Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

Effective Date: 05/01/2010, Docket: RP10-567-000, Status: Effective

First Revised Sheet No. 290 First Revised Sheet No. 290

Superseding: Original Sheet No. 290

RATE SCHEDULE USS

UNBUNDLED SALES SERVICE

(continued)

6. CURTAILMENT (continued)

Priority 7 Industrial requirements served under interruptible

contracts with customers who have agreed to purchase

at least a specified minimum volume of gas if it is

tendered to them.

Priority 8 Industrial requirements served under interruptible

contracts with customers who have not agreed to

purchase at least a specified minimum volume of gas if

it is tendered to them.

curtailment until all lower priorities have been ordered curtailed

one hundred percent (100%); that is, no curtailments of Priority 5

uses will be ordered until all Priority 6 uses have been ordered

curtailed, and so forth.

(d) If supply availability permits only partial sales of gas to a

given category of use, curtailment will be effected, on the basis

of a pro rata sharing based on historical deliveries to customers

for that category. Historical takes will be calculated on the

basis of a three-year average taken from the three-year period

ending September 30, 1971. On days when curtailment is required,

total sales to individual customers may not exceed contract

volumes.

(e) Before service commences, when the character of gas usage

materially changes, and from time to time upon request, each

customer shall furnish Seller with all information reasonably

required by Seller with regard to gas usage at the facility served

to assist Seller in its determination of the proportionate parts,

if any, of that usage falling in different priority categories.

In determining the appropriate priority category for gas sold, no

distinction will be made between gas sold to direct customers and

to resale customers.

(f) Seller does not propose to curtail sales under its several

isolated jurisdictional field sales of gas. The wells covered by

the field sale contracts are not connected to Seller's own

pipeline systems and