LID Cost Analysis Report

This project provides updated information on the costs of stormwater control measures for typical developments in western Washington, based on the minimum requirements set forth by the Washington State Department of Ecology in the NPDES Phase I and Western Washington Phase II Municipal Stormwater Permits and the 2012 Stormwater Management Manual for Western Washington. The report, presentation, and video address the question "Does the 2012 Stormwater Manual make stormwater management cost more or less than the 2005 Stormwater Manual?"

Cost Analysis Report: LID Requirements and BMPs

Presentation (pdf file): Cost Analysis for Western Washington LID Requirements and Best Management Practices (June 2013)

Presentation Video (June 2013)