Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 05/01/2010, Docket: RP10-691-000, Status: Effective

Original Sheet No. 66B.41 Original Sheet No. 66B.41

101/ For the period 05/01/2010 through 09/30/2010, Shipper shall pay a total daily rate for the

contract MDQ equal to a base rate of $0.0500/DTH/day plus the arithmetic value obtained from the

formula [(X) times (Y) plus (A) times (B) times (C)] where (X) = The Midpoint price from "Gas

Daily" Northern, Demarc minus the Midpoint price from "Gas Daily" NGPL, Amarillo receipt minus

0.05 but in no event less than zero, (Y)= 0.05, (A) = The Midpoint price from "Gas Daily" at

Northern, Ventura minus the Midpoint price from "Gas Daily" Northern, Demarc but in no event less

than zero; (B) = The targeted % of primary to alternate (P to A) and alternate to primary (A to

P) volumes scheduled through Oakland for the Timely Nomination Cycle as posted for each gas day,

except in the event of another mainline group Allocation between Demarc and Ventura; and

(B) shall equal the greater of (i) the targeted % of P to A and A to P volumes scheduled through

the applicable mainline group(s) between Demarc and Ventura for the Timely Nomination Cycle for

each gas day or (ii) the % of actual volumes scheduled on this contract to the delivery points

included in the Oakland Allocation Group during the timely Nomination Cycle. The monthly rate

will be the sum of all daily rates from the formula above.

In addition to the above rate(s), Shipper shall provide any applicable fuel use and unaccounted

for.

The rate stated herein is applicable to the receipt and (or) delivery points (POI) listed below.

Shipper agrees that if any other receipt or delivery points are used either on a primary or

alternate basis, the rates set forth herein will not be applicable and Shipper shall pay the

higher of the rate set forth above or Northern's maximum tariff rates for the entire contract MDQ

on any day that any points not listed below are used.

Primary Receipt Points: TBPL/NNG Beatrice Primary Delivery Points: NNG Field/MKT Demarcation

Alternate Delivery Points: Demarc Deferred Delivery Point and all delivery points subject to the

Oakland Allocation.