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?

We want your proposals for effectiveness studies and source identification studies or projects that support the implementation of the National Pollutant Discharge Elimination System (NPDES) Phase I and Western Washington Phase II Municipal Stormwater Permits. Successful, SWG-approved studies will be funded during this current permit term 2019-2024. See the effectiveness studies page for more information. 

Upcoming trainings

Sept. - Nov. 2020: Updates to the Illicit Connection and Illicit Discharges Manual

A King County led SAM project recently published the 2020 update to the Illict Connection and Illicit Discharge Field Screening and Source Tracing Manual (IC-ID Manual) and will host eight opportunities to attend a no cost training on the updated IDDE field methods. These were in-person trainings that are now being adapted so you can participate online.

Visit the following webpages to download your copy of the updated manual and worksheets and for information on registering for the trainings.

Completed SAM source identification studies

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