Davis-Bacon: Approval of unfunded self-insured fringe benefit plan

[Guest Pennysaver]

29 CFR § 4.171(b)(2) states a contractor may request approval by the Administrator of an unfunded self-insured fringe benefit plan in order to allow credit for payments under the plan to meet the fringe benefit requirements of the Davis-Bacon Act.

Has anyone gone through this approval process? If so, what is the official procedure, and what is required to be submitted to the Administrator? And how long does the process take? I have been unable to find a detailed description of the process on the Department of Labor's Wage and Hour Division website.

Thanks!