1. D E P E N D A B L E N A T U R A L G A S www.elpaso.com | NYSE:EP Customer Webex October 5, 2011

2. Review of Upcoming Outages October & Winter 2011 Gulf Coast Central Northern Q&A

3. 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 Tennessee Gas Pipeline tariff to mean a period of twenty-four consecutive hours, beginning and ending at 9:00 a.m. (Central Clock Time).

4. Scheduled dates are subject to change. Projects may be added, altered, delayed or cancelled. TGP will provide notice of such additions or changes via PASSKEY postings. Dates as posted on PASSKEY should be deemed correct in the event of conflicts between PASSKEY posted dates and dates within this presentation.

5. Green No Impact Anticipated Yellow Restrictions are possible, but not likely. With extended duration, restrictions could be necessary from time to time. Red Restrictions are probable, OR Meter(s) affected, OR Combination of the above.

6. Branch line inspection (M) MLV 33-1 to 34-1 10/18 to 10/20 MLV 26-1 to 27-1 10/11 to 10/13 MLV 19-1 to 20-1 10/3 to 10/8 MLV 14-1 to 15-1 10/24 to 11/2 Station 703 Repair seal 10/4 to 10/6 Station 40 Unit 500 C1 Unit inspection 10/10 to 10/13 MLV 834-1 to 835-1 Cleaning/Caliper/ILI pigging 10/10 to 10/13 523M-7300 and 523M-7600 Line abandonment (M) 10/4 to 10/15 Anomaly remediation MLV 41-1 to 42-1 (M) 10/3 to 10/12 MLV 45-1 to 47-1 10/7 to 10/14 MLV 43A-100 to 43-101A Maintenance pigging (M) 10/12 Station 827 Peco filter change 10/12 to 10/14 Vermilion 245 Vent stack/filter separator installation 10/1 to 10/15 MLV 20 to 21 (all three lines) Line lowering 9/10 to 10/17 Station 409 Unit 1A Maintenance 10/17 Maintenance Pigging St 823 to St 40 10/20 St 823 to St 827 10/20 BluewaterSystem Pigging operations 10/18 to 10/23 MLV 16-3 to 17-3 Relocate pig receiver 10/6 to 10/24 Bear Creek Storage Fall shut in test. 10/18 to 10/24 Station 1 ESD Test 10/27 MLV 9-1 to 11-1 Maintenance pigging 10/27 Hydrostatic test MLV 25-2 to 27-2 10/4 to 10/31 MLV 32-3 to 34-3 10/4 to 10/31 MLV 21-3A to 22-3 Line lowering (M) 8/18 to 11/1 MLV 7-2 to 9-2 Emergent anomaly 7/19 to 12/31 Maintenance pigging 409A-1100 (Rio Bravo) 11/1 409A-100 (Pemex) 10/27

7. Anomaly remediation MLV 541-1 to 542-1 (M) 9/20 to 10/5 MLV 540-2 to 541-2 (M) 10/26 to 10/29 MLV 539-2 to 540-2 (M) 10/5 to 10/12 Station 96 MCC replacement 10/3 to 10/14 Anomaly remediation MLV 550-1 to 552-1 10/24 to 11/18 MLV 540-1 to 541-1 10/12 to 10/26 MLV 539-1 to 540-1 9/19 to 10/7 MLV 114-2 to 110-2 ILI pigging10/13 MLV 115-2 to 116-2 Anomaly remediation 10/3 to 10/14 Anomaly remediation MLV 83-1 to 85-1 10/5 to 10/20 MLV 80-1 to 82-1 10/17 to 11/8 MLV 562-2 to 565-2 Emergent anomaly 7/27 to 10/21 Station 87 E Bldg outage 10/17 to 10/21 MLV 847-1 to 851-1 Cleaning/Caliper/ILI pigging 10/17 to 10/27 Station 843 Yard welding 10/26 to 10/27 Station 200 MCC replacement 10/17 to 10/31 MLV 100-4 to 101-4 Pipe replacement 10/22 to 11/4 MLV 200-4B to 204-4 Valve replacements 10/24 to 12/2 MLV 40-2 to 47-2 Pipeline Outage 4/14 to 11/1 (est)

8. Anomaly remediation MLV 313A-403 to -404 9/20 to 10/8 MLV 313A-406 to -407 10/3 to 10/5 MLV 313A-410 to -410 10/3 to 10/5 300 Line Tie-ins MLV 314A-101 to 315-2 10/17 to 10/20 MLV 317-AD2 to 317A-101 9/26 to 10/5 MLV 320-2L to 320-2 10/17 to 10/20 MLV 321-2 to 321-101 10/6 to 10/12 MLV 325-2 to 325D-101 10/16 to 10/20 Emergent anomaly MLV 213-1 to 214-1 9/12 to 10/7 MLV 208-1 to 209-1 8/24 to 10/5 Station 319 ESD test (1 day) 9/28 to 10/7 Station 265E Replace BPS system 10/3 to 10/7 Fall shut in test Harrison Storage 10/3 to 10/7 Hebron/Ellisburg 10/24 to 10/28 MLV 237-1 to 245-1 Efficiency pigging 10/11 MLV 356-1 to 336-1 Cleaning Pig 10/11 Station 245 Unit maintenance 10/3 to 10/13 Station 229 Unit maintenance 10/11 to 10/13 MLV 270B-101.1 to -105 ILI pigging 10/11 to 10/13 Meter 020200 (Union City) Meter modifications (M) 10/12 to 10/13 MLV 270B-105 to -106 ILI pigging 10/110to 10/14 Station 241 B Unit maintenance 10/10 to 10/15 Unit 3A maintenance 10/16 to 10/28 Meter 020914 (Sabinsville) Meter upgrade (M) 10/1 to 10/16 Station 313 Unit maintenance 9/6 to 10/20 Station 270B ESD Test 10/25 to 10/26 Anomaly remediations MLV 318-1 to 319-1 MLV 320-1 to 321-1 MLV 322-1 to 323-1 10/18 to 10/28 MLV 334-1 to 336-1 Pipe relocation (M) 10/24 to 10/31 MLV 213-3 to 214-3 Hydrostatic test 10/24 to 11/4 MLV 267-1 and Concord Lateral Emergent anomaly 9/13-11/1 Pipeline Outage MLV 214-4 to 216-4 3/1 to 11/1 (est) MLV 209-1 to 210-1 3/1 to 11/1 (est)

9. Efficiency pigging MLV 32-1 to 40-1 (M) 11/8 MLV 32-3 to 40-3 (M) 11/9 MLV 17-1 to 9-1 Maintenance pigging 11/16 Branch line inspection (M) MLV 14-1 to 15-1 10/24 to 11/2 MLV 15-1 to 16-1 11/8 to 11/10 MLV 3-1 to 4-1 11/14 to 12/3 Carthage St 40 Pipe replacement 11/1 to 11/3 Station 703 Unit maintenance 11/1 to 11/3 Station 527 MCC replacement 11/7 MLV 526-1 to 527-1 Maintenance Pigging 11/7 to 11/12 MLV 533-1 to 534-1 Anomaly remediation (M) 11/11 to 11/14 Line 21B-100 (Tomball Line) Hydrostatic test (M) 12/1 to 12/20 MLV 550-1 to 552-1 Anomaly remediation 10/24 to 11/18

10. Anomaly remediation MLV 557-1 to 559-1 11/28 to 12/2 MLV 555-1 to 557-1 11/4 to 11/18 MLV 550-2 to 554-2 11/28 to 12/5 MLV 541-2 to 542-2 11/15 to 11/18 MLV 40-2 to 47-2 Pipeline Outage 4/14 to 11/1 (est) MLV 80-1 to 82-1 Anomaly remediation 10/17 to 11/8 MLV 100-4 to 101-4 Pipe replacement 10/22 to 11/4 MLV 200-4B to 204-4 Valve replacements 10/24 to 12/2

11. MLV 260A-100 (Northampton) Cleaning Pig 11/8 to 11/9 Station 319 Emissions Testing 11/28 to 12/2 Line 217A (Pittsburg Spur) Cleaning and ILI pigging 12/1 Station 315 Crane Install 11/8/ to11/10 Pipeline Outage MLV 214-4 to 216-4 3/1 to 11/1 (est) MLV 209-1 to 210-1 3/1 to 11/1 (est) MLV 267-1 and Concord Lateral Emergent anomaly 9/13-11/1

12. 12 MLV 314 Meters in the MLV 318-1 to 319-1 valve section: 012823 ELLIOTT DEHY: RIP 318 101.1 012769 EVANCHICK DEHY: RIP 318C 101.1 020652 WYALUSING SALES Station 315 Station 317 Station 325 Station 313 MLV 316 MLV 318 MLV 320 MLV 324 MLV 322 Meters in the MLV 320-1 to 321-1 valve section: 012751 HOP BOTTOM DEHYD: RIP 320C 101.1 012841 AUBURN DEHYDRATION: RIP 320-1 0.04 012782 LOTT DEHYDRATION: RIP 320D 101.1A 012778 TEEL DEHYDRATION: RIP 320H 101.1A 012825 STRICKLAND HILL DEHY: RIP 320K 101.1 012793 SPRINGVILLE DEHY: RIP 320I 101.1 012821 DIMOCK DEHY: RIP 320J 101.1 012794 KORBAN DEHY:RIP 320E 101.1 Meters in the MLV 322-1 to 323-1 valve section: 020277 HONESDALE PENNSYLVANIA SALES Station 319 Station 321 Station 323 Reduced operating pressures by 20% MLV 318-1 to 319-1, 320-1 to 321-1, and 322-1 to 323-1 Anomaly remediations (M) 10/18 to 10/28 Station 315 Station 323 Station 325 Station 313

13. 13 Station 40 MLV 707 MLV 706 MLV 705 MLV 704 MLV 703 MLV 702 MLV 701 MLV 700 012688 PANOLA TRANSPORT 2 012033 CARTHAGE TRANSPORT 012141 CARTHAGE GAS UNIT 13 (Bi 2 0723 020723 CARTHAGE GAS UNIT 13 (Bi 1 2141) 010031 EAST TEXAS PLANT DEHYDRATION 011200 ENTEX PANOLA TRANSPORT (CI) 011525 BELLE BOWER DEHYDRATION 012764 STATE LINE PROCESSING: RIP 704F 012807 LOGANSPORT B: RIP 704H 101.1A 012759 BURFORD GATHERING: RIP 704 E 101.1 012081 BETHANY LONGSTREET FIELD 012026 GRAND CANE 012706 LOGANSPORT 011327 SPIDER DEHYDRATION 012725 DE SOTO GATHERING 012607 DESOTO HOLLY FIELD 012583 BENSON AND CONVERSE 012814 BLACKSTONE NO 1: RIP 703K 101.1 011442 NABORTON DEHYD D N BELL 1 (CI) 012775 TRENTON SALES: RIP 703H 1 5.38 012765 HARRIS 19.1: RIP 703G 101.1 012736 MARTIN TIMBER (CO) 012610 WEST MANSFIELD 020628 PLEASANT HILL TRANSPORT (CI) 012786 BLACKSTONE IVORY: RIP 702M 101.1 011668 BRUSHY BAYOU FIELD 011755 GROGAN FIELD (CI) 011330 CHEMARD LAKE DEHYDRATION 011590 GROGAN FIELD (CI) 011598 SAN MIGUEL CREEK FIELD (CI) 011143 GROGAN DEHYDRATION TRANSPORT (CI) Pipe replacement in Station 40 yard. 11/1-11/3 Impact: Carthage Lateral shut in at Station 40. -Physical flow into the Carthage Lateral must match physical flow out of the Carthage Lateral. -All receipt meters between MLV 707 (end of lateral) and MLV 700at Station 40 would have to shut in or schedule flow to Enterprise meter 020723. Station 703

14. Questions?

15. Suggestions for improvements to this meeting Are the meetings beneficial? Is additional information needed? Questions after the meeting? Other? Email to one of the following: Your scheduler PASSKEY Portal