By August 15 of each year, the governing board of each regional center shall submit to the department detailed documentation, as determined by the department, demonstrating that the composition of the board is in compliance with Section 4622. If the composition of the governing board is not in compliance with Section 4622, the governing board shall submit a plan to the department with its board composition documentation setting forth how and, in as expeditious a manner as possible, when the board will come into compliance, in part or in whole, with Section 4622.