Atlas Energy Resources, LLC Raises over $200 Million in 2008 Year End Drilling Program

PITTSBURGH--(Business Wire)--
Atlas Energy Resources, LLC (NYSE: ATN) ("Atlas Energy") announces that ithas
completed the sale of its year end drilling program with subscriptions for
$201,551,000 in investor capital. This represents a 23.3% increase from the 2007
year end program, which raised $163,459,000. Atlas Energy raised $437,992,000 in
new investor drilling funds during calendar 2008, which was an increase of
approximately $74.5 million, or 20.5%, compared with funds raised in 2007.
Drilling for the current program commenced in late November 2008.

Atlas Energy`s subsidiary serves as managing general partner of the partnership.

Atlas Energy Resources, LLC develops and produces domestic natural gas and to a
lesser extent, oil. Atlas Energy is one of the largest independent energy
producers in the Eastern United States. Atlas Energy sponsors and manages
tax-advantaged investment partnerships, in which it co-invests, to finance the
development of its acreage. For more information, visit Atlas Energy`s website
at www.atlasenergyresources.com or contact Investor Relations at
bbegley@atlasamerica.com.

Atlas America, Inc. (NASDAQ:ATLS) owns an approximate 46% common unit interest
and all of the Class A and management incentive interests in Atlas Energy
Resources, a 2% direct ownership interest in Atlas Pipeline Partners, L.P.
(NYSE:APL), and a 64% limited partner interest in Atlas Pipeline Holdings, L.P.
(NYSE:AHD), which holds the general partner interest and approximately 5.8
million limited partner units of Atlas Pipeline Partners, L.P. For more
information, please visit our website at www.atlasamerica.com, or contact
Investor Relations at bbegley@atlasamerica.com.

Atlas Pipeline Holdings, L.P. (NYSE:AHD) is a limited partnership which owns and
operates the general partner of Atlas Pipeline Partners, L.P., through which it
owns a 2% general partner interest, all the incentive distribution rights and
approximately 5.8 million common units of Atlas Pipeline Partners.

Atlas Pipeline Partners, L.P. (NYSE:APL) is active in the transmission,
gathering and processing segments of the midstream natural gas industry. In the
Mid-Continent region of Oklahoma, Arkansas, southern Kansas and northern and
western Texas and the Texas panhandle, the Partnership owns and operates eight
active gas processing plants and a treating facility, as well as approximately
7,900 miles of active intrastate gas gathering pipeline and a 565-mile
interstate natural gas pipeline. In Appalachia, it owns and operates
approximately 1,600 miles of natural gas gathering pipelines in western
Pennsylvania, western New York, eastern Ohio and northeastern Tennessee. For
more information, visit Atlas Pipeline`s website at
www.atlaspipelinepartners.com or contact bbegley@atlaspipelinepartners.com.

Certain matters discussed within this press release are forward-looking
statements.Although Atlas Energy Resources, LLC believes the expectations
reflected in such forward-looking statements are based on reasonable
assumptions, it can give no assurance that its expectations will be
attained.Factors that could cause actual results to differ materially from
expectations include financial performance, regulatory changes, changes in local
or national economic conditions and other risks detailed from time to time in
Atlas Energy`s reports filed with the SEC, including quarterly reports on Form
10-Q, reports on Form 8-K and annual reports on Form 10-K.

Brian Begley
Investor Relations
Atlas Energy Resources, LLC
215-546-5005
215-553-8455 (fax)

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