Final 2015 Threshold Evaluation Summary
The 2015 Threshold Evaluation Report was issued in September 2016. This is the sixth comprehensive report since the Regional Plan was adopted in 1987.
The 2015 Threshold Evaluation Report report considers conditions relative to 178 standards in nine threshold categories. Status determinations relative to the standard were made for 110 (68 percent) standards. Of the 110, 77 standards (70 percent) were found to be “at or better than target” or “considerably better than target.”
Please visit the links below to explore the 2015 Threshold Evaluation Report contents.
2015 Threshold Evaluation Report
Cover
Table of Contents
Errata Sheet
Executive Summary
Acknowledgements
Table of Contents
List of Figures
List of Tables
Chapter 1 Introduction
Chapter 2 Methodology
Chapter 3 Air Quality
Chapter 4 Water Quality
Chapter 5 Soil Conservation
Chapter 6 Vegetation
Chapter 7 Fisheries
Chapter 8 Wildlife
Chapter 9 Scenic
Chapter 10 Noise
Chapter 11 Recreation
Chapter 12 Implementation
Chapter 13 Conclusions and Recommendations
Appendix A Socioeconomic Setting
Appendix B Resolution No. 82-11
Appendix C Peer Review Summary
Appendix D Peer Review Response
Appendix E Stream Environment Zone Restoration Projects
Appendix F Wildlife Deer
Appendix G-1 Scenic Travel Routes
Appendix G-2 Scenic Resources
Appendix G-3 Scenic Recreation Area and Bike Trail Ratings
Appendix H Recreation Surveys
Appendix I Compliance Measure Table
Appendix J-1 Tributary Concentration Table
Appendix J-2 Tributary Load Table
Appendix J-3 UC Davis TERC 2016 Periphyton Trends Final Report
Appendix K 2015 Final Fish Habitat Report
Appendix L Historic Status
Appendix M Status Trend Table
Final 2015 TVAL All Redlines
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The threshold evaluation assigns a status to an indicator relative to the adopted standard. As shown on the icon legend below, the background color of the reporting icon communicates the indicator “status” or estimate of current condition. For numerical standards, the status of an indicator is classified into “better” or “worse” categories based on the percent divergence of the current indicator value from the standard or interim target. For most indicators, the current value is taken directly from the value recorded in the most recent year. In some cases, the average value calculated from all data collected during the evaluation period is used. When an average value is used, it is noted and explained on the indicator evaluation page for that specific evaluation year.
Note: Thresholds reported as "Implemented" refer to thresholds that were adopted as policy guidance in the development of the Regional Plan. In these cases, the subject policies, ordinances, or environmental protections have been incorporated into the TRPA Regional Plan and TRPA Code of Ordinances.