Kiewit subsidiary, Cherne, completed two projects at the El Segundo Refinery, the largest-producing oil refinery on the West Coast, making more than 276,000 barrels of crude per day. To meet the California Air Resources Board Tier 3 standards, Cherne was first contracted to install a depentanizer unit and naphtha hydrotreater as well as outside battery … Continue reading El Segundo Refinery