22. The days specified are—
(a)where every person who made a third party representation has waived (in writing) his or her opportunity to object before the end of the 21 day period, the day on which the last person waived his or her opportunity;
(b)where no objections have been made to the Scottish Ministers, the day on which the 21 day period expires;
(c)where Scottish Ministers have received an objection within the 21 day period—
(i)the day on which SEPA receives written notice from the Scottish Ministers confirming that the Scottish Ministers do not intend to direct SEPA to refer the application or SEPA initiated variation to them for their determination; or
(ii)where no such notice has been received from the Scottish Ministers, the day falling 28 days after the day on which the 21 day period expired;
(d)where the Scottish Ministers have directed SEPA to refer the matter to them for determination, the day on which SEPA receives a direction from Scottish Ministers under paragraph 19(1) to determine the matter in a particular way.