PSI PRIORITY BAYS
North Olympic Peninsula Regional Background Study
Located on the Strait of Juan de Fuca on the North Olympic Peninsula, Port Angeles Harbor is one of seven bays identified by the Puget Sound Initiative for priority cleanup. In the 2013 revision of the Sediment Management Standards (SMS) rule, Chapter 173-204 WAC, Ecology developed the concept of regional background.
On April 27, 2016 Ecology rolled out Final North Olympic Peninsula Regional Background Sediment Characterization Study. The chemical concentration levels developed in this study will be used to establish the upper cap for sediment cleanup levels, inform cleanup decisions, and identify potential areas of sediment contamination that may require cleanup in the future.
Regional background includes chemical concentrations in sediment from diffuse sources, like regional atmospheric deposition or storm water, that are not primarily linked to a specific source or release.
The North Olympic Peninsula regional background study extends from Port Angeles Harbor in the west to Port Townsend Bay in the east (see map below). The study will help us set future cleanup levels in this region. We will compare regional background chemicals with chemical levels in Port Angeles Harbor. This will help us evaluate options for cleaning up the harbor. In the future, we may also use these regional background levels for comparisons with Port Townsend Bay and other bays along the north Olympic Peninsula.
Learn more! Technical workshops in Port Angeles and Port Townsend April 27th, 2016
Ecology staff will be available to discuss this study and answer questions. Workshops will include a presentation, question and answer session, and open house.
Regional background data and reports:
Regional Background Study Area
Why we did not initially sample in Port Angeles Harbor:
For these reasons we did not initially collect samples or use existing data from Port Angeles Harbor to develop regional background.
We took samples in Dungeness Bay, Sequim Bay, Discovery Bay, and Port Townsend Bay. We used these bays because:
For these reasons we collected sediment samples in Dungeness Bay, Sequim Bay, Discovery Bay, and Port Townsend Bay to develop regional background values for the north Olympic Peninsula.
Acronyms used by the Toxic Cleanup Program
Cleanup Process: Major Steps & Definitions
Data Submittal Requirements for All Cleanup Sites
Toxics Cleanup publications
2013 SMS Rule, Chapter 173-204 WAC
2013 SMS Rulemaking
Bellingham Bay Regional Background Study
Page last updated April 11, 2016
NORTH OLYMPIC PENINSULA STUDY INFORMATION
Public Involvement Coordinator
Port Angeles Library
Port Townsend Library
Washington State Department of Ecology
Please call Susan Baxter at (360) 407-6365 or e-mail firstname.lastname@example.org for an appointment.
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