Attached please find the above-referenced documents.  We are supplementing
our initial responses by adding additional workpapers in response to data
requests 8, 9, 10 and 12 and by responding to data requests 15 and 16 with
respect to Dr. Carolyn A. Berry.

 <<Cover for supplemental response.doc>>  <<Supplemental Responses to
Duke.doc>>  <<Calculator_MCP.zip>>  <<Testimony and Papers List.doc>>
<<economic note1.doc>>  <<Infocast congestion speech.rtf>>

Carol Gosain
Steptoe & Johnson LLP
1330 Connecticut Avenue, N.W.
Washington, D.C.  20036
Phone:  (202) 429-6461
Fax:  (202) 429-3902
cgosain@steptoe.com



 - Cover for supplemental response.doc 
 - Supplemental Responses to Duke.doc 
 - Calculator_MCP.zip 
 - Affidavits.doc 
 - economic note1.doc 
 - Infocast congestion speech.rtf