(1) The purpose of this chapter is to establish rules pertaining to the integration of the policies and procedures of the State Environmental Policy Act (SEPA), chapter 43.21C RCW, into the programs, activities, and actions of the department of transportation (hereinafter referred to as the transportation department or the department). The rules contained herein are intended to implement and be consistent with the provisions and purposes of the SEPA guidelines (chapter 197-11 WAC).

(2) These rules are intended to establish procedures for implementing SEPA which reduce duplicative and wasteful practices, establish effective and uniform procedures, encourage public involvement, and promote certainty with respect to the requirements of SEPA.