A bachelors degree in a branch of engineering, physical science, or life science that included 12 semester hours in chemistry, including organic chemistry, and 18 additional semester hours of courses in any combination of chemistry, physics, engineering, health physics, environmental health, biostatistics, biology, physiology, toxicology, epidemiology, or industrial hygiene; or. ACTIVE DUTY SERVICE MEMBERS: The VOW Act requires federal agencies to treat an eligible active duty service member as a veteran, disabled veteran, and preference eligible (as applicable) when applying for civil service positions before the effective release or discharge date.