Not later than the 10th day after the date a proposed adjustment to the maximum liability limits is determined under § 2210.501(a) or (b) or § 2210.502, the association shall file the proposed adjustments with the commissioner in writing. The filing must include:
(1) a statement of the proposed adjusted limits;
(2) a statement of the limits in effect immediately preceding the effective date of the proposed adjustment;
(3) a brief summary of the changes to the BOECKH Index or other index on which the proposed adjustments are based; and
(4) a brief summary of the computations used in determining the proposed adjustments.