Northern Natural Gas Company                                           First Revised Sheet No. 66B.23
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                  Original Sheet No. 66B.23





                                  SHEET NO. 66B.23 IS RESERVED FOR FUTURE USE
 























































Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: June 30, 2009                                                     Effective: July 1, 2009