Northern Natural Gas Company                                               12 Revised Sheet No.263H.1
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                11 Revised Sheet No. 263H.1



                                                          SCHEDULE NO. 1A

                          NORTHERN NATURAL GAS COMPANY
                         MARKET AREA ENTITLEMENT - 1996
                   CARLTON VOLUMES SUBJECT TO FLOW OBLIGATIONS
                          FOR 2009/2010 HEATING SEASON

                                              Market
                                              Area            "Sourcer"                     Total
                                              Adjusted         New Carlton    Other         Carlton
                                              Peak Day         Resolution     Carlton       Flow
    Company                                   Entitlement      Obligation     Obligation    Obligation

    Madison Gas and Electric Company            56,219           4,510                          4,510
    Metropolitan Utilities District            179,500          14,403                         14,403
    MidAmerican Energy Co.                      10,000             802                            802
    MidAmerican Energy Company                 390,119          31,303                         31,303
    Midwest Natural Gas, Inc.                   13,839           1,110                          1,110
    Minnesota Energy Resources Corporation     146,260          11,736                         11,736
    Minnesota Mining & Manufacturing Co            400              32                             32
    National Public Gas Agency                     900              71                             71
    Nicor Gas Company                          186,058          14,931                         14,931
    Northern States Power Company-MN           361,740          29,025           2,402         31,427
    Northern States Power Company-WI            62,970           5,053           1,585          6,638
    Northwest Natural Gas Company                2,675             215                            215
    Northwestern Corporation                    49,283           3,955                          3,955
    Osage Municipal Utilities                    1,500             120                            120
    Rock County Electric Cooperative Assoc.      2,480             199                            199
    Semco Energy Gas Company                    45,917           3,684                          3,684
    Sheehan's Gas Company                        1,584             127                            127
    SourceGas Distribution, LLC                    292              23                             23
    St. Croix Valley Natural Gas                 6,839             549              57            606
    Superior Water, Light & Power                    0               0             218            218
    Terra Nitrogen Corporation                  27,000           2,167                          2,167
    Town of Sabula                                 368              30                             30
    U.S. Energy Services                         2,650             213                            213
    U.S. Gypsum                                      0               0             485            485
    United States Steel Corporation                  0               0             448            448
    Viroqua Gas Company                          2,389             192                            192
    Wisconsin Gas, LLC                         109,050           8,750           1,138          9,888
    Wisconsin Power and Light Company           67,576           5,423                          5,423

    Entitlement of Sourcers that left           22,473                             995
    Northern's System

    TOTAL UNITS                              3,115,573         246,957          12,123        258,085

    Note:  Reflects obligation after Appendix B customers' election to source or buyout.










Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: August 12, 2009                                               Effective: November 1, 2009