26 FLARE-GAS RECOVERY SYSTEMS RESULTED IN MORE THAN 96% FLARING-FREE OPERATIONS IN 2021 More than 79% of Valero’s large process flares are equipped with flare-gas recovery systems. These systems reduce flaring and air pollution, and recover fuel gases, which are used to fire heaters and boilers, reducing natural gas consumption. SULFUR REMOVAL Sulfur obtained from the refinery process unit is removed for a variety of beneficial uses, including crop fertilizer, polymers and pharmaceuticals. MARINE VAPOR RECOVERY UNITS At certain refineries, captured vapors generated when loading vessels with gasoline and other light products are routed back to the refinery for reprocessing. FUEL FROM OIL WASTE Our unique refinery complexity allows for residual oils processing. Recovered usable oil and oily solids are reprocessed into high- value fuel and byproducts through refining processes, including “coker injection,” avoiding the generation and disposal of wastes. Reducing, Reusing, Recycling and Repurposing For Valero, being the most efficient and reliable operator in a highly competitive industry means being a better environmental performer. Our operations are looking for ways to continue reducing emissions and waste, reusing energy and byproducts, recycling materials and repurposing wastes.