Environmental Assessment
Volume B-5.4
Mine
Human and Ecological Health
Ambatovy Project
379
January 2006
Table 5.4-5 Baseline and Predicted (Operation Phase) Annual Concentration in
Surface Water in the Mine Area and Guidelines for Water Quality for
Agricultural Use
Average Annual Concentration (mg/L) - Outlet
Basins
Units
South Africa
Water Quality
Guidelines
Livestock
Watering
(a)
South Africa
Water Quality
Guidelines
Irrigation
(a)
Baseline Year 4 Year 10 Year 15 Year 20
Antsahalava River
fluoride (F)
mg/L
0-2
ng
0.05
0.05
0.06
0.05
0.06
sodium (Na)
mg/L
0-2000
0-70
2.3
2.6
2.8
2.6
2.7
sulphate (SO
4
)
mg/L
0-1000
ng
1.4
2.4
2.6
2.4
2.5
arsenic (As)
mg/L
0-1
0-0.1
0.0019
0.0026
0.0029
0.0026
0.0027
barium (Ba)
mg/L
ng
ng
0.017
0.078
0.106
0.081
0.090
chromium (Cr)
mg/L
0-1 (Cr IV)
0-0.10 (Cr IV)
0.007
0.023
0.024
0.023
0.023
molybdenum (Mo) mg/L
0-0.01
0-0.01
0.00
0.01
0.01
0.01
0.01
selenium (Se)
mg/L
0-50
0-2.0
0.002
0.002
0.003
0.003
0.003
thallium (Tl)
mg/L
ng
ng
< 0.006
< 0.008 < 0.008 < 0.008 < 0.008
zinc (Zn)
mg/L
0-20
0-1.0
0.006
0.007
0.008
0.008
0.008
Sahaviara River
sodium (Na)
mg/L
0-2000
0-70
2.3
2.2
2.2
2.7
2.4
sulphate (SO
4
)
mg/L
0-1000
ng
1.4
2.0
2.0
2.5
2.2
arsenic (As)
mg/L
0-1
0-0.1
0.0019
0.0023
0.0023
0.0028
0.0025
barium (Ba)
mg/L
ng
ng
0.017
0.071
0.071
0.120
0.093
chromium (Cr)
mg/L
0-1 (Cr IV)
0-0.10 (Cr IV)
0.007
0.018
0.018
0.020
0.019
molybdenum (Mo) mg/L
0-0.01
0-0.01
0.00
0.00
0.00
0.01
0.01
selenium (Se)
mg/L
0-50
0-2.0
0.002
0.002
0.002
0.003
0.002
thallium (Tl)
mg/L
ng
ng
< 0.006
< 0.008 < 0.008 < 0.008 < 0.008
zinc (Zn)
mg/L
0-20
0-1.0
0.006
0.007
0.007
0.008
0.007
Sahamarirana River
sulphate (SO
4
)
mg/L
0-1000
ng
1.4
2.2
2.2
1.6
1.5
arsenic (As)
mg/L
0-1
0-0.1
0.0019
0.0022
0.0022
0.0019
0.0019
barium (Ba)
mg/L
ng
ng
0.017
0.062
0.064
0.036
0.039
chromium (Cr)
mg/L
0-1 (Cr IV)
0-0.10 (Cr IV)
0.007
0.025
0.025
0.013
0.010
molybdenum (Mo) mg/L
0-0.01
0-0.01
0.00
0.00
0.00
0.00
0.00
selenium (Se)
mg/L
0-50
0-2.0
0.002
0.002
0.002
0.002
0.002
thallium (Tl)
mg/L
ng
ng
< 0.006
< 0.007 < 0.007 < 0.007 < 0.007
Torotorofotsy River
sulphate (SO
4
)
mg/L
0-1000
ng
1.4
1.4
1.7
1.4
1.9
arsenic (As)
mg/L
0-1
0-0.1
0.0019
0.0019
0.0023
0.0020
0.0022
barium (Ba)
mg/L
ng
ng
0.017
0.017
0.039
0.023
0.033
chromium (Cr)
mg/L
0-1 (Cr IV)
0-0.10 (Cr IV)
0.007
0.007
0.048
0.019
0.044
molybdenum (Mo) mg/L
0-0.01
0-0.01
0.00
0.00
0.00
0.00
0.00
selenium (Se)
mg/L
0-50
0-2.0
0.002
0.002
0.002
0.002
0.002
thallium (Tl)
mg/L
ng
ng
< 0.006
< 0.007 < 0.007 < 0.007 < 0.007
