Waste Management Administration
Department of Health, Bureau of Sanitary Engineering, 1912-51
Department of Health, Bureau of Environmental Hygiene, Division of Sanitary Engineering, 1951-66
Department of Health, Bureau of Resources Protection, Division of Solid Waste Disposal, 1966-69
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Solid Wastes, 1969-73
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Solid Waste Control, 1973-77
Department of Health & Mental Hygiene, Environmental Health Administration, Community Health Programs, Division of Solid Waste Control, 1977-80
Department of Health & Mental Hygiene, Environmental Health Administration, Toxic Substances Control Programs, 1977-80
Department of Health & Mental Hygiene, Office of Environmental Programs, Waste Management & Enforcement Program, 1980-82
Department of Health & Mental Hygiene, Office of Environmental Programs, Waste Management Administration, 1982-87
Department of the Environment, Waste Management Administration, 1987-88
Department of the Environment, Hazardous & Solid Waste Management Administration, 1988-92
Department of the Environment, Waste Management Administration, 1992-
Water Management Administration
Department of Health, Bureau of Sanitary Engineering, 1912-51
Department of Health, Bureau of Environmental Hygiene, Division of Sanitary Engineering, 1951-66
Department of Health, Bureau of Resources Protection, Division of Water Supply & Sewage Disposal, 1966-69
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Water & Sewerage, 1969-77
Department of Health & Mental Hygiene, Environmental Health Administration, Water Sewerage Control Program, 1977-80
Department of Health & Mental Hygiene, Office of Environmental Programs, Water Sewerage Control Program, 1980-82
Department of Health & Mental Hygiene, Office of Environmental Programs, Water Management Administration, 1982-87
Department of the Environment, Water Management Administration, 1987-
Conservation Commission, 1917-22
Conservation Department, 1922-41
Water Resources Commission of Maryland, 1933-41
Board of Natural Resources, Department of Geology, Mines, & Water Resources, 1941-64
Board of Natural Resources, Water Pollution Control Commission, 1947-64
Board of Natural Resources, Department of Water Resources, 1964-69
Department of Natural Resources, Department of Water Resources, 1969-72
Department of Natural Resources, Water Resources Administration, 1972-92
Department of Natural Resources, Resource Management, Water Resources Administration, 1992-95
Department of the Environment, Water Management Administration, 1995-
Air & Radiation Administration
Department of Health, Bureau of Environmental Hygiene, Division of Industrial Health & Air Pollution, c. 1951-66
Department of Health, Bureau of Resources Protection, Division of Air Quality Control, 1966-69
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Air Quality Control, 1969-77
Department of Health & Mental Hygiene, Environmental Health Administration, Air Quality Programs, 1977-80
Department of Health & Mental Hygiene, Office of Environmental Programs, Air Quality Programs, 1980-83
Department of Health & Mental Hygiene, Office of Environmental Programs, Air Management Administration, 1983-87
Department of the Environment, Air Management Administration, 1987-92
Department of the Environment, Air & Radiation Management Administration, 1992-
Department of Health, Bureau of Environmental Hygiene, Division of Industrial Health & Air Pollution, Radiation Protection Section, 1959-66
Department of Health, Bureau of Consumer Protection, Division of Radiological Health, 1966-69
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Radiological Health, 1969-71
Department of Health & Mental Hygiene, Environmental Health Administration, Division of Radiation Control, 1971-77
Department of Health & Mental Hygiene, Environmental Health Administration, Community Health Programs, Division of Radiation Control, 1977-80
Department of Health & Mental Hygiene, Office of Environmental Programs, Community Health Programs, Division of Radiation Control, 1980-87
Department of the Environment, Toxics, Environmental Science & Health, Center for Radiological Health, 1987-89
Department of the Environment, Toxics, Environmental Science & Health Administration, Radiological Health Program, 1989-92
Department of the Environment, Air & Radiation Management Administration, 1992-
Technical & Regulatory Services Administration
Department of Health & Mental Hygiene, Water Management Administration, Division of Standards & Certification, 1985-87
Department of the Environment, Water Management Administration, Division of Standards & Certification, 1987-90
Department of the Environment, Water Management Administration, Water Quality Program, 1990-91
Department of the Environment, Water Management Administration, Water Quality Operation Program, 1991-92
Department of the Environment, Water Management Administration, Standards & Shellfish Sanitation Program, 1992
Department of the Environment, Water Management Administration, Water Quality Program, 1992-95
Department of the Environment, Water Management Administration, Water Quality Monitoring Program, 1990-92
Department of the Environment, Chesapeake Bay & Watershed Management Administration, Water Quality Monitoring Program, 1992-95
Department of the Environment, Emergency Response and Enforcement Coordination, 1992-95
Department of the Environment, Chesapeake Bay & Watershed Management Administration, Environmental Assessment Program, 1992-95
Department of the Environment, Technical & Regulatory Services Administration, 1995-
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