Stormwater particle-size distribution & BMP effectiveness study

This literature review project is being conducted by the Washington State Department of Natural Resources (WDNR) with assistance from Evergreen StormH20. The goals are to gather up-to-date information about the size of particles in stormwater, bound contaminants, and the effectiveness of a range of treatment approaches for those particle sizes.

Study questions

Gather information about the different methods to measure particle-size distribution (PSD) and how do they compare?

What is more recently known about characterized sources, and nature of particle sizes and attached pollutants transported in the MS4 or delivered to BMPs?
What is the reported effectiveness of concentration or load reduction by stormwater BMPs as a function of PSD?

Study findings

This study is ongoing until November 2023.

Task 3 Summarize, report, and communicate findings

Deliverable 3.1 Report outline
Deliverable 3.2 Draft flowcharts
Deliverable 3.3 Final flowcharts
Deliverable 3.4 Draft white paper
Deliverable 3.5 Final white paper
Deliverable 3.6 Draft fact sheet
Deliverable 3.7 Final fact sheet
Deliverable 3.8 Final SAM and local conference presentations

Contact information

Chelsea Morris
Stormwater Action Monitoring Coordinator
chelsea.morris@ecy.wa.gov
360-764-0890

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Stormwater particle-size distribution & BMP effectiveness study

Study questions

Study findings

Project tasks and deliverables

Task 1: Project administration and management

Task 2: Literature search and synthesis

Task 3 Summarize, report, and communicate findings

Contact information