ARC Resources Ltd./ARC Energy Trust Announce the June 2008 increase to the ARX Exchangeable Shares Exchange Ratio

Mon Jun 2, 4:01 PM

CALGARY, June 2 /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 2.34894 to 2.36758. Such increase will be effective on June 16, 2008. The following are the details on the calculation of the exchange ratio:

    
    -------------------------------------------------------------------------
                                  10 day
                                  weighted
                                  average
    Record                        trading                Effective
    date of             ARC       price of               date of
    ARC                 Energy    AET.UN                 the        Exchange
    Energy              Trust     (prior to  Increase    increase   ratio as
    Trust     Opening   distrib-  the end    in          in         of
    distrib-  exchange  ution     of the     exchange    exchange   effective
    ution     ratio     per unit  month)     ratio (xx)  ratio      date
    -------------------------------------------------------------------------
    May 31,   2.34894   $0.24     $30.2471   0.01864     June 16,   2.36758
    2008                                                 2008
    -------------------------------------------------------------------------

    (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,

President and Chief Executive Officer

Contacts

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