29 C.F.R. § 35.32
(a) Referral to mediation. CRC will promptly refer to the Federal Mediation and Conciliation Service or the mediation agency designated by the Secretary of Health and Human Services under 45 CFR part 90, all complaints that:
(e) Maximum time period for mediation. The mediation shall proceed for a maximum of 60 days after a complaint is filed with CRC. This 60-day period may be extended by the mediator, with the concurrence of the Director, for not more than 30 days, if the mediator determines that agreement is likely to be reached during the extended period. In the absence of such an extension, mediation ends if:
(2) Prior to the end of the 60-day period, either