Basic in Portland (OR)-Vancouver metropolitan areas. Enhanced in Seattle, Spokane and Tacoma metropolitan areas. Current program: Centralized, contractor-run, test-only, low-enhanced I/M program operating on a biennial basis in the Seattle and Tacoma areas, Spokane and Vancouver. Proposed: No change in the current low-enhanced I/M program in the Seattle-Tacoma area. Proposing to implement ASM 2525 in Spokane and Vancouver, as well as a gas cap pressure test in Vancouver.