18164 - SBSMP - Rev 0

                                                                                          18164 - SBSMP/0
                                                                                                   Page 6




4 EXISTING DRAINAGE PATTERNS

4.1 Existing Infrastructure
Data obtained from the detailed site survey and Dial Before You Dig (DBYD) plans indicate the
following existing drainage infrastructure:
    1. A 375mm diameter stormwater main traversing the carriageways of David Low Way and
       Sandpiper Court, with a headwall outlet into the nature reserve, south of the subject site;

    2. An easement abutting the northern and western boundary of the existing shopping centre
       complex within the site, containing a stormwater main ranging from 300mm to 450mm in
       diameter, with a headwall outlet into the nature reserve, south of the subject site;

    3. A series of stormwater pipes and gully pits directing runoff from the shopping centre
       complex to a detention tank and a bio-retention basin prior to discharge to the nature
       reserve, south of the subject site;

Refer to Figure 4.1 for the existing stormwater infrastructure and drainage patterns.




                                                                                                     N




                                         Proposed
                                       Development
                                           Area




    Legend
    Sheet Flow Path
    Stormwater Pipe
    Stormwater Manhole
    Stormwater Gully Pit
    Headwall Outlet



                           Figure 4.1 – Existing Drainage Paths & Infrastructure


Site Based Stormwater Management Plan
Reconfiguration of a Lot and Mixed Use Development at 215 David Low Way, Peregian Beach