Every such plan for the assignment of risks involving automobile and motor vehicle bodily injury and property damage liability insurance shall be filed in writing with the superintendent. The superintendent shall review the plan as soon as reasonably possible after filing, to determine whether or not it meets the requirements of section 523 [59A-32-5 N.M. Stat. Ann.] of this article. Each plan shall be on file with the superintendent for a waiting period of thirty (30) days before it becomes effective, unless sooner approved in writing. Unless disapproved in writing by the superintendent within the thirty (30) day waiting period, a plan shall be deemed approved and shall become effective upon the expiration of that period.