Whenever any application, appeal or other request filed pursuant
to this chapter has been finally denied on its merits, a second application,
appeal or other request seeking essentially the same relief, whether
or not in the same form or on the same theory, shall not be brought
unless, in the opinion of the officer or board before which it is
brought, substantial new evidence is available or a mistake of law
or fact significantly affected the prior denial.
Any such second application shall include a detailed statement
of grounds justifying consideration of such application.
Such application may be denied summarily and without hearing
on a finding that no grounds appear which warrant a new hearing. In
any case where such application is set for hearing, the applicant
shall be required to establish grounds warranting reconsideration
of the merits of his application prior to being allowed to offer any
evidence on the merits. Unless such grounds are established, the application
may be summarily dismissed for such failure.