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.
Salinity
mg/L
Selenium,
Dissolved
mg/L
Selenium,
Total
mg/L
Table C4-5
Surface Water Chemistry (2001-2007)
Akyem Project
Eastern Region, Ghana
Silver,
Dissolved
mg/L
Silver,
Total
mg/L
Silica
mg/L
Sodium
mg/L
Strontium,
Dissolved
mg/L
Strontium,
Total
mg/L
Sulfate
mg/L
Thallium,
Dissolved
mg/L
Thallium,
Total
mg/L
Tin,
Dissolved
mg/L
Tin,
Total
mg/L
Tungsten,
Total
mg/L
Tungsten,
Dissolved
mg/L
56 18 26 9 10 43 33 7 9 74 18 24 10 15 7 9
0 15 19 9 10 0 0 0 0 6 18 23 8 11 4 6
1.6 0.01 0.01 0.01U 0.01U 71.2 40.3 0.125 0.121 114 0.02U 0.01U 0.0001 0.01 0.00001 0.00003
0.16 0.01 0.00 NA NA 24 12 0 0 8 NA 0.0042 0.00004 0.0007 0.00001 0.00001
0.21 0.005 0.005 NA NA 14 7 0 0 15 NA 0.01 0.00004 0.0026 1.3E-13 0.00001
118 29 51 18 22 98 66 11 19 183 32 45 14 30 11 19
0 20 35 18 22 0 0 0 0 5 30 36 7 22 8 15
160 0.01 0.02 0.01U 0.01U 85 29.3 0.282 0.294 91.5 0.02U 0.072 0.0001 0.00019 0.00003 0.00002
2 0.007 0.004 NA NA 26 13 0 0 11 0.01 0.01 0.00003 0.0000 0.00001 0.00001
15 0.005 0.005 NA NA 18 7 0 0 16 0.01 0.01 0.00004 0.0000 0.00001 3.2E-06
9 22 42 11 19 40 46 10 15 53 21 41 13 32 10 15
0 16 30 11 19 0 0 0 0 5 20 39 9 28 10 14
0.2 0.01 0.03 0.01U 0.01U 59.5 45 0.158 0.153 24.4 0.02U 0.03 0.0001 0.01 0.00001U 0.0134
0.111 0.005 0.005 NA NA 15 13 0 0 6 NA 0.0044 0.00005 0.0016 NA NA
0.033 0.005 0.006 NA NA 9 8 0 0 5 NA 0.01 0.00004 0.0037 NA NA
17 7 14 4 7 14 15 3 5 31 9 11 3 10 3 5
0 5 10 4 6 0 0 0 0 0 8 10 2 9 3 5
0.3 0.01 0.01 0.01U 0.01 75.7 32 0.245 0.246 70.7 0.02U 0.01U 0.0001 0.01 0.00001U 0.00001U
0.124 0.006 0.004 NA 0.007 22 19 0 0 12 NA NA NA NA NA NA
0.056 0.005 0.005 NA 0.004 17 9 0 0 14 NA NA NA NA NA NA
15 20 38 9 19 29 41 9 12 58 20 36 12 29 9 12
0 14 29 9 17 0 0 0 0 9 20 36 9 23 8 10
0.1 0.01 0.01 0.01U 0.01 20.2 25.3 0.126 0.125 41 0.02U 0.01U 0.0001 0.017 0.00001 0.00007
0.094 0.005 0.005 NA 0.008 12 10 0 0 6 NA NA 0.00004 0.0023 NA 0.00002
0.023 0.005 0.005 NA 0.004 4 5 0 0 6 NA NA 0.00004 0.0047 NA 0.00002
0.05 0.05 0.002 0.002
0.1 0.1 250
0.01 0.01
0.01 0.01 200 250
Note: mg/L = milligrams
USEPA = U.S. Environmental Protection Agency
WHO = World Health Org.
DWG = Drinking Water Goal
GSB/GWC = Ghana Stds Board and Water Co.