Southern Natural Gas Company 2015 Outage Review Meeting Customer con call and Webex May 20, 2015

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Agenda Review Unscheduled Outages Review of Upcoming Outages Contacts 6/4/2018 6:55 AM Agenda Review Unscheduled Outages Review of Upcoming Outages May/June & July North System South System South Louisiana Outages for the remainder of 2015 Contacts © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6/4/2018 6:55 AM Disclaimers Anticipated Impacts are estimates. Actual nominations, market demand, weather and pipeline conditions, etc. will determine if, and through what level, restrictions become necessary. Unless otherwise stated, all scheduled dates represent gas days as defined in the Southern Natural Gas Pipeline tariff to mean a period of twenty-four consecutive hours, beginning and ending at 9:00 a.m. (Central Clock Time). Scheduled dates are subject to change. Projects may be added, altered, delayed or cancelled. SNG will provide notice of such additions or changes via SoNet Premier postings. Dates as posted on SoNet should be deemed correct in the event of conflicts between SoNet posted dates and dates within this presentation. © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Color Key for Maps Green Yellow Red No Impact Anticipated Restrictions are possible With extended duration, restrictions could be necessary from time to time Meter(s) affected are noted with (M) Red Restrictions are probable

Southern Natural Gas Pipeline Chattanooga Rome SC North System Hartwell Muldon GA MS Bell Mills Tarrant Aiken Elba Express McConnells Atlanta Pell City DeArmanville Louisville Wrens Providence Pickens Reform Ocmulgee Ellerslie Hall Gate Bear Creek Onward Auburn Thomaston Elba Rankin Selma Elmore Holy Trinity Bienville Bay Springs Gallion York South System Riceboro Logansport Enterprise Gwinville AL Albany LA Pearl River Brookman Pavo South Louisiana Franklinton White Castle FL Toca Compressor Station Storage Field LNG Shady Side

Southern Natural Gas Pipeline Unscheduled Outage Update Chattanooga Rome SC North System Hartwell Muldon GA MS Tarrant Bell Mills Aiken McConnells Elba Express Atlanta Reform DeArmanville Providence Pell City Hall Gate Louisville Wrens Pickens Ocmulgee Ellerslie Bear Creek Onward Auburn Thomaston Logansport Elba Rankin Bay Springs Selma Gallion Elmore Holy Trinity Bienville York South System Riceboro Enterprise Gwinville AL Albany LA Pearl River Brookman Pavo South Louisiana Franklinton White Castle unit outage return to service 9-30-15 Impact of 85 MMcf/d of 805 MMcf/d available White Castle FL Toca Compressor Station Storage Field LNG Franklinton unit outage return to service May of 2015 Shady Side

SNG North System Maintenance Review May/June/July Remediation on 24” NMLL through May Chattanooga Relocation of 6” Rome Calhoun line May/June Huntsville Remediation of North Alabama line 6-1-15 to 6-14-15 Relocation of NMLL 7-13-15 to 7-17-15 AL Rome Bear Creek unit maintenance Through May of 2015 Muldon Storage Remediation on 2ndNML Louisville to Reform 5-4-15 to 6-30-15 350 MMcf/d of 690 MMcf/d Remediation NMLL 5-4-15 to 5-22-15 Atlanta MS Tarrant Bell Mills Pell City McConnells Reform DeArmanville Louisville Providence GA Pickens Maintenance on NML 6-15-15 to 6-20-15 65 MMcf/d impact of 550 MMcf/d available Remediation on NML 6-1-15 to 6-18-15 140 MMcf/d impact of 350 MMcf/d available Onward Pressure test on 2ndNML 5-4-15 to 5-31-15 350 MMcf/d impact of 690 MMcf/d available Bear Creek Storage AL Logansport Bienville Rankin LA Remediation on 14” Logansport line June Pipeline remediation on NMLL 6-15-15 to 6-19-15 Compressor Station Storage Field Southern will be conducting other general maintenance during this period

SNG South System Maint. Review May/June/July MS Replace control panels Thomaston Comp. Sta. 7-6-15 to 8-14-15 220 MCF/d of 1.6 BCF/d Hartwell Aiken Atlanta Hydro-test SMLL May timeframe 140 MMcf/d impact of 1.6 BCF/d available Elba Express GA Wrens Hydro-test Huber #1 line 7-13-15 to 7-31-15 Ocmulgee Hallgate AL Ellerslie Auburn Thomaston Elba Gallion Selma Elmore Riceboro York Remediation on Montgomery Columbus line 5-22-15 to 5-29-15 Holy Trinity Enterprise Bay Springs Gwinville Albany Brookman Pavo Compressor Station Storage Field LNG Southern will be conducting other general maintenance during this period

SNG South Louisiana System Maintenance Review May/June/July Gwinville Pearl River MS LA Franklinton West Leg White Castle Toca East Leg White Castle, Shadyside Unit Maintenance thru May West Leg Capacity impact up to 150 MMcf/d of 805 MMcf/d available Remediation on Duck Lake to Franklinton line June thru September 40 MMcf/d impact of 805 MMcf/d available Shadyside Compressor Station Storage Field Southern will be conducting other general maintenance during this period

North System remainder of the year Item # 21-Southern will be conducting remediation on the North Main loop line west of our Tarrant compressor station August 17th to August 27th. We do not anticipate an impact to customers. P63 Item # 22-Southern will be conducting maintenance pigging on our Marietta Branch line east of our Bell Mills compressor station in northwest Georgia November 4th. Customers may experience lower than normal pressures during the pigging. Item # 23-Southern will be conducting planned maintenance at the Bell Mills compressor station in Cleburne County, Alabama September/October timeframe. Bell Mills compressor station is located on Southern’s North Mainline system. The maintenance will require a station outage, and will result in lower than normal pressure at delivery points east and north of the station on Southern’s Chattanooga lines. Capacity will be restricted to 90 MMcf/d of the 250 MMcf/d available. IT and secondary firm will be impacted and firm services could be impacted depending on requirements north of the station. However, Southern will try to minimize the impact by scheduling this during a low load period. Item # 24-Southern will be conducting a hydro-test on our 2ND North Main line east of our McConnells compressor station during the September/October time frame. Capacity could be reduced as much as 285 MMcf/d of the 590 MMcf/d available. IT and secondary firm could be impacted depending on demand requirements. Item # 25-Southern will be conducting remediation on our 2nd North Main line west of our Tarrant compressor station during the September/October time frame. Capacity could be reduced as much as 355 MMcf/d of the 550 MMcf/d available. IT and secondary firm could be impacted depending on demand requirements. We will coordinate this work with the hydro test east of our McConnells compressor station item #24.

North System remainder of the year cont. Item # 26-Southern will be conducting remediation on our 2nd North Main line east of our Tarrant compressor station October 5th through October 30th. Capacity could be reduced as much as 245 MMcf/d of the 550 MMcf/d available. IT and secondary firm could be impacted depending on demand requirements. Item # 27-Southern will be conducting a relocation of our 12” Chattanooga Branch line in Catoosa County Georgia sometime during the last half of the year. We do not anticipate an impact to customers. Item # 28-Fall Storage Field Shut-in tests - The Muldon Storage Field shut-in test will begin on Tuesday, October 6th and continue through Monday, October 12th. The Bear Creek Storage Field shut-in test will begin on Tuesday, October 20th and continue through Monday, October 26th.   As a result of the shut-in test, Southern will reduce each CSS customer's DIQ and DWQ on a pro-rata basis. Each CSS customer will be allocated thirty- six percent (36%) of its currently effective DIQ and DWQ posted on SoNet Premier during the Muldon shut-in test and sixty-four percent (64%) during the Bear Creek shut-in test. This reduced level is subject to change, if necessary, during the test. Please be aware that this temporary reduction in DIQ and DWQ will affect not only CSS service, but also will affect related injection/withdrawal capacity under no-notice firm transportation (FT-NN) service

South System remainder of the year Item # 29-Southern will be conducting maintenance pigging on 30” Riverdale line north of our Thomaston compressor station in Georgia sometime during the month of September. Customers may experience lower than normal pressure during the pigging. Item # 30-Southern will be conducting upgrade work at the Thomaston compressor station in central Georgia during the mid-August to October 30th timeframe. Capacity through Thomaston will be reduced as much as 330 MMcf/d of the 1.6 BCF/d available. IT and secondary firm will be impacted and firm services could be impacted depending on requirements east and north of the station. A study of this project is still ongoing to minimize the impact. Item # 31-Southern will be conducting remediation on our Brunswick line south of our Ocmulgee compressor station in Georgia in the September/October timeframe. We do not anticipate an impact to customers. Item # 32-Southern will be conducting upgrade work at the Brookman compressor station in eastern Georgia during October 12th through October 31st. We do not anticipate an impact to customers. Item # 33-Southern will be conducting upgrade work at the Riceboro compressor station in eastern Georgia November 30th through December 31st. We do not anticipate an impact to customers.

South Louisiana System remainder of the year Item # 34-Maintenance at White Castle and Shadyside compressor stations. West Leg capacity impact up to 150 MMcf/d of 805 MMcf/d available in the September/October timeframe

Gas Control Contacts Adam Krustchinsky – Manager (713) – 420 – 3265 (office) (713) – 202-7035 (cell) adam_krustchinsky@kindermorgan.com Kalman (Kal) Dankovich – Outage Coordinator (713) – 420 – 7522 (office) (713) – 420 – 7305 (Gas Control) kalman_dankovich@kindermorgan.com Jimmy Reese – Lead Controller (713) – 420 – 7310 (office) jimmy_reese@kindermorgan.com Daniel Mitchell – Lead Controller (713) – 420 – 5874 (office) daniel_mitchell@kindermorgan.com

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