The U.S. Foreign-Trade Zones Board, operating under the U.S. Commerce Department, has approved a foreign-trade zone (FTZ) subzone for the Benicia refinery operated by Valero Refining Co. in California. The FTZ will operate as a subzone of the Port of San Francisco’s Foreign Trade Zone No. 3. Subzones are typically areas near but not located inside an existing FTZ, so they require the FTZ Board to extend the duty-free zone to these areas individually. Valero, based in ...