 Federal regulators, however, forced the divestiture of over half of the former Rainier Bank Washington state franchise (having been renamed Security Pacific Bank Washington, N.A.in 1989), as the combination of BankAmerica's Seafirst subsidiary and Rainier would have given BankAmerica too large a share of the retail banking market in Washington state.While 82 branches were retained and consolidated with Seafirst, 38 were sold to West One Bancorp (now itself merged into U.S. Bancorp) and 48 to KeyBank.