Stormwater Action Monitoring — source identification

SAM's source control projects are focused on learning which actions by permittees and businesses in Western Washington are successful in preventing illicit discharges, detecting and reducing pollutants to stormwater. Source control projects can include monitoring but can also have a broader focus to provide information for adaptive management of stormwater. The Stormwater Work Group (SWG) organizes permittees and stakeholders to select the SAM study topics.


What is the process for new projects?

In 2019, SAM held a third round call for proposals for effectiveness studies and source identification studies or projects to support the implementation of the National Pollutant Discharge Elimination System (NPDES) Phase I and Western Washington Phase II Municipal Stormwater Permits. The SWG-approved studies will be funded during this current 2019-2024 permit term. See the effectiveness studies page for more information on the round 3 proposals. 

Training videos for ICID field screening

A King County-led SAM project recently published the 2020 update to the Illicit Connection and Illicit Discharge Field Screening and Source Tracing Manual (IC-ID Manual), and created several new IDDE field training videos. Download a copy of the updated 2020 manual and worksheets and find the Washington Stormwater Center's YouTube channel for all the training videos: Washington Stormwater Center's - Illicit connection and illicit discharge webpage.

Completed SAM source identification studies

SAM source ID projects can occur at site or regional scales and the results can be used across jurisdictions.