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. Not every applicant will require the same documents, therefore it is the applicants responsibility to ensure that their application package includes all necessary documents to determine qualifications and eligibility for appointment, such as a copy of your SF-50, transcript, ICTAP/CTAP documentation (for displaced Federal employees).You will not be contacted for additional information.