HOUSTON, TEXAS, June 28, 2001—Colorado Interstate Gas, a subsidiary of El Paso Corporation (NYSE:EPG), announced today an open season that began at 5:00 p.m. Mountain Time on June 26, 2001 and will continue until 5:00 p.m. Mountain Time on July 20, 2001 for a pipeline project to transport gas from the Cheyenne Hub in northeastern Colorado to mid-continent pipeline markets near Greensburg, Kansas.  Colorado Interstate Gas proposes to construct 380 miles of 30-inch diameter pipeline and 17,000 horsepower of compression, designed to transport up to 540,000 dekatherms per day.

The project accesses all the Rocky Mountain supply basins via its pipeline affiliates Colorado Interstate Gas and Wyoming Interstate Company at the Cheyenne Hub.  The company has planned interconnects near Greensburg with ANR, Panhandle Pipeline, Northern Natural Gas, Natural Gas Pipeline Company, and Williams with an estimated take-away capacity of approximately 6.8 billion cubic feet per day.  The pipeline will be routed by Colorado Interstate Gas's market area storage in the Fort Morgan area.  Access to the Front Range markets could also be provided if there is sufficient interest.  Colorado Interstate Gas has completed the environmental, archeological, and right-of-way survey work required for a Federal Energy Regulatory Commission filing to be completed in October and anticipates this new pipeline project will be in service in late 2003.  Customers interested in the project are invited to submit an offer for firm transportation.  Please contact Craig Coombs at 719-520-4387 or Laine Lobban at 719-520-4344 for additional information.

El Paso Corporation is committed to meeting energy needs throughout North America and the world with operations that span the energy value chain from wellhead to electron. The company is focused on speeding the development of new technologies, such as clean coal and liquefied natural gas, to address critical energy shortages across the globe.  Visit El Paso at www.elpaso.com.

This release includes forward-looking statements and projections, made in reliance on the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The company has made every reasonable effort to ensure that the information and assumptions on which these statements and projections are based are current, reasonable, and complete. However, a variety of factors could cause actual results to differ materially from the projections, anticipated results or other expectations expressed in this release. While the company makes these statements and projections in good faith, neither the company nor its management can guarantee that the anticipated future results will be achieved. Reference should be made to the company's (and its affiliates') Securities and Exchange Commission filings for additional important factors that may affect actual results.