In adopting this Act, it is recognized that the field of environmental health is a dynamic field that is continually evolving into new and complex areas of concern. It is the legislative intent of this Act to recognize the occasional existence of overlapping functions with engineers, industrial hygienists, veterinarians, and other professions licensed to carry out specific activities that may touch on some aspects of the field of environmental health. It is not the intent of this Act to require registration of these individuals, nor is it the intent that the registration of any person under this Act would allow that person to perform functions or engage in activities that would include the practice of engineering. It is the sole purpose and intent of this Act to safeguard the health, safety, and general welfare of the public from adverse environmental factors and to license those environmental health professionals who have completed approved environmental health or science curricula, are qualified to work in the field of environmental health, within the scope of practice as defined in this Act, and not to restrict nor interfere with interstate commerce.