Hall. Construction of the new Sawyer Library was completed in 2014, after which the old Sawyer Library was razed. After several years of planning, the college decided to group undergraduates starting with the Class of 2010 into four geographically coherent clusters, or "Neighborhoods". Since the fall of 2006, first-years have been housed in Sage Hall, Williams Hall and Mission Park, while the former first-year dormitories East College, Lehman Hall, Fayerweather, and Morgan, joined the remaining residential buildings as upperclass housing. During the spring 2009 semester, a committee formed to evaluate the neighborhood system, and released a report the following fall. From 2003 through 2008, Williams conducted a capital campaign with the goal of raising $400 million by September 2008. The college reached $400 million at the end of June 2007. By the close of the campaign, Williams had raised $500.2 million. As of the 2008-09 school year, the college eliminated student loans from all financial aid packages in favor of grants. The college was the fourth institution in the United States to do so, following Princeton University, Amherst College, and Davidson College. However, in February 2010, the college announced it would re-introduce loans to its financial aid packages beginning with the Class of 2015 due to the college's changed financial situation. In January 2007 the board voted unanimously to reduce college CO2 emissions 10% below 1990 levels by 2020, or roughly 50% below 2006 levels. To meet those goals, the college set up the Zilkha Center for Environmental Initiatives and has undertaken an energy audit and efficiency timeline. Williams received an 'A−' on the 2010 College Sustainability Report Card, following 'B+' grades on both the 2008 and 2009 report cards. In December 2008, President Morton O. Schapiro announced his departure from the college to become president of Northwestern University. On September 28, 2009, the presidential search committee announced the appointment of Adam Falk as the 17th president of Williams College. Falk, dean of the Zanvyl Krieger School of Arts and Sciences at Johns Hopkins University, began his term on April 1, 2010. Dean of the Faculty William G. Wagner took the position of interim president beginning in June 2009, and continued in that capacity until President-elect Falk took office. In 2014, Williams College brought their endowment above the 2 billion dollar mark. On March 11, 2018, former Dean of the College at Brown University Maud Mandel was selected to be