Graduate committees, typically consisting of five faculty members with three representing either Biology or Chemistry depending on the student’s concentration, and two from Earth Sciences, Agriculture, or Sociology, ensure the quality of each student’s program. The Environmental Sciences Ph.D. Program Executive Committee meets regularly to discuss the current and future status of the Program, ensure that the Program’s goals are being met, and to formulate potential modifications to the Program. Policies, regulations, and curricular matters originate and are formulated by the graduate faculty of a particular program; principally, environmental sciences faculty from Biology or Chemistry. Following approval by departmental faculty and the Executive Committee, changes are sent to the college curriculum committee and then, if approved, forwarded to the Graduate School Executive Committee for appropriate action.