Thorough knowledge of modern methods, principles, techniques and practices of environmental health, thorough knowledge of laws and administrative rules governing sanitation programs of the state; ability to make thorough investigations, compile data and present clear, concise report; ability to promote awareness of, and participation toward correction of public health problems among the general public; ability to plan and organize work effectively; working knowledge of methods and equipment used by industries and any other phase of the social structure in which the program is concerned. font; distinguishes colors and shades on clorimeters; speaks with a clear and audible voice; hears a normal speech level; sits; stands; moves about the work area; uses hands and fingers to grasp and manipulate objects; operates a computer and keyboard; bends; stoops; climbs 1 floor of stairs; crawls on hand and knees; reaches overhead; lifts, pushes, pulls, moves carts and carries items weighing up to 25 lbs.