RKI is providing permit support, development review, engineering standards updates, and stormwater management planning for the Seattle-Tacoma International Airport (STIA) under the Port of Seattle’s Indefinite Delivery Indefinite Quantity (IDIQ) Environmental Review and Permitting Services contract. Recent tasks include development of the STIA LID Guideline for compliance with the Airport’s NPDES Individual Permit and Federal Aviation Administration requirements for commercial airport operations, planning for regional infiltration facilities, and assistance with Port policies and strategic goals.