Source of Impact

Proposed Mitigation

Predicted Degree of Residual Impact

Habitat loss

·         Labeling and fencing of the uncommon tree species

·         Avoidance of use of woodland habitats as Works Area, in particular where these trees are located

Acceptable

Site runoff

·         Construction and maintenance of sand/silt removal facilities

·         Timing of earthworks

·         Coverage of sand/fill piles during storms

·         Barriers should be deployed completely along the landward side of Pumping Station P2 site boundary. Intactness of the barriers should be frequently inspected. Special attention should be paid during March to September.

Acceptable

Suspended solid

·         Use of closed-grab dredging

Deploy silt curtains during dredging

Acceptable

Contaminants & Drilling fluid

·         Silt curtains

Acceptable