Southern Natural Gas Notice 709664

-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 08/08/24)

-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 (8/12)

Tuesday (8/13)

Wednesday (8/14)

Thursday (8/15)

Friday (8/16)

Saturday (8/17)

Sunday (8/18)

Primary Outage(s) that may Impact Throughput

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

203

203

203

203

203

203

Duncanville Lateral (segment 90)

36

36

36

36

36

36

36

36

Dearmanville (segment 150)

346

346

346

346

346

346

346

346

White Castle (segment 340)

772

772

772

772

772

772

772

772

Gwinville South (segment 370)

1,123

1103

(20)

1103

(20)

1103

(20)

1103

(20)

1103

(20)

1,123

1,123

Franklinton Gwinville line south of Gwinville: Pipeline maintenance (pressure test) (M) (7/5/2024 - 8/16/2024)

Sesh (segment 380)

504

504

504

504

504

504

504

504

Gwinville Pool (segment 390)

1,607

1577

(30)

1577

(30)

1577

(30)

1577

(30)

1577

(30)

1577

(30)

1577

(30)

Gwinville compressor station: Unit maintenance-52677 (8/12/2024 - 8/25/2024)

Gwinville (segment 400)

234

199

(35)

199

(35)

199

(35)

199

(35)

199

(35)

234

234

Rankin compressor station: Unscheduled unit outage-Proj-46102 (8/6/2024 - 8/16/2024)

Enterprise (segment 430)

2,306

2,306

2,306

2,306

2,306

2,306

2,306

2,306

Gallion (Segment 440)

2,300

2215

(85)

2215

(85)

2215

(85)

2215

(85)

2215

(85)

2,300

2,300

Gallion compressor station: Unscheduled unit outage-52369 (7/30/2024 - 8/16/2024)

Ellerslie (segment 490)

1,547

1,547

1,547

1,547

1,547

1,547

1,547

1,547

Thomaston West (segment 490)

1,535

1520

(15)

1520

(15)

1520

(15)

1520

(15)

1520

(15)

1520

(15)

1520

(15)

Thomaston compressor station: Unscheduled unit outage-Proj. 45274 (5/23/2024 - 9/30/2024)

South Atlanta (segment 510)

522

522

522

522

522

522

522

522

Thomaston East (segment 530)

849

849

849

849

849

849

849

849

South Georgia (segment 650)

127

127

127

127

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.

August 2024 (updated 08/08/24)

-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 (7/29 - 8/4)

Week 2 (8/5 - 8/11)

Week 3 (8/12 - 8/18)

Week 4 (8/19 - 8/25)

Week 5 (8/26 - 9/1)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

203

Duncanville Lateral (segment 90)

36

36

36

Dearmanville (segment 150)

346

346

346

White Castle (segment 340)

772

772

772

GWINVILLE SOUTH

(segment 370)

1,123

973

(150)

963

(160)

Franklinton Gwinville 2nd loop line north of Pearl River: Pipeline valve maintenance (8/29/2024 - 9/5/2024)

Franklinton Gwinville loop line north of Pearl River: Pipeline valve maintenance (8/19/2024 - 8/26/2024)

Sesh (segment 380)

504

504

504

Gwinville Pool (segment 390)

1,607

1577

(30)

1,607

Gwinville compressor station: Unit maintenance-52677 (8/12/2024 - 8/25/2024)

Gwinville (segment 400)

234

234

234

Enterprise (segment 430)

2,306

2,306

2,306

Ellerslie (segment 490)

1,547

1,547

1,547

Thomaston West (segment 490)

1,535

1520

(15)

1520

(15)

Thomaston compressor station: Unscheduled unit outage-Proj. 45274 (5/23/2024 - 9/30/2024)

South Atlanta (segment 510)

522

522

522

Thomaston East (segment 530)

849

849

849

South Georgia (segment 650)

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.

September 2024 (updated 08/08/24)

-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 (9/2 - 9/8)

Week 2 (9/9 - 9/15)

Week 3 (9/16 - 9/22)

Week 4 (9/23 - 9/29)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

203

203

203

Duncanville Lateral (segment 90)

36

36

36

36

36

Dearmanville (segment 150)

346

346

346

346

346

White Castle (segment 340)

772

772

772

772

772

LA West Leg (segment 350)

735

620

(115)

620

(115)

620

(115)

620

(115)

Duck Lake Franklinton line north of White Castle: Pipeline Maintenance-SNG- (9/4/2024 - 9/14/2024) Ducklake Franklinton line north of White Castle: Pipeline maintenance-SNG-2754 (9/6/2024 - 10/3/2024)

GWINVILLE SOUTH

(segment 370)

1,123

963

(160)

1,123

1,123

1,123

Franklinton Gwinville 2nd loop line north of Pearl River: Pipeline valve maintenance (8/29/2024 - 9/5/2024)

Sesh (segment 380)

483

483

483

483

483

Gwinville (segment 400)

234

234

234

234

234

Enterprise (segment 430)

2,306

2,306

2,306

2,306

2,306

Gallion (Segment 440)

2,300

2,300

2,300

2,300

2035

(265)

Gallion compressor station: Unit maintenance (9/23/2024 - 9/24/2024)

Elmore (segment 460)

2,010

2,010

2,010

2,010

1755

(255)

Elmore compressor station: Unit maintenance (9/25/2024 - 9/26/2024)

Ellerslie (segment 490)

1,547

1,547

1,547

1,547

1,547

Thomaston West (segment 490)

1,535

1520

(15)

1520

(15)

1520

(15)

1520

(15)

Thomaston compressor station: Unscheduled unit outage-Proj. 45274 (5/23/2024 - 9/30/2024)

South Atlanta (segment 510)

522

522

522

522

522

Thomaston East (segment 530)

849

849

849

849

849

South Georgia (segment 650)

127

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.

October 2024 (updated 08/08/24)

-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 (9/30 - 10/6)

Week 2 (10/7 - 10/13)

Week 3 (10/14 - 10/20)

Week 4 (10/21 - 10/27)

Week 5 (10/28 - 11/3)

Primary Outage(s)

Est. Operational Capacity (Operational Impact) - Thousand Dth

Onward (segment 30)

203

203

203

203

203

203

Duncanville Lateral (segment 90)

36

36

36

36

36

36

Providence (segment 120)

652

652

297

(355)

652

652

652

2nd North main line east of Providence: Pipeline maintenance (valve maintenance) (10/10/2024 - 10/13/2024)

Dearmanville (segment 150)

346

346

346

346

346

346

White Castle (segment 340)

772

772

772

772

772

772

LA West Leg (segment 350)

735

535

(200)

535

(200)

535

(200)

535

(200)

535

(200)

Ducklake Franklinton line north of White Castle: Pipeline maintenance-SNG-2754 (9/6/2024 - 10/3/2024)

White Castle Franklinton loop line north of White Castle: Pipeline maintenance-SNG2861 (10/4/2024 - 11/1/2024)

Sesh (segment 380)

483

483

483

483

483

483

Gwinville (segment 400)

234

234

150

(84)

150

(84)

234

234

2ndNML east of Pickens: Pipeline maintenance-SNG-2328 (10/8/2024 - 10/16/2024)

Enterprise (segment 430)

2,306

2,306

2,306

1966

(340)

1966

(340)

2,306

York compressor station: station maintenance (10/14/2024)

York compressor station: Unit maintenance (10/23/2024 - 10/24/2024)

Gallion (Segment 440)

2,300

2,300

2,300

1855

(445)

2,300

2,300

Gallion compressor station: Station maintenance (10/15/2024)

Selma (segment 460)

2,293

2028

(265)

1953

(340)

1843

(450)

2028

(265)

2028

(265)

Auburn compressor station: station maintenance (10/18/2024) Auburn compressor station: unit maintenance (10/7/2024 - 10/8/2024) Elmore compressor station: Station maintenance (10/17/2024)

Selma Compressor station: Unit maintenance (10/1/2024 - 10/28/2024)

Ellerslie (segment 490)

1,547

1,547

1,547

1,547

1,547

1,547

Thomaston West (segment 490)

1,535

1520

(15)

1,535

1,535

1,535

1,535

Thomaston compressor station: Unscheduled unit outage-Proj. 45274 (5/23/2024 - 9/30/2024)

South Atlanta (segment 510)

522

522

522

522

522

522

Thomaston East (segment 530)

849

849

849

849

849

849

South Georgia (segment 650)

127

127

127

127

127

127

Holy Trinity (segment 655)

127

127

127

90

(37)

127

127

Holy Trinity compressor station Mainline #1: Valve maintenance (10/14/2024 - 10/20/2024)

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.

November 2024 (updated 08/08/24)

-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 (11/4 - 11/10)

Week 2 (11/11 - 11/17)

Week 3 (11/18 - 11/24)

Week 4 (11/25 - 12/1)

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)

484

484

484

484

484

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.