Neb. Rev. Stat. §§ 38-1308
A person shall be eligible for certification as an environmental health specialist if he or she has graduated with a baccalaureate or higher degree from an accredited college or university, has satisfactorily completed at least forty-five quarter hours or thirty semester hours of academic work in the basic natural sciences, has been employed full time as an environmental health specialist for a period not less than two years, and has passed an examination approved by the board, except that a person holding a degree higher than a baccalaureate degree who has satisfactorily completed at least forty-five quarter hours or thirty semester hours of academic work in the basic natural sciences may qualify when employed as an environmental health specialist for a period of not less than one year.
Neb. Rev. Stat. §§ 38-1308