From the current University Handbook:

The Graduate Policies and Curriculum Committee (GPCC) receive graduate course and program proposals from colleges and departments and ensure their compliance with university policies and goals. In addition, the GPCC approves changes in curriculum, recommends changes in graduate policies and procedures, and monitors assessment of graduate programs.

Link to GPCC in Faculty Handbook (scroll down about half way to "Graduate Policies and Curriculum Committee, GPCC