The Commissioner is hereby authorized to receive federal funds in behalf of, and transmit them to, such applicant. There is hereby established, separate and apart from all public monies of this territory, a Mental Retardation Facilities Construction Fund and a Community Mental Health Centers Construction Fund. Money received from the Federal Government for a construction project under this chapter approved by the Secretary shall be deposited to the credit of the appropriate fund and shall be used solely for payments to applicants for work performed, or purchases made, in carrying out approved projects. Warrants for all payments from these Funds shall bear the signature of the Commissioner or his duly authorized agent for such purpose.