Appendix G - Stormwater Management Report

RPS Project Management c/- Lutheran Services                                                     Page 7 of 10
PF80 - Cooroy Care Farm
28 May 2018                                                                                Ref. No. 2017.0616




       3.8           Erosion and Sediment Control Practices
Stormwater run-off from land development and infrastructure development sites has a high potential to
cause water contamination and/or environmental harm. This is regulated under the EP Act 1994.

Under S440ZG it is an offence to unlawfully deposit a prescribed water contaminant to waters.
Prescribed contaminants are listed in Schedule 9 of the Environmental Protection Regulation 2008 (EP
Reg), and include: ashes, clay, gravel, sediment, stones and similar organic or inorganic matter, as well
as building and construction materials and waste.

Under S 319 persons in Queensland carrying out activities which may cause environmental harm must
comply with the ’general environmental duty’ (GED). This requires that all reasonable and practicable
measures must be adopted to prevent and minimise environmental harm. Although not being able to
demonstrate compliance against GED is not an offence, demonstrating that all reasonable and
practicable measures have been adopted is a defence for offences such as water contamination. For
instance, under chapter 10, s493A of the EP Act, where a person deposits a prescribed water
contaminant to waters or causes unlawful environmental harm, it is a defence to demonstrate
compliance with the GED. Demonstrating that all reasonable and practicable measures have been
conceived and implemented should encompass:
       ▪ thorough and ongoing site assessments
       ▪ consideration of, and adaptation for site specific erosion risk factors including topography, soil
         type, climate and season
       ▪ design, installation, operation, management, maintenance and monitoring of control measures
         as identified in the erosion and sediment control plan.


       3.9           Erosion and Sediment Control Strategy
Erosion and sediment control will be addressed in detail prior to the construction stage. Best
management practices will be adopted and key elements of the erosion and sediment control strategy
will include:

       ▪ Minimising the duration of disturbance
       ▪ Close site supervision and inspection of ESC measures
       ▪ Sediment management using:
         − Filter fences and sediment fences
         − Sediment basins
         − Dust/erosion suppressant polymers
         − Regular use of water truck
         − Controlled stockpile, entry and exit points.