Original EA Amendment

MT MORGAN OPEN CUT PIT WATER QUALITY MODELLING stage 2 ● 15

Table 3-3 Summary water quality statistics of total metals and metalloids data of OCP water

OCP Site Statistics

Al (mg/L)

As (mg/L)

B (mg/L)

Cd (mg/L)

Cr (mg/L)

Co (mg/L)

Cu (mg/L)

Fe (mg/L)

Pb (mg/L)

Mn (mg/L)

Ni (mg/L)

Se (mg/L)

Zn (mg/L)

Count

11

11

10

11

11

11

11

11

9

11

11

10

11

Minimum

407

0.007

0.025

0.057

0.0025

1.14

13.2

7.24

0.0005

59.2

0.401

0.02

13.9

5 th %ile

686

0.012

0.04

0.090

0.003

1.83

29.1

7.6

0.001

98

0.570

0.02

22.5

20 th %ile

1040

0.022

0.10

0.271

0.005

3.43

57.9

8.6

0.002

137

0.927

0.02

41.0

Median

1160

0.031

0.13

0.289

0.005

4.05

69.2

11.5

0.003

174

1.120

0.04

48.7

80 th %ile

1320

0.042

0.21

0.297

0.010

4.50

74.3

37.6

0.005

192

1.310

0.05

54.6

95 th %ile

1375

0.045

0.27

0.329

0.018

5.04

79.8

1935.0

0.006

206

1.370

0.07

62.6

Maximum

1400

0.045

0.27

0.333

0.022

5.33

83.7

3830.0

0.006

216

1.390

0.09

65.2

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