Exhibit 10(f)

|Date: March 19, 2003 | Contract No.: 109011
|-------------------- | --------------------



ETS SERVICE AGREEMENT



This AGREEMENT is entered into by ANR PIPELINE COMPANY (Transporter) and THE PEOPLES GAS LIGHT & COKE COMPANY (Shipper).

WHEREAS, Shipper has requested Transporter to transport Gas on its behalf and Transporter represents that it is willing to transport Gas under the terms and conditions of this Agreement.

NOW, THEREFORE, Transporter and Shipper agree that the terms below, together with the terms and conditions of Transporter's applicable Rate Schedule and General Terms and Conditions of Transporter's FERC Gas Tariff constitute the transportation service to be provided and the rights and obligations of Shipper and Transporter.

1. AUTHORITY FOR TRANSPORTATION SERVICE:
2. RATE SCHEDULE: Enhanced Transportation Service (ETS)
3. CONTRACT QUANTITIES:

Primary Route - See Exhibit attached hereto.

Such Contract Quantities shall be reduced for scheduling purposes, but not for billing purposes, by the Contract Quantities that Shipper has released through Transporter's capacity release program for the period of any release.

Shipper desires to maintain the MDQ delivered to the city gate from storage in the event of a change in Transporter's Use %. Therefore, subject to available capacity, if Transporter's Use %, as stated in Transporter's FERC Gas Tariff changes, Transporter shall make corresponding changes to: (a) the MSQ, Base MDWQ and Base MDIQ of Shipper's FSS Agreement; and (b) the MDQ associated with the injection route(s) of the transport agreement corresponding to such FSS Agreement. Shipper authorizes transporter make such quantity changes without formal amendment by providing to Shipper a revised Exhibit for each contract affected.









1



---



|Date: March 19, 2003 | Contract No.: 109011
|-------------------- | --------------------



1. TERM OF AGREEMENT:
2. RATES:
3. INCORPORATION BY REFERENCE:
4. NOTICES:

All notices can be given by telephone or other electronic means, however, such notices shall be confirmed in writing at the addresses below or through GEMSTM Shipper and Transporter may change the addresses below by written notice to the other without the necessity of amending this Agreement:









2



---



|Date: March 19, 2003 | Contract No.: 109011
|-------------------- | --------------------



TRANSPORTER:

|ANR PIPELINE COMPANY
9 GREENWAY PLAZA
HOUSTON, TX 77046-0995
Attention: TRANSPORTATION SERVICES
|-----------------------------------------------------------------------------------------------

SHIPPER:

|THE PEOPLES GAS LIGHT & COKE COMPANY
150 N. MICHIGAN AVE
SUITE 3900
CHICAGO, IL 60601
|-------------------------------------------------------------------------------------
|Attention:                                                                           
|                                                                                     
|Telephone:                                                                           
|Fax:                                                                                 



INVOICES AND STATEMENTS:

|THE PEOPLES GAS LIGHT & COKE COMPANY
130 E RANDOLPH DR 23RD FLR
CHICAGO, IL 60601-6207
|--------------------------------------------------------------------------------------
|Attention:                                                                            
|                                                                                      
|Telephone:                                                                            
|Fax:                                                                                  



NOMINATIONS:

|THE PEOPLES GAS LIGHT & COKE COMPANY
150 N. MICHIGAN AVE
SUITE 3900
CHICAGO, IL 60601
|-------------------------------------------------------------------------------------
|Attention:                                                                           
|                                                                                     
|Telephone:                                                                           
|Fax:                                                                                 





3



---



|Date: March 19, 2003 | Contract No.: 109011
|-------------------- | --------------------



ALL OTHER MATTERS:

|THE PEOPLES GAS LIGHT & COKE COMPANY
150 N. MICHIGAN AVE
SUITE 3900
CHICAGO, IL 60601
|-------------------------------------------------------------------------------------
|Attention:                                                                           
|                                                                                     
|Telephone:                                                                           
|Fax:                                                                                 



8. FURTHER AGREEMENT:

The rate for the Primary Route MDQ as listed in the attached Primary Route Exhibit and secondary receipts/deliveries as listed below shall be a Monthly Reservation Rate of $2.8140 per dth and the applicable Commodity Rate (equivalent on a daily basis to a 100% Load Factor Rate of $0.10 per dth). This rate shall be inclusive of Dakota Surcharge, Transition Costs, and any other fees or surcharges under Transporter's FERC Gas Tariff: not to exceed the total of Transporter's Maximum Reservation, Commodity and applicable surcharge rates. In addition, Shipper shall be charged ACA and Transporter's Use (Fuel) in accordance with Transporter's FERC Gas Tariff. Shipper shall not be charged for GRI surcharges, unless and to the extent that Transporter is required to collect and/or remit such charges to GRI.

Secondary Receipt(s): None 
Secondary Delivery(ies): East Joliet (4196)

The mutually agreed upon rate for the use of any point not listed in Paragraph A above shall be ANR's Maximum Applicable Reservation and Maximum Applicable Commodity Rates under ETS service. In addition, Shipper shall be charged ACA, Transporter's Use, Dakota Surcharge, Transition Costs and any other fees or surcharges under Transporter's FERC Gas Tariff.









4