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Customer WebexSeptember 6, 2011

Review Maintenance Information PostingsReview of Upcoming Outages

September & October 2011Gulf CoastCentralNorthern

Other major 2011 outagesQ&A

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).

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.

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TGP Scheduled Outages

Updated as of: 08/26/11Tennessee Gas Pipeline 2011 Pipeline Outage and Maintenance Summary

This is a summary of the current status of all TGP 2011 Pipeline Outages and Maintenance Projects. This document is subject to change as the season progresses to reflect the updated status of all outages and maintenance projects including, but not limited to, project delays, cancellations and additions.

Additionally, anticipated impact and restrictions are subject to change. *Unless otherwise noted, 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).* Indicates revision

Revised

Start Date

End Date

Prev. Start Date

Prev. End Date

Location Leg ZoneMaintenance

ActivityAnticipated Impact

Potential Restric-

tion Level

TOS Potential Restrictions

Meter(s) in impacted area

 09/12/1

109/16/11     Station 323 300 4

Electrical maintenance; ESD Test.

These activities will require a Station outage, and based upon customer nominations restrictions may become necessary.

SOP

Potential restrictions through a pro-rata portion of Secondary Out of Path (Loan, Park Withdrawal, IT-X, IT, AOT, PAT, Payback From Tennessee, EDS/ERS, SOP) nominations pathed through Station 323.

***09/12/1

109/17/11 09/04/11 09/13/11

MLV 307-2 to MLV 308-2

300 4 Install launcher.

Physical flow will be suspended at meter 020449 HIGHLAND PENNSYLVANIA for the duration of this project. No additional service impact is anticipated.

MTR  020449 HIGHLAND PENNSYLVANIA

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GreenNo Impact Anticipated

YellowRestrictions are possible, but not likely.With extended duration, restrictions could be necessary from time to time.

RedRestrictions are probable, ORMeter(s) affected, ORCombination of the above.

MLV 7-2 to 9-2 Emergent Anomaly 7/19 to 12/31

Line 823X-1300Line abandonment (M)

8/22 to 9/11

MLV 21-3A to 22-3 Line lowering (M) 8/18 to 9/21

Anomaly remediationsMLV 46-1 to 47-1 - 9/16 to 9/17MLV 45-1 to 46-1 - 9/12 to 9/15

MLV 44-1 to 45-1 - 9/6 to 9/9MLV 42-1 to 43-1 - 9/1 to 9/11

MLV 41-1A to 41-1 - 9/19 to 9/23

MLV 20 to MLV 21 (all three lines) - Line lowering 9/10 to 10/15

Station 823 (~4 hours)ESD Test 9/13

Unit testing 9/13 to 9/16

509A-2900Line abandonment (M)

9/15 to 9/18

Anomaly remediationsMLV 539-1 to 540-1 - 9/24 to 10/5MLV 538-2 to 539-2 - 9/17 to 9/24MLV 537-2 to 538-2 - 9/6 to 9/17MLV 536-2 to 537-2 - 9/15 to 9/24

Vermilion 245Filter separator installation

9/19 to 9/30

Line 21B-100 (Tomball Line)Hydrostatic test. (M) 9/20 to 9/30

Sta 823 to MLV 516Maintenance pigging (M) 9/20

Station 827Peco filter change 9/22

527A-2400 (SP 57 to SP 77)Line abandonment (M)

9/8 to 9/11

MLV 200-4 to 202-4 Anomaly remediation

7/5 to 10/7

Station 47Unit 1E compressor cleaning

9/12 to 9/18

MLV 562-2 to 565-2Emergent anomaly 7/27 to 11/1

Anomaly remediationsMLV 79-1 to 82-1 - 9/12 to 10/15MLV 82-3C to 86-3 - 7/13 to 9/30MLV 83-1 to 85-1 - 8/19 to 9/12

MLV 867-2 to 871-2Anomaly remediation 8/19 to 9/13

MLV 63-4 to 64-4Hydrostatic test

8/22 to 9/23

MLV 555-1 to 559-1Anomaly remediation 8/30 to 9/24

MLV 78-3 to 79-3Install pig launchers, pipe and

mainline valves. 9/6 to 9/24

Station 200 ESD test

9/13 to 9/14

Station 47 B &C Bldg(1 at a time) BPS removal

9/27 to 9/29

Station 54Substation maintenance

9/27 to 9/30

MLV 550-1 to 552-1Anomaly remediation (M) 9/24 to

10/15

Station 315HP replacement

3/9 to 9/15

Anomaly RemediationsMLV 245-1 to 246-1 - 9/19 to 9/30

MLV 246-1 to 247-1 - 8/8 to 9/9MLV 259-1 to 260-1 - 9/12 to 9/23

Emergent Anomaly RemediationsMLV 208-1 to 209-1 - 8/24 to 9/16MLV 207-1 to 208-1 - 9/10 to 9/15MLV 213-1 to 214-1 - 9/10 to 9/15

MLV 312-2 to 313-2 Install receiver (M)

8/25 to 9/9

Station 249Unit 2A maintenance 9/26 to 9/30Unit 1B maintenanceb9/6 to 9/8

Unit 2B maintenance 9/16 to 9/16

Station 313 Unit work - 9/6 to 9/22

Tie in gas cooler/filter separator9/13 to 9/15

Station 241Unit 1A install catalyst

9/8 to 9/24

MLV 307-2 to 308-2Install launcher (M)

9/9 to 9/15

Station 405AUnit maintenance 9/9 to 9/11

Station 245Fuel modifications 9/10Unit work 9/20 to 9/22

Station 266 (Mendon) Unit 1B overhaul 9/12 to 9/16

Station 323Electric maintenance/ESD Test

9/12 to 9/16

Station 224ESD Test 9/13

Units 1A-4A maintenance 9/19 to 9/23

MLV 334-1 to 336-1Pipe relocation (M) 9/13 to 9/19

Station 313 A bldg controls 9/19 to 9/26

300 Line Expansion Tie-insMLV 315-2 to 315A-102 - 9/19 to 9/25

MLV 317-AD2 to 317A-101 - 9/19 to 9/26MLV 321-2 to 321-101 - 9/20 to 9/26

MLV 313A-400 to 313A-405 (HC Line)Anomaly remediation 9/20 to 9/30

Line 264B-101 (Spencer)Anomaly remediation 9/26 to 10/1

Line 273B-101 Haverhill Lateral - Anomaly remediation 9/26 to 10/1/11Station 237

ESD Test 9/27

Station 319 ESD test (1 day)

9/28 to 10/7

Line 261B-100 (Springfield )Hydrostatic test (M) 9/29 to 10/3

MLV 211-1 to 212-1Emergent Anomaly (M)

9/10 to 9/15

Station 229 ESD Test. 9/15

MLV 25-2 to 27-2Hydrostatic test

10/4 to 10/31

Station 40 - Unit 500 C1Unit inspection 10/3 to 10/6

Branch line inspections (M)MLV 33-1 to 34-1 - 10/4 to 10/7

MLV 26-1 to 27-1 - 10/10 to 10/13MLV 19-1 to 20-1 - 10/17 to 10/21MLV 15-1 to 16-1 - 10/24 to 10/27MLV 14-1 to 15-1 - 10/28 to 11/2

MLV 16-3 to 17-3Relocate pig receiver

10/6 to 10/24

Bluewater—SystemPecan Island to Cocodrie

Pigging operations. 10/18 to 10/23

MLV 539-1 to 540-1Anomaly remediation

9/24 to 10/5

MLV 41-1 to 42-1Anomaly remediation (M)

10/4 to 10/22

Bear Creek StorageFall shut in test. 10/18 to 10/24

Station 1ESD Test. 10/27

MLV 32-3 to 34-3Hydrostatic test (M)

10/4 to 10/31

MLV 834-1 to 835-1ILI pigging operations 10/17 to 10/18

MLV 63-1 to 69-1ILI pigging operations

10/20 to 10/22

Station 96MCC replacement

10/3 to 10/14

MLV 200-4 to 202-4 Anomaly remediation

7/5 to 10/7

Anomaly RemediationsMLV 550-2 to 554-2 - 10/15 to 10/24MLV 540-1 to 541-1 - 10/12 to 10/26MLV 540-2 to 541-2 - 10/26 to 11/3

MLV 110-2 to 114-2ILI pigging operations 10/5

Station 200MCC replacement

10/17 to 10/31

MLV 100-4 to 101-4Pipe replacement

10/22 to 11/4

Station 843Yard welding10/26 to 10/27

MLV 550-1 to 552-1Anomaly remediation (M) 9/24 to

10/15

Anomaly remediations (M)MLV 540-2 to 541-2 - 10/26 to 11/3MLV 539-2 to 540-2 - 10/5 to 10/12

Station 2413A Unit maintenance 9/26 to 10/7

B Unit maintenance 10/10 to 10/15

Line 217A (Pittsburg Spur)ILI pigging operation 10/1

MLV 313A-405 to 410 (HC Line) - Anomaly remediation 10/1 to 10/7

Meter 020914 (Sabinsville) Meter upgrade 10/1 to 10/16

Station 265EReplace BPS system (M)

10/3 to 10/7

Fall shut in test.Harrison Storage - 10/3 to 10/7

Hebron/Ellisburg Storage 10/24 to 10/28

300 Line Expansion Tie-ins MLV 325-2 to 325D-101 - 10/3 to 10/20MLV 320-2L to 320-2A - 10/13 to 10/21MLV 314A-101 to 315-2 - 10/9 to 10/23

Line 265E-100 (RI) ILI pigging operation 10/4

Station 266ESD Test

10/4 to 10/5

MLV 213-3 to 214-3Hydrostatic test. 10/10 to 10/21

MLV 237-1 to 245-1Efficiency pigging. 10/11

MLV 270B-101.1 to 270B-105ILI pigging (M) 10/11 to 10/13

MLV 318-1 to 319-1, 320-1 to 321-1, and 322-1 to 323-1Anomaly remediations (M) 10/18 to 10/28

27

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

Station315

Station317

Station325

Station313 MLV 316 MLV 318 MLV 320 MLV 324MLV 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

Station319

Station321

Station323

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

Station315

Station323

Station325

Station313

28

Station40

MLV 707

MLV 706

MLV 705

MLV 704

MLV 703

MLV 702

MLV 701

MLV 700

0126

88 P

ANOL

A TR

ANSP

ORT

2

0120

33 C

ARTH

AGE

TRAN

SPOR

T

0121

41 C

ARTH

AGE

GAS U

NIT

13 (B

i 2 0

723

0207

23 C

ARTH

AGE

GAS

UNIT

13

(Bi 1

214

1)

0100

31 E

AST

TEXA

S PLA

NT D

EHYD

RATI

ON

0112

00 E

NTEX

PAN

OLA

TRAN

SPOR

T (C

I)

0115

25 B

ELLE

BOW

ER D

EHYD

RATI

ON

0127

64 S

TATE

LINE

PRO

CESS

ING:

RIP

704

F

0128

07 LO

GANS

PORT

B: R

IP 7

04H

101.

1A

0127

59 B

URFO

RD G

ATHE

RING

: RIP

704

E 1

01.1

0120

81 B

ETHA

NY LO

NGST

REET

FIE

LD

0120

26 G

RAND

CAN

E

0127

06 LO

GANS

PORT

0113

27 S

PIDE

R DE

HYDR

ATIO

N

0127

25 D

E SO

TO G

ATHE

RING

0126

07 D

ESOT

O HO

LLY

FIEL

D01

2583

BEN

SON

AND

CONV

ERSE

0128

14 B

LACK

STON

E NO

1: R

IP 7

03K

101.

1

0114

42 N

ABOR

TON

DEHY

D D

N BE

LL 1

(CI)

0127

75 T

RENT

ON S

ALES

: RIP

703

H 1

5.38

0127

65 H

ARRI

S 19

.1: R

IP 7

03G

101.

1

0127

36 M

ARTI

N TI

MBE

R (C

O)

0126

10 W

EST

MAN

SFIE

LD02

0628

PLE

ASAN

T HI

LL T

RANS

PORT

(CI)

0127

86 B

LACK

STON

E IV

ORY:

RIP

702

M 1

01.1

0116

68 B

RUSH

Y BA

YOU

FIEL

D

0117

55 G

ROGA

N FI

ELD

(CI)

0113

30 C

HEM

ARD

LAKE

DEH

YDRA

TION

0115

90 G

ROGA

N FI

ELD

(CI)

0115

98 SA

N M

IGUE

L CRE

EK FI

ELD

(CI)

0111

43 G

ROGA

N DE

HYDR

ATIO

N

TRAN

SPOR

T (C

I)

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 700—at Station 40 would have to shut in or schedule flow to Enterprise meter 020723.

Station703

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