Common Contracts

and THE BANK OF NEW YORK, AS TRUSTEE

First Supplemental Indenture • May 8th, 2002 • Southwestern Electric Power Co • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  May 8th, 2002
• Company
  Southwestern Electric Power Co
• Industry
  Electric services
• Jurisdiction
  New York

and

First Supplemental Indenture • March 30th, 2001 • Public Service Co of Oklahoma • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  March 30th, 2001
• Company
  Public Service Co of Oklahoma
• Industry
  Electric services
• Jurisdiction
  New York

AND

First Supplemental Indenture • April 16th, 1999 • Equistar Funding Corp • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 16th, 1999
• Company
  Equistar Funding Corp
• Jurisdiction
  New York

ARTICLE 1 TERMS

First Supplemental Indenture • May 15th, 1998 • Amb Property Ii Lp • New York

• Contract Type
  First Supplemental Indenture
• Filed
  May 15th, 1998
• Company
  Amb Property Ii Lp
• Jurisdiction
  New York