With staff of 1,000, the Division covers a broad range of subject matter, including oversight of environmental investigations, lead poisoning, prevention, occupational health, food safety, childcare, radiation control, recreational and drinking water quality, air quality, climate health, vector control, veterinary public health, and pest control. A four-year high school diploma or its educational equivalent approved by a state's department of education or a recognized accrediting organization and four years of satisfactory full-time progressively responsible clerical/administrative experience including one year of the administrative supervisory experience as described in "1" above; or.