Skykomish River Temperature Prescriptive Total Maximum Daily Load Development Water Quality Study Design
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Skykomish River Temperature Total Maximum Daily Load Development Water Quality Study Design (Quality Assurance Project Plan) January 2013 Publication No. 13-03-104 (Ecology) Publication No. Tt DCN QAPP 339 (Tetra Tech) Skykomish River Temperature Publication No. 13-03-104 TMDL Development QAPP Tt DCN QAPP 339 Publication and Contact Information Each study conducted by the Washington State Department of Ecology (Ecology) must have an approved Quality Assurance Project Plan (QAPP). The plan describes the objectives of the study and the procedures to be followed to achieve those objectives. After completing the study, Ecology will post the final report of the study to the Internet. The plan for this study is available on the Department of Ecology’s website at https://fortress.wa.gov/ecy/publications/summarypages/1303104.html Authors: Ralph Svrjcek (Ecology) Amy King, Ron Steg, Mark Sievers, and John O’Donnell (Tetra Tech) Communications Consultant: Phone 360-407-6834. Washington State Department of Ecology – www.ecy.wa.gov/ o Headquarters, Olympia 360-407-6000 o Northwest Regional Office, Bellevue 425-649-7000 United States Environmental Protection Agency – www.epa.gov Study Codes Activity Tracker Code (Environmental Assessment Program) is 12-065. Total Maximum Daily Load (TMDL) Study Code (Water Quality Program) is SkyR07TM. Federal Clean Water Act 2008 and proposed 2010 303(d) Listings Addressed in this Study Water body Parameter Medium Listing ID 303(d) list Temperature Water 35165 2008 Bear Creek Temperature Water 35163 2008 Beaver Creek Temperature Water 35166 2008 Olney Creek Temperature Water 35296 2008 Pekola Creek Temperature Water 35297 2008 Skykomish River Temperature Water 6569 2008 Unnamed Cr. (Tributary to Olney Cr.) Temperature Water 35169 2008 Wallace River Temperature Water 7435 2008 Cover photo: Skykomish River at the confluence with the North Fork Any use of product or firm names in this publication is for descriptive purposes only and does not imply endorsement by the author or the Department of Ecology. If you need this document in a format for the visually impaired, call 360-407-6834. Persons with hearing loss can call 711 for Washington Relay Service. Persons with a speech disability can call 877-833-6341. Page 2 of 87 Skykomish River Temperature Publication No. 13-03-104 TMDL Development QAPP Tt DCN QAPP 339 Skykomish River Temperature Total Maximum Daily Load Development Water Quality Study Design (Quality Assurance Project Plan) January 2013 Approved by: Signature: Date: January 2013 Ralph Svrjcek, Client, WQP, Northwest Regional Office Signature: Date: January 2013 Teizeen Mohamedali, Technical Lead, EAP, Bellingham Field Office Signature: Date: January 2013 Amy King, Tetra Tech Task Order Leader Signature: Date: January 2013 Ron Steg, Tetra Tech Project Manager Signature: Date: January 2013 John O’Donnell, Tetra Tech Quality Assurance Officer Signature: Date: January 2013 Jonathan Butcher, Tetra Tech Modeling Quality Control Officer Signature: Date: January 2013 Laurie Mann, Technical Lead, EPA Region 10 Signature: Date: January 2013 Jayne Carlin, Task Order Manager, EPA Region 10 Signature: Date: January 2013 Gina Grepo-Grove, Quality Assurance Manager, EPA Region 10 Signatures are not available on the Internet version WQP: Water Quality Program EAP: Washington State Department of Ecology Environmental Assessment Program EPA: U.S. Environmental Protection Agency Page 3 of 87 Skykomish River Temperature Publication No. 13-03-104 TMDL Development QAPP Tt DCN QAPP 339 Table of Contents Page List of Figures ......................................................................................................................6 List of Tables .......................................................................................................................7 Abstract ................................................................................................................................8 What is a Total Maximum Daily Load (TMDL)? ...............................................................9 Federal Clean Water Act Requirements ........................................................................9 TMDL Process Overview ............................................................................................10 Who Should Participate in this TMDL? ......................................................................10 Elements the Clean Water Act Requires in a TMDL ..................................................10 Why is Ecology Conducting a TMDL Study in This Watershed?....................................12 Background ..................................................................................................................12 Study Area ...................................................................................................................13 Beneficial Uses ............................................................................................................13 Impairments Addressed by this TMDL .......................................................................15 How Will the Results of This Study be Used? ............................................................15 Water Quality Standards and Numeric Targets .................................................................17 Temperature .................................................................................................................17 Global Climate Change ................................................................................................20 Watershed Description .......................................................................................................21 Geographic Setting.......................................................................................................21 Potential Sources of Contamination.............................................................................29 Historical Data Review ......................................................................................................37 Water Temperature Data ..............................................................................................37 Streamflow Data ..........................................................................................................56 LiDAR Data .................................................................................................................59 Goals and Objectives .........................................................................................................61 Project Goal .................................................................................................................61 Study Objectives ..........................................................................................................61 Study Design ......................................................................................................................62 Overview ......................................................................................................................62 Technical Analysis Framework ...................................................................................62 Sampling Procedures .........................................................................................................67 Measurement Procedures ...................................................................................................67 Quality Objectives .............................................................................................................68 Measurement Quality Objectives .................................................................................68 Representative sampling ..............................................................................................68 Completeness ...............................................................................................................68 Quality Objectives for Modeling or other Analysis .....................................................68 Page 4 of 87 Skykomish River Temperature Publication No. 13-03-104 TMDL Development QAPP Tt DCN QAPP 339 Quality Control ..................................................................................................................69 Laboratory ....................................................................................................................69 Field .............................................................................................................................69 Corrective Actions .......................................................................................................69 Data Management Procedures ...........................................................................................70 Data Management for Environmental Data .................................................................70 Data Management for Modeling or other Analysis .....................................................70 Audits and Reports .............................................................................................................71 Data Quality (Usability Assessment) .................................................................................72 Usability of Results from Modeling or Other Analysis ...............................................72 External Data Usability ................................................................................................74 Project Organization ..........................................................................................................77