HOUSTON, Dec. 28 /PRNewswire-FirstCall/ -- Colorado Interstate Gas Company (CIG), a majority owned subsidiary of El Paso Corporation (NYSE: EP), announced the expiration and final results of its previously announced cash tender offer to purchase up to $125 million aggregate principal amount of its 5.95-percent Senior Notes due March 15, 2015 (CUSIP No. 196522AH9). The tender offer expired at 12:00 midnight, Eastern Time, on December 27, 2007. $183,525,000 in aggregate principal amount of notes were validly tendered in the tender offer. Because this amount exceeded the tender cap of $125 million, the amount of notes accepted for purchase was prorated among tendering holders in accordance with the terms of the Offer to Purchase dated November 29, 2007. The proration factor applied was approximately 68.1-percent (rounded down to the nearest $1,000 of principal amount for each tendering holder). CIG expects settlement of the tender offer to occur today.

Merrill Lynch & Co. and J.P. Morgan Securities Inc. served as the dealer managers for the tender offer and Global Bondholders Services Corporation served as the depositary and information agent for the tender offer.

CIG is a Delaware general partnership, originally formed as a corporation in 1927, and a majority owned subsidiary of El Paso Corporation. Its primary business consists of the interstate transportation, storage and processing of natural gas. CIG conducts its business activities through its Colorado Interstate gas system, its 50% equity interest in WYCO Development LLC, and gas storage and processing facilities.

El Paso Corporation provides natural gas and related energy products in a safe, efficient, dependable manner. El Paso Corporation owns North America's largest interstate natural gas pipeline system and one of North America's largest independent natural gas producers. For more information, visit http://www.elpaso.com.

Cautionary Statement Regarding Forward-Looking Statements

This release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All forward-looking statements are based on assumptions that CIG believes to be reasonable. However, actual results almost always vary from assumed facts and the differences can be material, depending upon the circumstances. As a result, you should not place undue reliance on such forward-looking statements. The words "believe," "expect," "estimate," "anticipate" and similar expressions will generally identify forward-looking statements. All of CIG 's forward-looking statements, whether written or oral, are expressly qualified by these cautionary statements and any other cautionary statements that may accompany such forward-looking statements. In addition, CIG disclaims any obligation to update any forward-looking statements to reflect events or circumstances after the date of this release.

With this in mind, you should consider the risks discussed in the Offer to Purchase, under the caption "Risk Factors" in CIG's Annual and Quarterly Reports on Forms 10-K and 10-Q and in the other documents CIG files with the SEC from time to time, which could cause actual results to differ materially from those expressed in any forward-looking statement made by CIG or on CIG's behalf.

SOURCE: El Paso Corporation, 12/28/2007

CONTACT:
Investor-Media Relations:
Bruce L. Connery, Vice President,
+1-713-420-5855, fax, +1-713-420-4417,
or
Media Relations:
Bill Baerg, Manager
+1-713-420-2906, fax, +1-713-420-4417
both of El Paso Corporation
Web site: http://www.elpaso.com
(EP)