Backers are calling it their “cold train,” a four-day-a-week run of refrigerated intermodal cargoes from the Port of Quincy, Wash., to Chicago that starts moving this week. The inland port’s intermodal terminal, which includes cold storage warehousing, is on a BNSF Railway route that goes from Seattle to Chicago. Columbia Colstor, which has several sites in the state of Washington, said the express train service “will provide Washington State produce and perishable shippers with a cost-effective and speedy new shipping option to the Midwest.”