ARC Resources Ltd. / ARC Energy Trust Announce the June 2009 increase to the ARX Exchangeable Shares Exchange Ratio

Jun 30, 2009

CALGARY, June 30 /CNW/ - (AET.UN and ARX - TSX) ARC Resources Ltd. along
with ARC Energy Trust announces the increase to the exchange ratio of the
exchangeable shares of the corporation from 2.63365 to 2.64889. Such increase
will be effective on July 15, 2009.

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The following are the details on the calculation of the exchange ratio:

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10 day
weighted Effective
Record ARC average date of
date of Energy trading Increase the Exchange
ARC Energy Trust price of in increase ratio
Trust Opening distrib- AET.UN (prior exchange in as of
distrib- exchange ution to the end ratio exchange effective
ution ratio per unit of the month) (xx) ratio date
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June 30, July 15,
2009 2.63365 $0.10 $17.2779 0.01524 2009 2.64889
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(xx) The increase in the exchange ratio is calculated by dividing the ARC
Energy Trust distribution per unit by the 10 day weighted average
trading price of AET.UN and multiplying by the opening exchange
ratio.

A holder of ARC Resources Ltd. exchangeable shares can exchange all or a
portion of their holdings at any time by giving notice to their investment
advisor or Computershare Investor Services at its principal transfer office in
Suite 600, 530 - 8th Avenue SW, Calgary, Alberta, T2P 3S8, their telephone
number is 1-800-564-6253 and their website is www.computershare.com.

ARC RESOURCES LTD.
John P. Dielwart,
Chief Executive Officer
>>

For further information: about ARC Energy Trust, please visit our website www.arcenergytrust.com or contact: Investor Relations, E-mail: ir@arcresources.com, Telephone: (403) 503-8600, Fax: (403) 509-6417, Toll Free 1-888-272-4900, ARC Resources Ltd., 2100, 440 - 2nd Avenue S.W., Calgary, AB, T2P 5E9