OPEN SEASON - EXPANSION CAPACITY

Firm Capacity Available From MIGC

MIGC, Inc. is planning to expand its mainline capacity from 130,000 Mcf per day to 
175,000 Mcf per day on a sustainable peak day firm basis on the southern end of 
its system, through the addition of compression.

MIGC has executed a Precedent Agreement for Firm Transportation Service on MIGC, Inc. (PA)
with Anadarko Energy Services, Inc. (AESC) for this expansion capacity of 45,000 MMBtu per day.

MIGC will file a prior notice application pursuant to its blanket certificate with FERC 
no later than April 15, 2007 for approval to construct this new compressor station.  If
MIGC does not secure all necessary permits, regulatory approvals, or site lease agreements
in a form acceptable to MIGC by July 1, 2007, MIGC may terminate the PA and not move forward 
with the expansion.  AESC may terminate the PA if MIGC has not commenced construction of the
compression by August 1, 2007.



The following outlines the terms of the Precedent Agreement for this capacity:

Type of Service:	 Firm
Effective Date:          Date compression expansion is placed in service.
                         The compression is anticipated to be completed by August 31, 2007;
                         however, no warranty or representation is made regarding such date.
End Date:                Five (5) years from the Effective Date, with rights of first refusal
                         as outlined in MIGC's Tariff.
Transportation Contract Demand: 45,000 MMBtu per day
Primary Receipt Point:   Little Thunder - 45,000 MMBtu per day
Primary Delivery Point:  CIG Powder River - 33,500 MMBtu per day, KMI Glenrock - 11,500 MMbtu 
                         per day
Rate:                 	 $4.4317 Monthly Reservation Charge, Maximum Commodity Rate as set forth
                         on MIGC's FTS-1 Rate Schedule, and the Fuel Reimbursement Charge as
                         specified on MIGC's Tariff Sheet No. 6*.

*MIGC has agreed that it will file, no later than August 1, 2007, an application with FERC to 
revise its fuel retention and loss percentage factors in MIGC’s Tariff to create a category for 
fuel use greater than or equal to 350 psig south of the Hilight receipt point on its system, and 
a category for fuel use greater than or equal to 350 psig north of and including the Hilight 
receipt point on its system.  These categories will replace the existing category for fuel use 
greater than or equal to 350 psig on MIGC’s system.  If FERC rejects MIGC’s application request 
for a fuel category change, or requires modifications unacceptable to MIGC or AESC, MIGC shall 
have no obligation to pursue any other fuel change with FERC, and AESC expressly agrees that it 
will pay the applicable fuel rates as approved by FERC and stated in MIGC’s Tariff.
                         

Bid Due Date: Thursday, April 5, 2007


Parties interested in bidding in this Open Season should submit bid(s) to MIGC by 5 P.M. MCT 
on April 5, 2007.  Bids should include the price, term, amount of capacity desired, primary 
receipt and delivery points, and should be faxed to the attention of Nancy Garfield, Senior 
Commercial Development Rep at 720-264-0467. The bid rate must be presented as the demand rate per 
MMBtu/month or stated as the maximum tariff rate. The Maximum Commodity Rate, ACA, Fuel, Lost and 
Unaccounted-For, and any other authorized surcharges, if any, will be in addition to Shipper's
bid rate. 

MIGC will evaluate all Open Season bids based on a net present value calculation based on 
rate, term and quantity to determine the highest economic value to MIGC.  AESC will then have
until 5 P.M. MCT on Tuesday, April 10, 2007 to match any bids that are of a higher economic
value than the economic terms outlined in the PA.  If AESC does not match any such bid by April
10, 2007, the bidder with the highest economic value will be awarded the capacity.  AESC or 
the winning bidder shall execute a Transportation Service Agreement in the form presented
in MIGC's Tariff within ten (10) calendar days following such award.

Winning bidders will be notified by 5:00 p.m., MCT,  April 11, 2007.

Shipper must provide evidence of creditworthiness in a manner satisfactory to MIGC 
as provided for in the MIGC, Inc. FERC Gas Tariff.  Satisfactory evidence of creditworthiness 
may include past transactions with MIGC, a satisfactory review of the financial status of 
the Shipper by MIGC, a Letter of Credit, or similar good and sufficient security.

MIGC reserves the right to reject any bid not at the maximum rate. 

Please contact Nancy Garfield at (303) 252-6186 for additional information or questions
concerning this Open Season.