Senior Engineering Technician: Either 1. two years of experience assisting in engineering, engineering technology, engineering management technology, architecture or architectural technology, environmental technology, electronics, electronics technology, landscape design, materials laboratory technology, drafting or surveying; and graduation from high school or possession of an equivalent diploma; Or 2. an associate degree in mathematics, physical science, geology, engineering or engineering technology, architecture or architectural technology, construction technology, environmental technology, landscape architecture/design, drafting, forestry, surveying, aeronautics, electronics, or electronics technology. Substitution: Substitution: a certificate in CAD/CAM, construction technology, drafting, engineering, engineering graphics or electronics, may substitute for one year of the experience; or 36 semester college credit hours in mathematics, physical science, geology, engineering or engineering technology, architecture or architectural technology, construction technology, environmental technology, landscape architecture or landscape design, drafting, forestry, surveying, aeronautics, electronics or electronics technology may substitute for experience at the rate of 18 semester credit hours equaling one year of experience.