Southern Natural Gas Notice 710787

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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: 6900518-SOUTHERN NATURAL GAS CO.	Critical: Y
Notice Type Desc (1): MAINTENANCE	Notice Type Desc (2): MAINTENANCE
Notice Eff Date/Time: 05/29/2025 4:10:39PM	Notice End Date/Time: 05/30/2025 9:00:00am
Post Date/Time: 5/29/2025 4:10:39 PM	Notice ID: 710787
Reqrd Rsp: 1	Rsp Date: 05/29/2025
Notice Stat Desc: INITIATE	Prior Notice:
Subject: Outage Impact Report

Notice Text:

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

Seven Day Forecast (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design Capacity (Thousand Dth)

Monday (6/2)

Tuesday (6/3)

Wednesday (6/4)

Thursday (6/5)

Friday (6/6)

Saturday (6/7)

Sunday (6/8)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

LA West Leg (segment 350)

695

535

(160)

535

(160)

535

(160)

535

(160)

535

(160)

695

Duck Lake Franklinton Line north of White Castle: Scheduled Pipeline Maintenance Proj-SNG-2753 (5/22/2025 - 6/6/2025)

Sesh (segment 380)

506

506

Gwinville (segment 400)

234

149

(85)

149

(85)

149

(85)

149

(85)

149

(85)

234

Pickens Compressor Station: Scheduled Unit Maintenance Proj-41251 (5/19/2025 - 6/6/2025)

Enterprise (segment 430)

2,306

2,306

Gallion (Segment 440)

2,300

2245

(55)

2245

(55)

2245

(55)

2245

(55)

2245

(55)

2,300

South Main Line east of Gallion: Scheduled Pipeline Maintenance(remediation) Proj-SNG-21939 (5/27/2025 - 6/6/2025)

Selma (segment 460)

2,293

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

Selma Compressor Station: Scheduled Unit Maintenance Proj-52451 (5/8/2025 - 7/13/2025)

Ellerslie (segment 490)

1,547

1,547

Thomaston West (segment 490)

1,535

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

Thomaston Compressor Station: Unscheduled Unit Outage Proj-52723 (1/30/2025 - 6/8/2025)

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

						-Restrictions to Primary In-Path transportation services may be necessary.
		SNG - Outage Impact Report				-Restrictions to In-Path transportation services may be necessary.
	June 2025 (updated 05/29/25)					-Restrictions to Interruptible and Out of Path transportation services may be necessary.
-No anticipated impact to transportation services.
Station / Seg	Est Nominal Design 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)
Station / Seg		Est. Operational Capacity (Operational Impact) - Thousand Dth				Primary Outage(s)
Onward (segment 30)	203		203	203	203
						North Main Line east of Louisville: Scheduled Pipeline Maintenance(valve) (M) (6/9/2025 - 6/12/2025)
Louisville East (segment 50)	520		350 (170)	520	520
Duncanville Lateral (segment 90)	36		36	36	36
Dearmanville (segment 150)	346		346	346	346
White Castle (segment 340)	772		772	772	772
Sesh (segment 380)	506		506	506	506
Gwinville (segment 400)	234		234	234	234
Enterprise (segment 430)	2,306		2,306	2,306	2,306
						Selma Compressor Station: Scheduled Unit Maintenance , Proj-52451 (5/8/2025 - 7/13/2025)
Selma (segment 460)	2,293		2128 (165)	2128 (165)	2128 (165)
Ellerslie (segment 490)	1,547		1,547	1,547	1,547
South Atlanta (segment 510)	522		522	522	522
Thomaston East (segment 530)	849		849	849	849
South Georgia (segment 650)	127		127	127	127
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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

July 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

Onward (segment 30)

203

203

178

(25)

178

(25)

North Main 2nd loop line west of Onward: Scheduled Pipeline Maintenance(PT), Proj-SNG-15323 (7/21/2025 - 8/15/2025)

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

Sesh (segment 380)

500

500

Gwinville Pool (segment 390)

1,607

1,607

1377

(230)

1377

(230)

1377

(230)

1,607

Franklinton Gwinville 2nd Loop Line south of Gwinville: Scheduled Pipeline Maintenance, Proj-SNG-36213 (7/9/2025 - 7/24/2025)

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

Gallion (Segment 440)

2,300

2,300

2195

(105)

South Main 2nd Loop Line east of Gallion: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/1/2025 - 8/14/2025)

Selma (segment 460)

2,293

2128

(165)

2128

(165)

2,293

Selma Compressor Station: Scheduled Unit Maintenance , Proj-52451 (5/8/2025 - 7/13/2025)

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

August 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

North Main 2nd loop line west of Onward: Scheduled Pipeline Maintenance(PT), Proj-SNG-15323

Onward (segment 30)

203

178

(25)

178

(25)

203

(7/21/2025 - 8/15/2025)

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

Duck Lake Franklinton Line north of White Castle: Scheduled Pipeline Maintenance,

LA West Leg (segment 350)

695

695

535

(160)

Proj-SNG-22856 (8/25/2025 - 8/29/2025)

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

South Main 2nd Loop Line east of Gallion: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/1/2025 -

Gallion (Segment 440)

2,300

2195

(105)

2195

(105)

2,300

8/14/2025)

South Main 2nd Loop Line east of Selma: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/15/2025 -

Selma (segment 460)

2,293

2,293

2158

(135)

2158

(135)

2,293

8/24/2025)

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

September 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

Onward (segment 30)

203

203

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

LA West Leg (segment 350)

695

595

(100)

535

(160)

535

(160)

535

(160)

White Castle Franklinton loop line north of White Castle: Pipeline Maintenance(replacement), Proj-SNG-2933/SNG-3089 (9/8/2025 - 10/7/2025)

White Castle Franklinton Loop Line north of White Castle: Scheduled Pipeline Maintenance, Proj-SNG-22856 (9/3/2025 - 9/10/2025)

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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: 6900518-SOUTHERN NATURAL GAS CO.	Critical: Y
Notice Type Desc (1): MAINTENANCE	Notice Type Desc (2): MAINTENANCE
Notice Eff Date/Time: 05/29/2025 4:10:39PM	Notice End Date/Time: 05/30/2025 9:00:00am
Post Date/Time: 5/29/2025 4:10:39 PM	Notice ID: 710787
Reqrd Rsp: 1	Rsp Date: 05/29/2025
Notice Stat Desc: INITIATE	Prior Notice:
Subject: Outage Impact Report

Notice Text:

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

Seven Day Forecast (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design Capacity (Thousand Dth)

Monday (6/2)

Tuesday (6/3)

Wednesday (6/4)

Thursday (6/5)

Friday (6/6)

Saturday (6/7)

Sunday (6/8)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

LA West Leg (segment 350)

695

535

(160)

535

(160)

535

(160)

535

(160)

535

(160)

695

Duck Lake Franklinton Line north of White Castle: Scheduled Pipeline Maintenance Proj-SNG-2753 (5/22/2025 - 6/6/2025)

Sesh (segment 380)

506

506

Gwinville (segment 400)

234

149

(85)

149

(85)

149

(85)

149

(85)

149

(85)

234

Pickens Compressor Station: Scheduled Unit Maintenance Proj-41251 (5/19/2025 - 6/6/2025)

Enterprise (segment 430)

2,306

2,306

Gallion (Segment 440)

2,300

2245

(55)

2245

(55)

2245

(55)

2245

(55)

2245

(55)

2,300

South Main Line east of Gallion: Scheduled Pipeline Maintenance(remediation) Proj-SNG-21939 (5/27/2025 - 6/6/2025)

Selma (segment 460)

2,293

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

2128

(165)

Selma Compressor Station: Scheduled Unit Maintenance Proj-52451 (5/8/2025 - 7/13/2025)

Ellerslie (segment 490)

1,547

1,547

Thomaston West (segment 490)

1,535

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

1495

(40)

Thomaston Compressor Station: Unscheduled Unit Outage Proj-52723 (1/30/2025 - 6/8/2025)

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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

						-Restrictions to Primary In-Path transportation services may be necessary.
		SNG - Outage Impact Report				-Restrictions to In-Path transportation services may be necessary.
	June 2025 (updated 05/29/25)					-Restrictions to Interruptible and Out of Path transportation services may be necessary.
-No anticipated impact to transportation services.
Station / Seg	Est Nominal Design 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)
Station / Seg		Est. Operational Capacity (Operational Impact) - Thousand Dth				Primary Outage(s)
Onward (segment 30)	203		203	203	203
						North Main Line east of Louisville: Scheduled Pipeline Maintenance(valve) (M) (6/9/2025 - 6/12/2025)
Louisville East (segment 50)	520		350 (170)	520	520
Duncanville Lateral (segment 90)	36		36	36	36
Dearmanville (segment 150)	346		346	346	346
White Castle (segment 340)	772		772	772	772
Sesh (segment 380)	506		506	506	506
Gwinville (segment 400)	234		234	234	234
Enterprise (segment 430)	2,306		2,306	2,306	2,306
						Selma Compressor Station: Scheduled Unit Maintenance , Proj-52451 (5/8/2025 - 7/13/2025)
Selma (segment 460)	2,293		2128 (165)	2128 (165)	2128 (165)
Ellerslie (segment 490)	1,547		1,547	1,547	1,547
South Atlanta (segment 510)	522		522	522	522
Thomaston East (segment 530)	849		849	849	849
South Georgia (segment 650)	127		127	127	127
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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

July 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

Onward (segment 30)

203

203

178

(25)

178

(25)

North Main 2nd loop line west of Onward: Scheduled Pipeline Maintenance(PT), Proj-SNG-15323 (7/21/2025 - 8/15/2025)

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

Sesh (segment 380)

500

500

Gwinville Pool (segment 390)

1,607

1,607

1377

(230)

1377

(230)

1377

(230)

1,607

Franklinton Gwinville 2nd Loop Line south of Gwinville: Scheduled Pipeline Maintenance, Proj-SNG-36213 (7/9/2025 - 7/24/2025)

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

Gallion (Segment 440)

2,300

2,300

2195

(105)

South Main 2nd Loop Line east of Gallion: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/1/2025 - 8/14/2025)

Selma (segment 460)

2,293

2128

(165)

2128

(165)

2,293

Selma Compressor Station: Scheduled Unit Maintenance , Proj-52451 (5/8/2025 - 7/13/2025)

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

August 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

North Main 2nd loop line west of Onward: Scheduled Pipeline Maintenance(PT), Proj-SNG-15323

Onward (segment 30)

203

178

(25)

178

(25)

203

(7/21/2025 - 8/15/2025)

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

Duck Lake Franklinton Line north of White Castle: Scheduled Pipeline Maintenance,

LA West Leg (segment 350)

695

695

535

(160)

Proj-SNG-22856 (8/25/2025 - 8/29/2025)

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

South Main 2nd Loop Line east of Gallion: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/1/2025 -

Gallion (Segment 440)

2,300

2195

(105)

2195

(105)

2,300

8/14/2025)

South Main 2nd Loop Line east of Selma: Scheduled Pipeline Maintenance, Proj-SNG-8793 (8/15/2025 -

Selma (segment 460)

2,293

2,293

2158

(135)

2158

(135)

2,293

8/24/2025)

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

-Restrictions to Primary In-Path transportation services may be necessary.

SNG - Outage Impact Report

-Restrictions to In-Path transportation services may be necessary.

September 2025 (updated 05/29/25)

-Restrictions to Interruptible and Out of Path transportation services may be necessary.

-No anticipated impact to transportation services.

Station / Seg

Est Nominal Design 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

Onward (segment 30)

203

203

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

346

346

White Castle (segment 340)

772

772

LA West Leg (segment 350)

695

595

(100)

535

(160)

535

(160)

535

(160)

White Castle Franklinton loop line north of White Castle: Pipeline Maintenance(replacement), Proj-SNG-2933/SNG-3089 (9/8/2025 - 10/7/2025)

White Castle Franklinton Loop Line north of White Castle: Scheduled Pipeline Maintenance, Proj-SNG-22856 (9/3/2025 - 9/10/2025)

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Enterprise (segment 430)

2,306

2,306

Ellerslie (segment 490)

1,547

1,547

South Atlanta (segment 510)

522

522

Thomaston East (segment 530)

849

849

South Georgia (segment 650)

127

127

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.

Southern Natural Gas Notice 710787

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