Appendix3-EngineeringReport · MCU18/0135

An existing stormwater pipe network conveys stormwater from the Noosa Dunes Group
Titled development towards a large (1.8m Dia x 3.0m Deep) rapid infiltration pit located
at the north-east corner of the site.


It is proposed to direct developed stormwater from the subject site towards the existing
Rapid Infiltration Pit, which is considered the Legal Point of Discharge.



6.2     Stormwater Quantity Management


The site is located within a larger Group Titled residential subdivision and it has been
assumed that existing stormwater infrastructure available to the site has been
constructed to Council’s minimum standards and will be sufficiently sized to accept
developed site runoff with no on site detention required.


It should also be noted that, as the site is one of the last remaining vacant allotments
within the larger residential development, works over the subject site are considered a
minor modification to the catchment and will not create an actionable nuisance to existing
properties or Body Corporate stormwater infrastructure.



6.3     Water Quality Management Plan


The total site area is 953m² and the proposed land use is urban residential.


An assessment has been undertaken to determine if the proposed development is subject
to State Planning Policy (SPP) water quality objectives. Trigger Questions have been
applied to the development to determine if SPP compliance is required. Refer to Table
7.4a for details.


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