(a) Main comments shall be postmarked or received no later than the time specified in the Notice of Proposed Rulemaking and shall contain all comments on and criticisms of that Notice by the commenting person, based on information which is or reasonably could have been available to that person at the time.
(b) Reply comments shall be postmarked or received no later than two weeks after the close of all informal hearings on the proposed rule and shall be restricted to comments on:
(1) Other comments;
(2) Material in the hearing record; and
(3) Material which was not and could not reasonably have been available to the commenting party a sufficient time before main comments were due.
(c) Extensions of the time for filing comments may be granted in writing by the Record and Hearing Clerk. Application for an extension shall be made in writing. Comments submitted after the comment period and all extensions of it have expired need not be added to the rulemaking record and need not be considered in decisions concerning the rule. Unless the Notice of Proposed Rulemaking states otherwise, four copies of all comments shall be submitted.