Northern Natural Gas Company                                                    Original Sheet No. 80
FERC Gas Tariff
Fifth Revised Volume No. 1

                                  NON-CONFORMING SERVICE AGREEMENTS


                                                     Agreement/
                                          Rate       Amendment        Date
    Name of Shipper/Agreement No.       Schedule       Date           Filed
    -----------------------------       --------     ---------        --------

    CenterPoint Energy Minnesota Gas      TFX        11/01/07         02/11/05
    (Contract No. 111461)

    CenterPoint Energy Minnesota Gas      TF         11/01/07         02/11/05
    (Contract No. 111463)

    CenterPoint Energy Minnesota Gas      TFX        11/01/07         02/11/05
    (Contract No. 111464)

    Black Hills Utility Holdings, Inc.    TFX        11/01/08         10/01/08
    (Contract No. 111169 As Amended)

LSP-Whitewater Limited Partnership Agreements:


    LSP-Whitewater Limited Partnership    FDD        01/01/05         09/13/05
    (Contract No. 23282)

    LSP-Whitewater Limited Partnership    TFX        01/01/05         09/13/05
    (Contract No. 23479)

    LSP-Whitewater Limited Partnership    TI         01/01/05         09/13/05
    (Contract No. 24201)

    LSP-Whitewater Limited Partnership    TI         01/01/05         09/13/05
    (Contract No. 24200)

LSP-Cottage Grove Limited Partnership Agreements:


    LSP-Cottage Grove, L.P.               TI         01/01/05         09/13/05
    (Contract No. 24199)

    LSP-Cottage Grove, L.P.               TI         01/01/05         09/13/05
    (Contract No. 24198)

    LSP-Cottage Grove, L.P.               FDD        01/01/05         09/13/05
    (Contract No. 23281)

    LSP-Cottage Grove, L.P.               TF         01/01/05         09/13/05
    (Contract No. 24042)

Metropolitan Utilities District:

    Contract 21385                        TF
      Amendment 35                                   01/25/05         04/29/05

    Contract 22298                        FDD
      Amendment 10                                   03/11/05         04/29/05




Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: January 15, 2009                                             Effective: February 15, 2009