; (ii) units of the National Wildlife Refuge System; (iii) units of the National Estuarine Research Reserve System; and (iv) sensitive ecological areas in which substantive changes are expected from reductions in domestic mercury emissions. (C) Colocation Monitoring sites shall be colocated with sites from other long-term environmental monitoring programs, where practicable, including sites associated with the National Ecological Observatory Network, the Long Term Ecological Research Network, and the National Atmospheric Deposition Program. (D) Monitoring protocols Not later than 1 year after the date of enactment of this Act, the Administrator, in coordination with the Advisory Committee, shall establish and publish standardized measurement protocols for the program. (4) International cooperation To the maximum extent practicable, the program shall be compatible with similar international efforts, including the Arctic Monitoring and Assessment Programme, the Global Earth Observation System of Systems, and the monitoring associated with the effectiveness evaluation of the Minamata Convention on Mercury, adopted October 10, 2013 (TIAS 17–816), which entered into force on August 16, 2017. (5) Data collection and distribution Not later than 1 year after the date of enactment of this Act, the Administrator, in coordination with the Advisory Committee, shall establish— (A) a centralized database for existing and newly collected environmental mercury data that can be freely accessed on the Internet