Northern Natural Gas Company                                          Second Revised Sheet No. 66B.21
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                             First Revised Sheet No. 66B.21

 




                             SHEET NO. 66B.21 IS RESERVED FOR FUTURE USE





 
 
















































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