(1) The number of persons involved or to be affected is so large that individual participation is rendered impracticable;
(2) There are questions of law or fact common to the individual petitions or rights to be determined;
(3) The group petitioner rights to be determined are typical of the affected persons’ petitions or rights; and
(4) The entire group will be adequately represented in the consolidation. [2007 c.445 §15]