Ecology, working with a Steering Committee of Eastern Washington Phase II National Pollutant Discharge Elimination System (NPDES) permittees, completed a 2019 update of the Stormwater Management Manual for Eastern Washington. RKI helped incorporate the latest advances in design, construction, and maintenance techniques for conventional and Low Impact Development stormwater BMPs into the manual and provided team facilitation and public outreach, helping to gather and incorporate necessary inputs for successful use of the manual.