This layer shows the boundaries of the 9 Habitat Conservation Plan (HCP) Planning Units (PU): Olympic Experimental State Forest, South Coast, North Puget, Columbia, Straits, South Puget, Chelan, Yakima, and Klickitat. They are grouped in three categories based on the differences in the adopted conservation strategies for northern spotted owl: Olympic Experimental State Forest, five Westside PU (South Coast, North Puget, Columbia, Straits, and South Puget,) and three eastside PU (Chelan, Yakima, and Klickitat). The baseline layer HCPUNIT97 was created in 1997 and is located at /database/covers/baseline/hcupunit97. The current layer displays the change in the boundary between Klickitat and Yakima PU as agreed in the HCP Amendment #1 (April, 2004) and the change between the OESF and Straits PU (March 2005).