In a unit where grain is steeped, sulfur dioxide is added directly to grain and water. Operators have long complained about sulfur dioxide fumes, citing runny noses, teary eyes, coughing, and headaches. The concentration has been checked many times and has always measured lower than OSHA specifications. Management’s stance has always been, “Don’t spend money to fix something if it isn’t broken.” A few employees have quit, citing allergies and other medical problems. Operators in the area have requested an engineering study to remedy the situation. Chris is given the job of investigating whether th  exhaust fan should be replaced with an expensive ventilation system. What are Chris’s obligations? Can they all be met? What creative strategies can you suggest to Chris to deal with this situation?