After initial implementation, green procurement policies and programs should be reviewed regularly to assess overall effectiveness. Reviews should ensure that policies and programs are meeting the organization’s current needs and continue to reflect the organization’s environmental goals. Regular reviews can strengthen a green procurement policy by incorporating new information (products, services, vendors, technology, etc.) that becomes available, updating goals, and shifting roles and responsibilities of staff and departments to increase the efficiency and effectiveness of the program. San Jose County requires that its procurement policy and program be reviewed every three years, for example.