Northern Natural Gas Company                                               First Revised Sheet No. 25
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                      Original Sheet No. 25










                           THIS SHEET CONTAINS A MAP



















































Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: July 16, 2010                                                  Effective: August 16, 2010