Roof Runoff Study

PTMSC volunteers sampled 10 residential roofs in the Port Townsend area. Partners at the University of Washington Tacoma’s Center for Urban Waters analyzed samples for a panel of industrial chemicals known to be toxic to marine life. Data is owned and managed by PTMSC. 


Lead project staff: Jamie Montague, Citizen Science Coordinator, PTMSC

Project support: The project was funded by The United States Environmental Protection Agency

How was the data captured? Volunteers scoped potential roofs, collected roof profile data, and collected roof runoff samples. During the sampling event, environmental observations were also recorded on field data sheets. All field data is stored on file at PTMSC. Sample analysis was completed by the University of Washington Tacoma and electronic copies of the results are stored at PTMSC.

Frequency of sampling: Two rain events were sampled, one in Fall of 2013 and one in Fall of 2014.

Is it replicable? Yes. Project sampling protocol is replicable with a different rain event, season, year, etc. A special consideration is that the data was dependent on a single rain event which cannot be replicated.

Data users: Port Townsend Community members, visitors to exhibits and website. Participants in a Be A Toxic Free Zone program.

Who were the key partners? The University of Washington Tacoma’s Center for Urban Waters, Seattle Aquarium

Revision history: At this point, there have not been any revisions to the project protocols or data.

Is this data open source? Due to data sensitivity, the raw data from this project is not available to the general public. Considerations will be made on a case by case basis. A summary of results is available to the general public.

*All references to and citations of the Roof Runoff Study data, the summary of data, and published conclusions should be written as follows: Port Townsend Marine Science Center, Citizen Science Program, 2014.

RESULTS TEXT: A summary of results is available in our Spring 2015 Citizen Science Report (see page 4 and 5).