This case addresses allegations that The HollyFrontier Corporation (HollyFrontier) failed to comply with the Clean Air Act (CAA) Reid vapor pressure fuel standards at several of their refineries and failed to comply with various fuel testing requirements. HollyFrontier is headquartered in Dallas, Texas, and operates five refineries throughout the mid-continent, southwestern, and Rocky Mountain regions with a cumulative total processing capacity of 443,000 barrels per day. HollyFrontier Refining & Marketing LLC, Frontier El Dorado Refining LLC, Holly Refining & Marketing Company ? Woods Cross LLC, and Navajo Refining Company, L.L.C operate HollyFrontier Corporation?s marketing, crude and product supply, planning, human resources, and accounting functions related to HollyFrontier Corporation?s refineries.
The EPA discovered the alleged violations from information self-disclosed by the defendants. The fuel quality violations involve the defendants? failure to meet RVP standards for gasoline produced at the Woods Cross (Utah), El Dorado (Kansas), and Navajo (New Mexico) refineries at various times from 2006 to 2011.
The defendants estimate that their standard violations resulted in about 10 excess tons of emissions of volatile organic compounds (VOCs), including air toxics. Air toxics ? also known as ?hazardous air pollutants,? or HAPs ? are those pollutants known or suspected to cause cancer or other serious health or environmental effects. VOCs are one of the primary const