(2) The terms of the members of the first board shall be determined by lot at their first meeting after their election. The terms of two of the members shall expire June 30 next following the date of the first regular election in the authority. The terms of three of the members shall expire June 30 next following the date of the second regular election in the authority. [1955 c.614 §19; 1971 c.647 §97; 1971 c.727 §§127,196; 1973 c.796 §64; 1975 c.647 §38; 1983 c.350 §271]