Original EA Amendment

6

Consequence Category assessment ................... 22

6.1

Method Overview ..................................................................... 22

6.1.1 6.1.2

ANCOLD guidelines..............................................................................22 DETSI guidelines ..................................................................................23

6.2

Dam Break Consequence ....................................................... 25

6.2.1 6.2.2 6.2.3 6.2.4

Population at risk ..................................................................................25 Potential Loss of Life ............................................................................27 Severity of Damage and Loss...............................................................29 Consequence Classification .................................................................30 Environmental Spill/Failure to contain (Overtopping) Consequence .................................................. 31 Population at risk ..................................................................................31 Potential loss of life...............................................................................31 Environmental considerations...............................................................31 Consequence classification ..................................................................32

6.3

6.3.1 6.3.2 6.3.3 6.3.4

6.4

Failure to Contain (Seepage) Consequence ......................... 33

6.4.1 6.4.2 6.4.3 6.4.4

Population at risk ..................................................................................33 Potential loss of life...............................................................................33 Environmental considerations...............................................................33 Consequence Category classification...................................................35

7

Potential impacts of future deposition expansion............................................................... 37

8

Conclusion ............................................................. 38

9

References ............................................................. 39

10

Limitations ............................................................. 41

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