annexc - Newmont Mining Corporation

Surface Water Statistic
Afosu Stream
Mamang
Tributaries
Mamang River
Pra River
Tributaries
Pra River
Water Quality
Standards
Total # Samples Analysed
Total Non Detect
Maximum
Mean
Standard Deviation
Total # Samples Analysed
Total Non Detect
Maximum
Mean
Standard Deviation
Total # Samples Analyzed
Total Non Detect
Maximum
Mean
Standard Deviation
Total # Samples Analyzed
Total Non Detect
Maximum
Mean
Standard Deviation
Total # Samples Analyzed
Total Non Detect
Maximum
Mean
Standard Deviation
USEPA MCL PRIMARY
USEPA MCL SECONDARY
WHO DWG
GSB/GWC DWG
U = value is detection limit
NA = not applicable
ND = no data
Shaded cell: value exceeds lowest std.
COD
mg/L
Cobalt,
Dissolved
mg/L
Table C4-5
Surface Water Chemistry (2001-2007)
Akyem Project
Eastern Region, Ghana
Cobalt,
Total
mg/L
Copper,
Dissolved
mg/L
Copper,
Total
mg/L
Cyanide,
Total
mg/L
Cyanide,
Free
mg/L
Fluoride,
Undistilled
mg/L
Hardness,
as CaCO3
mg/L
Iron,
Dissolved
mg/L
Iron,
Total
mg/L
Lead,
Dissolved,
mg/L
Lead,
Total
mg/L
Magnesium
mg/L
26 18 26 18 86 24 31 44 70 17 83 15 30 33
0 10 12 10 17 24 27 5 0 2 0 10 9 0
301 0.01 0.011 0.006 2.35 0.01U 0.031 1 341 14.6 50.7 0.005 0.01 44
45 0.01 0.004 0.003 0.14 NA 0.01 0 96 1 5 0 0 11
65 0.00 0.004 0.002 0.38 NA 0.01 0 65 3 8 0 0 7
48 29 52 29 190 43 64 91 164 24 189 21 70 66
0 17 24 17 41 42 47 10 0 1 0 18 33 0
336 0.0177 0.0182 0.011 4.8 0.01 0.012 3.6 456 3.6 130 0.005 0.0126 25
47 0.009 0.005 0.004 0.1 NA 0.007 0 95 1 5 0 0 10
72 0.003 0.004 0.003 0.5 NA 0.004 0 66 1 11 0 0 5
37 21 46 21 55 41 42 47 54 17 51 16 42 46
0 11 19 8 22 41 42 0 0 0 0 11 6 0
265 0.01 0.024 0.044 1.45 0.01U 0.01U 0.8 202 3.7 21 0.005 0.0119 28
48 0.006 0.004 0.006 0.03 NA NA 0 57 2 5 0 0 6
40 0.005 0.005 0.009 0.2 NA NA 0 31 1 3 0 0 4
13 7 14 7 30 11 13 16 29 5 29 5 16 15
0 4 6 2 8 11 13 3 0 0 1 4 5 0
242 0.01 0.01 0.007 2.1 0.01U 0.01U 0.5 251.3 1.4 39 0.005 0.01 10.6
44 0.01 0.004 0.004 0.11 NA NA 0 88 1 4 0 0 7
62 0.004 0.004 0.003 0.39 NA NA 0 43 1 8 0 0 2
30 20 37 20 57 35 36 39 53 16 54 14 38 41
0 9 17 9 17 35 35 7 0 0 0 9 4 0
70.3 0.01 0.01 0.005 0.89 0.01U 2.83 0.9 158.3 2.1 26.3 0.005 0.01 14.6
29 0.005 0.003 0.003 0.04 NA NA 0 60 1 4 0 0 5
17 0.005 0.003 0.002 0.1 NA NA 0 28 1 4 0 0 2
1.3 1.3 0.2 4 0.015 0.015
1 1 2 0.3 0.3
2 2 0.07 1.5 0.01 0.01
1 1 0.01 1.5 0.3 0.3 0.01 0.01
USEPA = U.S. Environmental Protection Agency
WHO = World Health Org.
DWG = Drinking Water Goal
GSB/GWC = Ghana Stds Board and Water Co.