Appendix F – Modelling Results for Direct Burying and Dredging Activities

 

 

(All units in mg/L unless otherwise stated; all figures are upper limits unless otherwise indicated)

 

Direct Burying

Advancing Rate = 150 m/h (Worst Case Scenario)

Dry Season

Wet Season

Monitoring Location

Spring Tide

Neap Tide

Spring Tide

Neap Tide

min

average

50%-ile

90%-ile

min

average

50%-ile

90%-ile

min

average

50%-ile

90%-ile

min

average

50%-ile

90%-ile

R1

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.5

0.0

0.4

0.0

0.0

0.0

0.0

R3

0.0

0.1

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.5

0.0

0.7

0.0

0.0

0.0

0.0

R4

0.0

0.1

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.4

0.0

0.8

0.0

0.0

0.0

0.0

R5

0.0

0.3

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.3

0.0

0.6

0.0

0.1

0.0

0.0

R6

0.0

0.1

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.2

0.0

0.3

0.0

0.0

0.0

0.0

R7

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.0

R8

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

0.0

0.1

R9

0.0

0.2

0.0

0.3

0.0

0.2

0.0

0.0

0.0

1.5

0.0

1.4

0.0

0.2

0.0

0.2

R10

0.0

0.2

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.0

R11

0.0

0.2

0.0

0.4

0.0

0.4

0.0

0.3

0.0

1.1

0.0

1.3

0.0

0.1

0.0

0.2

R12

0.0

0.5

0.0

0.2

0.0

0.1

0.0

0.1

0.0

0.5

0.0

0.3

0.0

0.0

0.0

0.0

R13

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R14

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R15

0.0

0.4

0.0

0.6

0.0

0.6

0.0

0.6

0.0

1.5

0.0

0.7

0.0

0.5

0.0

0.1

R16

0.0

0.7

0.0

0.3

0.0

0.1

0.0

0.1

0.0

0.7

0.0

0.4

0.0

0.0

0.0

0.1

R17

0.0

0.2

0.0

0.4

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R18

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R19

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R20

0.0

0.2

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R21

0.0

0.4

0.0

0.5

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R22

0.0

0.7

0.0

0.7

0.0

1.2

0.0

0.2

0.0

0.1

0.0

0.0

0.0

1.2

0.0

0.0

R23

0.0

3.8

0.0

0.8

0.0

0.9

0.0

0.3

0.0

1.1

0.0

0.0

0.0

0.1

0.0

0.0

R24

0.0

0.5

0.0

0.2

0.0

1.6

0.0

0.8

0.0

0.1

0.0

0.2

0.0

1.9

0.1

5.5

R25

0.0

0.6

0.0

0.2

0.0

0.6

0.0

0.2

0.0

0.2

0.0

0.2

0.0

0.8

0.2

2.2

R26

0.0

0.2

0.0

0.2

0.0

0.0

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R27

0.0

0.1

0.0

0.2

0.0

0.0

0.0

0.2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R28

0.0

0.5

0.0

0.9

0.0

0.2

0.0

0.6

0.0

0.1

0.0

0.2

0.0

0.1

0.0

0.2

R29

0.0

0.4

0.0

0.7

0.0

0.1

0.0

0.3

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R30

0.0

0.4

0.0

0.8

0.0

0.2

0.0

0.6

0.0

0.1

0.0

0.4

0.0

0.5

0.0

0.5

R31

0.0

0.4

0.0

0.9

0.0

0.5

0.0

1.1

0.0

0.3

0.0

0.3

0.0

0.1

0.0

0.3

R32

0.0

0.4

0.0

1.0

0.0

0.4

0.0

1.1

0.0

0.2

0.0

0.5

0.0

0.7

0.0

0.6

R33

0.0

0.4

0.0

1.0

0.0

0.3

0.0

0.9

0.0

0.2

0.0

0.6

0.0

0.7

0.0

0.9

R34

0.0

0.2

0.0

0.7

0.0

0.3

0.0

1.1

0.0

0.2

0.1

0.5

0.0

0.2

0.0

0.8

R35

0.0

0.4

0.0

1.0

0.0

0.3

0.0

1.1

0.0

0.6

0.0

0.9

0.0

1.0

0.0

1.0

R36

0.0

0.4

0.0

1.3

0.0

0.3

0.0

0.9

0.0

0.4

0.1

1.0

0.0

1.0

0.0

0.6

R37

0.0

0.3

0.0

0.8

0.0

0.3

0.0

0.8

0.0

0.3

0.1

0.7

0.0

0.7

0.0

0.7

R38

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

 


(All units in mg/L unless otherwise stated; all figures are upper limits unless otherwise indicated)

 

Dredging

Single Trench

Monitoring Location

Dry Season

Wet Season

min

average

50%-ile

90%-ile

min

average

50%-ile

90%-ile

R1

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

R2

0.0

0.0

0.0

0.0

0.0

0.3

0.0

0.7

R3

0.0

0.0

0.0

0.0

0.0

0.4

0.0

1.0

R4

0.0

0.0

0.0

0.0

0.0

0.3

0.0

1.0

R5

0.0

0.1

0.0

0.0

0.0

0.4

0.0

1.2

R6

0.0

0.0

0.0

0.0

0.0

0.3

0.0

0.8

R7

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.6

R8

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R9

0.0

0.1

0.0

0.5

0.0

0.6

0.0

1.3

R10

0.0

0.1

0.0

0.0

0.0

0.3

0.0

1.2

R11

0.0

0.2

0.0

0.6

0.0

0.5

0.0

1.7

R12

0.0

0.2

0.0

0.5

0.0

0.4

0.0

1.2

R13

0.0

0.0

0.0

0.0

0.0

0.2

0.0

0.9

R14

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.7

R15

0.0

0.3

0.0

1.0

0.0

0.5

0.0

1.4

R16

0.0

0.3

0.0

1.0

0.0

0.6

0.0

1.7

R17

0.0

0.1

0.0

0.0

0.0

0.3

0.0

1.1

R18

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R19

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R20

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

R21

0.0

0.0

0.0

0.0

0.0

0.3

0.0

0.8

R22

0.0

0.1

0.0

0.0

0.0

0.4

0.0

1.4

R23

0.0

0.0

0.0

0.0

0.0

0.4

0.0

1.3

R24

0.0

0.6

0.0

1.2

0.0

0.5

0.0

1.5

R25

0.0

0.4

0.0

0.4

0.0

0.4

0.0

1.0

R26

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R27

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.0

R28

0.0

0.2

0.0

0.7

0.0

0.1

0.0

0.6

R29

0.0

0.2

0.0

0.7

0.0

0.1

0.0

0.0

R30

0.0

0.2

0.0

0.5

0.0

0.2

0.0

0.5

R31

0.0

0.4

0.0

1.1

0.0

0.3

0.0

0.9

R32

0.0

0.3

0.0

0.9

0.0

0.3

0.0

0.9

R33

0.0

0.3

0.0

0.9

0.0

0.3

0.0

0.9

R34

0.0

0.3

0.0

0.9

0.0

0.2

0.0

0.5

R35

0.0

0.4

0.0

0.9

0.0

0.5

0.0

1.3

R36

0.0

0.3

0.0

0.8

0.0

0.4

0.0

1.1

R37

0.0

0.3

0.0

0.8

0.0

0.3

0.0

0.8

R38

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

 


 

(All units in mg/L unless otherwise stated; all figures are upper limits unless otherwise indicated)

 

Dredging

Three Trenches

Monitoring Location

Dry Season

Wet Season

min

average

50%-ile

90%-ile

min

average

50%-ile

90%-ile

R1

0.0

0.0

0.0

0.0

0.0

0.2

0.0

0.0

R2

0.0

0.1

0.0

0.0

0.0

0.8

0.0

2.3

R3

0.0

0.1

0.0

0.0

0.0

1.1

0.0

3.1

R4

0.0

0.1

0.0

0.0

0.0

1.0

0.0

2.9

R5

0.0

0.2

0.0

0.0

0.0

1.1

0.0

3.6

R6

0.0

0.1

0.0

0.0

0.0

0.8

0.0

2.4

R7

0.0

0.0

0.0

0.0

0.0

0.4

0.0

1.7

R8

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

R9

0.0

0.4

0.0

1.6

0.0

1.7

0.0

3.9

R10

0.0

0.2

0.0

0.0

0.0

0.9

0.0

3.7

R11

0.0

0.6

0.0

1.8

0.0

1.6

0.0

5.0

R12

0.0

0.5

0.0

1.6

0.0

1.2

0.0

3.6

R13

0.0

0.1

0.0

0.0

0.0

0.7

0.0

2.6

R14

0.0

0.1

0.0

0.0

0.0

0.4

0.0

2.2

R15

0.0

0.9

0.0

3.0

0.0

1.5

0.0

4.1

R16

0.0

0.9

0.0

3.0

0.0

1.7

0.0

5.2

R17

0.0

0.2

0.0

0.0

0.0

0.8

0.0

3.4

R18

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0

R19

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

R20

0.0

0.0

0.0

0.0

0.0

0.3

0.0

0.0

R21

0.0

0.1

0.0

0.0

0.0

0.8

0.0

2.3

R22

0.0

0.2

0.0

0.0

0.0

1.3

0.0

4.3

R23

0.0

0.1

0.0

0.0

0.0

1.2

0.0

4.0

R24

0.0

1.9

0.0

3.6

0.0

1.5

0.0

4.6

R25

0.0

1.1

0.0

1.1

0.0

1.1

0.0

3.1

R26

0.0

0.1

0.0

0.0

0.0

0.1

0.0

0.0

R27

0.0

0.2

0.0

0.0

0.0

0.1

0.0

0.0

R28

0.0

0.7

0.0

2.1

0.0

0.4

0.0

1.9

R29

0.0

0.5

0.0

2.0

0.0

0.3

0.0

0.0

R30

0.0

0.6

0.0

1.6

0.0

0.7

0.0

1.6

R31

0.0

1.3

0.0

3.4

0.0

0.9

0.0

2.8

R32

0.0

1.0

0.0

2.8

0.0

0.9

0.0

2.7

R33

0.0

1.0

0.0

2.8

0.0

1.0

0.0

2.8

R34

0.0

0.8

0.0

2.6

0.0

0.5

0.0

1.4

R35

0.0

1.1

0.0

2.6

0.0

1.4

0.0

3.9

R36

0.0

0.9

0.0

2.3

0.0

1.1

0.0

3.4

R37

0.0

0.8

0.0

2.3

0.0

0.8

0.0

2.3

R38

0.0

0.0

0.0

0.0

0.0

0.1

0.0

0.0