Scg 33132(L3)

                                                                                              SCG Consulting Engineers
                                                                                              ABN 68 669 675 790

12 August 2024
                                                                                              Unit 1/11 Project Avenue,
SCG Ref: 33132(L3)                                                                            Noosaville QLD 4566

By email: [email protected]                                                      P: 07 5455 5604
                                                                                              E: [email protected]


                                                                                              PO Box 1661,
Capital Prudential                                                                            Noosa Heads QLD 4567
C/- Pivotal Perspective Pty Ltd

                                                                                              scg-engineers.com

Dear Sir/Madam

                             Re: MCU23/0094, OPW23/0113, RAL23/0014
Lots 75-77 RP 71151, Lot 3 SP 208257, 79-83 Eumundi Noosa Rd Noosaville & 26 Headland Dr Noosaville

As discussed with Mark Lewis via a phone call on 12 August 2024, SCG Consulting Engineers request a change
to the MCU Decision Notice dated 13 May 2024, to revise Noosa Council’s Conditions 46 and 47 (see below). We
address our reasons for the requested variation of these conditions below.

Roofwater Capture and Reuse:

46.    In conjunction with the development application for Building Works, the hydraulic design of the roofwater
       drainage system for buildings 2, 3, 4, 5, 6 and 7 is to be piped to the roofwater storage tanks nominated
       on drawing 33132-SW1.1 Rev C by SCG Consulting. The roofwater system is to be designed to convey
       the 1%AEP event of critical duration, with a 20% increase in rainfall intensity to account for future climate
       change.

47.    A total of 39kL of roofwater storage is to be provided for the development as shown on drawing 33132-
       SW1.1 Rev C by SCG Consulting. The roofwater is to be plumbed for reuse to the following non-potable
       fixtures, with the detail provided with the hydraulic design submitted in conjunction with the development
       application for Building Works:

       •   Communal landscape irrigation

       •   Bin wash down

Statement of Reasons:

46.    The on-site detention systems outlined in our SWMP only requires roofwater from buildings 5, 6 and 7 to
       be directed to a underground detention tanks, in order to detain flows up to the 1% AEP (Q100) storm
       event. The remainder of the buildings should only be required for roof water drainage design up to 5%
       AEP (Q20) in accordance with the National Construction Code (NCC). Implementing this condition would
       intake a re-design of the approved civil engineering set for the associated sub-catchment as the
       underground stormwater network has not been designed for the 1% AEP storm event. We request this
       condition is re-worded to only include buildings 5, 6 and 7.