MIGC LLC

Second Revised Volume No. 1

Effective Date: 08/01/2008, Docket: RP08-432-000, Status: Effective

First Revised Sheet No. 2 First Revised Sheet No. 2

Superseding: Original Sheet No. 2

PRELIMINARY STATEMENT

This Tariff Second Revised Volume No. 1 applies to the transportation of

natural gas performed by MIGC LLC (MIGC). MIGC is a limited liability company

organized under the laws of the State of Delaware. MIGC is authorized to do,

and is doing, business in the state of Wyoming. This Tariff contains the

Rates and Charges, Rate Schedules, Forms of Service Agreement and the General

Terms and Conditions applicable to transportation of natural gas in interstate

commerce and other associated services performed by MIGC for which

authorization is granted by and subject to the jurisdiction of the Federal

Energy Regulatory Commission under the Natural Gas Act.

MIGC's pipeline system, located in the Powder River Basin of Wyoming, is

connected to Colorado Interstate Gas Company's, Wyoming Interstate Company,

Ltd's, and Kinder Morgan Interstate Gas Transmission, LLC's main line pipeline

systems in the southeastern portion of the State of Wyoming, to Williston

Basin Interstate Pipeline's system in the far northeastern portion of the

State of Wyoming, and to MGTC, Inc.'s intrastate pipeline system in the north

central portion of the State of Wyoming. MIGC's system is basically divided

into a north half, which operates within a pressure range of 600 to 700 psig

and a south half, which operates within a pressure range of 900 to 1000 psig.