Southern Natural Gas Notice 710131

-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 12/05/24)

-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 (12/9)

Tuesday (12/10)

Wednesday (12/11)

Thursday (12/12)

Friday (12/13)

Saturday (12/14)

Sunday (12/15)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

209

209

209

209

209

209

Duncanville Lateral (segment 90)

36

36

36

36

36

36

36

36

Dearmanville (segment 150)

355

355

355

355

355

355

355

355

LA East Leg (Segment 330)

1,010

445

(565)

445

(565)

445

(565)

1,010

1,010

1,010

1,010

Main Pass Franklinton 2nd loop line south of Franklinton: Pipeline maintenance (11/25/2024 - 12/11/2024)

White Castle (segment 340)

798

798

798

798

798

798

798

798

LA West Leg (segment 350)

798

648

(150)

648

(150)

648

(150)

648

(150)

648

(150)

648

(150)

648

(150)

Franklinton Compressor Station: Unscheduled unit maintenance Proj-5122-15 (12/4/2024 - 12/15/2024)

Sesh (segment 380)

506

506

506

506

506

506

506

506

Gwinville (segment 400)

234

234

234

234

234

234

234

234

Enterprise (segment 430)

2,450

2,450

2,450

2,450

2,450

2,450

2,450

2,450

Auburn (segment 460)

2,095

1975

(120)

1975

(120)

1975

(120)

1975

(120)

1975

(120)

1975

(120)

1975

(120)

Auburn compressor station: Unscheduled unit outage (12/2/2024 - 12/15/2024)

Ellerslie (segment 490)

1,663

1633

(30)

1633

(30)

1633

(30)

1633

(30)

1633

(30)

1633

(30)

1633

(30)

Ellerslie compressor station: Unscheduled unit outage-5267-4 (11/14/2024 - 1/30/2025)

Thomaston West (segment 490)

1,650

1440

(210)

1440

(210)

1440

(210)

1440

(210)

1440

(210)

1440

(210)

1440

(210)

Thomaston compressor station: Unscheduled unit outage-5272-4 (12/1/2024 - 12/15/2024) Thomaston compressor station: Unscheduled unit outage-5272-5 (12/3/2024 - 12/15/2024)

South Atlanta (segment 510)

537

537

537

537

537

537

537

537

Thomaston East (segment 530)

900

900

900

900

900

900

900

900

South Georgia (segment 650)

143

143

143

143

143

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.

December 2024 (updated 12/05/24)

-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 (12/2 - 12/8)

Week 2 (12/9 - 12/15)

Week 3 (12/16 - 12/22)

Week 4 (12/23 - 12/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

209

Duncanville Lateral (segment 90)

36

36

36

Dearmanville (segment 150)

355

355

355

Main Pass Franklinton loop line south of Franklinton: Pipeline maintenance (12/16/2024 - 12/20/2024)

LA East Leg (Segment 330)

1,010

445

(565)

1,010

White Castle (segment 340)

798

798

798

Sesh (segment 380)

506

506

506

Gwinville (segment 400)

234

234

234

Gwinville Compressor Station: Unit Maintenance, Proj-521113 (12/16/2024 - 12/18/2024)

Gwinville East (segment 410)

1,802

1647

(155)

1,802

Enterprise (segment 430)

2,450

2,450

2,450

Ellerslie compressor station: Unscheduled unit outage-5267-4 (11/14/2024 - 1/30/2025)

Ellerslie (segment 490)

1,663

1633

(30)

1633

(30)

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 2025 (updated 12/05/24)

-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 (12/30 - 1/5)

Week 2 (1/6 - 1/12)

Week 3 (1/13 - 1/19)

Week 4 (1/20 - 1/26)

Week 5 (1/27 - 2/2)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

209

209

209

209

Duncanville Lateral (segment 90)

36

36

36

36

36

36

Dearmanville (segment 150)

355

355

355

355

355

355

White Castle (segment 340)

798

798

798

798

798

798

Sesh (segment 380)

500

500

500

500

500

500

Gwinville (segment 400)

234

234

234

234

234

234

Enterprise (segment 430)

2,450

2,450

2,450

2,450

2,450

2,450

Ellerslie (segment 490)

1,663

1633

(30)

1633

(30)

1633

(30)

1633

(30)

1633

(30)

Ellerslie compressor station: Unscheduled unit outage-5267-4 (11/14/2024 - 1/30/2025)

South Atlanta (segment 510)

537

537

537

537

537

537

Thomaston East (segment 530)

900

900

900

900

900

900

South Georgia (segment 650)

143

143

143

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.

February 2025 (updated 12/05/24)

-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 (2/3 - 2/9)

Week 2 (2/10 - 2/16)

Week 3 (2/17 - 2/23)

Week 4 (2/24 - 3/2)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

209

209

209

Duncanville Lateral (segment 90)

36

36

36

36

36

Dearmanville (segment 150)

355

355

355

355

355

White Castle (segment 340)

798

798

798

798

798

Sesh (segment 380)

500

500

500

500

500

Gwinville (segment 400)

234

234

234

234

234

Enterprise (segment 430)

2,450

2,450

2,450

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

1,663

1,663

1,663

South Atlanta (segment 510)

537

537

537

537

537

Thomaston East (segment 530)

900

900

900

900

900

South Georgia (segment 650)

143

143

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.

March 2025 (updated 12/05/24)

-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 (3/3 - 3/9)

Week 2 (3/10 - 3/16)

Week 3 (3/17 - 3/23)

Week 4 (3/24 - 3/30)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

209

209

209

209

209

Duncanville Lateral (segment 90)

36

36

36

36

36

Dearmanville (segment 150)

355

355

355

355

355

White Castle (segment 340)

798

798

798

798

798

Sesh (segment 380)

500

500

500

500

500

Gwinville (segment 400)

234

234

234

234

234

Enterprise (segment 430)

2,450

2,450

2,450

2,450

2,450

Ellerslie (segment 490)

1,663

1,663

1,663

1,663

1,663

South Atlanta (segment 510)

537

537

537

537

537

Thomaston East (segment 530)

900

900

900

900

900

South Georgia (segment 650)

143

143

143

143

143

Holy Trinity (segment 655)

143

143

143

143

113

(30)

Holy Trinity Compressor Station: Unit maintenance, Proj-58051 (3/30/2025)

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.