TULSA, Okla., June 24 /PRNewswire-FirstCall/ -- Williams Pipeline Partners L.P. (NYSE:WMZ) plans to report its second-quarter 2009 financial results before the market opens on Thursday, Aug. 6. Management will discuss the results during a live webcast at 12 p.m. EDT the same day. Participants are encouraged to access the webcast at http://www.williamspipelinepartners.com/. Slides will be available for viewing, downloading and printing on the morning of Aug. 6. A limited number of phone lines also will be available at (877) 852-6578. International callers should dial (719) 325-4820. Replays of the second-quarter webcast, in both streaming and downloadable podcast formats, will be available for two weeks at http://www.williamspipelinepartners.com/ following the event. About Williams Pipeline Partners L.P. (NYSE:WMZ) Williams Pipeline Partners is a publicly traded master limited partnership that owns and operates natural gas transportation and storage assets. The general partner of Williams Pipeline Partners is Williams Pipeline GP LLC, which is a wholly owned subsidiary of Williams (NYSE:WMB). For more information, please visit http://www.williamspipelinepartners.com/. Go to http://www.b2i.us/irpass.asp?BzID=1589&to=ea&s=0 to join our e-mail list. Contact: Jeff Pounds Williams (media relations) (918) 573-3332 Sharna Reingold Williams (investor relations) (918) 573-2078 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 the Partnership expects, believes or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions made by the Partnership 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 the Partnership, which may cause our 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 the Partnership's Form S-1 filed with the Securities and Exchange Commission. DATASOURCE: Williams Pipeline Partners L.P. CONTACT: Jeff Pounds, media relations, +1-918-573-3332, or Sharna Reingold, investor relations, +1-918-573-2078, both of Williams Web Site: http://www.williamspipelinepartners.com/

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