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| Title | Quality Assurance Project Plan: Control of Toxic Chemicals in Puget Sound Phase 3: Characterization of Toxic Chemicals in Puget Sound and Selected Major Tributaries | |||
| Month-Year Published | August 2009 | |||
| Online Availability |
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| Short Description |
This is the study plan for Control of Toxic Chemicals in Puget Sound Phase 3: Characterization of Toxic Chemicals in Puget Sound and Selected Major Tributaries. (Also see abstract below) | |||
| Publication Number | 09-03-118 | |||
| Author(s) | Coots, R., and D. Osterberg | |||
| Print Availability | ||||
| Number of pages | 68 pp. | |||
| Keywords | basin, characterization, chemical, Chemicals, Ecology, internet, loading, model, ocean, partnership, Puget Sound, quality, quality assurance, quality assurance project plan, river, toxic, toxics, water | |||
| Subject Waterbodies |
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| Abstract | Long Description |
The Puget Sound Partnership identified the control and reduction of toxic chemicals entering Puget Sound as vital to the ecosystem′s recovery and maintenance. In a multi-phase effort to develop source-control strategies for toxic contaminants, the Puget Sound Toxics Loading Analysis (PSTLA) will quantify concentrations within, and loadings to, Puget Sound, ultimately guiding management decisions. Existing data were used to estimate chemical loadings during Phase 1 of the PSTLA. Phase 2 efforts included development of the Puget Sound Toxics Box Model to simulate chemical fate, transport, and bioaccumulation. This numerical model gives managers the ability to evaluate impacts on water, sediment, and biota under different control strategies. Initial modeling exercises indicated that additional data on toxic chemical concentrations in the marine water column, oceanic boundary waters, and major rivers discharging to Puget Sound were needed to reduce uncertainty in the model outputs. For the present study, the Washington State Department of Ecology (Ecology) will collect seasonal water samples (June, September, and December of 2009) at three oceanic boundary sites, in four Puget Sound basins, and at the mouths of the five largest rivers discharging to the Sound. Water samples will be collected above and below the halocline at marine stations, and above tidal influence at river sampling sites. Suspended particulates will be collected during one event from the four Puget Sound basin stations and the five major rivers. Target analyses will include metals, semivolatile organics, chlorinated pesticides, polynuclear aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). This information will fill identified data gaps, providing concentration and loading estimates for model input and calibration. Each technical study conducted by Ecology must have an approved Quality Assurance Project Plan. The plan must describe the objectives of the study and the procedures to be followed to achieve those objectives. After completion of the study, a final report describing the study results will be posted to the Internet. |
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This page last updated August 26, 2009
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