Your facility will start a cleaning operation in an open-bay room using a styrene dip tank. You estimate the operation will use 1.5 gallons of styrene each 8-hour shift. You determine the current general air distribution of the room is moderate, but the room layout does not currently allow dilution air to pass directly through the area above the dip tank, creating a zone of contamination over the tank. You have been tasked with determining the minimum airflow requirement for a dilution ventilation system to maintain the concentration of styrene at the Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL) of 100 ppm. You need to calculate the number of pints per hour using the above information