RCW 39.10.480

This chapter shall not be construed to affect or modify the existing statutory, regulatory, or charter powers of public bodies except to the extent that a procedure authorized by this chapter is adopted by a public body for a particular public works project. In that event, the normal contracting or procurement limits or requirements of a public body as imposed by statute, ordinance, resolution, or regulation shall be deemed waived or amended only to the extent necessary to accommodate such procedures for a particular public works project.