Theowner of a fireproofing and painting company in Bergen County owes over $680,000 in back taxes, U.S. District Attorney Phillip R. Sellinger said Friday. John Constantino, 67, of Franklin Lakes was indicted on 18 counts of tax evasion and failure to file tax returns for himself and the company he has owned since at least 1989, authorities said. Constantino failed to report business and personal incomes on corporate and personal tax returns from 2017 to 2022, prosecutors said. That left him with $682,735 in unpaid taxes. Authorities said Constantino concealed his personal and business income …