Company Website: http://www.williamslp.com
TULSA, Okla. -- (Business Wire)

Transcontinental Gas Pipe Line Company, LLC, a wholly owned subsidiary of Williams Partners L.P. (NYSE: WPZ), announced today that it has extended its offer to exchange all of its privately placed outstanding 5.40% Senior Notes due 2041 until 5 p.m. New York City time on Wednesday, March 28, 2012. The offer was previously scheduled to expire at 5 p.m. New York City time on March 23, 2012.

As of 5:00 p.m. New York City time on Friday, March 23, 2012, holders of $374,310,000 aggregate principal amount of the outstanding 5.40% Senior Notes due 2041 (constituting approximately 99.8% of the principal amount of such outstanding notes), have delivered valid tenders or notices of guaranteed delivery pursuant to the offer. Except as set forth herein, the terms and conditions of the offer remain unchanged. Transco may further extend the expiration date of the offer in its sole discretion.

The offer is being made pursuant to a prospectus dated Feb. 24, 2012. Copies of the exchange offer prospectus and related transmittal materials governing the exchange offer are available from the exchange agent for the offer, The Bank of New York Mellon Trust Company, N.A., at:

Bank of New York Mellon Corporation

Corporate Trust Operations

Reorganization Unit

101 Barclay Street - 7 East

New York, New York 10286

Attention: William T. Buckley

(212) 815-5788

This press release does not constitute an offer to sell or solicitation of an offer to buy such securities.

This press release may include “forward-looking statements” as defined by federal law. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that Transco expects, believes or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions made by Transco based on its experience and perception of historical trends, current conditions, expected future developments and other factors it believes are appropriate in the circumstances. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of Transco, which may cause its actual results to differ materially from those implied or expressed by the forward-looking statements. Additional information about issues that could lead to material changes in performance is contained in Transco’s annual and quarterly reports filed with the Securities and Exchange Commission.

Contacts:

Williams Partners L.P.
Media Contact:
Jeff Pounds, 918-573-3332
or
Investor Contact:
Sharna Reingold, 918-573-2078

Source: Williams Partners L.P.