The University of California, Berkeley oak grove controversy arose over the planned removal of a grove of oak trees in preparation for the construction of a new student athletic training center for the University of California, Berkeley.[1][2] The university's actions sparked three lawsuits, as well as a tree sit-in that ran from December 2006 to September 2008, when the trees in question were finally cut down.[3][4][5] Berkeley municipal law prohibits removing any coast live oak with a trunk larger than six inches within city boundaries, but city boundaries do not include the university and the university further claimed an exemption to the city law as a state agency.[6]