Page 27 - Water Pollution Management - Environmetal Legislation - Your Responsibility

Temporary de-watering from excavations to

surface water (2)

The discharge must not:

• pollute surface water

• contain any chemical dosing agents, flocculants or coagulants

• be from a site which is contaminated by oil, metals, hydrocarbons,
solvents or pesticides or other polluting substances

• result in the spread of non-native invasive species, parasites or disease

• cause flooding from surface water

• cause erosion of the banks or bed of the receiving watercourse

• contain concrete wash water even if it has been treated

• contain site drainage from surface areas such as haul roads, storage or
working areas

• be from a site with naturally elevated concentrations of substances

which exceed environmental quality standards

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