**Exhibit4.8**

**FULL RELEASE OF GUARANTEE**

THIS FULL RELEASE OF GUARANTEE (this “Release”) isdated as of July 31, 2006, by Wachovia Bank, National Association (formerlyknown as First Union National Bank), a national banking association, as trusteeunder the Indenture referred to below (in such capacity, the “Trustee”)in favor of Jonah Gas Gathering Company, a Wyoming general partnership (“JonahGas”).

RECITALS:

WHEREAS, TEPPCO Partners, L.P., a Delaware limitedpartnership (the “Partnership”), Jonah Gas and the other subsidiaryGuarantors named therein have heretofore executed and delivered to the Trusteean Indenture dated as of February 20, 2002 (as amended, supplemented, orotherwise modified from time to time, the “Indenture”), providing forthe Partnership’s issuance, from time to time, of its Debt Securities in one ormore series unlimited as to principal amount, and the guarantee by each of theSubsidiary Guarantors of the Debt Securities issued pursuant thereto; and

WHEREAS, Section 14.04 of the Indenture providesthat the Guarantee of a Subsidiary Guarantor shall be unconditionally releasedand discharged, upon the release or discharge of all guarantees by suchSubsidiary Guarantor of any Debt of the Partnership, other than obligationsarising under the Indenture and any Debt Securities issued thereunder,following delivery of a written notice of such release or discharged by the Partnershipto the Trustee, except a discharge or release by or as a result of paymentunder such guarantees; and

WHEREAS, Jonah Gas has guaranteed the obligations ofthe Partnership under that certain Amended and Restated Credit Agreement, datedas of October 21, 2004, as amended (the “Credit Agreement”), but JonahGas has not guaranteed any other Debt of the Partnership; and

WHEREAS, pursuant to a full Release of GuarantyObligations entered into on July 31, 2006 in favor of Jonah Gas, attachedhereto as Exhibit A, Jonah Gas has been released and discharged of itsguarantee obligation under the Credit Agreement; and

WHEREAS, the Partnership has requested that JonahGas be released as a Subsidiary Guarantor under the Indenture, including allindentures supplemental thereto and in accordance with Section 14.04 of theIndenture, the Partnership has delivered or caused to be delivered to theTrustee an Officers’ Certificate and Opinion of Counsel in respect of itsrequest.

NOW, THEREFORE, for good and valuable consideration,the sufficiency and receipt of all of which are acknowledged, the Trusteehereby fully releases and discharges Jonah Gas from all present and futureobligations which currently exist or may exist in the future under or inconnection with the Indenture, including all indentures supplemental theretoand all Debt Securities issued thereunder. Notwithstanding the ongoing, this is a release of Jonah Gas only, andnothing in this Release shall be construed to be a release of any othersubsidiary Guarantor or any obligations of the Partnership in connection withthe Indenture.

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THIS RELEASE SHALL BE GOVERNED BY, AND CONSTRUED INACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

**IN WITNESS WHEREOF**, the Trustee has caused this Release to beduly executed and delivered by a duly authorized officer as of the date firstabove written.
| ** ** | **WACHOVIA BANK, NATIONAL ASSOCIATION,** |
|------------|------------------------------------------|
|       | As Trustee                               |
|       |                                     |
|       |                                     |
|       | By:                                      | /s/ RONDA L. PARMAN |   |
|       | Name:                                    | Ronda L. Parman |
|       | Title:                                   | Vice President |
|            |                                          |  |  |  |

 

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