1. 1 Intra-Day Nominations through a Posted Point of Restriction Kathryn Burch Project Manager – Standards and Regulatory Compliance Spectra Energy Transmission August, 2007

2. Texas Eastern Transmission – Tariff Texas Eastern Transmission, LP, FERC Gas Tariff –4.1 (B) (3) Scheduling of Storage and Transportation Services If a Customer submits an intra-day nomination on the same contract which already has been scheduled to flow through a Posted Point of Restriction, such intra-day nomination may be scheduled by Pipeline provided that the intra-day nomination has a scheduling sequence priority that is being scheduled and allowed to flow on the same Gas Day as the intra-day nomination pursuant to Sections 4.1(I) and 30.6 of the General Terms and Conditions and provided that the intra-day nomination does not result in a net increase in the total volume scheduled on the contract through the posted point of restriction on that Gas Day. –This language was approved by the Commission in a Letter Order. (Texas Eastern Transmission, LP, Docket No. RP06-70-000, November 22, 2005)

3. Revision of Nominated Deliveries Customers whose firm capacity has been scheduled through a point of restriction during the Timely Cycle can revise their nomination after the Timely nomination deadline to a new receipt or delivery point, as long as the point change(s) do not alter the path of the gas through the restriction, just the delivery or receipt point. –A customer, who wishes to change a scheduled delivery point may revise his nomination provided the following: 1) the intra-day nomination has a scheduling priority equal to, or higher than the scheduling priority that has been scheduled and allowed to flow through the posted point of restriction (even if the posted point of restriction is subject to partial restriction). –Scheduling priorities range from 1 to 4 with 1 having the highest scheduling priority. 2) the nomination does not result in a net increase in the total volume scheduled under the contract through the posted point of restriction.

4. Rules Rules: –Must be able to confirm the revised volume with all affected point operators. All revised nominations are required to be confirmed at the original delivery point and the new delivery point. –The nomination must be on the same contract. –Must not increase the volume through the Posted Point of Restriction –Can not impact another shipper. The following examples assume that the revised nominations have been confirmed and are on the same contract as the original nominations. They also assume that the pipeline is scheduling and allowing to flow nominations through the point of restriction with a scheduling priority of secondary out of path or higher. Although the examples use primary transportation capacity, the examples hold true for secondary priorities as long as the priority is the same or higher than the level of priority already scheduled through the point of restriction.

5. Example 1 The customer has 100 Dth scheduled to flow from a primary receipt point through the posted point of restriction to a primary delivery point. Under the same contract, the customer then requests a revised nomination to move 50 of the 100 Dth to a secondary delivery point that is outside its Transportation Path but still through the posted point of restriction. This revised nomination would be allowed because the intra-day nomination; –(i) has a scheduling sequence priority number equal to or higher than the priority that is being scheduled and allowed to flow, and –(ii) does not change the total quantity of gas scheduled to flow through the posted point of restriction under the same contract.

6. Example 2 The customer has 100 Dth scheduled to flow from a primary receipt point to a primary delivery point. Unlike Example 1, however, the customer's scheduled nomination of 100 Dth does not flow through the posted point of restriction. Instead, the customer's existing scheduled nomination has a path that is entirely upstream of the posted point of restriction. Under the same contract, the customer then requests a nomination change to move 50 of the 100 Dth to a secondary delivery point that is further downstream outside its Transportation Path, resulting in a path through the posted point of restriction. This nomination would not be allowed because it would result in an increase in the total quantity scheduled to flow through the posted point of restriction under that contract.

7. Questions? How are the nomination tracked to determine if the changed nomination was originally scheduled or if it is a completely new nomination? After the timely nomination cycle is scheduled, every subsequent intra-day cycle is scheduled and the nominations time stamped. When there is a Posted Point of Restriction in place, a special scheduling job is run that compares new nominations with those previously scheduled and determines if any of the new nominations are revisions of already scheduled nominations and are already flowing through the Posted Point of Restriction. The revised nomination changes are not restricted to a particular cycle after the Timely cycle. Spectra Energy supports this process only on Algonquin and Texas Eastern. These pipelines have discrete supply and delivery areas, which provide the required flexibility to change either receipt or delivery points without impacting pipeline operations or the obligations to shippers.

8. Spectra Energy Transmission System Storage Capacity265 Bcf Transmission Pipe17,500 mi System Compression 3,000,000 HP Natural Gas Throughput3.2 Tcf Canadian Processing Capacity5.3 Bcf/day Distribution Main Lines 22,000 mi Distribution Service Lines 13,000 mi Retail Customers1.3 MM