Northern Natural Gas

Monthly Index Price dates for remainder of 2012
Production Month	Final MIPs Rates*
October 2012	November 5, 2012
November 2012	December 10, 2012
December 2012	January 7, 2013
January 2013	February 4, 2013
February 2013	March 11, 2013
March 2013	April 8, 2013
April 2013	May 6, 2013
May 2013	June 10, 2013
June 2013	July 8, 2013
July 8, 2013	August 5, 2013
August 2013	September 9, 2013
September 2013	October 7, 2013
October 2013	November 4, 2013
November 2013	December 9, 2013
December 2013	January 6, 2014

* Billing invoices and statements will reflect the Final MIPs rates the following day.

Weekly MIPs rates are posted on Mondays (or the next business day following a holiday)

Pursuant to the tariff, “Monthly Index Prices will be determined using a five-week period. The five-week period is defined as beginning on the first Tuesday of the calendar month for which the MIP is being established and ending on the first or second Monday of the following month, whichever is applicable, to arrive at a five-week period.” (See Tariff page 267, Section 32 Balancing)

In addition to the posted rates shown in this section, tariff rates may be found in the NNG tariff.