Boardwalk Announces Expansion of Its Fayetteville/Greenville Laterals and Other Regulatory Updates.

HOUSTON -- Boardwalk Pipeline Partners, LP (NYSE:BWP) announced that its Texas Gas Transmission, LLC subsidiary has entered into a binding precedent agreement with XTO Energy Inc. to transport 300 million cubic feet per day (MMcf/d) of gas on its Fayetteville and Greenville Expansion Project. The ten year firm transportation agreement will begin at 50 MMcf/d when the project is placed into service and will increase to 300 MMcf/d by 2012. Boardwalk Pipeline expects the first 60 miles of the Fayetteville Lateral to be in service during the third quarter 2008 and the remainder of the Fayetteville and Greenville Laterals to be in service during the first quarter 2009. Texas Gas will need approval from the Federal Energy Regulatory Commission to expand the capacity on this project from its current planned capacity of 800 MMcf/d to 1.2 billion cubic feet per day (Bcf/d).

Boardwalk Pipelines also announced that the anchor shipper on the Fayetteville and Greenville Expansion Project, Southwestern Energy Services Company (a subsidiary of Southwestern Energy Company), has exercised an option to increase its contractual commitments from 500 to 600 MMcf/d on the Fayetteville Lateral and from 400 MMcf/d to 480 MMcf/d on the Greenville Lateral, in each case effective as of April 1, 2010. These increases, combined with XTO's precedent agreement, increase the aggregate contractual commitments on the Fayetteville Expansion Project, after phase-in periods, to 975 MMcf/d, with additional options for 225 MMcf/d that can be exercised by various shippers over the next two years.

"These new commitments demonstrate the growth of natural gas production in the Fayetteville Shale," stated Brian Cody, Boardwalk Pipeline's Senior Vice President and Chief Commercial Officer. "We are excited about the addition of XTO as a customer for the Fayetteville and Greenville Project. We are also pleased that Southwestern Energy has chosen to exercise its option to meet its anticipated increased transportation needs on our new pipeline."

Boardwalk Pipeline also announced that it has received Final Environmental Impact Statements on the Fayetteville and Greenville Expansion Project and on its Gulf Crossing Pipeline Project and that it has received a special permit from the U.S. Department of Transportation for its East Texas to Mississippi Expansion Project allowing that pipeline to operate at higher pressures than under previous authorizations.

Boardwalk Pipeline Partners, LP is a master limited partnership engaged through its subsidiaries in the interstate transportation and storage of natural gas. Boardwalk Pipeline's interstate natural gas pipeline systems have approximately 13,550 miles of pipeline and underground storage fields with aggregate working gas capacity of approximately 155 Bcf.

This press release contains forward-looking statements relating to expectations, plans or prospects for Boardwalk Pipeline and its subsidiaries, including those relating to the completion by Boardwalk Pipeline of its pipeline expansion projects, including the cost and timing thereof, which Boardwalk Pipeline has stated previously are subject to significant risks, including the impact of scope changes, adverse weather conditions, delays in the receipt of regulatory approvals, and the continuing effects of the strong demand for and limited supply of qualified contractors, labor, materials and equipment as a result of the number of large, complex pipeline construction projects currently underway. These statements are based upon the current expectations and beliefs of management and are subject to certain risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. These and other risks and uncertainties concerning Boardwalk Pipeline and its expansion projects are described in its filings with the U.S. Securities and Exchange Commission, which are available on Boardwalk Pipeline's website at www.bwpmlp.com or on the SEC's website at www.sec.gov.