Discovery Gas Transmission LLC

Original Volume No. 1

Effective Date: 01/01/2008, Docket: RP08- 70-001, Status: Effective

Fourth Revised Sheet No. 52 Fourth Revised Sheet No. 52 : Effective

Superseding: Third Revised Sheet No. 52

3. RATES AND CHARGES

The applicable charges for Transportation services provided under this IT

Rate Schedule are set forth in the currently effective Sheet No. 20 of

this FERC Gas Tariff or in Exhibit D to the IT Service Agreement, in the

case of Negotiated Rates. For all Transportation service rendered under

this Rate Schedule, Shipper shall pay Transporter each Month the sum of

the usage charge, ACA, HMRE and MO surcharges and any other charges,

authorized under the provisions of this FERC Gas Tariff, as follows:

a. Usage Charge - The sum of:

i. An amount determined as the product of:

A. The total quantity of Gas in Dts received by

Transporter for the account of Shipper during the

previous Month for service through the Mainline

Facilities; and

B. The usage rate per Dt for IT (Mainline) set forth from

time to time on the currently effective Sheet No. 20

of this FERC Gas Tariff, Original Volume No. 1, or

superseding tariff; plus

ii. An amount determined as the product of:

A. The total quantity of Gas in Dts delivered by

Transporter for the account of Shipper during the

previous Month for service through the Expansion

Facilities; and

B. The usage rate per Dt for IT (Market Expansion) set

forth from time to time on the currently effective

Sheet No. 20 of this FERC Gas Tariff, Original Volume

No. 1, or superseding tariff.

b. ACA, HMRE and MO Surcharges - An amount determined as the product of:

i. The total quantity of Gas in Dts received by Transporter for

the account of Shipper during the previous Month; and

ii. The ACA, HMRE and MO surcharges per Dt set forth from time to

time on the currently effective Sheet No. 20 of this FERC Gas

Tariff, Original Volume No. 1, or superseding tariff.