MARCH 2012 SACRAMENTO VALLEY WATER QUALITY COALITION Monitoring and Reporting Program Plan Annual Monitoring Report 2011 Prepared by: LARRY WALKER ASSOCIATES Table of Contents Executive Summary ...................................................................................................................... v Summary of Monitoring Program ............................................................................................... v Management Practices and Actions Taken ................................................................................ vi Conclusions and Recommendations ......................................................................................... vii Introduction ................................................................................................................................... 1 Description of the Watershed ...................................................................................................... 3 Monitoring Objectives .................................................................................................................. 4 Sampling Site Descriptions .......................................................................................................... 6 Sampling Site Locations and Land Uses .................................................................................... 7 Site Descriptions ......................................................................................................................... 9 Butte/Yuba/Sutter Subwatershed ............................................................................................ 9 Colusa Glenn Subwatershed ................................................................................................. 10 Lake/Napa Subwatershed...................................................................................................... 10 Pit River Subwatershed ......................................................................................................... 11 Placer/Nevada/South Sutter/North Sacramento Subwatershed ............................................ 11 Sacramento/Amador Subwatershed ...................................................................................... 11 Shasta/Tehama Subwatershed ............................................................................................... 12 Solano/Yolo Subwatershed ................................................................................................... 12 Upper Feather River Watershed............................................................................................ 13 Sampling and Analytical Methods ............................................................................................ 14 Sample Collection Methods ...................................................................................................... 14 Analytical Methods ................................................................................................................... 17 Toxicity Testing and Toxicity Identification Evaluations .................................................... 17 Detection and Quantitation Limits ........................................................................................ 18 Monitoring Results...................................................................................................................... 23 Summary of Sample Events Conducted ................................................................................... 23 Sample Custody ........................................................................................................................ 25 Quality Assurance Results ........................................................................................................ 25 Results of Field and Laboratory QA/QC Analyses............................................................... 25 Summary of Precision and Accuracy .................................................................................... 29 Completeness ........................................................................................................................ 29 Sacramento Valley Water Quality Coalition i October 2010 – September 2011 Annual Monitoring Report Tabulated Results of Laboratory Analyses ............................................................................... 37 Data Interpretation ..................................................................................................................... 38 Summary of Sampling Conditions ............................................................................................ 38 Assessment of Data Quality Objectives .................................................................................... 49 Exceedances of Relevant Water Quality Objectives ................................................................ 49 Toxicity and Pesticide Results .............................................................................................. 53 Other Coalition-Monitored Water Quality Parameters ......................................................... 65 Management Practices and Actions Taken .............................................................................. 72 Response to Exceedances ......................................................................................................... 72 Management Plan Status Update .......................................................................................... 72 Landowner Outreach Efforts..................................................................................................... 72 Targeted Outreach Efforts..................................................................................................... 73 General Outreach Efforts ...................................................................................................... 73 Conclusions and Recommendations .......................................................................................... 74 References .................................................................................................................................... 76 Appendices ................................................................................................................................... 77 List of Appendices Appendix A: Field Log Copies and Photos Appendix B: Lab Reports and Chains-of-Custody Appendix C: Tabulated Monitoring Results Appendix D: Exceedance Reports Appendix E: Site-Specific Drainage Maps Appendix F: SVWQC Outreach Materials Sacramento Valley Water Quality Coalition ii October 2010 – September 2011 Annual Monitoring Report List of Tables Table 1. ILRP Annual Monitoring Report Requirements ............................................................... 1 Table 2. Constituents Monitored, 2011........................................................................................... 5 Table 3. Coalition Monitoring Sites, 2011...................................................................................... 7 Table 4. Coalition 2011 Monitoring Year: Planned Samples, October 2010 – September 2011 . 15 Table 5. Laboratory Method Detection Limit (MDL) and Quantitation Limit (QL) Data Quality Objectives for Analyses of Surface Water for Coalition Monitoring and Reporting Program ............................................................................................................................................... 19 Table 7. Sampling for the 2011 Coalition Monitoring Year ......................................................... 24 Table 8. Summary of Field Blank Quality Control Sample Evaluations for 2011 Coalition Monitoring ............................................................................................................................ 32 Table 9. Summary of Field Duplicate Quality Control Sample Results for 2011 Coalition Monitoring ............................................................................................................................ 33 Table 10. Summary of Method Blank Results for 2011 Coalition Monitoring ............................ 34 Table 11. Summary of Lab Control Spike Results for 2011 Coalition Monitoring ..................... 35 Table 12. Summary of Surrogate Recovery Results for 2011 Coalition Monitoring ................... 35 Table 13. Summary of Lab Duplicate Results for 2011 Coalition Monitoring ............................ 36 Table 14. Summary of Matrix Spike Recovery Results for 2011 Coalition Monitoring .............. 36 Table 15. Summary of Matrix Spike Duplicate Precision Results for 2011 Coalition Monitoring ............................................................................................................................................... 37 Table 16. Summary of Climate Data at Sacramento Executive Airport, October 2010 – September 2011 .................................................................................................................... 39 Table 17. Adopted Basin Plan and California Toxics Rule Objectives for Analytes Monitored for 2011 Coalition Monitoring ................................................................................................... 50 Table 18. Unadopted Water Quality Limits Used to Interpret Narrative Water Quality Objectives for Analytes Monitored for 2011 Coalition Monitoring ....................................................... 51 Table 19. Analytes Monitored for 2011 Coalition Monitoring without Applicable Adopted or Unadopted Limits.................................................................................................................