180616-Response to Information Request. · 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.


Minor external catchment flows from the west will be contained in within the common
access driveway using a low (100mm) landscaped bund at the western boundary of the
site. Minor external flows from the south will be conveyed to the east using a 1.0m wide
swale drain to be constructed adjacent to the southern boundary of the site. Appropriate
scour protection will be installed in accordance with Section 4.5 of the Slope Stability
Assessment, prepared by Tectonic.



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.




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