Atlas Pipeline Partners, L.P. Hosts Second Quarter 2004 Earnings Conference Call and Webcast.

PHILADELPHIA -- Atlas Pipeline Partners, L.P.(NYSE:APL) announces today that is will release its second quarter 2004 earnings after market hours on Wednesday, August 4, 2004 and invites investors and other interested parties to listen to the live webcast of its quarterly conference call on Thursday, August 5, 2004 at 8:30 a.m. EDT.

All interested parties can access the live webcast from the investor relations page of the Atlas Pipeline Partners website (www.atlaspipelinepartners.com). For those who cannot listen to the live broadcast, the replay of the webcast will be available following the call on the Atlas Pipeline Partners website and telephonically starting at 10:30 a.m. EDT, on Thursday, August 5, 2004 until midnight on Thursday, August 19, 2004 by dialing 888-286-8010 and passcode 20021758.

Atlas Pipeline Partners, L.P. owns and operates more approximately 3,200 miles of natural gas gathering pipelines in western Pennsylvania, western New York and eastern Ohio. The Partnership is paid a fee for the natural gas volumes that are gathered and transported through its pipeline system, based on the gross selling price of that gas, from approximately 4,600 wells that are currently connected to the system. For more information, go to our website at www.atlaspipelinepartners.com or contact [e-mail].