Pioneer Natural Resources

The Notes were originally issued on March 10, 2004 by Evergreen Resources, Inc., and approximately $6.1 million of aggregate principal amount remain outstanding.

On and after the date of redemption, the Notes will no longer be deemed outstanding, interest will cease to accrue thereon and all rights of the holder of the Notes will cease to exist, except for the right to receive the redemption price, without interest thereon.

The notice of redemption will be sent to registered holders of the Notes on or aboutJanuary 21, 2010. Notes are to be surrendered to U.S. Bank National Association, as trustee and paying agent, in exchange for payment of the redemption price. Questions relating to, and requests for additional copies of, the notice of redemption should be directed to U.S. Bank Corporate Trust Services at 14241 Dallas Parkway, Suite 490, Dallas, Texas 75254, Attn: Israel Lugo, (972) 458-4505.

Pioneer is a large independent oil and gas exploration and production company, headquartered in Dallas, Texas, with operations primarily in the United States. For more information, visit Pioneer's website at http://cts.businesswire.com/ct/CT?id=smartlink&url=http%3A%2F%2Fwww.pioneernrc.com&esheet=6150583&lan=en_US&anchor=www.pxd.com&index=1&md5=8f51d4e607a3014c54105e4d50e66908.

SOURCE: Pioneer Natural Resources Company

Pioneer Natural Resources
Investors
Frank Hopkins, 972-969-4065
or
Matt Gallagher, 972-969-4017
or
Nolan Badders, 972-969-3955
or
Media and Public Affairs
Susan Spratlen, 972-969-4018
or
Suzanne Hicks, 972-969-4020