Project Title & Description
Modeling PCB/PBDE Loadings Reduction Scenarios for the Lake Washington Watershed
This project will develop a dataset and models to enable management prioritization of major persistent bioaccumulative toxins (PBT) pathways (combined sewer overflow, stormwater, road runoff, river input, and air deposition) to the lake Washington watershed and Puget Sound via the Chittenden Locks. Mass loadings of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) will be estimated from existing and new data collected by this project. Box and bioaccumulation models developed to enable evaluation of PBT pathway needing control to reach safe levels in fish. Other outcomes are total loadings of PCBs and PBDEs to Puget Sound, relative contributions of these compounds from major pathways to Lake Wasington, and remaining data gaps.