To be eligible for placement in Assignment Level III, individuals must have, after meeting the minimum requirements described in Assignment Level I, at least two years of satisfactory service as a Scientist (Radiation Control) AL I and AL II with the City of New York, or at least two additional years of satisfactory full-time professional experience in the field of health physics, radiological health, or radiation hygiene. To be eligible for placement in Assignment Level II, individuals must have, after meeting the minimum requirements described above, at least one year of satisfactory service as a Scientist (Radiation Control) AL I with the City of New York, or at least one additional year of satisfactory full-time professional experience in the field of health physics, radiological health, or radiation hygiene.