EXHIBIT 10.15

Except from the Purchase and Sale Agreement dated January 29, 1990
by and between Atlantic Richfield Corporation and Stream Energy, Inc.

10.4  Indemnification
      ---------------

(a)   To the fullest extent permitted by law, but no further, ARCO shall
      defend, indemnify and hold harmless Purchaser and its affiliates, as
      defined below, and their officers, directors, employees, attorneys and
      agents from any and all losses, liabilities, liens, encumbrances,
      damages, judgments, demands, suits, claims, assessments, charges, fines,
      penalties, or expenses (including but not limited to attorney fees, other
      costs of litigation, liability for environmental harm or damages to
      natural resources, and costs of complying with orders or directives of
      government entities and agencies) of any kind or character (hereinafter
      the "Claim") arising out of, in connection with, or resulting from its
      ownership of rights, interests and obligations in,  under and related to
      the Assets and Interests which arise from events which occurred prior to
      the Closing Date and regardless of when the Claim is asserted.  Such
      indemnification shall apply even though the Claim arises from or is
      caused by the concurrent and/or contributory negligence (whether active
      or passive of any kind or nature) or fault of Purchaser, but shall not
      apply if caused by the sole negligence of Purchaser.

(b)   To the fullest extend permitted by law, but no further, Purchaser shall
      defend, indemnify and hold harmless ARCO and its affiliates, as defined
      below, and their officers, directors, employees, attorneys and agents
      from any and all losses, liabilities, liens, encumbrances, damages,
      judgments, demands, suits, claims, assessments, charges, fines,
      penalties, or expenses (including but not limited to attorney fees,
      other costs of litigation, liability for environmental harm or damages
      to natural resources, and costs of complying with orders or directives
      of government entities and agencies) of any kind or character
      (hereinafter the "Claim" arising out of, in connection with, or
      resulting from its ownership of rights, interests and obligations in,
      under and related to the Assets and Interests which arise from events
      which occur after the Closing Date and regardless of when the Claim is
      asserted.  Such indemnification shall apply even though the Claim arises
      from or is caused by the concurrent and/or contributory negligence
      (whether active or passive or of any kind or nature) or fault of ARCO but
      shall not apply if caused by the sole negligence of ARCO.

(c)   For the purposes of this Agreement and this Section, "Asserted" means
      that the claim is filed as a complaint in a court of competent
      jurisdiction.