The University of Massachusetts Amherst is committed to reducing the environmental impact of campus life and operations. The UMass Amherst Climate Action Plan (CAP), approved in 2010, was the first campus document to identify strategies to help the campus reach carbon neutrality by 2050, a goal to which former UMass President Jack M. Wilson committed the five UMass campuses in 2007 when he signed the American College & University Presidents’ Climate Commitment (ACUPCC). In order to put this commitment into action, Former Chancellor Thomas Cole appointed the Environmental Performance Advisory Committee (EPAC) and charged the committee to implement campus sustainability projects and develop a Climate Action Plan (Chancellor Cole’s Letter: Appendix I). Having been guided by this initial plan for two years and having accomplished many of its initial objectives, EPAC began in February 2012 to prepare an updated CAP: this current document reviews those accomplishments, and presents a comprehensive plan for future sustainability efforts across all aspects of the Campus.