A manufacturer of beef sticks produces a wastewater flow of 2000 (m^3)/day containing 120 g/L salt. It is discharging into a river with a flow of 34,000 (m^3)/day and a salt concentration of 50 mg/L. The regulatory agency has told the company to maintain a salt level pf no greater then 250 mg/L downstream of the discharge. what should the removal efficiency. (percentage of the salt removed) of a process designed to remove salt from the waste water stream?