Yes, the Secretary must retain project funds to ensure proper health and safety standards in construction projects. Examples of purposes for which bureaus may retain funds include:

(a) Determining or approving appropriate construction standards to be used in funding agreements;

(b) Verifying that there is an adequate Tribal inspection system utilizing licensed professionals;

(c) Providing for sufficient monitoring of design and construction by the Secretary; and

(d) Requiring corrective action during performance when appropriate.