A facility feeds chlorine to the contact tank at a rate of about 280 gallons every day—the plant flow averages about 2. 9 MGD. However, due to filamentous bacteria, you must also chlorinate RAS, using about 20 gallons/day for that purpose. Also, the facility superintendent has about 15 gallons/day of chlorine fed to the headworks for odor control in the morning. How much chlorine would be used for disinfection during a 6-hour shift?