Wash. Rev. Code § 47.68.160
The department is authorized to accept, receive, receipt for, disburse, and expend federal moneys, and other moneys public or private, made available to accomplish, in whole or in part, any of the purposes of this section. All federal moneys accepted under this section shall be accepted and expended by the department upon such terms and conditions as are prescribed by the United States. In accepting federal moneys under this section, the department shall have the same authority to enter into contracts on behalf of the state as is granted to the department under RCW 47.68.090 with respect to federal moneys accepted on behalf of municipalities. All moneys received by the department pursuant to this section shall be deposited in the state treasury, and, unless otherwise prescribed by the authority from which such moneys were received, shall be kept in separate funds designated according to the purposes for which the moneys were made available, and held by the state in trust for such purposes. All such moneys are hereby appropriated for the purpose of which the same were made available, to be disbursed or expended in accordance with the terms and conditions upon which they were made available.
RCW 47.68.160