The Alabama Department of Environmental Management (ADEM) will conduct a public hearing for the purpose of revising water quality criteria and establishing standards of quality for surface waters of the state. The Department proposes to amend ADEM Administrative Code rule 335-6-10-.07 by adding a relative source contribution factor to the equations used to calculate human health criteria for non-carcinogenic pollutants. Also, in response to a resolution adopted by the Environmental Management Commission, the Department proposes to amend rule 335-6-10-.07 by changing the risk level used to calculate human health criteria for all carcinogens except arsenic. In addition, the text describing the factors used in Equations 16, 17, 18, and 19 is being formatted to provide clarity. The hearing will be held March 19, 2008. Comments are due March 19, 2008. http://www.adem.state.al.us//PubHearings/Div6/Div610-11.doc.