; or (2) otherwise to ensure compliance with this section (including regulations promulgated pursuant to this section). (f) Information sharing In carrying out this section, each Federal agency, to the maximum extent practicable and permitted by applicable law, shall share information and eliminate unnecessary duplication of efforts through the use of existing data systems and cooperative agreements among Federal agencies and with State, local, and Tribal governments. 6. National Environmental Justice Advisory Council (a) Establishment The establishment by the Administrator on September 30, 1993, by charter pursuant to the Federal Advisory Committee Act (5 U.S.C. App.) of the National Environmental Justice Advisory Council (referred to in this section as the Advisory Council ) is enacted into law. (b) Duties The Advisory Council may carry out such duties as were carried out by the Advisory Council on the day before the date of enactment of this Act, subject to modification by the Administrator, by regulation. (c) Membership The membership of the Advisory Council shall— (1) be determined and appointed in accordance with, as applicable— (A) the charter described in subsection (a) (or any subsequent amendment or revision of that charter); or (B) other appropriate bylaws or documents of the Advisory Council, as determined by the Administrator