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| (a)   | El Paso enters into an agreement      with respect to such Third Party Sale within six months of the date of      receipt by Enron of the First OfferNotice; |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | the Third Party Sale is a cash      transaction at a price no loss than the Proposed Price;  and |
|-----------------|--------------------------------------------------------------------------------------------------|

| (c)   | the third-party purchaser shall,      before the consummation of the Third Party Sale, have entered into an      agreement with Enron, in form and substance reasonably satisfactory to      Enron, whereby such purchaser assumes the same obligations and becomes      entitled to the same benefits as El Paso under the terms of the Capital      Stock Agreement (as amended pursuant to this letter      agreement). |
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|                                                                                                                                                                                                                                                                                                                                      | Page    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| SECTION      1 - DEFINITIONS...................................................................................................................................................................................................................................................................................                      | 2       |
| SECTION      2 - INVESTMENT      REPRESENTATION..............................................................................................................................................................................................................................................                                             | 8       |
| SECTION      3 - CAPITAL STOCK OF      CITRUS.......................................................................................................................................................................................................................................................                                      | 8       |
| (a)      Ownership and Original      Issuance.....................................................................................................................................................................................................................................                                                        | 8       |
| (b) Transfers of      Shares Between Principalsand Their      Subsidiaries..................................................................................................................................................................................................................................................... |  8 |
| (c) Disposition      of      Shares.........................................................................................................................................................................................................................................................                                         | 10      |
| (d)      Sale of      Shares......................................................................................................................................................................................................................................................................                                        | 11      |
| (e) Pledge      of Shares and      Rights under this      Agreement�.................................................................................................................................................................................................                                                         | 14      |
| (f) Opinion      of      Counsel.............................................................................................................................................................................................................................................................                                        | 15      |
| (g) Legend      on      Certificates.......................................................................................................................................................................................................................................................                                          | 16      |
| (h) Limitations...........................................................................................................................................................................................................................................................................                                           | 16      |
| SECTION      4 - BOARD OF      DIRECTORS................................................................................................................................................................................................................................................................                                  | 17      |
| SECTION      5 - CHAIRMAN OF THE      BOARD......................................................................................................................................................................................................................................................                                         | 18      |
| SECTION      6 - INFORMAL MEETINGS OF      PRINCIPALS.................................................................................................................................................................................................................................                                                    | 19      |
| SECTION      7 - PERFORMANCE OF      AGREEMENTS..........................................................................................................................................................................................................................................                                                 | 19      |
| SECTION      S - PRINCIPAL      OFFICE      OF      CITRUS.................................................................................................................................................................................................................................................                               | 19      |
| SECTION      9 -      AUDITORS.....................................................................................................................................................................................................................................................................................                       | 19      |
| SECTION      10      - INSPECTION;      BOOKS AND      RECORDS..................................................................................................................................................................................................................................                                          | 20      |
| SECTION      1l-OPERATING      AGREEMENT..........................................................................................................................................................................................................................................................                                        | 20      |
| SECTION      12 - PIPELINE      EXPANSION..............................................................................................................................................................................................................................................................                                   | 20      |
| SECTION      13 -      FINANCING.................................................................................................................................................................................................................................................................................                         | 21      |
| SECTION      14 - VOTING SECURITIES OF THE PRINCIPALS........................................................................................................................................................................................................................                                                             | 21      |
| SECTION      15 - BUY-SELL      RIGHTS.....................................................................................................................................................................................................................................................................                               | 23      |
| SECTION      16 - CHANGE OF      CONTROL............................................................................................................................................................................................................................................................                                      | 26      |
| SECTION      17 - TERM OF      AGREEMENT............................................................................................................................................................................................................................................................                                      | 31      |
| SECTION      18 -      NOTICE.........................................................................................................................................................................................................................................................................................                    | 32      |
| SECTION      19 - GOVERNING      LAW......................................................................................................................................................................................................................................................................                                | 33      |
| SECTION      20 -      HEADINGS...................................................................................................................................................................................................................................................................................                        | 33      |
| SECTION      21 - SUCCESSORS      BOUND...............................................................................................................................................................................................................................................................                                    | 33      |
| SECTION      22 - NO      WAIVER................................................................................................................................................................................................................................................................................                          | 34      |
| SIGNATURES........................................................................................................................................................................................................................................................................................................                        | 34      |

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|   | 1. | Definitions.      For      the purposes of this Agreement: |
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