RFI - C - Site Based Stormwater Management Plan

About In-Site Water
This report is generated by user inputs from the toolkit at InSite Water. In-Site water is an online Integrated Water
Management tool designed for use on smaller sites (less than 2 hectares) in Australia that need quick and accurate
stormwater engineering answers. InSite water is simple to use but provides robust stormwater design and
engineering answers.
This report includes outputs from the InSite tool that has investigated:
        – water tank sizing
        – detention tank sizing
        – water savings through efficiency
        – water WSUD treatments such as raingardens
For enquiries, contact us through www.insitewater.com.au
Disclaimer
This guide is of a general nature only. Advice from a suitably qualified professional should be sought for your
particular circumstances. Depending on each unique situation, there may be occasions where compliance is not
achieved.
This report does not provide a detailed design and layout for the piping and general drainage system in your
development, which should be prepared by a suitably qualified professional. In addition, InSite Water does not
consider compliance for slope stability or foundation / slab / footing protection, which needs to come from a
qualified geotechnical or structural engineer.
The following is outside the scope of InSite Water, however it is critical that all designers consider the following in
drainage design and in using Water Sensitive Urban Design (WSUD) devices and approaches:
      •      Manage expectations and risks around occasional surface water and ponding.
      •      Ensure that uncontrolled stormwater does not flow over property boundaries or otherwise cause a nuisance.
      •      Plan for major flood pathways – locate buildings away from, adapt (raise floors above predicted flood levels)
             and defend buildings against potential major flooding.
      •      Seek professional advice to reduce damage and safety risks.
      •      Design for local conditions such as vegetation, topography and soils (soil type, reactivity, permeability, water
             table level, salinity, dispersiveness, acid sulphate soils, contaminated land etc).
      •      Ensure that soil moisture and building clearance is considered in areas of reactive clays or where varying soil
             moisture levels could damage buildings or other infrastructure.
      •      For steeper sites, ensure the design includes geotechnical considerations such as slope stability with varying
             soil saturation levels.
      •      Ensure that a Stormwater Risk Assessment and Environmental Management Plan is undertaken for sites that
             pose a pollution risk.
      •      Ensure that a Construction Environmental Management Plan (CEMP) is implemented to control sediments
             and reduce stormwater pollution during construction.
      •      Compliance with ARR 2019, Australian Rainfall and Runoff: A Guide to Flood Estimation http://arr.ga.gov.au/
      •      Compliance with NCC plumbing and building standards.
      •      Compliance with AS/NZS 3500.
      •      Compliance with EPA and other environmental regulations.
      •      Compliance with other relevant Australian Standards, regulations and Council requirements.

Legal Disclaimer
InSite Water and Organica Engineering takes no responsibility for the selective application or interpretation by third parties of the information that constitutes the document. This
document and its associated materials have been produced in good faith with all information contained deemed to be correct at time of production. Organica Engineering Pty Ltd, the
authors, reviewers and contributors take no responsibility, legally or financially, for any loss/damage to property/persons/projects resulting directly/indirectly from the document in whole
or part, its associated materials, or the interpretation thereof. Organica Engineering makes no claim as to the accuracy or authenticity of the content of this document, and does not
accept liability for loss or damages incurred as a result of reliance placed upon it.




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