The Department of Ecology has released it's Final 2014 Updates to the Wetland Rating Systems. Final documents are available on Ecology's website: http://www.ecy.wa.gov/programs/sea/wetlands/ratingsystems/index.html
The Cowlitz County Critical Areas Ordinance requires wetlands be delineated using the latest amended version of Ecology's Wetland Rating System. The Washington State Wetland Rating System for Western Washington: 2014 Update must be used for all wetland delineations prepared for review by Cowlitz County starting January 1, 2015.
For more information on the updates, please visit the Department of Ecology's rating system update website: http://www.ecy.wa.gov/programs/sea/wetlands/ratingsystems/2014updates.html