Information for Investors

Runoff and Turbidity

HLA-Envirosciences (2004) suggested that erosion can be prevented on site.  This is impossible.  At best erosion can be minimised.  The proponents propose to manage runoff from roads by allowing sheet runoff as opposed to diverting the water into culverts.  This might be of benefit if roads were the only infrastructure on site.  However, the numerous buildings and associate infrastructure will interfere with any natural sheet runoff, causing concentrations of water, and leading to significant erosion in many parts of the site.  The intensity of wet season rainfalls, the steepness of much of this landscape, combined with the granitic soils make the area very erosion prone.  We believe the safeguards proposed by the proponents will fail to adequately address erosion on site.  This will have serious consequences for both terrestrial and marine ecology as well as for the amenity and safety of residents.  In addition, the proposed 20 m fires break will contribute significantly to erosion by exposing erosion–prone soils and removing stabilising vegetation. 

Wet season rain events are likely to lead to a significant input of sediment, nutrients and hazardous chemicals (such as oils, detergents, fertilisers, herbicides and pesticides) into the marine environment. 

There are likely to be significant impacts on the marine environments as a consequence of poisons spread for termite control (which is a local government requirement). 

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