Portland Natural Gas Transmission System

Second Revised Volume No. 1

Effective Date: 09/01/2006, Docket: RP06-449-000, Status: Effective

Original Sheet No. 324 Original Sheet No. 324 : Effective

GENERAL TERMS AND CONDITIONS (Continued)

All Nominations should include Shipper defined begin dates and end dates. All

Nominations, excluding Intra-day Nominations, should have roll-over options.

7.2 Nomination Cycles.

The following are the standard Nomination cycles:

(i) The Timely Nomination Cycle: 11:30 am for Nominations leaving

control of the nominating party; 11:45 am for receipt of Nomination by

Transporter (including from Title Transfer Tracking Service Providers

(TTTSPs)) ; noon to send quick response; 3:30 p.m. for receipt of completed

confirmations by Transporter from upstream and downstream connected parties;

4:30 p.m. for receipt of Scheduled Quantities by Shipper and point operators

(all times Central Clock Time on the Day prior to gas flow).

(ii) The Evening Nomination Cycle: 6:00 p.m. for Nominations leaving

control of the nominating party; 6:15 p.m. for receipt of Nominations by

Transporter (including from TTTSPs); 6:30 p.m. to send quick response; 9:00

p.m. for receipt of completed confirmations by Transporter from upstream and

downstream connected parties; 10:00 p.m. for Transporter to provide Scheduled

Quantities to affected shippers and point operators and to provide Scheduled

Quantities to bumped parties (notice to bumped parties), (all times Central

Clock Time on the Day prior to gas flow). Scheduled Quantities resulting from

an evening Nomination that does not cause another Shipper on Transporter's

service to receive notice that it is being bumped should be effective at 9:00

am Central Clock Time on the gas Day; and when an evening Nomination causes

another Shipper on Transporter's service to receive notice that it is being

bumped, the Scheduled Quantities should be effective at 9:00 am Central Clock

Time on the gas Day.

(iii) The Intraday-i Nomination Cycle: 10:00 am for Nominations leaving

control of the nominating party; 10:15 am for receipt of Nominations by

Transporter (including from TTTSPs); 10:30 am to send quick response; 1:00

p.m. for receipt of completed confirmations by Transporter from upstream and

downstream connected parties; 2:00 p.m. for Transporter to provide Scheduled

Quantities to affected shippers and point operators and to provide Scheduled

Quantities to bumped parties (notice to bumped parties), (all times listed as

Central Clock Time on the Day of gas flow). Scheduled Quantities resulting

from Intraday-I Nominations should be effective at 5:00 p.m. Central Clock

Time on the Day of gas flow.

(iv) The Intraday-2 Nomination Cycle: 5:00 p.m. for Nominations leaving

control of the nominating party; 5:15 p.m. for receipt of Nominations by

Transporter (including from TTTSPs); 5:30 p.m. to send quick response; 8:00

p.m. for receipt of completed