BEN SCHOEMAN DOCK BERTH DEEPENING Specialist ... - Transnet
BEN SCHOEMAN DOCK BERTH DEEPENING Specialist ... - Transnet
BEN SCHOEMAN DOCK BERTH DEEPENING Specialist ... - Transnet
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Impact summary Table (cont.)<br />
Impact Extent Intensity Duration Consequence Probability Significance Status Confidence<br />
Impact #15: Dredge spoil disposal site #2: Local Low Short-term Very Low Improbable INSIGNIFICANT -ve High<br />
Trace metal contaminated dredge spoil<br />
exerts toxic effects on benthos in the dredge<br />
spoil dump area and its immediately adjacent<br />
1<br />
1<br />
1<br />
3<br />
area and disrupts ecological processes.<br />
With Mitigation<br />
None None None<br />
None Will not occur INSIGNIFICANT Neutral High<br />
Impact #16: Effects of turbidity from dredge<br />
spoil on habitats adjacent to dump area(s):<br />
Site #1<br />
0<br />
Local<br />
1<br />
0<br />
Low<br />
1<br />
0<br />
Short-term<br />
1<br />
0<br />
Very Low<br />
3<br />
Improbable INSIGNIFICANT -ve High<br />
With Mitigation n/a n/a n/a n/a n/a n/a n/a n/a<br />
Impact #17: Effects of turbidity from dredge<br />
spoil on habitats adjacent to dump area(s):<br />
Site #2<br />
Regional<br />
2<br />
Medium<br />
2<br />
Short-term<br />
1<br />
Low<br />
5<br />
Probable LOW -ve Medium<br />
With Mitigation<br />
Impact #18: Reductions in of water column<br />
oxygen concentration in spoil dump area(s)<br />
and effects on biological communities<br />
None<br />
0<br />
Local<br />
1<br />
None<br />
0<br />
Low<br />
1<br />
None<br />
0<br />
Short-term<br />
1<br />
None<br />
0<br />
Very Low<br />
3<br />
Will not occur INSIGNIFICANT Neutral High<br />
Improbable INSIGNIFICANT -ve High<br />
With Mitigation n/a n/a n/a n/a n/a n/a n/a n/a<br />
Impact #19: Effects of turbidity from dredge<br />
spoil on habitats in the Table Mountain MPA<br />
and/or the Robben Island exclusion zone:<br />
Site #1<br />
Regional<br />
2<br />
Low<br />
1<br />
Short-term<br />
1<br />
Very Low<br />
4<br />
Possible INSIGNIFICANT -ve Medium<br />
With Mitigation<br />
Impact #20: Effects of turbidity from dredge<br />
spoil on habitats in the Table Mountain MPA<br />
and/or the Robben Island exclusion zone:<br />
Site #2<br />
With Mitigation<br />
Impact #21: Elevated turbidity affects inter<br />
and shallow subtidal biota in the Table<br />
Mountain MPA<br />
Regional<br />
2<br />
Regional<br />
2<br />
None<br />
0<br />
Local<br />
1<br />
Low<br />
1<br />
Medium<br />
2<br />
None<br />
0<br />
Low<br />
1<br />
Short-term<br />
1<br />
Short-term<br />
1<br />
None<br />
0<br />
Short-term<br />
1<br />
Very Low<br />
4<br />
Low<br />
5<br />
None<br />
0<br />
Very Low<br />
3<br />
Improbable INSIGNIFICANT -ve High<br />
Probable LOW -ve Medium<br />
Will not occur INSIGNIFICANT Neutral High<br />
Improbable INSIGNIFICANT -ve High<br />
With Mitigation n/a n/a n/a n/a n/a n/a n/a n/a<br />
101
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