV 52-3: Anomaly Remediation (8/25/2025 - 8/29/2025) MLV 52-2 to MLV 53-2: Anomaly Remediation (8/11/2025 - 8/29/2025) MLV 53-2 TO MLV 53-2CBR: Anomaly Remediation (7/30/2025 - 8/8/2025) MLV 53-3 to MLV 53-3CR: Anomaly Remediation (8/25/2025 - 8/29/2025) Sta 54: Substation Inspection (8/4/2025 - 8/8/2025)

Sta 54: Unit 6B - Powerside Overhaul (8/18/2025 - 9/5/2025)

Station 63

(segment 163 FH)

1,233

1,233

1140

(93)

1,233

663

(570)

MLV 71-1D to MLV 77-1A: Pig Re-Runs - MDS 8/13/25 (8/13/2025)

MLV 83-3B to MLV 84-3: Class Change Pipe Replacement (8/25/2025 - 9/10/2025)

Sta 63 Batesville: Annual ESD Test (8/26/2025 - 8/27/2025)

Station 823

(segment 823 BH)

686

686

515

(171)

686

Station 827 (Alexandria): Station Recycle Valve (8/19/2025 - 8/21/2025)

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

250

(34)

284

Sta 847 Coffeeville: Annual ESD Test (8/18/2025 - 8/19/2025)

Sta 847: Sub-Station Transformer Inspection and Motor Cleaning (8/18/2025 - 8/19/2025)

Station 534 South of Pool (segment 530 BH)

1,820

1798

(22)

1798

(22)

1798

(22)

1798

(22)

Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2025) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2025)

MLV 548

(segment 542 BH)

1,597

1315

(282)

1370

(227)

1125

(472)

1405

(192)

MLV 539-1 to MLV 540-1: Shallow Pipe Lowering (8/18/2025 - 8/30/2025) Sta 534: Scrubber Inspection / Filter Replacement (8/4/2025 - 8/8/2025) Sta 534: Unit 6A - Piston Liner & Unloader Replacements (3/25/2025 - 8/29/2025)

Sta 534: Unit 7A - Startup Sequence (5/20/2025 - 8/15/2025) Sta 538 Heidelberg: Station ESD Test (8/21/2025)

Sta 546: Annual ESD Tests, Scrubber filter Inspections, Changing Unit Valves (8/4/2025 - 8/10/2025)

Sta 546: Unit 1A - Engine and Compressor Overhaul (8/11/2025 - 9/15/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

August 2025 (updated 07/24/25)

-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 860

(segment 548 BH)

1,516

1500

(16)

1500

(16)

920

(596)

1440

(76)

MLV 550-2 TO MLV 546-2: Pig Runs - Cleaning 8/19/25 (8/19/2025)

MLV 550-2 TO MLV 546-2: Pig Runs - EMAT 8/21/25 (8/21/2025)

Sta 546: Unit 7A - Metal in Oil (7/14/2025 - 8/15/2025)

Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025) Sta 550: Unit 4A - Turbocharger Exchange (6/2/2025 - 8/30/2025)

Station 860 North (Segment 860 BH)

1,793

1705

(88)

1690

(103)

1690

(103)

1690

(103)

MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/9/2025 - 9/16/2025)

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

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025) Sta 860: Unit 1B - Electronic Bearing System (8/11/2025 - 8/20/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2125

(520)

2200

(445)

2200

(445)

2200

(445)

MLV 101-5 to MLV 102-5: Class Change Pipe Replacement (7/30/2025 - 8/30/2025)

MLV 107-2 to MLV 108-2: Sandblast Painting (7/25/2025 - 8/5/2025) MLV 109-5 to MLV 109-5A: Class Change Pipe Replacement (8/11/2025 -

9/8/2025)

MLV 871-2 to MLV 871-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 872-1 to MLV 873-1: Anomaly Remediation (8/4/2025 - 8/23/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 875-1 to MLV 876-1R: Anomaly Remediation (8/4/2025 - 8/23/2025) MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/14/2025 - 9/13/2025)

MLV 96-4 to MLV 98-4: Immediate Anomaly Remediation (7/9/2025 - 9/12/2025) Segment 187: Force Majeure Event (7/12/2025 - 8/4/2025)

Sta 106: Unit 1C - Replace Power Cylinder Bearing #7 (4/14/2025 - 8/29/2025)

Station 114

(segment 114 BH)

920

800

(120)

920

780

(140)

Sta 114: Unit 1D - Turbine Swap (8/4/2025 - 8/9/2025)

Sta 119A Tyler Mountain: Unit 1A - 4k Hr Inspection (8/25/2025 - 8/27/2025)

Station 204

(Segment 204 BH)

1,827

1300

(527)

1300

(527)

1300

(527)

1300

(527)

MLV 204-2 to MLV 200-2: Pig Runs - Cleaning / Gauge 8/11/25 (M) (8/11/2025) MLV 204-2 to MLV 200-2: Pig Runs - Hard Spot 8/14/25 (M) (8/14/2025)

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

MLV 204-2 to MLV 200-2: Pig Runs - Residual 8/14/25 (M) (8/14/2025) MLV 205-2 to MLV 206-2: Special Permit Replacement (7/16/2025 - 9/1/2025)

MLV 209-3 to MLV 210-3: Anomaly Remediation (7/18/2025 - 8/15/2025) MLV 213-3A to MLV 214-3BL: Installing Side Valves (7/16/2025 - 8/4/2025) MLV 214-1 to MLV 209-1: Pig Re-Runs - EMAT 8/26/25 (8/26/2025)

MLV 214-4BL to MLV 213-4BR: Installing Side Valves (8/4/2025 - 8/11/2025) MLV 216-2 to MLV 216-2A: Class Change Replacement (8/12/2025 - 9/9/2025) Sta 204: Unit 11A - Bearing Fuses - Suction Painting (8/11/2025 - 8/14/2025) Sta 204: Unit 12A - Bearing Fuses - Suction Painting (8/18/2025 - 8/21/2025) Sta 209: Unit 12A - Install Barring Jack (8/18/2025 - 8/21/2025)

Sta 214: Station Outage - Install Side Valves (7/16/2025 - 8/11/2025) Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance (8/5/2025 -

9/27/2025)

Station 219 to

Station 224

(Segment 219 FH)

540

445

(95)

540

Sta 219: Unit 1A to 6A - Protective Device Checks (8/4/2025 - 8/7/2025)

Station 237

(segment 237 FH)

1,017

925

(92)

1,017

Station 237: Annual ESD Test (8/5/2025 - 8/7/2025) Station 237: Point to Point and Trans Cals (8/6/2025)

Station 245

(segment 245 FH)

997

815

(182)

840

(157)

997

MLV 237-2 to MLV 238-2: SCCDA (7/21/2025 - 8/9/2025)

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)

Sta 241: Unit 3A - Device and Relief Valve Tests (8/13/2025 - 8/14/2025) Sta 249: Unit 1B - Crankcase Inspection (8/11/2025 - 8/15/2025)

Station 254

(segment 256 FH)

1,213

920

(293)

920

(293)

920

(293)

920

(293)

Sta 254: Unit 4A - Replace Power Cylinder Head (5/16/2025 - 11/1/2025) Sta. 254: Bldg A Stack Replacement and Unit Upgrades (7/14/2025 - 11/1/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

August 2025 (updated 07/24/25)

-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 261 Discharge East (segment 261

FH)

941

941

MLV 265

(segment 265 FH)

767

767

450

(317)

450

(317)

450

(317)

MLV 263-2 to 264-2: Pipe Replacement (8/12/2025 - 8/30/2025)

Fitchburg Lat to Gloucester (segment 268 FH)

202

185

(17)

185

(17)

202

MLV 270C-101.1 to MLV 270C-101BL: Anomaly Remediation (M) (7/14/2025 - 8/16/2025)

Station 307

(segment 307 BH)

1,148

810

(338)

780

(368)

565

(583)

960

(188)

Sta 219: Annual ESD Test (8/18/2025 - 8/22/2025)

Sta 219: Unit 13A - Mounting Valve Operators / Testing (8/4/2025 - 8/7/2025) Sta 219: Unit 13A - Unit Valve Replacement (8/4/2025 - 8/7/2025)

Sta 219: Unit 1B - Protective Device Checks (8/4/2025 - 8/7/2025) Sta 219: Unit 7A to 13A - Protective Device Checks (8/4/2025 - 8/7/2025)

Sta 307 (Pigeon ): Annual ESD Test (8/25/2025 - 8/29/2025)

Sta 307: Unit 5A - Protective Device Checks (8/11/2025 - 8/16/2025) Sta 307: Unit 6A - Protective Device Checks (8/11/2025 - 8/16/2025) Sta 313 Coudersport: Annual ESD Test (8/19/2025 - 8/21/2025)

Station 315

(segment 315 BH)

1,854

1,854

Station 317

(segment 317 BH)

1,579

1,579

1375

(204)

1,579

Sta 317: Annual ESD Test (8/19/2025 - 8/20/2025)

MLV 324

(segment 324 FH)

1,767

1,767

1450

(317)

1,767

MLV 327-2B to MLV 328-2: Anomaly Remediation (8/18/2025 - 8/23/2025)

Station 405 HC Line (segment 299 FH)

803

803

Station 224

(segment 224 FH)

389

389

200

(189)

200

(189)

200

(189)

Sta 229: Annual ESD Test & Maintenance (8/11/2025 - 9/3/2025)

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

September 2025 (updated 07/24/25)

-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

(9/1 - 9/7)

Week 2

(9/8 - 9/14)

Week 3

(9/15 - 9/21)

Week 4

(9/22 - 9/28)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409 (Donna Line) (segment 490 FH)

564

564

MLV 406

(segment 406 BH)

456

386

(70)

386

(70)

376

(80)

416

(40)

MLV 403-1 to MLV 404-1: Anomaly Remediation (M) (9/15/2025 - 10/3/2025) MLV 405-1 to MLV 406-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 406-1 to MLV 407-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

MLV 407-1 TO MLV 408-1: Immediate Anomaly Remediation (7/28/2025 - 9/19/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 BH)

1,028

445

(583)

445

(583)

1,028

MLV 17-2S to MLV 9-2D: Pig Runs - Cleaning / Gauge (M) (9/5/2025) MLV 17-2S to MLV 9-2D: Pig Runs - Cleaning Run 2 (M) (9/3/2025)

MLV 17-2S to MLV 9-2D: Pig Runs - MFL (M) (9/9/2025)

Station 17

(segment 117 FH)

758

758

753

(5)

758

MLV 17-1D to MLV 20-1A: Pig Run - Cleaning 9/15/25 (9/15/2025)

MLV 17-1D to MLV 20-1A: Pig Run - Gauge 9/16/25 (9/16/2025) MLV 17-1D to MLV 20-1A: Pig Run - MFL-A 9/17/25 (9/17/2025)

Station 25

(segment 125 FH)

714

464

(250)

464

(250)

464

(250)

464

(250)

MLV 25-1 to MLV 26-1 Relocation: Highway 105 Widening (8/18/2025 - 9/6/2025)

Sta 25: Unit 1C - Force Majeure (7/16/2025 - TBD)

Station 40 South

(segment 132 FH)

912

912

587

(325)

587

(325)

587

(325)

MLV 39-2 to MLV 40-2S: Anomaly Remediation (9/23/2025 - 10/6/2025) MLV 39-3 to MLV 40-3S: Anomaly Remediation (9/9/2025 - 9/22/2025)

Carthage Lateral (segment 700 FH)

323

323

215

(108)

323

MLV 706-1 to MLV 700-1: Pig Run - Maintenance (M) (9/9/2025)

Station 47

(segment 143 FH)

1,222

1097

(125)

762

(460)

1187

(35)

1187

(35)

MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) MLV 47-1AT to MLV 49-1: Anomaly Remediation (1/6/2025 - 10/31/2025) MLV 47-3AT to MLV 47-3A: Anomaly Remediation (9/1/2025 - 9/5/2025)

MLV 48-3 to MLV 49-3: Anomaly Remediation (9/1/2025 - 9/5/2025) MLV 49-1 to MLV 50-1: Anomaly Remediation (3/4/2025 - 10/31/2025)

MLV 53-2BREH to MLV 53-2BR: Special Permit Replacement (9/1/2025 - 10/15/2025)

MLV 54-1D TO MLV 63-1S: Pig Runs - Cleaning / Gauge 9/16/25 (9/16/2025) MLV 54-1D TO MLV 63-1S: Pig Runs - CLP / IMU 9/18/25 (9/18/2025)

MLV 54-1D TO MLV 63-1S: Pig Runs - MFL-C 9/23/25 (9/23/2025) MLV 54-1D TO MLV 63-1S: Pig Runs - MFL-C 9/25/25 (9/25/2025)

Sta 47: Annual ESD Test (9/10/2025)

Sta 54 Greenville: Annual ESD Test & Maintenance (9/8/2025 - 9/11/2025) Sta 54: Unit 6B - Powerside Overhaul (8/18/2025 - 9/5/2025)

Station 63

(segment 163 FH)

1,233

1145

(88)

1145

(88)

1200

(33)

1200

(33)

MLV 83-3B to MLV 84-3: Class Change Pipe Replacement (8/25/2025 - 9/10/2025)

MLV 84-1 to MLV 85-1: Class Change Pipe Replacement (9/11/2025 -

10/4/2025)

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

215

(69)

284

MLV 838-1 TO MLV 834-1: Pig Re-Runs - ROSEN EMAT 9/18 (M) (9/18/2025) MLV 838-1 TO MLV 834-1: Pig Runs - Cleaning 9/15 - 9/17 (M) (9/15/2025 - 9/17/2025)

Station 527

(segment 527 BH)

2,392

2,392

2380

(12)

MLV 530-1 TO MLV 531-1: Anomaly Remedition (9/22/2025 - 9/27/2025)

Station 534 South of Pool (segment 530 BH)

1,820

1798

(22)

1798

(22)

1798

(22)

1798

(22)

Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2025) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2025)

MLV 548

(segment 542 BH)

1,597

1560

(37)

1560

(37)

1210

(387)

1210

(387)

MLV 540-1 to MLV 540-1A: Anomaly Remediation (9/16/2025 - 9/27/2025) MLV 540-1 to MLV 540-1A: Shallow Pipe Lowering (9/16/2025 - 9/22/2025) MLV 541-1 to MLV 541-1A: Anomaly Remediation (9/16/2025 - 9/27/2025) Sta 546: Unit 1A - Engine and Compressor Overhaul (8/11/2025 - 9/15/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

September 2025 (updated 07/24/25)

-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

(9/1 - 9/7)

Week 2

(9/8 - 9/14)

Week 3

(9/15 - 9/21)

Week 4

(9/22 - 9/28)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 860

(segment 548 BH)

1,516

1390

(126)

1275

(241)

1500

(16)

1500

(16)

Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025)

Sta 555 Collinwood: Annual ESD Test & Maintenance (9/8/2025 - 9/12/2025) Sta 555: Unit 1A - Engine Maintenance (9/1/2025 - 9/5/2025)

Sta 555: Unit 1B - Vibration System Upgrade (9/8/2025 - 9/12/2025) Sta 555: Unit 2A - Engine Maintenance (9/1/2025 - 9/5/2025)

Sta 555: Unit 2A - Oil Seal (9/1/2025 - 9/5/2025)

Sta 555: Unit 5A - Engine Maintenance (9/1/2025 - 9/5/2025) Sta 555: Unit 6A - Engine Maintenance (9/1/2025 - 9/5/2025)

Station 860 North (Segment 860 BH)

1,793

1705

(88)

1705

(88)

1705

(88)

1780

(13)

MLV 560-2 to MLV 561-2: Class Change Pipe Replacement (6/9/2025 - 9/16/2025)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2005

(640)

2005

(640)

1995

(650)

2245

(400)

MLV 106-1D to MLV 111-7BR: Make Piggable Valve MLV 107-7 & MLV 109-7 Replacements (M) (9/1/2025 - 9/19/2025)

MLV 108-3 to MLV 109-3: Special Permit Pipe Replacement (9/24/2025 - 10/15/2025)

MLV 109-5 to MLV 109-5A: Class Change Pipe Replacement (8/11/2025 - 9/8/2025)

MLV 871-2 to MLV 871-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 93-3 to MLV 94-3: HDD River Crossing Replacement (7/14/2025 - 9/13/2025)

MLV 96-4 to MLV 98-4: Immediate Anomaly Remediation (7/9/2025 - 9/12/2025) MLV 96-5 to MLV 102-5: Pig Runs - Cleaning / Gauge 9/25/25 (9/25/2025) Sta 106 Clay City: Upgrade B Building Jacket Water System (9/15/2025 -

10/3/2025)

Sta 871: Unit 1A - 3Q Engine Inspection (9/9/2025) Sta 871: Unit 2A - 3Q Engine Inspection (9/10/2025)

Sta 96: Unit 2D - Compressor Valves (9/22/2025 - 9/26/2025)

Station 114

(segment 114 BH)

920

920

850

(70)

920

Sta 118A Tyler Mountain: Annual ESD Test (9/16/2025 - 9/18/2025)

Station 204

(Segment 204 BH)

1,827

1300

(527)

1300

(527)

1300

(527)

1300

(527)

MLV 205-2 to MLV 206-2: Special Permit Replacement (7/16/2025 - 9/1/2025) MLV 213-2A to MLV 214-2: Special Permit Replacement (9/1/2025 - 10/31/2025) MLV 216-2 to MLV 216-2A: Class Change Replacement (8/12/2025 - 9/9/2025) Sta 204: Scrubber Filter (9/22/2025 - 9/24/2025)

Sta 209 Cambridge: Scrubber Filter (9/25/2025 - 9/27/2025)

Sta 87 to Sta 219: Cumulative Planned/Unplanned Maintenance (8/5/2025 - 9/27/2025)

Station 237

(segment 237 FH)

1,017

557

(460)

557

(460)

557

(460)

557

(460)

MLV 236-1 to MLV 237-1BR: Special Permit Replacement (M) (9/2/2025 - 9/30/2025)

Station 245

(segment 245 FH)

997

840

(157)

855

(142)

925

(72)

925

(72)

Sta 241: Unit 3A - C3 Cooper Upgrade (9/8/2025 - 9/27/2025) Sta 245: Unit 1C - Engine Exchange (9/8/2025 - 9/12/2025)

Sta 249: Unit 2B - Replace Compressor Rod Packing (9/2/2025 - 9/4/2025)

Station 254

(segment 256 FH)

1,213

920

(293)

920

(293)

920

(293)

450

(763)

MLV 254-1 to MLV 261-1: Pig Run - Maintenance (9/23/2025) MLV 254-2 to MLV 261-2: Pig Run - Maintenance (9/24/2025) MLV 254-3 to MLV 258-3: Pig Run - Maintenance (9/25/2025)

Sta 254: Unit 4A - Replace Power Cylinder Head (5/16/2025 - 11/1/2025) Sta. 254: Bldg A Stack Replacement and Unit Upgrades (7/14/2025 - 11/1/2025)

N Hampton Lat (segment 280 FH)

(10)

Sta 260A Southwick: Annual ESD Test (9/23/2025)

Station 261 Discharge East (segment 261 FH)

941

941

400

(541)

545

(396)

Sta 261 Agawam: Annual ESD Test (M) (9/16/2025 - 9/18/2025) Sta 264 Charlton: Annual ESD Test (9/25/2025)

Station 267 South (segment 266 FH)

469

312

(157)

312

(157)

312

(157)

312

(157)

Sta. 267: Bldg A Controls Upgrade (9/2/2025 - 11/26/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

September 2025 (updated 07/24/25)

-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

(9/1 - 9/7)

Week 2

(9/8 - 9/14)

Week 3

(9/15 - 9/21)

Week 4

(9/22 - 9/28)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Fitchburg Lat to Gloucester (segment 268

FH)

202

140

(62)

202

MLV 267-1A to MLV 268-1: Anomaly Remediation (9/2/2025 - 9/7/2025)

Station 307

(segment 307 BH)

1,148

1,148

Station 313 Discharge (segment 399 FH)

806

806

408

(398)

Sta 313: Unit 1C - Capacitor Replacement (9/22/2025 - 9/26/2025)

Station 315

(segment 315 BH)

1,854

1,854

Station 317

(segment 317 BH)

1,579

1,579

1555

(24)

1550

(29)

1,579

MLV 317-1 to MLV 318-1: Hot Tap for New Meter (Meter: Port Royal PIN: 57162)

(M) (9/15/2025 - 9/16/2025)

MLV 317-2 to MLV 318-2: Hot Tap for New Meter (Meter: Port Royal PIN: 57162)

(M) (9/17/2025 - 9/18/2025)

Sta 317: Unit 1B - Engine Maintenace (9/9/2025 - 9/12/2025)

MLV 324

(segment 324 FH)

1,767

1,767

Station 405 HC Line (segment 299 FH)

803

803

Station 224

(segment 224 FH)

389

200

(189)

389

Sta 229: Annual ESD Test & Maintenance (8/11/2025 - 9/3/2025)

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

October 2025 (updated 07/24/25)

-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

(9/29 - 10/5)

Week 2

(10/6 - 10/12)

Week 3

(10/13 - 10/19)

Week 4

(10/20 - 10/26)

Week 5

(10/27 - 11/2)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 409A (Alamo) (segment 492 FH)

274

274

134

(140)

274

MLV 409A-901 to MLV 409A-902: Pig Run - Cleaning 10/14/25 (10/14/2025)

MLV 409A-901 to MLV 409A-902: Pig Run - Cleaning 10/15/25 (10/15/2025) MLV 409A-901 to MLV 409A-902: Pig Run - MFL-A 10/16/25 (10/16/2025)

Station 409 (Donna Line) (segment 490 FH)

564

564

MLV 406

(segment 406 BH)

456

416

(40)

456

211

(245)

456

MLV 400-1 to MLV 409-1: Pig Run - Maintenance Cleaning 10/14/25 (M) (10/14/2025)

MLV 400-2 to MLV 409-2: Pig Run - Maintenance Cleaning 10/16/25 (M) (10/16/2025)

MLV 403-1 to MLV 404-1: Anomaly Remediation (M) (9/15/2025 - 10/3/2025)

Station 1

(segment 101 BH)

400

400

Station 9

(segment 109 BH)

1,028

1,028

638

(390)

1,028

MLV 5-2 to MLV 1-2D: Pig Runs - Maintenance Cleaning 10/23 (M) (10/23/2025) MLV 9-1S and MLV 1-1D: Pig Run - Maintenance Cleaning 10/21 (M) (10/21/2025)

MLV 9-2 to MLV 5-2: Pig Runs - Maintenance Cleaning 10/23 (M) (10/23/2025) MLV 9-3 to MLV 4-3: Pig Runs - Maintenance Cleaning 10/22 (M) (10/22/2025)

Station 17

(segment 117 FH)

758

758

753

(5)

753

(5)

753

(5)

MLV 17-1D to MLV 20-1A: Anomaly Remediation (10/13/2025 - 10/31/2025)

Station 25

(segment 125 FH)

714

464

(250)

464

(250)

464

(250)

464

(250)

464

(250)

MLV 26-1 Relocation: Highway 59 Widening (10/6/2025 - 11/2/2025) MLV 26-1 to MLV 27-1: Install Road Casing (10/6/2025 - 11/2/2025)

Sta 25: Unit 1C - Force Majeure (7/16/2025 - TBD)

Station 40 South

(segment 132 FH)

912

777

(135)

777

(135)

777

(135)

637

(275)

747

(165)

MLV 32-2D TO MLV 40-2S: Pig Runs - Maintenance (10/28/2025) MLV 32-3D to MLV 40-3S: Pig Runs - Maintenance (10/21/2025)

MLV 39-1 to MLV 40-1S: Anomaly Remediation (10/7/2025 - 10/20/2025)

MLV 39-2 to MLV 40-2S: Anomaly Remediation (9/23/2025 - 10/6/2025)

Station 40 KN South

(segment 501

FH)

268

268

175

(93)

Sta 500-1 to Sta 823 (MLV 507-1): Pig Run - Maintenance (M) (10/29/2025)

Station 47

(segment 143 FH)

1,226

1221

(5)

1221

(5)

1221

(5)

1221

(5)

1221

(5)

MLV 47-1A to MLV 48-1: Class Change (9/1/2025 - 12/31/2025) 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 53-2BREH to MLV 53-2BR: Special Permit Replacement (9/1/2025 - 10/15/2025)

Sta 47: Unit 1D - Flush & Clean Cooling Systems (10/20/2025 - 10/24/2025) Sta 47: Unit 2D - Flush & Clean Cooling Systems (10/20/2025 - 10/24/2025)

Station 63

(segment 163 FH)

1,233

1200

(33)

1160

(73)

1160

(73)

1160

(73)

845

(388)

MLV 63-4D to MLV 71-4S: Pig Runs - Caliper / IMU 10/30/25 (10/30/2025) MLV 63-4D to MLV 71-4S: Pig Runs - Cleaning / Gauge 10/28/25 (10/28/2025) MLV 84-1 to MLV 85-1: Class Change Pipe Replacement (9/11/2025 - 10/4/2025)

MLV 84-4 to MLV 85-4: Class Change Pipe Replacement (10/6/2025 - 10/25/2025)

Station 87

100 Leg

(segment 163 BH)

1,439

1300

(139)

1300

(139)

1300

(139)

1310

(129)

1310

(129)

MLV 83-3 to MLV 83-3B: Install Backpressure Regulator (10/1/2025 - 10/15/2025)

MLV 83-4 to MLV 83-4B: Install Backpressure Regulator (10/16/2025 -

10/31/2025)

Station 823

(segment 823 BH)

686

686

Station 834

(segment 834 BH)

679

590

(89)

670

(9)

670

(9)

670

(9)

664

(15)

Sta 834: Annual ESD Test (9/29/2025)

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

Station 847

(segment 847 BH)

284

260

(24)

284

160

(124)

160

(124)

284

MLV 856-1 to MLV 860-1: Pig Runs - Cal / IMU 10/21/25 (10/21/2025)

MLV 856-1 to MLV 860-1: Pig Runs - Cleaning / Gauge 10/16/25 (10/16/2025) MLV 856-1 to MLV 860-1: Pig Runs - MFL-C 10/23/25 (10/23/2025)

Sta 836A: Annual ESD Test (9/30/2025)

Station 823 Muskrat Line (segment 509 BH)

124

(34)

124

Sta 823 to MLV 516: Pig Run - Maintenance (M) (10/1/2025)

Station 534 South of Pool (segment 530 BH)

1,820

1798

(22)

1798

(22)

1798

(22)

1798

(22)

1798

(22)

Sta 530: Unit 3A - Crankshaft Replacement (6/9/2025 - 12/31/2025) Sta 530: Unit 5A - Top-End Overhaul (6/9/2025 - 12/31/2025)

MLV 548

(segment 542 BH)

1,597

545

(1052)

545

(1052)

1580

(17)

1580

(17)

1562

(35)

MLV 540-2 to MLV 540-2A: Shallow Pipe Lowering (9/30/2025 - 10/7/2025) Sta 546: Unit 4A - Engine and Compressor Overhaul (9/29/2025 - 11/7/2025)

-Primary impact restrictions may be necessary

TGP - Outage Impact Report

-Major impact restrictions may be necessary

October 2025 (updated 07/24/25)

-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

(9/29 - 10/5)

Week 2

(10/6 - 10/12)

Week 3

(10/13 - 10/19)

Week 4

(10/20 - 10/26)

Week 5

(10/27 - 11/2)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Station 860

(segment 548 BH)

1,516

1500

(16)

1500

(16)

1440

(76)

1500

(16)

1500

(16)

Sta 550: Unit 2A - Compressor Overhaul (8/25/2025 - 10/17/2025)

Sta 550: Unit 3A - Engine Overhaul (10/13/2025 - 11/15/2025) Sta 550: Unit 3A - Turbocharger Exchange (10/27/2025 - 11/7/2025)

Station 860 North (Segment 860 BH)

1,793

1780

(13)

1780

(13)

1780

(13)

1780

(13)

1780

(13)

Sta 860: Unit 1A - Aftercooler Jacket Water Inspection (6/17/2024 - 12/31/2025)

Station 110

(segment 187 BH)

(south thru Kentucky)

2,645

2245

(400)

2190

(455)

2115

(530)

1710

(935)

1710

(935)

MLV 106-1 to MLV 111-7: Pig Runs - AFD Combo 10/14/25 (10/14/2025)

MLV 106-1 to MLV 111-7: Pig Runs - Cleaning / Gauge 10/9/25 (10/9/2025) MLV 106-1 to MLV 111-7: Pig Runs - EMAT 10/16/25 (10/16/2025)

MLV 108-2 to MLV 109-2: Special Permit Pipe Replacement (M) (10/27/2025 - 11/28/2025)

MLV 108-3 to MLV 109-3: Special Permit Pipe Replacement (9/24/2025 - 10/15/2025)

MLV 109-2 to 109-2A: Special Permit Pipe Replacement (10/16/2025 - 10/31/2025)

MLV 109-3 to MLV 109-3A: Class Change Pipe Replacement (10/16/2025 - 10/31/2025)

MLV 109-3 to MLV 109-3A: Special Permit Pipe Replacement (10/16/2025 - 10/31/2025)

MLV 866-1 to MLV 867-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 868-1 to MLV 869-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 869-1 to MLV 870-1: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 870-1 to MLV 870-1R: Anomaly Remediation (10/21/2025 - 11/26/2025) MLV 871-2 to MLV 871-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 871-2A to MLV 872-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 872-2 to MLV 873-2: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 873-2 to MLV 873-2A: Anomaly Remediation (8/25/2025 - 10/4/2025) MLV 90-3 to MLV 91-3: HDD River Crossing Replacement (10/16/2025 - 10/27/2025)

MLV 96-5 to MLV 102-5: Pig Runs - AFD Combo 9/30/25 (9/30/2025) MLV 96-5 to MLV 102-5: Pig Runs - EMAT 10/2/25 (10/2/2025)

Sta 106 Clay City: Upgrade B Building Jacket Water System (9/15/2025 - 10/3/2025)

Sta 87 Portland: Annual ESD Test (10/14/2025 - 10/15/2025)

Station 114

(segment 114 BH)

920

920

850

(70)

920

Sta 118A: Unit 1A - Turbine Exchange (10/6/2025 - 10/10/2025)

Station 204

(Segment 204 BH)

1,827

1797

(30)

1797

(30)

1797

(30)

1797

(30)

1411

(416)

MLV 209-4 to MLV 204-4: Pig Runs - Cleaning / Gauge 10/30/25 (10/30/2025) MLV 213-2A to MLV 214-2: Special Permit Replacement (9/1/2025 - 10/31/2025)

Station 237

(segment 237 FH)

1,017

557

(460)

1,017

MLV 236-1 to MLV 237-1BR: Special Permit Replacement (M) (9/2/2025 - 9/30/2025)

Station 245

(segment 245 FH)

997

997

925

(72)

997

Sta 241: Unit 1B - 2K Maintenance (10/7/2025 - 10/8/2025) Sta 241: Unit 2B - 2K Maintenance (10/9/2025 - 10/10/2025)

Station 254

(segment 256 FH)

1,213

920

(293)

920

(293)

920

(293)

920

(293)

920

(293)

Sta 254: Unit 4A - Replace Power Cylinder Head (5/16/2025 - 11/1/2025)

Sta. 254: Bldg A Stack Replacement and Unit Upgrades (7/14/2025 - 11/1/2025)

Station 261 Discharge East (segment 261 FH)

941

941

930

(11)

941

Sta 261: Unit 4A - Compressor Rod Packing (M) (10/6/2025 - 10/9/2025)

Station 267 South (segment 266 FH)

469

312

(157)

312

(157)

312

(157)

312

(157)

312

(157)

Sta. 267: Bldg A Controls Upgrade (9/2/2025 - 11/26/2025)

Station 307

(segment 307 BH)

1,150

1,150

Station 315

(segment 315 BH)

1,854

1,854

Station 321

(segment 321 FH)

2,102

1850

(252)

1240

(862)

1240

(862)

1240

(862)

2,102

MLV 320-2A to MLV 322-2: Drip Removal 321-2-1 (M) (10/7/2025 - 10/20/2025)

Sta 323: Unit 1A - Drive Modernization Upgrade (9/29/2025 - 10/3/2025) Sta. 323A Lackawaxen: Annual ESD Testing (9/29/2025 - 9/30/2025)

MLV 324

(segment 324 FH)

1,767

1,767

Station 405 HC Line (segment 299 FH)

803

803

690

(113)

803

Sta 405A: Unit 1A - 8K Solar Turbine Borescope Inspection (10/15/2025) Sta 405A: Unit 1A - Water Wash (10/14/2025)

							-Primary impact restrictions may be necessary
		TGP - Outage Impact Report					-Major impact restrictions may be necessary
	October 2025 (updated 07/24/25)						-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 (9/29 - 10/5)	Week 2 (10/6 - 10/12)	Week 3 (10/13 - 10/19)	Week 4 (10/20 - 10/26)	Week 5 (10/27 - 11/2)	Primary Outage(s)
Station # / Lateral		Est. Operational Capacity (Operational Impact) - Thousand Dth					Primary Outage(s)
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.

TSP/TSP Name: 1939164-TENNESSEE GAS PIPELINE	Critical: Y
Notice Type Desc (1): MAINTENANCE	Notice Type Desc (2): MAINTENANCE
Notice Eff Date/Time: 07/24/2025 3:20:46PM	Notice End Date/Time: 07/25/2025 9:00:00am
Post Date/Time: 7/24/2025 3:20:46 PM	Notice ID: 395321
Reqrd Rsp: 1	Rsp Date: 07/24/2025
Notice Stat Desc: INITIATE	Prior Notice:
Subject: TGP Outage Impact Report