1. Water Quality Monitoring
Nush, Mai and Vandy

2. Content Mining & Water Quality Deforestation & Water Quality
Conclusion & Recommendation

3. Mercury and Cyanide from Gold Mining

5. Used of Mercury and Cyanide in Gold Mining
Gold will dissolve in liquid mercury and this process was extensively used for recovery of gold from ground area
Cyanide solutions used to dissolve and extract gold
Mercury and Cyanide often eroded into streams or were deposited directly into streams
Mercury and Cyanide is likewise harmful to wildlife such as mammals, birds, and fish.
Biomagnifications

6. Mercury and Cyanide Legacy from Historic Mines
Elevated concentrations of mercury and cyanide in sediments
Elevated concentrations of mercury and cyanide in fish, birds and other wildlife
Restrictions on the amount of fish that should be consumed by humans

7. Toxic Issues with Mercury and Cyanide
Neurotoxicity
Birth defects
Kidney function

8. Byproduct Mercury Production
The Chemistry
Au + O2 + CN Au(CN) (water soluble)
Hg + O2 + CN Hg(CN)2 + Hg(CN)42-
(water soluble)
Both the gold and mercury cyanide complexes are trapped on carbon and recovered during processing

9. How is Byproduct effected to human health
Biomagnifications in aquatic life to human
Release to ground water
Evaporated to the atmosphere

10. How is Byproduct Managed
Sold or transferred to three primary mercury recyclers
Management and transfer is conducted in a safe and reliable manner

11. The Cause of harmful water quality
Plantation
Logging
Deforestation

12. Less water and Fish in dry season
Impacts of Deforestation
Less water and Fish in dry season

13. E
Water Quality? F G

14. Conclusion
- WQ still questionable: Lack of equipment & Instruments - Long term effect unidentified: recovery plan after the project completion

15. Recommendations
More mercury and cyanide should be required for water quality monitoring.
Should cover the bottom of the reservoir pond by plastic or set up the proper pond to reduce the chance that Mercury and Cyanide will be release to ground water
Do not allow people to do fishing and eat any aquatic life from that pond
Try to reuse that water again in the processing

16. Recommendations Law enforcement to combat with illegal logging
Discourage shifting cultivation
Provide seeding and technical support to the marginalized
Ground and surface water check must be implementing systematic
Raising awareness on forestation among children
Providing equipment and technical supports
Provide marketable seeds/stem

17. Any questions?

18. Thank you!