Third national assessment
- Executive Summary
- 1.0 Introduction
- 2.0 Methods
- 3.0 Presence or Absence of Effects
- 4.0 Effluent Quality
- 5.0 Biological Monitoring Studies Investigating Observed Effects
- 6.0 Key Findings
- 7.0 Glossary
- 8.0 References
- Appendix A: Metal Mines Subject to the Metal Mining Effluent Regulations in 2013
- Appendix B: Effect Indicators, Critical Effects Sizes and Studies Conducted
- Appendix C: Mine-by-Mine Results of Studies Assessing Potential Effects
- Appendix D: Fish Tissue Mean Total Mercury Concentrations per Mine
- Appendix E: Trends in Sublethal Toxicity
- Appendix F: Trends in Sublethal Toxicity for Ore Types
- Appendix G: Annual Mean Concentrations of Effluent Characterization Data
- Appendix H: Mine-by-Mine Summary of Investigation Studies
Appendix D: Fish Tissue Mean Total Mercury Concentrations per Mine
Figure D1. Mean total mercury in fish tissue for reference and exposure fish sampled during the mine’s first environmental effects monitoring (EEM) biological monitoring study.
Description
Figure D1 is a bar chart illustrating fish tissue mean total mercury concentration in fish captured in exposure and reference areas during a mine’s first study. The x-axis labels, for each mine, the fish species captured and mine code and the y-axis represents the mean total mercury concentration in µg/g. A dashed line runs horizontally across the chart at 0.50 µg/g. There are 29 mines shown and 9 mean total mercury concentrations meet or exceed the dashed line – 5 from reference areas and 4 from exposure areas.
Note: The dashed line represents the MMER effect level of 0.50 µg/g.
Figure D2. Mean total mercury in fish tissue for reference and exposure fish sampled during the mine’s second EEM biological monitoring study.
Description
Figure D2 is a bar chart illustrating fish tissue mean total mercury concentration in fish captured in exposure and reference areas during a mine’s second study. The x-axis labels, for each mine, the fish species captured and mine code and the y-axis represents the mean total mercury concentration in µg/g. A dashed line runs horizontally across the chart at 0.50 µg/g. There are 24 mines shown and 3 mean total mercury concentrations meet or exceed the dashed line – 2 from reference areas and 1 from exposure areas.
Note: The dashed line represents the MMER effect level of 0.50 µg/g
Figure D3. Mean total mercury in fish tissue for reference and exposure fish sampled during the mine’s third and fourth EEM biological monitoring study.
Description
Figure D3 is a bar chart illustrating fish tissue mean total mercury concentration in fish captured in exposure and reference areas during a mine’s third and fourth study. The x-axis labels, for each mine, the fish species captured and mine code and the y-axis represents the mean total mercury concentration in µg/g. A dashed line runs horizontally across the chart at 0.50 µg/g. There are 11 mines shown for the third study and 1 mine shown for the fourth study. Three mean total mercury concentrations meet or exceed the dashed line for the third study period – 2 from reference areas and 1 from exposure areas and no mean total mercury concentrations meet or exceed the dashed line for the fourth study.
Note: The dashed line represents the MMER effect level of 0.50 µg/g.
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