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Lower Mckenzie River Watershed McKenzie River Watershed Baseline Monitoring Report 2000 to 2009 Karl A. Morgenstern David Donahue Nancy Toth Eugene Water & Electric Board January 2011 ii Acknowledgements The Eugene Water & Electric Board would like to acknowledge the various agencies and organizations that assisted with water quality sampling, providing guidance and input and assisting with the development of this document. McKenzie Watershed Council Water Quality Committee Members McKenzie Watershed Council Larry Six Mohawk Watershed Partnership Jared Weybright Weyerhaueser Company Maryanne Reiter Weyerhaueser Company Bob Danehy International Paper Company Loren Leighton U.S. Forest Service Dave Kreitzing U.S. Forest Service Bonnie Hammond U.S. Bureau of Land Management Steve Liebhardt U.S. Bureau of Land Management Janet Robbins City of Springfield Chuck Gottfried City of Springfield Todd Miller Springfield Utility Board Amy Chinitz Springfield Utility Board Dave Embleton Retired from Springfield Utility Board Chuck Davis Oregon Dept. of Environmental Quality Chris Bayham Springfield School District Stuart Perlmeter Army Corps of Engineers Greg Taylor Eugene Water & Electric Board Karl Morgenstern Eugene Water & Electric Board David Donahue Eugene Water & Electric Board Nancy Toth Partners Providing Sampling Support, Database Support and Document Review U.S. Forest Service Mike Cobb U.S. Forest Service David Bickford City of Springfield Shawn Krueger Eugene Water & Electric Board Jared Rubin Eugene Water & Electric Board Bob DenOuden Eugene Water & Electric Board Steve Newcomb Lane Council of Governments Bob Clayton U.S. Geological Survey Chauncey Anderson iii iv Table of Contents Acknowledgements ........................................................................................................................ iii Table of Contents ............................................................................................................................ v Executive Summary ..................................................................................................................... viii 1 BACKGROUND .................................................................................................................... 1 2 PURPOSE AND OBJECTIVES ............................................................................................. 7 2.1 Purpose of Watershed Baseline Monitoring ................................................................... 7 2.2 Baseline Monitoring Objectives ..................................................................................... 7 3 SCOPE OF BASELINE MONITORING EFFORTS ............................................................. 8 3.1 Scope of McKenzie Watershed Baseline Monitoring (DEQ) ......................................... 8 3.2 Scope of McKenzie Watershed Baseline Monitoring (MWC and EWEB) .................... 8 3.3 Summary of Other Monitoring Efforts in the McKenzie Watershed ............................. 9 3.3.1 EWEB/USGS Storm Event Monitoring ....................................................................... 9 3.3.2 MWC/Springfield School District Stormwater Sampling ......................................... 10 3.3.3 MWC/Springfield School District Camp Creek Basin Sampling .............................. 11 3.3.4 EWEB Septic System Cluster Monitoring ................................................................. 11 3.3.5 EWEB/USGS Organic Carbon and Disinfection By-Product Formation Study ...... 13 3.3.6 EWEB/USGS Passive Sampling Efforts .................................................................... 13 4 OVERVIEW OF BASELINE MONITORING PARAMETERS ........................................ 14 4.1 Baseline Monitoring Pollutant Characteristics ............................................................. 14 4.1.1 Metals ........................................................................................................................ 14 4.1.2 Nutrients .................................................................................................................... 16 4.1.3 Total Organic Carbon............................................................................................... 16 4.1.4 Dissolved Oxygen and Biochemical Oxygen Demand .............................................. 17 4.1.5 Total Suspended Solids and Turbidity ...................................................................... 17 4.1.6 Conductivity .............................................................................................................. 18 4.1.7 Coliform Bacteria ..................................................................................................... 18 5 BASELINE SAMPLING AND DATA ANALYSIS APPROACH ..................................... 20 5.1 Sample Collection Methodology .................................................................................. 20 5.2 Sample Number, Type, and Location ........................................................................... 21 5.2.1 Upper McKenzie River Basin Monitoring Sites (E182 and E170) ........................... 21 5.2.2 South Fork McKenzie Basin (E480, E482) ............................................................... 21 5.2.3 Blue River at McKenzie Highway Bridge (E540) ..................................................... 22 5.2.4 McKenzie River at Holden Creek (E060) ................................................................. 22 5.2.5 McKenzie River at Hendricks Park (E020) .............................................................. 22 5.2.6 Camp Creek at Camp Creek Road (E310) ................................................................ 22 5.2.7 Cedar Creek at Saunders Bridge (E210) .................................................................. 23 5.2.8 Keizer Slough at SUB Bridge (E810)........................................................................ 23 5.2.9 McKenzie River at Hayden Bridge (EWEB Intake) (E010) ...................................... 23 5.2.10 Mohawk River Basin (E01M and E02M) .............................................................. 24 5.3 Decontamination Procedures ........................................................................................ 24 5.4 Quality Assurance/Quality Control Samples ................................................................ 24 5.5 Analytical Parameters ................................................................................................... 25 v 5.6 Data Analysis – Methods, Approaches and Limitations ............................................... 25 6 SUMMARY OF MONITORING RESULTS ....................................................................... 29 6.1 Baseline Monitoring Results ......................................................................................... 29 6.1.1 Baseline Metals Results ............................................................................................ 30 6.1.2 Baseline Nutrients Results ........................................................................................ 35 6.1.3 Baseline Bacteria Results ......................................................................................... 48 6.1.4 Baseline General Water Quality Parameter Results ................................................ 55 7 CONCLUSIONS AND RECOMMENDATIONS ............................................................... 66 7.1 Conclusions ................................................................................................................... 66 7.2 Recommendations ......................................................................................................... 68 REFERENCES Appendices Appendix A – Quality Assurance Project Plan Appendix B – Abbreviations, Acronyms and Units of Measure Appendix C – Analytical Data Figures Figure 5-1: Boxplot Explanation .................................................................................................. 28 Figure 6-1a: Distribution of Total Copper Detections .................................................................. 31 Figure 6-1b: Distribution of Total Chromium Detections ............................................................ 32 Figure 6-1c: Distribution of Total Zinc Detections ...................................................................... 32 Figure 6-2: Summary of Barium Levels from Upstream to Downstream .................................... 33 Figure 6-3: Summary of Barium Levels in the Mainstem McKenzie River ................................. 33 Figure 6-4: Summary of Manganese Levels from Upstream to Downstream .............................. 34 Figure 6-5: Summary of Manganese Levels in the Mainstem McKenzie River .......................... 35 Figure 6-6a: Distribution of Ammonia-Nitrogen Detections ........................................................ 37 Figure 6-6b: Distribution of TKN Detections ............................................................................... 37 Figure 6-7: Distribution of Nitrate/Nitrite Detections .................................................................. 38 Figure 6-8a: Nitrate Trends in Cedar Creek, 2002-2009 .............................................................. 38 Figure 6-8b: Nitrate Trends in Camp Creek, 2002-2009 .............................................................. 39 Figure 6-9: Summary of Orthophosphate Levels from Upstream to Downstream ....................... 40 Figure 6-10: Summary of Orthophosphate Levels in the Mainstem McKenzie ........................... 41 Figure 6-11: Summary of Phosphorus Levels
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