Graduation from high school or possession of an equivalency diploma, plus EITHER: (A) Graduation with a Bachelor's degree in a natural science including successful completion of at least twelve (12) semester credit hours* in Chemistry; OR, (B) Graduation with an Associate's degree in a natural science including successful completion of at least twelve (12) semester credit hours* in Chemistry, plus one (1) year paid full-time or its part-time equivalent experience in laboratory testing, examination, and/or analysis in an environmental laboratory; OR, (C) Graduation with an Associates degree or successful completion of at least sixty (60) college semester credit hours , both of which must include successful completion of at least twelve (12) semester credit hours in Chemistry, plus two (2) years paid full-time or its part-time equivalent experience as defined in (B) above; OR, (D) An equivalent combination of education* and experience as defined by the limits of (A), (B), and (C) above. Candidates who meet the minimum qualifications above must submit, at the time of application, a student or official copy of a college transcript or itemized list of course work and credits received.