When notified of the Division's intention to review a support order, both parents are required to submit a completed income affidavit to the Division within 30 days. The Division shall provide each parent with a blank income affidavit form and instructions for its completion along with the advance notice of review. If a parent does not submit timely a completed income affidavit and there is insufficient reliable information about the parent's income, the Division may presume that the parent has an earning capacity equal to the average weekly wage of a worker within this State as determined by the most recent Department of Labor statistics found at Appendix A of the Manual.
10- 144 C.M.R. ch. 351, § 19-6