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

    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.

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

                                      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
    June 30,                                              July 15,
     2009      2.63365   $0.10      $17.2779     0.01524   2009      2.64889

    (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

    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

    ARC RE

SOURCES LTD. John P. Dielwart, Chief Executive Officer

For further information:

For further information: about ARC Energy Trust, please visit our
website or contact: Investor Relations, E-mail:, 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

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