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annexc - Newmont Mining Corporation

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Surface Water Statistic<br />

Village Wells<br />

Monitoring Wells<br />

Water Quality<br />

Standards<br />

Total # Samples Analysed<br />

Total Non Detect<br />

Maximum<br />

Mean<br />

Standard Deviation<br />

Total # Samples Analysed<br />

Total Non Detect<br />

Maximum<br />

Mean<br />

Standard Deviation<br />

USEPA MCL PRIMARY<br />

USEPA MCL SECONDARY<br />

WHO DWG<br />

GSB/GWC DWG<br />

U = value is detection limit<br />

NA = not applicable<br />

ND = no data<br />

Shaded cell: value exceeds lowest std.<br />

Copper,<br />

Dissolved<br />

mg/L<br />

Copper,<br />

Total<br />

mg/L<br />

Cyanide,<br />

Total<br />

mg/L<br />

Table C4-7<br />

Groundwater Chemistry (2001-2007)<br />

Akyem Project<br />

Eastern Region, Ghana<br />

Cyanide,<br />

Free<br />

mg/L<br />

Fluoride,<br />

Undistilled<br />

mg/L<br />

Hardness,<br />

as CaCO3<br />

mg/L<br />

Iron,<br />

Dissolved<br />

mg/L<br />

Iron,<br />

Total<br />

mg/L<br />

Lead,<br />

Dissolved,<br />

mg/L<br />

Lead,<br />

Total<br />

mg/L<br />

Magnesium<br />

mg/L<br />

Manganese,<br />

Dissolved<br />

mg/L<br />

Manganese,<br />

Total<br />

mg/L<br />

Mercury,<br />

Dissolved<br />

mg/L<br />

Mercury,<br />

Total<br />

mg/L<br />

86 247 105 125 144 174 90 255 90 102 123 86 250 90 101<br />

42 69 86 106 12 3 49 31 73 82 0 3 6 89 100<br />

0.19 1.1 0.01 2.8 0.8 452 1.2 26 0.0056 2.3 65 2 9 0.00034 0.001U<br />

0.01 0.05 0.01 0.03 0.2 99 0.1 1 0.004 0.05 13 0.2 0.4 0.0001 NA<br />

0.03 0.12 0.003 0.25 0.1 99 0.3 2 0.002 0.24 11 0 1 0.0001 NA<br />

17 66 71 71 74 17 17 72 17 59 60 17 66 17 53<br />

2 53 70 71 7 0 1 4 2 43 0 0 5 17 47<br />

0.0008 0.019 0.2 0.01U 0.9 274.7 2.9 31 0.00181 0.81 43.7 0.331 1.6 0.0002U 0.0006<br />

0.0005 0.01 NA NA 0.2 126 0.4 1 0.0004 0.04 10 0.1 0.21 NA 0.0002<br />

0.0002 0.01 NA NA 0.2 82 1 5 0.0005 0.12 10 0.1 0.30 NA 0.0001<br />

1.3 1.3 0.2 4 0.015 0.015 0.002 0.002<br />

1 1 2 0.3 0.3 0.05 0.05<br />

2 2 0.07 1.5 0.01 0.01 0.4 0.4 0.006 0.006<br />

1 1 0.01 1.5 0.3 0.3 0.01 0.01 0.5 0.5 0.001 0.001<br />

USEPA = U.S. Environmental Protection Agency<br />

WHO = World Health Org.<br />

DWG = Drinking Water Goal<br />

GSB/GWC = Ghana Stds Board and Water Co.

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