Linfield President Thomas Hellie appointed the ACES committee (Advisory Committee on the Environment and Sustainability) in September 2007. The charge given to the committee by President Hellie consisted of six tasks:
ACES urged President Hellie to sign the American College and University Presidents' Climate Commitment, and he did so on Earth Day, 2008. ACES then proceeded to address the remaining tasks and, at the end of spring semester 2009, the group endorsed the second major commitment of the Presidents Climate Commitment, the Greenhouse Gas Emissions Report, which was submitted in September 2009. ACES continues to guide Linfield's sustainability effort.