Midwestern Gas Transmission Company

SECOND REVISED VOLUME NO. 1

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Effective Date: 05/01/2000, Docket: RP00-233-000, Status: Effective

Third Revised Sheet No. 42 Third Revised Sheet No. 42 : Superseded

Superseding: Second Revised Sheet No. 42

Rate Schedule SA

Supply Aggregation Service

1. AVAILABILITY

This Rate Schedule is available for any Party (Aggregator) which has (i)

requested supply aggregation service by Midwestern Gas Transmission Company

(Transporter); (ii) has met the conditions for qualification for receipt of

service under Article XXV of the General Terms and Conditions of Transporter's

FERC Gas Tariff; (iii) and after review and acceptance of such request by

Transporter, has executed a supply aggregation service agreement with

Transporter for service under Rate Schedule SA pursuant to Article XXV of the

General Terms and Conditions.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 This Rate Schedule permits Aggregator to aggregate supply pursuant to this

Rate Schedule SA from any and all receipt points within pooling area(s) as

defined in Article I, Section 33 of the General Terms and Conditions of

Transporter's FERC Gas Tariff. Aggregator will assume the responsibility

of balancing, by pooling area, the scheduled receipts of gas into the

applicable supply aggregation service agreement with scheduled quantities

delivered out of the supply aggregation service agreement.

2.2 Receipts into a supply aggregation service agreement can be from a

physical receipt point(s) or from transportation or other supply

aggregation services at a "paper" pooling point for the designated pooling

area(s). Deliveries from a supply aggregation service agreement can be to

transportation or other supply aggregation services at a "paper" pooling

point for the designated pooling area(s). "Paper" pooling points will be

identified on PASSKEY.

3. NOMINATIONS

3.1 Aggregator shall nominate quantities into and out of the relevant supply

aggregations service agreement(s).

3.2 In addition to daily nomination rights and obligations as set forth in

Article III, Section 4 of the General Terms and Conditions, Aggregator

shall have the right to make intra-day and hourly nomination changes as

provided in and subject to the conditions set forth in Article III,

Section 4(d) and (e) of the General Terms and Conditions.

3.3 Within each pooling area, nominations for quantities received into a

supply aggregation service agreement shall balance with deliveries

nominated out of the supply aggregation service agreement. Aggregator

shall maintain a balance between actual receipts and actual deliveries by

pooling area, provided that where differences occur between daily

scheduled receipts and scheduled deliveries, Transporter shall allow

quantities to be scheduled out of balance up to pipeline operating

conditions and limitations. In the event of an operational constraint on

its system, Transporter may adjust by pooling area(s) scheduled receipts

into, or deliveries out of, Aggregator's supply aggregation service

agreement. Aggregator will assume the responsibility for any scheduled

imbalances or for any imbalances resulting from allocation(s) at receipt

meter(s) where no balancing agreement is in effect.