Attachment D - Stormwater Management Plan · 132008.175.04

       a grease/oil arrestor/gross pollutant trap provided on site prior to being
       permitted to discharge into the larger drainage system. All other clean
       stormwater, such as roof water, can be collected on site and discharged
       through a single underground drain line directly into the existing drainage
       system, bypassing the grease/oil arrestor/gross pollutant trap. To this end, a
       detailed maintenance plan shall be prepared for the proposed grease/oil
       arrestors/gross pollutant trap, which shall be submitted to the Council for
       approval prior to obtaining a Development Permit for Operational Works. The
       approved maintenance plan shall be incorporated in the Community
       Management Scheme for the development and a copy of this shall be
       provided for Council’s records prior to commencement of the approved Use.
       A Development Permit for Building Works shall not be granted until a
       Development Permit for Operational Works has been issued in regard to the
       drainage scheme.

       45. All site stormwater drainage shall be by means of a gravity system.

2.0    EXISTING CONDITIONS

The subject site is currently undeveloped and generally supports only grasses
and sucker regrowth.

The site falls at moderate grades away from a ridge near Serenity Close
towards Private Open Space for Conservation and Waterway Protection
(POSCWP) areas to the west.

An existing boulder retaining wall along the sites western boundary separates
the development site from POSCWP areas and the adjacent access pathway to
Noosa Inlet.

The entire site consists of loose, poorly graded dune sand and as such
contains no defined overland drainage paths since rainwater infiltrates
directly through the permeable surface.

Refer detail survey at Appendix E.



3.0    PROPOSED DEVELOPMENT

The proposed development is to consist of two (2) multi storey residential
buildings with a basement carparking under and a shared driveway
arrangement. Each building is to be surrounded by extensive terraced
landscape areas, both hard and soft.




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A6107/L9/SMP/RevA/Aug 2021                                                       Page 2 of 7
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                     Brah101 Pty Ltd t/as ALTA PROJECTS