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QUESTAR GAS Transportation Balancing Susan Davis, Director, Account & Community Relations February 28, 2014

QUESTAR GAS Transportation Balancing Susan Davis, Director, Account & Community Relations February 28, 2014. We develop, transport and deliver clean energy. Questar’s Pipeline System. ®. The Flow of Natural Gas. City Gate. Questar Rate Structure. Firm. Interruptible.

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QUESTAR GAS Transportation Balancing Susan Davis, Director, Account & Community Relations February 28, 2014

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  1. QUESTAR GASTransportation BalancingSusan Davis, Director, Account & Community RelationsFebruary 28, 2014 We develop, transport and deliver clean energy

  2. Questar’s Pipeline System ®

  3. The Flow of Natural Gas City Gate

  4. Questar Rate Structure Firm Interruptible Minimum Annual DTH Residential/Commercial 7000 Sales GS, FS Commercial/Industrial IS Annual Contracts Market Based FT-1, TS Minimum Annual Volumes Large Transportation (with firm TS 120,000 DTH (FT-1) Commercial/Industrial demand) GS - Daily volumes not to exceed 1,250 DTH in any one day during the winter season. FS - Daily volumes not to exceed 2,500 DTH in any one day during the winter season. Qualifications: Annual dth over 2,100 dth, Load Factor 40% or higher

  5. Transportation Balancing Restrictions • Daily … typically +/- 5%. • Can be restricted to no over or under deliveries based on system operating constraints. • Violations of the daily restrictions are subject to penalties as provided in the tariff.

  6. Transportation Balancing Restrictions (continued) • Monthly… must be within +/- 5%. • Imbalances may be traded through 15 days after month end closing. • Balances not traded within that time are subject to cash out or gas sale provisions provided in the tariff.

  7. Interruption Procedures

  8. Supply Curtailment vs. Interruption • Deliveries to the city gate are the responsibility of the transportation customer. • If gas is not delivered to the city gate, QGC is not responsible to supply gas to TS customers, even if customer has firm capacity on QGC. • Gas delivered to TS customers may be limited to contracted firm amount or daily nomination, whichever is less. • QGC release capacity is recallable. • Flexed firm capacity is firm, but it is a lower priority.

  9. QGC History of Interruptions • December 5, 2013 Supply Curtailment • Winter 2000-01 three interruptions • Two Northern • One Southern • January 1997 for 36 hours • First partial interruption • December 1990 for 9 days • First interruption since 1982

  10. Interruption Process • Winter interruption season: • November through March • But interruptions can happen any time during the year • Simultaneous interruption • Both sales (IS) and transportation (TS) • Geographic interruption possible • Partial interruption possible

  11. Interruption Procedures • Customers will be notified by QGC account management personnel –day or night • Notify QGC if interruption contacts change –educate all involved in the process • Two-hour maximum allowance to interrupt gas service

  12. Failure to Interrupt • Penalty • Distribution non-gas component: $15/dth • Supplier non-gas component: $5.71 • Gas-cost component: Highest purchased gas during period of interruption = $4.75 on Dec. 5, 2013 • Total = $25.46/dth • Meter shut-off may be used to maintain system integrity

  13. Gas Supply Discussion • Nominations/Scheduling Process • NAESB Cycles • (North American Energy Standard Board) • Events of December 5th, 2013

  14. Evening Nominations (Cycle 2) Sent by 5:00 pm to the TSP by 5:15 pm Confirmations by 8:00 pm Scheduled by 9:00 pm Timely Nominations (Cycle 1) Sent by 10:30 am to the TSP by 10:45 am Scheduled at 3:30 pm Intraday 1 Nominations (Cycle 3) Sent by 9:00 am to the TSP by 9:15 am Confirmations by 1:00 pm Scheduled by 1:00 pm Intraday 2 Nominations (Cycle 4) Sent by 4:00 pm to the TSP by 4:15 pm Confirmations by 7:00 pm Scheduled by 8:00 pm 8:00 am GD2 Gas Flow 8:00 am GD2 Gas Flow 4:00 pm GD2 Gas Flow 8:00 pm GD2 Gas Flow Gas Day 2 Gas Day 1 - December 5, 2013 - December 4,2013 Reductions for (GD5) - 2,348 Dth 10:00 am Nominations in for Dec 5th (GD5) - 154,953 Dth 1:00 pm - Official cut notifications were sent out to transportation customer’s agents as part of the confirmation of the ID1 cycle 9:45 am QGC notified by QEP of cuts at Blacks Fork and Red Wash plants - QGC started working with scheduling to determine the extent of cuts for transportation customers Evening Noms for (GD5) - 139,945 Dth 7:00 pm - Questar Gas notified customers that they could resume usage to match their increased supply that was scheduled to arrive at 8pm. 12:00 pm - A list of customers that required reductions was sent to Questar Gas account representatives 8:30 am and 10:00 am LeRoy and Chalk Creek aquifers to withdrawal (Coalville was already on withdrawal) 7:30 am QGC Gas Supply purchases gas (ID1) to make up for assumed cuts at Blacks Fork 6:00 am – QGC Gas Supply notices reduced flow from Blacks Fork (Pipeviewer)

  15. QUESTIONS? Thank You.

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