Attachment 2 - Stormwater Management Plan · 131998.981126.5

                                                                                 Callaghan & Toth

1.     INTRODUCTION

The site subject to this report is at No.202 Eumundi Noosa Rd Noosaville. One existing shed
on the lot will be removed and replaced by a larger shed and will feature a new concrete
hardstand area and short section of road to link carpark areas. As well, an existing church
building will be upgraded to feature a new entry foyer and covered barbeque area.

The stormwater management assessment undertaken on this project considers the increase
in impervious area of the lot due to the proposed shed and hardstand area. Then, it
determines which measures can be incorporated into the design to attenuate the resultant
increase in runoff back to predevelopment levels. The new entry foyer and barbeque area
will capture stormwater and be directed to the existing site drainage system.

The existing shed catchment drains to Satinwood St before discharging to Lake Doonella
Bushland Reserve. The existing church building catchment drains to Ferntree Ct before
discharging to a portion of Lake Doonella Park.

The existing shed and church building site currently drain to Satinwood St and Ferntree Ct,
respectively, as shown on Figure 1.1. The proposed new drainage system will replicate the
existing catchment.


1.1    Response to Conditions of Approval

TABLE 1.1: Response to Pre-Lodgement Notes
 Item         CONDITION                                                    RESPONSE
 Mark Lewis -1   The proposed shed and associated hardstand areas          Details shown on Figure
                 will most likely increase stormwater runoff from the      1.2
                 site. Any application will need to include a stormwater
                 management plan prepared by a suitably qualified
                 person. The SWMP must demonstrate that the
                 development will not cause a downstream worsening
                 for other properties and that the downstream drainage
                 system has the capacity to cater for the runoff.
                 Runoff from the other smaller additions to the
                 buildings will need to be directed to the existing site
                 drainage system.


2.     DESCRIPTION

The site is on a 19,841 m2 parcel of land which has frontage to Eumundi Noosa Rd. Onsite
drainage in the westerly portion of the lot discharges to an underground DN450 stormwater
system on Satinwood St controlled by Noosa Council. Onsite drainage in the central portion
of the lot discharges to an underground DN300 stormwater system on Ferntree Ct controlled
by Noosa Council. Onsite drainage in the eastern portion of the lot discharges to an
underground DN300 stormwater system that flows towards Silkwood Dr and is controlled by
Noosa Council




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