1. WASATCH FRONT EMISSIONS ARE IMPROVING 320 tons/day Source: Utah Division of Air Quality Patrick Barickman, pbarickman@utah.gov 35% Reduction 2014 2002 Average winter weekday emissions (Nox, VOC, SOx, Direct PM) Salt Lake, Davis, Weber and Utah counties

2. REDUCED EMISSIONS FROM US REFINERIES Source: “An Examination of Historical Air Pollutant Emissions from US Petroleum Refineries”, Thomas P. Nelson, February 2012 2 Refineries in the U.S. have reduced criteria air pollutants by 80% since 1990.

3. SALT LAKE CITY REFINERY REDUCED EMISSIONS 3 Since 1993: SOx reduced by 98% NOx reduced by 60%

4. PRODUCT CHANGES OVER TIME Source: US EPA 4