SCG 31030 Stormwater Management Plan · OPW22/0319

1.0      INTRODUCTION:

SCG Consulting Engineers have been commissioned to provide a Storm Water Management Plan for the
proposed development at 25-27 Toolar Street Tewantin.

The proposed development involves the construction of 8 townhouses.

The objective of this stormwater management plan is to demonstrate that the following measures will be
incorporated into the design and construction of the development:

         •      Maintain stormwater quality – Protect receiving waters (during and post construction)

         •      Manage storm water peak flow rates of runoff and existing flow path characteristics

         •      Protect against flooding

         •      Adopt Water Sensitive Urban Design (WSUD) principles throughout

         •      Stormwater Harvesting and re-use.

This report should be read in conjunction with our detailed stormwater management plan (Appendix C) drawing
(No.) 31030 OW5.1, OW5.2.

The following development has been assessed against the following guidelines and planning documents:

         •      Queensland Urban Drainage Manual 2013

         •      Water by Design – Deemed to Comply Solutions

         •      Stormwater Quality Management S.E. Queensland

         •      Noosa Shire Council Planning Scheme 2020

         •      AS/NZS 3500.3:2018 – Plumbing and Drainage Part 3 – Stormwater Drainage.


2.0      EXISTING SITE DESCRIPTION:

The proposed construction area is across two allotments. The allotments are described as Lots 1 and 2 on
RP73072 and are within Noosa Shire Council. Access to the site is provided by Toolar Street.

The site is currently occupied by two timber framed dwellings.

Surface grades within the site generally slope down from the southern rear boundary towards Toolar Street.


3.0      PROPOSED DEVELOPMENT:

8 new townhouses are proposed for the site

The proposed development plans are as detailed in Robin Spencer Architects plans.


4.0      EXSITING DRAINAGE:

4.1      Existing Drainage and Infrastructure:

Existing Council Stormwater drainage exists in Toolar Street. This consist of the following:

         •      A side entry pit within the kerb on the opposite side of Toolar Street from the site.




 SCG Consulting engineers                                  3                                SCG Ref: 31030(SWM)


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1.0 INTRODUCTION:

SCG Consulting Engineers have been commissioned to provide a Storm Water Management Plan for the
proposed development at 25-27 Toolar Street Tewantin.

The proposed development involves the construction of 8 townhouses.

The objective of this stormwater management plan is to demonstrate that the following measures will be
incorporated into the design and construction of the development:

° Maintain stormwater quality — Protect receiving waters (during and post construction)
° Manage storm water peak flow rates of runoff and existing flow path characteristics
° Protect against flooding

° Adopt Water Sensitive Urban Design (WSUD) principles throughout
° Stormwater Harvesting and re-use.

This report should be read in conjunction with our detailed stormwater management plan (Appendix C) drawing
(No.) 31030 OW5.1, OW5.2.

The following development has been assessed against the following guidelines and planning documents:
° Queensland Urban Drainage Manual 2013
° Water by Design — Deemed to Comply Solutions
° Stormwater Quality Management S.E. Queensland

° Noosa Shire Council Planning Scheme 2020

AS/NZS 3500.3:2018 — Plumbing and Drainage Part 3 — Stormwater Drainage.

2.0 EXISTING SITE DESCRIPTION:

The proposed construction area is across two allotments. The allotments are described as Lots 1 and 2 on
RP73072 and are within Noosa Shire Council. Access to the site is provided by Toolar Street.

The site is currently occupied by two timber framed dwellings.

Surface grades within the site generally slope down from the southern rear boundary towards Toolar Street.

3.0 PROPOSED DEVELOPMENT:
8 new townhouses are proposed for the site

The proposed development plans are as detailed in Robin Spencer Architects plans.

4.0 EXSITING DRAINAGE:
41 Existing Drainage and Infrastructure:
Existing Council Stormwater drainage exists in Toolar Street. This consist of the following:

° A side entry pit within the kerb on the opposite side of Toolar Street from the site.

SCG Consulting engineers 3 SCG Ref: 31030(SWM)