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Lake Washington Watershed PCB and PBDE Loadings Field Study And Lake Washington Watershed PCB and PBDE Loadings Field Study Quality Assurance Project Plan Part of the Study: Modeling PCB/PBDE Loadings Reduction Scenarios for the Lake Washington Watershed March 2011 FINAL Alternate Formats Available 206-296-7380 TTY Relay: 711 Lake Washington Watershed PCB and PBDE Loadings Field Study Quality Assurance Project Plan Prepared by: King County Department of Natural Resources and Parks Water and Land Resources Division Seattle, WA 98104 Lake Washington Watershed PCB and PBDE Loadings Field Study: FINAL QAPP Prepared for United States Environmental Protection Agency and King County Department of Natural Resources and Parks R~~QAOffice r Gina Grepo-Grove, EPA Region 10, QA Manager Michael Cox, EPA Region 10, Technical Officer Melissa Whjtakcr, EPA Region 10, Project Officer Disclaimer: This project has been funded wholly or in part by the United States Environmental Protection Agency under assistance agreement PC-001285-01 to King County. The contents ofthis document do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. King County March 2011 THIS PAGE INTENTIONALLY LEFT BLANK Lake Washington Watershed PCB and PBDE Loadings Field Study: FINAL QAPP Table of Contents Abstract ........................................................................................................................................ viii 1.0. Introduction ................................................................................................................. 1 1.1 Study Need .................................................................................................................. 1 1.2 Study Area ................................................................................................................... 2 1.3 Historical Data Review ............................................................................................... 5 1.3.1 Ambient Water Data .....................................................................................................5 1.3.2 Stormwater Data ...........................................................................................................5 1.3.3 Combined Sewer Overflow Data .................................................................................6 1.3.4 Highway Runoff Data ..................................................................................................6 1.3.5 Air deposition Data ......................................................................................................7 1.3.6 Ambient Sediment Data ...............................................................................................7 1.3.7 Fish Tissue Data .........................................................................................................11 1.3.8 YSI Lake Buoy Data ..................................................................................................12 1.3.9 Existing Data Summary ..............................................................................................12 2.0. Data Quality Objectives ............................................................................................ 13 2.1 Precision, Accuracy, and Bias ................................................................................... 13 2.2 Representativeness .................................................................................................... 15 2.3 Completeness ............................................................................................................. 16 2.4 Comparability ............................................................................................................ 16 2.5 Sensitivity .................................................................................................................. 16 3.0. Sampling Design ....................................................................................................... 17 3.1 Site Selection ............................................................................................................. 20 3.1.1 Ambient Sites .............................................................................................................22 3.1.2 Stormwater and Highway Runoff ...............................................................................25 3.1.3 CSO ............................................................................................................................25 3.1.4 Atmospheric deposition ..............................................................................................26 3.2 Sampling Methods ..................................................................................................... 27 3.2.1 Ambient Lake Washington and Ship Canal waters ....................................................27 3.2.2 Cedar and Sammamish River Waters .........................................................................27 3.2.3 Tributaries ..................................................................................................................28 King County ii March 2011 Lake Washington Watershed PCB and PBDE Loadings Field Study: FINAL QAPP 3.2.4 Stormwater discharge pipes ........................................................................................28 3.2.5 Combined sewer pipes ................................................................................................29 3.2.6 Direct Road Runoff ....................................................................................................29 3.2.7 Air Deposition ............................................................................................................29 3.2.8 Sampling Station Locations and Sample Identification .............................................30 3.2.9 Sample Acquisition and Analytical Parameters .........................................................30 4.0. Sampling Procedures ................................................................................................. 32 4.1 Sampler Decontamination and Sample Collection .................................................... 32 4.1.1 Ambient Water Samples .............................................................................................32 4.1.2 Autosampling Combined Sewer Pipe, Stormwater Pipe, and Bridge Runoff Samples ......................................................................................................................32 4.1.3 Air Deposition Samples ..............................................................................................33 4.2 Sample Delivery and Storage .................................................................................... 34 4.3 Chain of Custody ....................................................................................................... 35 4.4 Sample Documentation ............................................................................................. 35 4.5 Acceptance of Supplies and Consumables ................................................................ 36 4.6 Field Measurements .................................................................................................. 36 4.7 Field Instrument Testing, Inspection, Calibration and Maintenance Frequencies .... 37 4.8 Field Replicates ......................................................................................................... 37 4.9 Field and Equipment Blanks ..................................................................................... 37 4.10 Bulk Deposition Field QC ......................................................................................... 38 4.10.1 Dry Deposition QC Samples ......................................................................................38 4.10.2 Wet Deposition QC Samples ......................................................................................44 5.0. Analytical Methods and Detection Limits ................................................................. 45 5.1 PCB Congeners in Waters and QC Wipe Samples (i.e. Solids) ................................ 46 5.2 PBDE Congeners in Waters and QC Wipe Samples (i.e. Solids) ............................. 53 5.3 Conventionals ............................................................................................................ 54 5.4 Laboratory Instrument Testing, Inspection, Calibration and Maintenance Frequency . ................................................................................................................................... 56 6.0. Special Training and Certification ............................................................................ 57 7.0. Data Validation, Reporting and Record Keeping ...................................................... 58 7.1 Data Validation .......................................................................................................... 58 7.2 Reporting ................................................................................................................... 58 King County iii March 2011 Lake Washington Watershed PCB and PBDE Loadings Field Study: FINAL QAPP 7.3 Record Keeping and Data Management .................................................................... 58 7.4 Assessments and Response Actions .......................................................................... 59 8.0. Project Responsibilities ............................................................................................
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