(a)(1) The Board of Arbitrators shall not consider the subject of damages for delay until after a decision has been reached on the merits and has been entered on the award form.(2) After the amount of the award has been so entered, the Board shall make a determination as to damages for delay by accepting a sealed envelope containing a stipulation setting forth whether an offer was made in writing and if so, the amount as well as the date of the offer. If no such stipulation is submitted by counsel, the Board shall, following announcement of the award, consider evidence from counsel relating to damages for delay.