1. 1 Judd Cook -Director, Business Development-

2. Questar Corporation - Founded in 1922 - Headquartered in Salt Lake City, UT - Integrated Natural Gas Company - $5.37 Billion Enterprise Value Wexpro (Development & Production) Questar Pipeline (Transmission) Questar Gas (Distribution) Questar Fueling (CNG Infrastructure)

3. Confidential –Do Not Distribute 33 1981 Installed 1 st NGV station and converted 25 test vehicles 1989 Installed 2 nd NGV station; Converted 100 NGVs (21 of the original 25 were still operating) 1997 Questar Gas operating 857 NGVs 2009 Five new stations opened. Received federal DOE grant for $14.9 million with 22 partners 2012 Questar Fueling formed to design, build and operate CNG stations nationwide

4. Confidential –Do Not Distribute 44 29 Stations Owned by Questar Gas

5. Confidential –Do Not Distribute 5 Price Differential between natural gas and gasoline/diesel Policy Usually driven by environmental concerns

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7. Confidential –Do Not Distribute 7 Natural gas vehicles generally emit 15 - 20 percent fewer GHG emissions than comparable gasoline and diesel vehicles on a well-to-wheels basis. Medium and heavy duty natural gas engines were the first engines to satisfy U.S. Environmental Protection Agency’s (EPA) demanding 2010 emission standards for nitrogen oxides (NOx). The light-duty Honda Civic Natural Gas held the American Council for An Energy-Efficient Economy’s (ACEEE) title of “Greenest Vehicle” for eight consecutive years. Carbon Dioxide Emissions Coefficients by Fuel Pounds CO2 Carbon Dioxide (CO2) Factors:Per Unit of Volume or Mass Per Million Btu Diesel22.4gallon161.3 Natural Gas119.9thousand cubic feet117.0 Gasoline19.6gallon157.2 Source: U.S. Energy Information Administration estimates. Note: To convert to carbon equivalents multiply by 12/44. Coefficients can vary slightly, depending upon estimation method. Detailed factors from the Voluntary Reporting Program (discontinued) Annual factors from the EIA Greenhouse Gas Inventory (discontinued)

8. Confidential –Do Not Distribute 88 Established in March 2012 to meet needs of expanding market for compressed natural gas (CNG) for transportation. Priority areas of focus: Trucking terminal-based facilities for waste, transit and long-haul fleets. Public-access stations in strategic locations near terminals and key routes. Focus on class 6, 7 and 8 trucks; Large light-duty and medium-duty fleets (oil & gas producers, waste haulers)

9. 9 *Information obtained from SEC filings, annual reports, and company news releases 100% 75% 1950 25% 0% Share 1970199020102030 50% Diesel Natural Gas Source: MacKay & Co., and Wards Auto Group, a division of Penton Media, Inc.; 2) Westport

10. 10 *EIA 2014 Energy Outlook Table A2 & B2, converted to GGE’s 11.3% Annual Growth 2012-2040

11. Confidential –Do Not Distribute 11 Completed Stations: Dallas TX Desoto TX San Antonio TX Kansas City KS Topeka, KS Salt Lake City UT Phoenix, AZ Expanded existing contracts with Swift Transportation and Central Freight Awarded two new stations with Frito Lay (SLC and Denver) Signed Anheuser-Busch to supply CNG in Houston and Dallas Awarded $2.2 million dollar grant from state of Texas for station development

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13. Judd Cook www.QuestarFueling.com Questar Fueling@questar.com 13

14. Confidential –Do Not Distribute 14 36% 35% 11% 13% Natural Gas Demand Trillion Cubic Feet Source: U.S. Energy Information Administration (April 2014)

15. 15 * Assumes that 1 GGE of CNG contains 125,000 Btu ** Numbers reflect average Questar Fueling Station

16. Confidential –Do Not Distribute 16 Gallons Cost/Gal.