Southern Natural Gas Notice 711444

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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: 12/04/2025 3:52:27PM	Notice End Date/Time: 12/05/2025 9:00:00am
Post Date/Time: 12/4/2025 3:52:27 PM	Notice ID: 711444
Reqrd Rsp: 1	Rsp Date: 12/04/2025
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 12/04/25)

-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 (12/8)

Tuesday (12/9)

Wednesday (12/10)

Thursday (12/11)

Friday (12/12)

Saturday (12/13)

Sunday (12/14)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Bienville (segment 10)

120

120

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

White Castle Compressor Station: Scheduled Unit Maintenance Proj-50109 (11/10/2025 - 12/14/2025)

Sesh (segment 380)

507

507

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

Hall Gate (segment 560)

700

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

Hall Gate Compressor Station: Scheduled Unit Maintenance Proj-52831 (12/8/2025 - 12/14/2025)

South Main Line east of Hall Gate: Unscheduled Pipeline Maintenance(remediation) Proj-SNG-21445 (10/28/2025 - 12/14/2025)

South Georgia (segment 650)

143

143

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.
	December 2025 (updated 12/04/25)					-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 (12/1 - 12/7)	Week 2 (12/8 - 12/14)	Week 3 (12/15 - 12/21)	Week 4 (12/22 - 12/28)	Primary Outage(s)
Station / Seg		Est. Operational Capacity (Operational Impact) - Thousand Dth				Primary Outage(s)
Bienville (segment 10)	120			120	120
Onward (segment 30)	209			209	209
Duncanville Lateral (segment 90)	36			36	36
Dearmanville (segment 150)	355			355	355
White Castle (segment 340)	798			798	798
Sesh (segment 380)	507			507	507
Gwinville (segment 400)	234			234	234
Bay Springs (segment 420)	1,887			1647 (240)	1647 (240)	Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)
Enterprise (segment 430)	2,450			2,450	2,450
Ellerslie (segment 490)	1,663			1,663	1,663
South Atlanta (segment 510)	537			537	537
Thomaston East (segment 530)	900			900	900
South Georgia (segment 650)	143			143	143
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.

January 2026 (updated 12/04/25)

-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 (12/29 - 1/4)

Week 2 (1/5 - 1/11)

Week 3 (1/12 - 1/18)

Week 4 (1/19 - 1/25)

Week 5 (1/26 - 2/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Bienville (segment 10)

120

120

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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.

February 2026 (updated 12/04/25)

-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 (2/2 - 2/8)

Week 2 (2/9 - 2/15)

Week 3 (2/16 - 2/22)

Week 4 (2/23 - 3/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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.

March 2026 (updated 12/04/25)

-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 (3/2 - 3/8)

Week 2 (3/9 - 3/15)

Week 3 (3/16 - 3/22)

Week 4 (3/23 - 3/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Selma (segment 460)

2,435

2,435

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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: 12/04/2025 3:52:27PM	Notice End Date/Time: 12/05/2025 9:00:00am
Post Date/Time: 12/4/2025 3:52:27 PM	Notice ID: 711444
Reqrd Rsp: 1	Rsp Date: 12/04/2025
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 12/04/25)

-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 (12/8)

Tuesday (12/9)

Wednesday (12/10)

Thursday (12/11)

Friday (12/12)

Saturday (12/13)

Sunday (12/14)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Bienville (segment 10)

120

120

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

728

(70)

White Castle Compressor Station: Scheduled Unit Maintenance Proj-50109 (11/10/2025 - 12/14/2025)

Sesh (segment 380)

507

507

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

Hall Gate (segment 560)

700

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

650

(50)

Hall Gate Compressor Station: Scheduled Unit Maintenance Proj-52831 (12/8/2025 - 12/14/2025)

South Main Line east of Hall Gate: Unscheduled Pipeline Maintenance(remediation) Proj-SNG-21445 (10/28/2025 - 12/14/2025)

South Georgia (segment 650)

143

143

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.
	December 2025 (updated 12/04/25)					-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 (12/1 - 12/7)	Week 2 (12/8 - 12/14)	Week 3 (12/15 - 12/21)	Week 4 (12/22 - 12/28)	Primary Outage(s)
Station / Seg		Est. Operational Capacity (Operational Impact) - Thousand Dth				Primary Outage(s)
Bienville (segment 10)	120			120	120
Onward (segment 30)	209			209	209
Duncanville Lateral (segment 90)	36			36	36
Dearmanville (segment 150)	355			355	355
White Castle (segment 340)	798			798	798
Sesh (segment 380)	507			507	507
Gwinville (segment 400)	234			234	234
Bay Springs (segment 420)	1,887			1647 (240)	1647 (240)	Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)
Enterprise (segment 430)	2,450			2,450	2,450
Ellerslie (segment 490)	1,663			1,663	1,663
South Atlanta (segment 510)	537			537	537
Thomaston East (segment 530)	900			900	900
South Georgia (segment 650)	143			143	143
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.

January 2026 (updated 12/04/25)

-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 (12/29 - 1/4)

Week 2 (1/5 - 1/11)

Week 3 (1/12 - 1/18)

Week 4 (1/19 - 1/25)

Week 5 (1/26 - 2/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Bienville (segment 10)

120

120

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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.

February 2026 (updated 12/04/25)

-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 (2/2 - 2/8)

Week 2 (2/9 - 2/15)

Week 3 (2/16 - 2/22)

Week 4 (2/23 - 3/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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.

March 2026 (updated 12/04/25)

-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 (3/2 - 3/8)

Week 2 (3/9 - 3/15)

Week 3 (3/16 - 3/22)

Week 4 (3/23 - 3/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

Duncanville Lateral (segment 90)

Dearmanville (segment 150)

355

355

White Castle (segment 340)

798

798

Sesh (segment 380)

500

500

Gwinville (segment 400)

234

234

Bay Springs (segment 420)

1,887

1647

(240)

1647

(240)

1647

(240)

1647

(240)

Bay Springs Compressor Station: Scheduled Unit Maintenance, Proj-52161 (7/8/2025 - 3/31/2026)

Enterprise (segment 430)

2,450

2,450

Selma (segment 460)

2,435

2,435

Ellerslie (segment 490)

1,663

1,663

South Atlanta (segment 510)

537

537

Thomaston East (segment 530)

900

900

South Georgia (segment 650)

143

143

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 711444

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