Job Description and Duties Candidates in one of these classifications, where a Master’s Degree is required to meet the minimum qualifications, shall receive an educational pay differential equivalent to 2% of their monthly base pay. Those where a Doctoral Degree is required to meet the minimum qualifications, shall receive an educational pay differential equivalent to 3% of their monthly base pay. Individuals with both a Master’s and Doctoral Degree will be given the best benefit in relation to salary shall only be eligible for only one amount.The candidate works under the general direction of the Chief of the Air Quality Section-Investigations Unit (Research Scientist Supervisor I).  The Research Scientist III (RS III) conduct