Completed EPNG NAS Simplification Items Original Target Last Updated Target Completed DateComments Change the Screens to Net FDD QuantitiesQ /30/2009See EPNG Notice # 8258 Future Day TransactionsQ4 2007Q /1/2009See EPNG Notice # Automatic HEEN Feature Q /1/20089/30/2008See EPNG Notice #7276, #7288 Add a new contractual entitlement report (One report of Scheduling Report Enhancements) Q /11/2008 See EPNG Notice #7126 Nomination Quantity Shown at all times Q /2008 7/30/2008See EPNG Notice #7048 Apply all Confirmation Changes in Run 2 (Perform Capacity Allocation based on Nominations only) /20087/23/2008See EPNG Notice #6987, #6995, #7013, #7036 EPNG NAS Simplification Items Completed During Last 12 Months EPSQ on Nomination Screen Q /2008 6/19/2008See EPNG Notice #6955

EPNG NAS Simplification Conference Call Working Document System Enhancement Items as of July 23, 2009 EPNG NAS Enhancement Items (By Priority) Business Requirements Status Development Status 1 CategoryEstimated Time 2 Estimated Target Auto-Download VISA dataRequirements are in development Development begins 08/09 Customer Priority4 MonthsQ Seamless Nominations through EPNG capacity on Mojave Requirements completeDevelopment begins 07/09 Customer Request/ Compliance 4 MonthsQ New Security SystemDevelopment CompleteInterface Development begins 08/09 Customer Upgrade3 MonthsQ Overrun Alert MessageCustomer feedback being gathered, business requirements in analysis Development begins 10/09 Customer Priority3 MonthsQ There may be development on lower ranked items that will begin earlier than other higher ranked items. This is due to the availability of the developer resource needed for the specific item. 2 - These time estimates are the estimated actual time from start of Development to Completion. They take into account programming and testing resource availability as well as company holiday and vacation times of resources. Scheduling Reports Enhancements Customer feedback gathered, business requirements in analysis Development begins 1/10 Customer Priority3 MonthsQ Combine pooler buy/sell formRequirements analysis will begin 3/10 Development begins 3/10 Customer Priority6 MonthsQ Keystone Pool Changes (New Proposal) Business requirements in analysis To Be DiscussedCustomer Priority1 MonthOctober 2009 or Eunice Shutdown 2010 As a part of our ongoing commitment to ensuring the most reliable and user friendly system, we are constantly performing system upgrades and enhancements. While these enhancements and upgrades are not listed below, they do impact resources and affect our ability to deliver the customer prioritized items.

EPNG NAS Enhancement Items (By Priority) Business Requirements Status Development Status 1 CategoryEstimated Time 2 Estimated Target EPNG NAS Simplification Conference Call Working Document System Enhancement Items as of July 23, 2009 Change default date for copy feature in Passport Requirements completeDevelopment begins 12/09 Customer Priority2 MonthsQ Create a link from NAS Imbalance Management to Flowing Gas screen Requirements analysis will begin 12/09 Development begins 12/09 Customer Priority5 MonthsQ Enhanced DRN Cross Reference Table query (search within a string) Requirements completeDevelopment begins 05/10 Customer Priority1 MonthQ VISA Load ProfileRequirements analysis will begin 2/10 TBDCustomer PriorityTBD 1 - There may be development on lower ranked items that will begin earlier than other higher ranked items. This is due to the availability of the developer resource needed for the specific item. 2 - These time estimates are the estimated actual time from start of Development to Completion. They take into account programming and testing resource availability as well as company holiday and vacation times of resources. As a part of our ongoing commitment to ensuring the most reliable and user friendly system, we are constantly performing system upgrades and enhancements. While these enhancements and upgrades are not listed below, they do impact resources and affect our ability to deliver the customer prioritized items.

Status of EPNG NAS Simplification Enhanced EBB Project The enhanced EBB Project will be broken down into four phases: – Phase 1 : Implemented early June 2009 This will include: the new color scheme and logos, tree menu, Standards of conduct, SOC/COC notice subscription, operational flow data, contract authorization forms, and FERC filings. Phase 1 will also include a new grid on the following pages: Operationally available capacity, Tariff reference for gas quality, Index of Customers, and Notices. – The new grid will allow users to control the page size, filter and sort options, and the ability to pin columns in order to view the data which is most useful to you. Two additional enhancements within phase 1 will include the ability to query for historical data and a streamlined download process. – The improved download process will allow users to select which download format best fits their needs; Excel, HTML, or PDF. – Phase 2: Implemented August 2009 This will include enhancements to: EPNG Tariffs, searching the EPNG Tariffs, NNT Flow Data, Location information, and Transactional reports (Firm, Interruptible, Released Capacity). – Phase 3: Implemented October 2009 Phase 3 will update: Unsubscribed Capacity, Capacity from pipelines, Capacity from expired contracts, Gas quality data, Cashout prices, and OPAS – Phase 4: Implemented November 2009 This will include: A capacity allocation log, Annual notices, and Informational lookup enhancements. As the EBB is being enhanced, all links to other pages within the EBB will continue to function as normal until their respected enhancement phase.

Current Keystone Pool KEYSTONE POOL Pooling Point WAHA POOL Pooling Point KEYST A PLAINS S MONUMENT EUNICE C EUNICE B KEYSTSUC KEYST B EUNCPECS PECOS GUADLUPE WAHA W WAHA ST LINE2000

Proposal from Shippers PROPOSED EUNICE POOL Pooling Point KEYSTONE POOL Pooling Point WAHA POOL Pooling Point PLAINS S MONUMENT EUNICE C EUNICE B KEYSTSUC KEYST B EUNCPECS PECOS GUADLUPE WAHA W WAHA ST LINE2000