When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly study and prepare for exam questions. Take a look at this sample wastewater treatment licensing question along with an explanation of the correct answer.Sample question:The use of fine screens at the headworks in wastewater treatment plants has become very common. What is the typical average opening size of the screen?A) 2 inchesB) 1 inchC) 0.1 inchD) 0.06 inchAnswer:The openings on the fine screens that are used for reducing solids and BOD are in the range of .04 to .25 inch (1 to
