(a) The lead scientist shall nominate, and the authority shall establish, a board of independent scientists, to be known as the Independent Science Board, that shall advise and make recommendations to the authority and the Bay-Delta Public Advisory Committee, as appropriate, on the science relative to implementation of all program elements. (b) The authority may recognize an existing board of independent scientists as members of the board required by this section. (c) The authority shall respond in writing to the advice and reviews prepared by the Independent Science Board.