1. NORTHERN NATURAL GAS Enron Transportation Services Customer Services / Gas Logistics Lynn Blair “Need Title”

2. NORTHERN NATURAL GAS Topics NNG LFT Service Confirmation by Exception Reverse Auction Did You Know Flowing Gas Team Pictures

3. NORTHERN NATURAL GAS NNG LFT Service Available year round in the field area Available in the Market area from April through October LFT capacity available for one month or up to a one month term will be posted on NNG’s Internet Website for a minimum of (1) day prior to awarding capacity; LFT capacity available for more than (1) month will be on the Internet Website for a minimum of (2) days

4. NORTHERN NATURAL GAS Confirmation by Exception Operator Choices: –Active Confirmation –Passive Confirmation NEW Confirmation by Exception –NNG will automatically confirm all Nominations for the Operator’s specified location(s). All confirmed quantities will equal nominated quantities for all cycles. Operators will be able to change any confirmation that is automatically confirmed by NNG during any cycle. Any change made by the operator will remain in place for the entire gas day.

5. NORTHERN NATURAL GAS Reverse Auction The Reverse Auction pool will be terminated November 1, 2001 Shippers should have received new contracts Capacities are at either Ventura, Welcome or Aberdeen

6. NORTHERN NATURAL GAS Did You Know You can view all pool activity in one screen on the nomination and scheduling screens with sub totals by pool/zone View Scheduled Quantities screen by cycle Added subtotal option on Nom/Sched/Conf/ NomRec and all Storage views

7. NORTHERN NATURAL GAS Flowing Gas Existing Online Reports: Allocation, Shipper Imbalance, Contract Imbalance, Measurement, Invoice Additional reports that are currently mailed will be will be available online Available via the Web with a target date of 09/30/01 Access to the newly enhanced system requires the following: Upgrade to Internet Explorer 4.0 or above, Netscape Navigator 4.08 or above, or Netscape Communicator 4.73 For optimal viewing, the Download of the Adobe Acrobat Reader to access Rich Format Test (RTF) documents is advised Mail-outs will continue until 01/01/02

8. NORTHERN NATURAL GAS Flowing Gas Access to Reports Access to HotTap Request Access to Flowing Gas Reports via Online or the Help Desk Click Customer Activity Click on Flowing Gas Sign on with ID and Password Click on Report Option to Print or Download

9. NORTHERN NATURAL GAS Flowing Gas Documents NNG Allocation NNG Contract Imbalance NNG Daily Volume Allocation Statement NNG Imbalance Calculation Detail NNG Imbalance Cash out Invoice NNG Imbalance Confirmation Letter NNG Invoice NNG Mainline Path NNG Measurement NNG Payment Remittance NNG Receipt Variance Detail NNG Scheduled Paths NNG Shipper Imbalance NNG SMS DDVC Calculation NNG Variance Invoice NNG Volume Imbalance and Dollar Valuation View GISB Codes Documents currently available online

10. NORTHERN NATURAL GAS NNG Team Pictures