20210304 08065400 1.0 TRUE Environmental Transition Areas Each environmental zone in the Columbia South Shore contains a protected natural resource and a transition area surrounding the protected resource. https://www.portlandoregon.gov/bps/article/53364 -- Additional Information: Category: Zoning Code Purpose: The purpose of the transition area is to protect the adjacent natural resource. Update Frequency: Infrequent -- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=54435 Bureau of Planning and Sustainability