##### Table of Contents









UNITED STATES


SECURITIES AND EXCHANGE COMMISSION


Washington, D.C. 20549





Form 10-Q


(Mark One)


þ


QUARTERLY REPORT PURSUANT TO SECTION 13 OR
15(d)


OF THE SECURITIES EXCHANGE ACT OF 1934


For the quarterly period ended March 31, 2006


OR


o


TRANSITION REPORT PURSUANT TO SECTION 13 OR
15(d)


OF THE SECURITIES EXCHANGE ACT OF 1934


For the transition period
from                  to


Commission File
Number 1-4101





Tennessee Gas Pipeline Company




|                                         |  |                    
|---------------------------------------- |  | -------------------
|Delaware                                 |  | 74-1056569         
|(State or Other Jurisdiction             |  | (I.R.S. Employer   
|of Incorporation or Organization)        |  | Identification No.)
|                                        
|El Paso Building                         |  |                    
|1001 Louisiana Street                    |  |                    
|Houston, Texas                           |  | 77002              
|(Address of Principal Executive Offices) |  | (Zip Code)         

Telephone Number:
(713) 420-2600


þ o


12b-2


o o þ


12b-2 o þ






TENNESSEE GAS PIPELINE COMPANY MEETS THE CONDITIONS OF
GENERAL INSTRUCTION H(1)(a) AND (b) TO
FORM 10-Q AND IS
THEREFORE FILING THIS REPORT WITH A REDUCED DISCLOSURE FORMAT AS
PERMITTED BY SUCH INSTRUCTION.










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##### 










TENNESSEE GAS PIPELINE COMPANY


TABLE OF CONTENTS


|                                              |  |                                                                                                                                    |  |      |    | 
|--------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------- |  | ---- | -- | 
|                                              |  | Caption                                                                                                                            |  | Page |   
|                                              |  |                                                                                                                                    |  |      |   
|                                              |  | PART I  Financial Information                                                                                                     |  |      |    | 
|Item 1.                                       |  | Financial Statements                                                                                                               |  |      | 1  | 
|Item 2.                                       |  | Managements Discussion and Analysis
    of Financial Condition and Results of Operations                                          |  |      | 8  | 
|Item 3.                                       |  | Quantitative and Qualitative Disclosures
    About Market Risk                                                                     |  |      | *  | 
|Item 4.                                       |  | Controls and Procedures                                                                                                            |  |      | 11 | 
|                                              |  | PART II  Other Information                                                                                                        |  |      |    | 
|Item 1.                                       |  | Legal Proceedings                                                                                                                  |  |      | 12 | 
|Item 1A.                                      |  | Risk Factors                                                                                                                       |  |      | 12 | 
|                                              |  | Cautionary Statements for Purposes of the
    Safe Harbor Provisions of the Private Securities
    Litigation Reform Act of 1995 |  |      |    | 
|Item 2.                                       |  | Unregistered Sales of Equity Securities and
    Use of Proceeds                                                                    |  |      | *  | 
|Item 3.                                       |  | Defaults Upon Senior Securities                                                                                                    |  |      | *  | 
|Item 4.                                       |  | Submission of Matters to a Vote of Security
    Holders                                                                            |  |      | *  | 
|Item 5.                                       |  | Other Information                                                                                                                  |  |      | 12 | 
|Item 6.                                       |  | Exhibits                                                                                                                           |  |      | 13 | 
|                                              |  | Signatures                                                                                                                         |  |      | 14 | 
|Certification of CEO Pursuant to Section 302 
|Certification of CFO Pursuant to Section 302 
|Certification of CEO Pursuant to Section 1350
|Certification of CFO Pursuant to Section 1350








|  |                                                                                                                                                                                                   
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|* | We have not included a response to this item in this document
    since no response is required pursuant to the reduced disclosure
    format permitted by General Instruction H to
    Form 10-Q.



|             |  |                                     
|------------ |  | ------------------------------------
|/d = per day |  | BBtu = billion British thermal units





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PART I  FINANCIAL INFORMATION





Item 1. Financial Statements


TENNESSEE GAS PIPELINE COMPANY


CONDENSED CONSOLIDATED STATEMENTS OF INCOME


(In millions)


(Unaudited)


|                                       |                                          |               |     |    |      |   |     |    | 
|-------------------------------------- | ---------------------------------------- | ------------- | --- | -- | ---- | - | --- | -- | 
|                                       |                                          | Quarter Ended |    
|                                       |                                          | March 31,     |    
|                                       |                                          |               |    
|                                       |                                          | 2006          |     |    | 2005 |  
|                                       |                                          |               |     |    |      |  
|Operating revenues                     |                                          | $             | 230 |    |      | $ | 205 |   
|                                       |                                          |               |     |    |      |  
|Operating expenses                     |                                          |               |     |    |      |   |     |   
|                                       | Operation and maintenance                |               |     | 73 |      |   |     | 75 | 
|                                       | Depreciation, depletion and amortization |               |     | 41 |      |   |     | 40 | 
|                                       | Taxes, other than income taxes           |               |     | 15 |      |   |     | 13 | 
|                                       |                                          |               |     |    |      |  
|                                       |                                          |               | 129 |    |      |   | 128 |   
|                                       |                                          |               |     |    |      |  
|Operating income                       |                                          |               | 101 |    |      |   | 77  |   
|Earnings from unconsolidated affiliate |                                          |               | 3   |    |      |   | 3   |   
|Other income, net                      |                                          |               | 3   |    |      |   | 1   |   
|Interest and debt expense              |                                          |               | (33 | )  |      |   | (32 | ) 
|Affiliated interest income, net        |                                          |               | 10  |    |      |   | 3   |   
|                                       |                                          |               |     |    |      |  
|Income before income taxes             |                                          |               | 84  |    |      |   | 52  |   
|Income taxes                           |                                          |               | 32  |    |      |   | 20  |   
|                                       |                                          |               |     |    |      |  
|Net income                             |                                          | $             | 52  |    |      | $ | 32  |   
|                                       |                                          |               |     |    |      |  



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##### Table of Contents



TENNESSEE GAS PIPELINE COMPANY


CONDENSED CONSOLIDATED BALANCE SHEETS


(In millions, except share amounts)


(Unaudited)


|                                        |                                                                                                    |                                                   |                                            |       |              |       |       |       |     |       | 
|--------------------------------------- | -------------------------------------------------------------------------------------------------- | ------------------------------------------------- | ------------------------------------------ | ----- | ------------ | ----- | ----- | ----- | --- | ----- | 
|                                        |                                                                                                    | March 31,                                         |                                            |       | December 31, |      
|                                        |                                                                                                    | 2006                                              |                                            |       | 2005         |      
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|ASSETS                                 
|Current assets                          |                                                                                                    |                                                   |                                            |       |              |       |       |      
|                                        | Cash and cash equivalents                                                                          |                                                   | $                                          |      |              |       | $     |      |    
|                                        | Accounts and notes receivable                                                                      |                                                   |                                            |       |              |       |       |       |    
|                                        |                                                                                                    | Customer, net of allowance of $1 in 2006 and 2005 |                                            |       | 98           |       |       |       | 123 |      
|                                        |                                                                                                    | Affiliates                                        |                                            |       | 17           |       |       |       | 25  |      
|                                        |                                                                                                    | Other                                             |                                            |       | 28           |       |       |       | 25  |      
|                                        | Materials and supplies                                                                             |                                                   |                                            | 24    |              |       |       | 22    |    
|                                        | Deferred income taxes                                                                              |                                                   |                                            | 11    |              |       |       | 9     |    
|                                        | Other                                                                                              |                                                   |                                            | 5     |              |       |       | 8     |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total current assets                       |       |              | 183   |       |       |     | 212   | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|Property, plant and equipment, at cost  |                                                                                                    |                                                   | 3,457                                      |       |              |       | 3,345 |      
|                                        | Less accumulated depreciation, depletion and amortization                                          |                                                   |                                            | 540   |              |       |       | 543   |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | 2,917                                      |       |              |       | 2,802 |      
|                                        | Additional acquisition cost assigned to utility plant, net                                         |                                                   |                                            | 2,108 |              |       |       | 2,119 |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total property, plant and equipment, net   |       |              | 5,025 |       |       |     | 4,921 | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|Other assets                            |                                                                                                    |                                                   |                                            |       |              |       |       |      
|                                        | Notes receivable from affiliates                                                                   |                                                   |                                            | 1,121 |              |       |       | 1,098 |    
|                                        | Investment in unconsolidated affiliate                                                             |                                                   |                                            | 104   |              |       |       | 101   |    
|                                        | Other                                                                                              |                                                   |                                            | 56    |              |       |       | 43    |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | 1,281                                      |       |              |       | 1,242 |      
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total assets                               |       | $            | 6,489 |       |       | $   | 6,375 | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                       
|LIABILITIES AND STOCKHOLDERS EQUITY   
|Current liabilities                     |                                                                                                    |                                                   |                                            |       |              |       |       |      
|                                        | Accounts payable                                                                                   |                                                   |                                            |       |              |       |       |       |    
|                                        |                                                                                                    | Trade                                             |                                            | $     | 75           |       |       | $     | 85  |      
|                                        |                                                                                                    | Affiliates                                        |                                            |       | 29           |       |       |       | 18  |      
|                                        |                                                                                                    | Other                                             |                                            |       | 57           |       |       |       | 38  |      
|                                        | Current maturities of long-term debt                                                               |                                                   |                                            | 300   |              |       |       |      |    
|                                        | Taxes payable                                                                                      |                                                   |                                            | 46    |              |       |       | 37    |    
|                                        | Accrued interest                                                                                   |                                                   |                                            | 44    |              |       |       | 24    |    
|                                        | Contractual deposits                                                                               |                                                   |                                            | 21    |              |       |       | 21    |    
|                                        | Other                                                                                              |                                                   |                                            | 19    |              |       |       | 21    |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total current liabilities                  |       |              | 591   |       |       |     | 244   | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|Long-term debt, less current maturities |                                                                                                    |                                                   | 1,300                                      |       |              |       | 1,600 |      
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|Other liabilities                       |                                                                                                    |                                                   |                                            |       |              |       |       |      
|                                        | Deferred income taxes                                                                              |                                                   |                                            | 1,286 |              |       |       | 1,271 |    
|                                        | Regulatory liabilities                                                                             |                                                   |                                            | 181   |              |       |       | 170   |    
|                                        | Other                                                                                              |                                                   |                                            | 52    |              |       |       | 63    |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | 1,519                                      |       |              |       | 1,504 |      
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|Commitments and contingencies           |                                                                                                    |                                                   |                                            |       |              |       |       |      
|Stockholders equity                    |                                                                                                    |                                                   |                                            |       |              |       |       |      
|                                        | Common stock, par value $5 per share; 300 shares
    authorized; 208 shares issued and outstanding |                                                   |                                            |      |              |       |       |      |    
|                                        | Additional paid-in capital                                                                         |                                                   |                                            | 2,207 |              |       |       | 2,207 |    
|                                        | Retained earnings                                                                                  |                                                   |                                            | 872   |              |       |       | 820   |    
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total stockholders equity                 |       |              | 3,079 |       |       |     | 3,027 | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      
|                                        |                                                                                                    |                                                   | Total liabilities and stockholders equity |       | $            | 6,489 |       |       | $   | 6,375 | 
|                                        |                                                                                                    |                                                   |                                            |       |              |      



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TENNESSEE GAS PIPELINE COMPANY


CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS


(In millions)


(Unaudited)


|                                        |                                                                               |                                          |                                           |     |      |     |   |     |    |     |  
|--------------------------------------- | ----------------------------------------------------------------------------- | ---------------------------------------- | ----------------------------------------- | --- | ---- | --- | - | --- | -- | --- | -
|                                        |                                                                               | Quarter Ended                            |                                          
|                                        |                                                                               | March 31,                                |                                          
|                                        |                                                                               |                                          |                                          
|                                        |                                                                               | 2006                                     |                                           |     | 2005 |    
|                                        |                                                                               |                                          |                                           |     |      |    
|Cash flows from operating activities    |                                                                               |                                          |                                           |     |      |     |   |    
|                                        | Net income                                                                    |                                          | $                                         | 52  |      |     | $ | 32  |   
|                                        | Adjustments to reconcile net income to net cash from operating
    activities |                                          |                                           |     |      |     |   |     |   
|                                        |                                                                               | Depreciation, depletion and amortization |                                           |     | 41   |     |   |     | 40 |    
|                                        |                                                                               | Deferred income taxes                    |                                           |     | 13   |     |   |     | 9  |    
|                                        |                                                                               | Earnings from unconsolidated affiliate   |                                           |     | (3   | )   |   |     | (3 | )  
|                                        |                                                                               | Asset and liability changes              |                                           |     | (22  | )   |   |     | (5 | )  
|                                        |                                                                               |                                          |                                           |     |      |    
|                                        |                                                                               |                                          | Net cash provided by operating activities |     |      | 81  |   |     |    | 73  |  
|                                        |                                                                               |                                          |                                           |     |      |    
|Cash flows from investing activities    |                                                                               |                                          |                                           |     |      |     |   |    
|                                        | Additions to property, plant and equipment                                    |                                          |                                           | (58 | )    |     |   | (36 | ) 
|                                        | Net change in affiliate advances                                              |                                          |                                           | (23 | )    |     |   | (37 | ) 
|                                        |                                                                               |                                          |                                           |     |      |    
|                                        |                                                                               |                                          | Net cash used in investing activities     |     |      | (81 | ) |     |    | (73 | )
|                                        |                                                                               |                                          |                                           |     |      |    
|Net change in cash and cash equivalents |                                                                               |                                          |                                          |     |      |     |  |    
|Cash and cash equivalents               |                                                                               |                                          |                                           |     |      |     |   |    
|                                        | Beginning of period                                                           |                                          |                                           |    |      |     |   |    |   
|                                        |                                                                               |                                          |                                           |     |      |    
|                                        | End of period                                                                 |                                          | $                                         |    |      |     | $ |    |   
|                                        |                                                                               |                                          |                                           |     |      |    



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TENNESSEE GAS PIPELINE COMPANY


NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


(Unaudited)


1. Basis of Presentation and Significant Accounting
Policies


Basis of Presentation


10-Q 10-Q 10-K, 10-K.


Significant Accounting Policies


10-K,


Accounting for Pipeline Integrity Costs.


2. Debt and Credit Facilities


Debt




Credit Facilities


10-K.


3. Commitments and Contingencies


Legal Proceedings


Gas Measurement Cases. re: Natural Gas Royalties Qui Tam Litigation,


4



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Will
Price, et al. v. Gas Pipelines and Their Predecessors, et
al.,


Hurricane Litigation. George Barasich, et al. v. Columbia Gulf
Transmission Company, et al. Charles Villa Jr., et
al. v. Columbia Gulf Transmission Company, et al.






Environmental Matters




5



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|                                    |  |   |     |  
|----------------------------------- |  | - | --- | -
|Balance at January 1, 2006          |  | $ | 32  |  
|Reduction in estimated costs        |  |   | (10 | )
|Payments for remediation activities |  |   | (1  | )
|                                    |  |   |    
|Balance at March 31, 2006           |  | $ | 21  |  
|                                    |  |   |    



PCB Cost Recoveries. pre-collected pre-collected,


CERCLA Matters.




Guarantees


10-K


6



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4. Investment in Unconsolidated Affiliate and
Transactions with Affiliates


Investment in Unconsolidated Affiliate




|                        |                                                  |               |   |   |      |  |   |   | 
|----------------------- | ------------------------------------------------ | ------------- | - | - | ---- |  | - | - | 
|                        |                                                  | 2006          |   |   | 2005 | 
|                        |                                                  |               |   |   |      | 
|                        |                                                  | (In millions) |  
|Operating results data: |                                                  |               |   |   |      |  |   |  
|                        | Operating revenues                               |               | $ | 4 |      |  | $ | 4 | 
|                        | Operating expenses                               |               |   | 2 |      |  |   | 2 | 
|                        | Income from continuing operations and net income |               |   | 3 |      |  |   | 3 | 

Transactions with Affiliates


Cash Management Program.


Taxes.


Other Affiliate Balances.


|                                      |  |               |     |  |              |   |     | 
|------------------------------------- |  | ------------- | --- |  | ------------ | - | --- | 
|                                      |  | March 31,     |     |  | December 31, |  
|                                      |  | 2006          |     |  | 2005         |  
|                                      |  |               |     |  |              |  
|                                      |  | (In millions) |    
|Accounts and notes receivable  other |  | $             | 24  |  |              | $ | 20  | 
|Non-current note receivable           |  |               | 402 |  |              |   | 401 | 
|Contractual deposits                  |  |               | 7   |  |              |   | 7   | 
|Other non-current liabilities         |  |               | 1   |  |              |   | 1   | 

Affiliate Revenues and Expenses.




|                                                          |  |               |    |  |      |   |    | 
|--------------------------------------------------------- |  | ------------- | -- |  | ---- | - | -- | 
|                                                          |  | 2006          |    |  | 2005 |  
|                                                          |  |               |    |  |      |  
|                                                          |  | (In millions) |   
|Revenues from affiliates                                  |  | $             | 5  |  |      | $ | 5  | 
|Operation and maintenance expenses from affiliates        |  |               | 10 |  |      |   | 13 | 
|Reimbursement of operating expenses charged to affiliates |  |               | 20 |  |      |   | 19 | 

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|        |                                                                                          
|------- | -----------------------------------------------------------------------------------------
|Item 2. | Managements Discussion and Analysis of Financial
    Condition and Results of Operations

10-K, 10-Q.


Results of Operations




|                                       |                  |                      |       |     |      |   |       |    | 
|-------------------------------------- | ---------------- | -------------------- | ----- | --- | ---- | - | ----- | -- | 
|                                       |                  | 2006                 |       |     | 2005 |  
|                                       |                  |                      |       |     |      |  
|                                       |                  | (In millions, except |      
|                                       |                  | volume amounts)      |      
|Operating revenues                     |                  | $                    | 230   |     |      | $ | 205   |   
|Operating expenses                     |                  |                      | (129  | )   |      |   | (128  | ) 
|                                       |                  |                      |       |     |      |  
|                                       | Operating income |                      |       | 101 |      |   |       | 77 | 
|Earnings from unconsolidated affiliate |                  |                      | 3     |     |      |   | 3     |   
|Other income, net                      |                  |                      | 3     |     |      |   | 1     |   
|                                       |                  |                      |       |     |      |  
|                                       | EBIT             |                      |       | 107 |      |   |       | 81 | 
|Interest and debt expense              |                  |                      | (33   | )   |      |   | (32   | ) 
|Affiliated interest income, net        |                  |                      | 10    |     |      |   | 3     |   
|Income taxes                           |                  |                      | (32   | )   |      |   | (20   | ) 
|                                       |                  |                      |       |     |      |  
|                                       | Net income       |                      | $     | 52  |      |   | $     | 32 | 
|                                       |                  |                      |       |     |      |  
|Throughput volumes (BBtu/d)            |                  |                      | 4,936 |     |      |   | 5,026 |   
|                                       |                  |                      |       |     |      |  



|                                                                         |                      |                         |    |    |         |   |    |       |   |   |        |   |  |   |    |    | 
|------------------------------------------------------------------------ | -------------------- | ----------------------- | -- | -- | ------- | - | -- | ----- | - | - | ------ | - |  | - | -- | -- | 
|                                                                         |                      |                         |    |    |         |   |    | EBIT  |  
|                                                                         |                      | Revenue                 |    |    | Expense |   |    | Other |   |   | Impact |  
|                                                                         |                      |                         |    |    |         |   |    |       |   |   |        |  
|                                                                         |                      | Favorable/(Unfavorable) |   
|                                                                         |                      | (In millions)           |   
|Gas not used in operations, revaluations and other natural gas
    sales |                      | $                       | 20 |    |         | $ | 2  |       |   | $ |       |   |  | $ | 22 |   
|Higher services revenues                                                 |                      |                         | 6  |    |         |   |   |       |   |   |       |   |  |   | 6  |   
|Environmental reserve adjustment                                         |                      |                         |   |    |         |   | 3  |       |   |   |       |   |  |   | 3  |   
|Hurricanes Katrina and Rita                                              |                      |                         |   |    |         |   | (5 | )     |   |   |       |   |  |   | (5 | ) 
|Other(1)                                                                 |                      |                         | (1 | )  |         |   | (1 | )     |   |   | 2      |   |  |   |   |   
|                                                                         |                      |                         |    |    |         |   |    |       |   |   |        |  
|                                                                         | Total impact on EBIT |                         | $  | 25 |         |   | $  | (1    | ) |   | $      | 2 |  |   | $  | 26 | 
|                                                                         |                      |                         |    |    |         |   |    |       |   |   |        |  






|    |                                              
|--- | ---------------------------------------------
|(1) | Consists of individually insignificant items.

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Gas Not Used in Operations, Revaluations and Other Natural
Gas Sales. 10-K.


Higher Services Revenues.


Environmental Reserve Adjustment.


Hurricanes Katrina and Rita.


Affiliated Interest Income, Net




Income Taxes


|                   |  |                   |    |   |      |   |    |  
|------------------ |  | ----------------- | -- | - | ---- | - | -- | -
|                   |  | Quarter Ended     |   
|                   |  | March 31,         |   
|                   |  |                   |   
|                   |  | 2006              |    |   | 2005 |  
|                   |  |                   |    |   |      |  
|                   |  | (In millions,     |   
|                   |  | except for rates) |   
|Income taxes       |  | $                 | 32 |   |      | $ | 20 |  
|Effective tax rate |  |                   | 38 | % |      |   | 38 | %



Liquidity and Capital Expenditures


Liquidity Overview


non-current




9



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##### Table of Contents





Debt




Capital Expenditures






|           |       |                                       |    |                        |               |   |    |         |  |                |          |     |                |          |     |      |  |   |    |    | 
|---------- | ----- | ------------------------------------- | -- | ---------------------- | ------------- | - | -- | ------- |  | -------------- | -------- | --- | -------------- | -------- | --- | ---- |  | - | -- | -- | 
|           |       |                                       |    | Estimated Future Costs |               |   |    |         | 
|           |       | Total Costs                           |    |                        |               |   |    |         |  | Insurance      |         
|           |       | Incurred as of                        |    |                        | Operation and |   |    |         |  | Estimated Cost |          |     | Reimbursements |         
|Hurricane  |       | March 31, 2006                        |    |                        | Maintenance   |   |    | Capital |  |                | Recovery |     |                | Received |    
|           |       |                                       |    |                        |               |   |    |         |  |                |          |     |                |          |    
|           |       | (In millions, except for percentages) |   
|Ivan       |       | $                                     | 51 |                        |               | $ | 1  |         |  | $              |         |     |                |          | 100 | %    |  | $ | 22 |   
|Katrina(1) |       |                                       | 85 |                        |               |   | 20 |         |  |                | 129      |     |                |          | 37  | %(2) |  |   |   |   
|Rita       |       |                                       | 24 |                        |               |   | 10 |         |  |                | 37       |     |                |          | 80  | %    |  |   |   |   
|           |       |                                       |    |                        |               |   |    |         |  |                |          |     |                |          |    
|           | Total |                                       | $  | 160                    |               |   | $  | 31      |  |                | $        | 166 |                |          |     |      |  |   | $  | 22 | 
|           |       |                                       |    |                        |               |   |    |         |  |                |          |     |                |          |    






|    |                                                                                                                                                             
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------
|(1) | Included in our projected operation and maintenance and capital
    costs is related improvements of less than $1 million and
    $15 million, respectively.
|   
|(2) | During the quarter ended March 31, 2006, our estimated
    insurance recoveries were reduced.                                                               



Commitments and Contingencies




10



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##### Table of Contents








|        |                                                           
|------- | ----------------------------------------------------------
|Item 3. | Quantitative and Qualitative Disclosures About Market Risk

10-Q.







|        |                        
|------- | -----------------------
|Item 4. | Controls and Procedures

Evaluation of Disclosure Controls and Procedures






Changes in Internal Control Over Financial Reporting




11



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##### Table of Contents






PART II  OTHER INFORMATION





Item 1. Legal Proceedings


10-K





Item 1A. Risk Factors





CAUTIONARY STATEMENTS FOR PURPOSES OF THE SAFE
HARBOR PROVISIONS OF THE PRIVATE SECURITIES LITIGATION
REFORM ACT OF 1995




10-K.





Item 2. Unregistered Sales of Equity Securities and
Use of Proceeds


10-Q.





Item 3. Defaults Upon Senior Securities


10-Q.





Item 4. Submission of Matters to a Vote of Security
Holders


10-Q.





Item 5. Other Information




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##### Table of Contents






Item 6. Exhibits




|        |     |    |  |  |             |                                                                                                        
|------- | --- | -- |  |  | ----------- | -------------------------------------------------------------------------------------------------------
|Exhibit |     |    |  |  |            
|Number  |     |    |  |  | Description
|        |     |    |  |  |            
|        | *31 | .A |  |  |             | Certification of Chief Executive Officer pursuant to
    Section 302 of the Sarbanes-Oxley Act of 2002.
|        | *31 | .B |  |  |             | Certification of Chief Financial Officer pursuant to
    Section 302 of the Sarbanes-Oxley Act of 2002.
|        | *32 | .A |  |  |             | Certification of Chief Executive Officer pursuant to
    Section 906 of the Sarbanes-Oxley Act of 2002.
|        | *32 | .B |  |  |             | Certification of Chief Financial Officer pursuant to
    Section 906 of the Sarbanes-Oxley Act of 2002.

Undertaking




| |                                                                                                                                                                                                                                                                                                                                                                                                                                                    
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | We hereby undertake, pursuant to
    Regulation S-K,Item 601(b),
    paragraph (4)(iii), to furnish to the U.S. SEC upon request
    all constituent instruments defining the rights of holders of
    our long-term debt and our consolidated subsidiaries not filed
    herewith for the reason that the total amount of securities
    authorized under any of such instruments does not exceed
    10 percent of our total consolidated assets.

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##### Table of Contents






SIGNATURES






| |                               
| | ------------------------------
| | TENNESSEE GAS PIPELINE COMPANY



| |                                    
| | -----------------------------------
| | /s/ STEPHEN C. BEASLEY             
| |                                    
| | Stephen C. Beasley                 
| | Chairman of the Board and President
| | (Principal Executive Officer)      



| |                                             
| | --------------------------------------------
| | /s/ JOHN R. SULT                            
| |                                             
| | John R. Sult                                
| | Senior Vice President,                      
| | Chief Financial Officer and Controller      
| | (Principal Accounting and Financial Officer)

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##### Table of Contents



TENNESSEE GAS PIPELINE COMPANY


EXHIBIT INDEX




|        |     |    |  |  |             |                                                                                                        
|------- | --- | -- |  |  | ----------- | -------------------------------------------------------------------------------------------------------
|Exhibit |     |    |  |  |            
|Number  |     |    |  |  | Description
|        |     |    |  |  |            
|        | *31 | .A |  |  |             | Certification of Chief Executive Officer pursuant to
    Section 302 of the Sarbanes-Oxley Act of 2002.
|        | *31 | .B |  |  |             | Certification of Chief Financial Officer pursuant to
    Section 302 of the Sarbanes-Oxley Act of 2002.
|        | *32 | .A |  |  |             | Certification of Chief Executive Officer pursuant to
    Section 906 of the Sarbanes-Oxley Act of 2002.
|        | *32 | .B |  |  |             | Certification of Chief Financial Officer pursuant to
    Section 906 of the Sarbanes-Oxley Act of 2002.