Exhibit 10(b)

(For Use Under Rate Schedule FT-A or FT-G )

THIS AGREEMENT is made and entered into as of the lst day of November, 1999, by and between MIDWESTERN GAS TRANSMISSION COMPANY, a Delaware Corporation, hereinafter referred to as "Transporter" and PEOPLES GAS LIGHT & COKE CO., an Illinois Corporation, hereinafter referred to as "Shipper." Transporter and Shipper shall be collectively referred to as "Parties."

WITNESSETH:

That, in consideration of the premises and of the mutual agreements herein contained, Transporter and Shipper agree as follows:

ARTICLE I - DEFINITIONS

The definitions found in Article 1 of Transporter's General Terms and Conditions are incorporated herein by reference.

ARTICLE II - TRANSPORTATION

Transportation Service - Transporter agrees to accept and receive daily, on a firm basis, at Eligible Receipt Point(s), from Shipper or for Shipper's account such quantity of gas as Shipper makes available up to the Transportation Quantity and deliver to or for the account of Shipper to authorized Delivery Point(s) an equivalent quantity of gas.

ARTICLE III - POINTS OF RECEIPT AND DELIVERY

AND ASSOCIATED PRESSURES

1

(For Use Under Rate Schedule FT-A or FT-G )

ARTICLE IV - FACILITIES

All facilities are in place to render the service provided for in this Agreement.

or

(If facilities are contemplated to be constructed, a brief description of the facilities will be included, as well as who is to construct, own and/or operate such facilities.)

ARTICLE V - QUALITY SPECIFICATIONS AND STANDARDS FOR MEASUREMENTS

For all gas received, transported, and delivered hereunder, the Parties agree to the quality specifications and standards for measurement as provided for in the General Terms and Conditions of Transporter's FERC Gas Tariff. Transporter shall be responsible for the operation of measurement facilities at the Delivery Point(s) and at the Receipt Point (s). In the event that measurement facilities are not operated by Transporter, then the responsibility for operations shall be deemed to be that of the Balanc

ARTICLE VI - RATES F0R SERVICE

2

(For Use Under Rate Schedule FT-A or FT-G )

ARTICLE VII - RESPONSIBILITY DURING TRANSPORTATION

As between the Parties hereto, it is agreed that from the time gas is delivered by Shipper to Transporter at the Receipt Point(s) and prior to delivery of such gas to or for the account of Shipper at the Delivery Point(s), Transporter shall have the unqualified right to commingle such gas with other gas in its system and shall have the unqualified right to handle and treat such gas as its own.

ARTICLE VIII - BILLINGS AND PAYMENTS

Billings and payments under this Agreement shall be in accordance with the terms and conditions of Transporter's FERC Gas Tariff as such Tariff may be revised or replaced from time to time.

ARTICLE IX - RATE SCHEDULES AND

GENERAL TERMS AND CONDITIONS

This Agreement and all terms and provisions contained or incorporated herein are subject to the effective provisions of Transporter's applicable Rate Schedule (s) as set forth on Exhibit A and Transporter's General Terms and Conditions on file with the FERC, or other duly constituted authorities having jurisdiction, as the same may be changed or superseded from time to time in accordance with the rules and regulations of the FERC, which Rate Schedule(s) and General Terms and Conditions are incorporated by reference. To the extent a term or condition set forth in this Contract is inconsistent with the General Terms and Conditions shall govern. Furthermore, to the extent a term or condition set forth in this Contract is inconsistent with the applciable Rate Schedule, the Rate Schedule shall govern unless the relevant provision is inconsistent with General Terms and Conditions.

ARTICLE X - REGULATION