Substitution: Successful completion of graduate coursework from a regionally accredited college or university with a major in environmental studies, geography, archaeology, natural science, geology, biology, chemistry, physics, engineering/engineering technology, or a related field may substitute for two (2) years of the required non-supervisory experience through an established formula. TRAINING/EDUCATION: Bachelor's degree from a regionally accredited college or university with a major in environmental studies, geography, archaeology, natural science, geology, biology, chemistry, physics, engineering/engineering technology, or a related field.