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SUBJECTSENVIRONMENT › State Environmental Policy Act (SEPA)

State Environmental Policy Act

The State Environmental Policy Act (SEPA), Washington State's most fundamental environmental law, was enacted in 1971 as chapter 43.21C RCW. SEPA's basic policy of maintaining and improving environmental quality is implemented primarily through extensive procedural requirements designed to insure that governmental agencies give proper consideration of environmental matters in making decisions on actions, whether proposed by private parties or the governmental entities themselves, that may impact the environment. If initial governmental review of a proposed action indicates that the action will have probable and significant adverse environmental impacts, preparation of a detailed environmental impact statement (EIS) will be required. The procedural requirements governing this environmental review process are contained in detailed regulations enacted by the Department of Ecology in chapter 197-11 WAC.


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