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Attached to the e-mail 132007.2398.02 Request to change existing approval (2 of 3) Engineering report & plans, Stormwater Plan.

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                           PREPARED FOR PALM LAKES RESORTPALM LAKE RESORTS
                                                  DECEMBER 2014 B14158.W-01A
                                                                    ORIGINAL
                                                       WATER & ENVIRONMENT




Concept Stormwater Quality Management Plan (SWQMP) Cooroy
              Retirement Community, Trading Post Road, Cooroy
Full text of the other 29 pages

Page 2

COMMERCIAL IN CONFIDENCE

All intellectual property rights, including copyright, in
designs developed and documents created by Calibre
Consulting (Qld) Pty Ltd remain the property of this
company. Any use made of such design or document
without the prior written approval of Calibre Consulting
(Qld) Pty Ltd will constitute an infringement of the rights of
the company which reserves all legal rights and remedies
in respect of any such infringement.

The information, including any intellectual property,
contained in this proposal is confidential and proprietary to
the Company. It may only be used by the person to whom
itis provided for the stated purpose for which it is provided
and must not be imparted to any third person without the
prior written approval of the Company. The Company
reserves all legal rights and remedies in relation to any
infringement of its rights in respect of its confidential
information

DOCUMENT CONTROL
B14158.W-01A

Calibre Consulting
Level 6, 199 Grey Street
SOUTH BRISBANE QLD 4101

Ph: (07) 3895 3444
© 2014

fow | issue Details fasnor | onto ne

12/2014 TO CLIENT fe MS RPEQ 9485

 

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TABLE OF CONTENTS
1   INTRODUCTION ............................................................................................................... 1
    1.1    Objective                                                                                                             1
    1.2    Scope                                                                                                                 1
2   SITE CHARACTERISTICS ................................................................................................ 2
    2.1    Location                                                                                                              2
    2.2    Topography And Site Drainage                                                                                          3
3   CONCEPT BASIN DESIGN ............................................................................................... 4
4   STORMWATER QUALITY ................................................................................................ 5
    4.1    Pollutants Of Concern                                                                                                 5
    4.2    Water Quality Objectives                                                                                              5
    4.3    Stormwater Quality Management Strategy                                                                                5
           4.3.1    Utilised Treatment Systems                                                                                   6
           4.3.2    Proposed End-Of-Line Systems                                                                                 6
    4.4    Music Modelling                                                                                                       6
           4.4.1    Meteorological Data                                                                                          7
           4.4.2    Source Nodes                                                                                                 7
           4.4.3    Drainage Links                                                                                               8
           4.4.4    Treatment Nodes                                                                                              8
    4.5    Music Modelling Results                                                                                               9
5   FREQUENT FLOW MANAGEMENT & WATERWAY STABILITY MANAGEMENT........ 10
    5.1    Frequent Flow Management                                                                                            10
    5.2    Waterway Stability Management                                                                                       10
6   CONCLUSION ................................................................................................................. 11
7   RECOMMENDATIONS ................................................................................................... 11
8   REFERENCES ................................................................................................................ 12



TABLES

Table 3-1: Stormwater Detention Basin Concept Details                                                                           4
Table 4-1: Load Reduction Water Quality Objectives                                                                              5
Table 4-2: Bioretention Basin Modelled Parameters                                                                               8
Table 4-3: Pond Node Configuration                                                                                              8
Table 4-4: Wetland Treatment Node Details                                                                                       9
Table 4-5: MUSIC Modelling Reports                                                                                              9
Table 5-1: Frequent Flow Management Objective Calculations                                                                     10



FIGURES

Figure 2-1: Approximate Location of Site (Source: UBD 2006)                                                                      2

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APPENDICES

APPENDIX A   CONCEPT MASTERPLAN LAYOUT
APPENDIX B   MUSIC MODELLING
APPENDIX C   STORMWATER MANAGEMENT PLAN DRAWINGS

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                                                                                                  CALIBRE CONSULTING




1 INTRODUCTION
Calibre Consulting (QLD) Pty Ltd (formerly Brown Consulting) has been commissioned by Palm Lake Resort to prepare a
“Concept Stormwater Quality Management Plan” to support the permissible change application for a retirement
community development located on Trading Post Road Cooroy. The development comprises of Independent Living Units
(ILUs), an Aged Care Facility and associated community facilities, refer to Palm Lake Resort’s Master Plan provided in
Appendix A for the development layout.

It is noted that the report is to be provided for the current site DA under the Noosa Shire Council (NSC), Council
Application Reference, 2007/2398 dated 16 January 2014.

1.1       OBJECTIVE
The objective of this report is to provide a Stormwater Quality Management Plan for the development. This is consistent
with the Stormwater Quality Conditions in the Noosa Shire Council (NSC) Negotiated Decisions Notice (16 January
2014). The objectives of the analyses undertaken is to:

   Update the stormwater quality management strategy under current local guidelines; and meet Water Quality
    Objectives (WQOs) under the State Planning Policy 2014 (SPP 2014).

It is noted that this report does not address stormwater quantity, flooding or peak flow control. Stormwater detention
strategy and volumes are as per Brown consulting Report No. B07056-02A dated June 2008 and consistent with NDN
Condition 66.

1.2       SCOPE
The scope of works to achieve the abovementioned objectives are outlined below.

   Review and update stormwater quality management strategy to current legislation and guidelines;
   Update past modelling to current standards and recent modelling software packages; and
   Resize control devices to achieve required WQO’s.
In addition to the above, an assessment of waterway stability and frequent flow management requirements under SEQ
Regional Plan Guidelines No.7 (2009) have also been provided.




B14158.W-01A | COOROY RETIREMENT VILLAGE| PALM LAKE RESORTS                                                              |1

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2 SITE CHARACTERISTICS
2.1      LOCATION
The development site is located on two existing properties in the Noosa Shire Council (NSC) Local Government Area.
The property description are presented below:

   1/RP215922 19 Trading Post Road, Cooroy;
   2/RP165418 4 Lamonts Road, Cooroy.

The site occupies a total area of 11.94 ha and is bounded by Trading Post Road and an undeveloped lot to the east,
bushland to the north, Pearsons Rd to the south and Cooroy Connection Road (Elm Street) to the west. Figure 2.1 below
indicates the approximate location of the site.
                              Figure 2-1: Approximate Location of Site (Source: UBD 2006)




                                                               SITE




      COOROY CONNECTION ROAD




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                        |2

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2.2       TOPOGRAPHY AND SITE DRAINAGE
The site is located on the eastern side of a north-south ridge line upon which a railway corridor lies. The site therefore
falls from the western boundary with Cooroy Connection Road to the eastern boundary with Trading Post Road and the
neighbouring eastern lot. The highest point on the site is near the intersection of Cooroy Connection Road and Pearsons
Road at RL 111 m AHD. The lowest point is at the northern end of the site between the existing northern dam and
eastern boundary at approximately RL 98 m AHD.

Stormwater runoff from external areas, including part of the railway corridor and Cooroy Connection Road, discharge to
the site at two locations. Runoff drains through existing gullies from each of these locations. The gullies are referred to as
‘central gully’ and ‘southern gully’. The average grade of the central gully is approximately 1.8% and the southern gully is
approximately 3.5%, as measured from the western boundary to the eastern boundary.

Each gully leads to existing dams on the eastern side of the site. Both gullies discharge across the eastern boundary to
neighbouring rural lots. The dams are referred to as ‘central dam’ and ‘southern dam’. At the northern end of the site
there is a third existing dam, referred to as ‘northern dam’.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                              |3

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3         CONCEPT BASIN DESIGN
Brown Consulting previously provided a Concept Stormwater Management Report in 2008 (Report No. B07056-02A
dated June 2008) which analysed catchment hydrology, flood investigation, culvert capacities, detention basin modelling,
stormwater quality modelling and water balance modelling. This report (Report No. B14158.W-01A) however only
considers stormwater quality. The previous report proposed three detention basins with stormwater quality measures.
Locations and general sizing of basins will remain consistent in the updated strategy.

Incorporated into each of the basins are stormwater quality measures that will form part of the water quality treatment
train for the site. Flows leaving the basins will discharge offsite to the downstream drainage system.

Concept basin designs in this report has also adopted preliminary detention areas and detention storage provided from
the previous report (No. B07056-02A) and incorporated in the concept designs of the stormwater quality systems. Refer
to Table 3-1 below.

                                   Table 3-1: Stormwater Detention Basin Concept Details


                                                                Previous Report:       Current Report:
                                                                B07056-02A             B14158.W-01A
                Basin                       Basin Details       (June 2008)            (December 2012)
               Northern Basin           Detention Storage m3                 1330m3                   1360m3
                                        Min. Detention Level              RL98.40m                  RL 99.4m
                                        Embankment Level                 RL100.30m              RL101.30m
                                                         2                         2
                                        Detention Area m                     1290m                    1390m2


               Central Basin            Detention Storage m3                 1940m3                   1980m3
                                        Min. Detention Level             RL 99.60m                   RL 99.6
                                        Embankment Level                 RL101.00m              RL101.00m
                                                         2                         2
                                        Detention Area m                     2200m                    2810m2


               Southern Basin           Detention Storage m3                2135 m3                  2240 m3
                                        Min. Detention Level             RL101.50m                  RL101.5m
                                        Embankment Level                 RL103.00m              RL103.00m
                                                         2                         2
                                        Detention Area m                      2630m                   2470m2
                           1
                               – Basins have been preliminary sized for 1 to 100 year ARI events.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                             |4

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4 STORMWATER QUALITY
It is expected that the proposed development will increase the export of pollutants in runoff from the subject site. A
treatment train of a suitable Stormwater Quality Improvement Devices (SQID’s) are been proposed to intercept and
capture the pollutants so that the potential impacts on waterways downstream are mitigated. This section discusses:

     The identification of key stormwater pollutants associated with the proposed development;
     The Water Quality Objectives (WQO’s) identified for the catchment;
     Proposed measures to mitigate the increase in pollutant export; and
     Modelling of the proposed measures and comparison to the identified WQOs.

4.1         POLLUTANTS OF CONCERN
Typical key pollutants expected to be generated during the operational (post-construction) phase of the planned
development are listed as follows, with those presented in capitals being the key pollutants to be targeted for treatment:

     LITTER                                                    HEAVY METALS (associated with fine sediments)
     SEDIMENT                                                  Surfactants
     Oxygen demanding substances (possibly present)            Organochlorines & organophosphates
     NUTRIENTS (N & P)                                         Thermal pollution
     Pathogens / Faecal coliforms                              pH altering substances
     Hydrocarbons

Only the key pollutants will be further addressed in this report; however, the treatment train developed will adequately
mitigate the other pollutant loads. As heavy metals will predominately be associated with fine sediment, controls
proposed to reduce total suspended solids will also adequately reduce loads of heavy metals.

4.2         WATER QUALITY OBJECTIVES
Healthy Waterways WSUD Technical Guidelines (2006) outlines stormwater pollutant load reduction objectives required
for all developments within South East Queensland. These objectives have been adopted as the WQOs for conceptual
modelling of the development site and are summarised in Table 4.1 below.
                                   Table 4-1: Load Reduction Water Quality Objectives


                           Total Suspended         Total Phosphorus                                 Gross Pollutants
    Pollutant              Solids (TSS)            (TP)                     Total Nitrogen (TN)     (GP)
Load Reduction Target              80%                     60%                      45%                      90%
It should be noted that the above load based objectives are consistent with those specified in the SEQ Regional Plan
Guideline No. 7, required under the SPP 2014.

4.3         STORMWATER QUALITY MANAGEMENT STRATEGY
A treatment train of suitable Stormwater Quality Improvement Devices (SQIDs) has been proposed to mitigate the
potential increase of stormwater pollutant loads. Three end-of-line systems have been provided for the development to
treat stormwater runoff before discharging downstream and incorporated into the site’s basins. The locations of these
devices SQIDs are shown on Drawing No. B14158.W-SK05 in Appendix C.

As presented in Drawing No. B14158.W-SK05 some minor external catchment flows through the site and will also be
treated by the end-of-line systems. Treatment of stormwater runoff from external catchment areas of the railway corridor
and Cooroy Connection Road adjacent to the site is not required by Council. Not treating these external areas would be
difficult in practice as they drain through the site and could not practically be diverted around treatment measures. The
opportunity to treat stormwater runoff from these areas has been taken and will benefit the water quality of downstream


B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                              |5

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systems. The treatment of external catchments is consistent with the strategy previously provided to Council (Report
No. B07086-2A).

It is noted that any stormwater likely to contain grease and oil (i.e. from carparking areas) shall be managed via grease
and oil arrestors prior to treatment to bioretention basins and constructed. This requirement will identified and
incorporated if necessary during the detailed design.

4.3.1     UTILISED TREATMENT SYSTEMS

Bioretention Systems, Water Quality Control Ponds (WQCP) & Constructed Wetlands have been incorporated in the site
stormwater quality management strategy. The details of the treatment systems are provided below.

Bioretention Systems - utilise a sandy loam soil based media to filter runoff. Sediment particles and suspended solids are
trapped on the surface of the filter media, while micro-organisms and vegetation planted in the filter removes dissolved
nutrients (nitrogen and phosphorus) through biological uptake processes. Subsoil drainage provided below the filter
media allows for the treated runoff to discharge from the bioretention basin.
Constructed Wetland – Constructed wetlands are shallow, extensively vegetated water bodies that use enhanced
sedimentation, fine filtration, and pollutant uptake processes to remove pollutants from stormwater.
Water Quality Control Pond (WQCP) –The WQCP reduces stormwater pollutants associated with fine particulates such
as TSS, metals, nutrients and toxicants as well as soluble contaminants. The water bodies/ponds will have enhanced
nutrient removal by incorporating macrophyte planting areas and open water zones. They will ensure that adequate
pollutant retention is achieved before discharging offsite to adjacent properties. WQCP have a permanent water storage
volume.

4.3.2     PROPOSED END-OF-LINE SYSTEMS

Three end-of-line stormwater quality systems are proposed in the detention basin for the development and are
summarised below.

Northern Basin (Bioretention System) - The northern portion of the development site (Catchment A) is to be treated by a
bioretention system. The system has no permanent water. Refer to Drawing No. B14158.W-SK07 for system details.

Central Basin (Constructed Wetland) - The central basin is proposed to be an open water feature and is to be treated by
incorporating macrophyte planting areas. This system will act as a constructed wetland for stormwater quality treatment
purposes with a deep open water zone. The open water body will be topped up with treated stormwater from the
Southern Basin during rainfall events. The Central Basin will treat Catchment B of the development. Refer to Drawing
No. B14158.W-SK08 for system details.

Southern Basin (WQCP and Bioretention System) – The southern basin comprises of a bioretention system and WQCP.
Stormwater is treated by a bioretention filter prior to discharging in into the WQCP. There is no permanent water body in
the bioretention system. The southern basin treats stormwater from Catchment C of the development which includes the
Clubhouse, Bowling Green, and the Aged Care Facility. Refer to Drawing No. B14158.W-SK09 for system details.

4.4       MUSIC MODELLING
Water quality modelling of the proposed development has been undertaken using the Model for Urban Stormwater
Improvement Conceptualisation (MUSIC) Version 5.1.16, developed by the Cooperative Research Centre for Catchment
Hydrology (CRCCH). MUSIC enables the user to conceptualise the transfer of pollutants through a stormwater drainage
system and provides an aid in quantifying the effectiveness of the proposed stormwater quality management strategy.
MUSIC only provides quantitative modelling for Total Suspended Solids (TSS), Total Phosphorous (TP), Total Nitrogen
(TN), and Gross Pollutants (GP).




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                               |6

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The MUSIC model was setup generally in accordance with Water by Design MUSIC Modelling Guidelines (2010). The
subsequent sections discuss the model configurations adopted for the analysis.

 Developed Site Only No Mitigations.
 Model name: B14188.W_Umitigated.

 Developed Mitigated (with mitigation measures & external catchment).
 Model name: B14158.W_Final Strategy Mitigated.



4.4.1 METEOROLOGICAL DATA

Six minute pluviographic data was sourced from the Bureau of Meteorology (BOM) for Cooroy Composite (Station No.
40059). In accordance with Table 3.1 from MUSIC Modelling Guidelines (2010), the 10 year period from 1st January
1973 to 31st December 1983 has been adopted for the rainfall duration. The mean annual rainfall for this period is
1,600mm. The mean annual evapotranspiration for the modelled period is 1,629mm.

4.4.2 SOURCE NODES

Source nodes are sub-catchments that are defined for MUSIC modelling purposes. The site was divided into sub-
catchments as shown in Drawing No. B14158.W-SK05 in Appendix C.

The split catchment approach has been used to set up all source nodes in MUSIC. The MUSIC Modelling Guidelines
(2010) have been used to configure three types of surfaces, Roof, Road and Ground, to be modelled for each sub-
catchment. All sub-catchments within the model extent were assigned either Urban Residential or Commercial
Residential dependent on land use. Refer to Appendix B for MUSIC node configurations for the site. Split sub-catchment
node areas were calculated based on Concept Master Plan presented in Appendix A.

Rainfall runoff parameters for all nodes were assigned as residential land-use, in accordance with Table 3.7 of the
MUSIC Modelling Guidelines (2010). Pollutant export properties for source nodes have been configured according to the
industrial land use category in accordance with Table 3.8 of the MUSIC Modelling Guidelines (2010).

Stochastic generation estimation and serial autocorrelation set to zero has also been adopted.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                        |7

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4.4.3 DRAINAGE LINKS

No routing was adopted for drainage links within MUSIC model in accordance with Section 4.17 of the MUSIC Modelling
Guidelines (2010). This assumes flows and associated pollutants from all parts of the catchment arrive at the treatment
nodes at the same time. This is conservative as it means that MUSIC may overestimate the overflow volumes.

4.4.4 TREATMENT NODES

4.4.4.1 BIORETENTION TREATMENT NODE

Bioretention treatment nodes were used to model the proposed bioretention filter in the northern and southern basin and
bio-pod. Default K and C* values were adopted for these treatment nodes. These treatment nodes were set up generally
in accordance with the MUSIC Modelling Guidelines (2010) and Interim MUSIC Bioretention Treatment Node (2013).
Refer to Table 4-2 below, Bioretention Treatment Node Configuration. All other parameters have been adopted from
MUSIC Modelling Guidelines (2010).
                                  Table 4-2: Bioretention Basin Modelled Parameters


                     Parameter                                   Northern Basin     Southern Basin
                     Surface Area (m2)                                450                350
                     Filter Area (m2)                                 450                350
                     Extended Detention Depth (m)                      0.3                0.3
                     Filter Depth (m)                                  0.6                0.4
                     Filter Media Type                            Sandy Loam         Sandy Loam
                     Saturated Hydraulic Conductivity of              200                200
                     Filter Media (mm/hr)
                     TN Content of Filter Media (mg/kg)               400                400
                     Orthophosphate Content of Filter Media            50                 50
                     (mg/kg)
                     Overflow Weir (m)*                                45                 35
                       * Overflow weir has been conservatively modelled as 10% of the filter area.

4.4.4.2 POND NODE

A pond node was used to model the WQCP for southern basin. The MUSIC configuration are provided in Table 4-3
below. Details are shown on the Drawing No. B14158.W-SK08 in Appendix C.

                                           Table 4-3: Pond Node Configuration


                                         Pond Parameter             Southern Basin
                                 Surface Area (m²)                           759
                                 Extended Detention Depth (m)                0.50
                                 Permanent Pool Volume (m³)                  800
                                 Notional Detention Time (hrs)               23.7
                                 Equivalent Pipe Diameter (mm)               52




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                        |8

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4.4.4.3 WETLAND NODE

The wetland treatment node within MUSIC has been used to represent the constructed wetland in the central
basin. A summary of the wetland details used to configure the treatment node is presented in Table 4-4 below.

                                             Table 4-4: Wetland Treatment Node Details


                                                   Parameter                       Central Basin
                                     Surface Area (m²)                                    1700
                                     Extended Detention Depth (m)                           0.4
                                     Permanent Pool Volume (m³)                           1072
                                     Evaporative Loss as % of PET                           0.0
                                     Equivalent Pipe Diameter (mm)                          41
                                     Notional Detention Time (hrs)¹                       76.3
  ¹Note: Notional Detention time of 76.3. (Approximately 3 days) is to allow for the Central Basin to be topped up from treated water from the
                                     Northern Basin. Refer to Drawing No. B14158.W – SK05 for details.


4.5        MUSIC MODELLING RESULTS
Results for the proposed stormwater quality management strategy is presented in Table 4-5 below.

                                                 Table 4-5: MUSIC Modelling Reports


                                                                TSS                 TP                TN           Gross Pollutants
      Description                                              (kg/yr)            (kg/yr)           (kg/yr)            (kg/yr)
    Developed Site Only (Without Mitigation)                    17600              52.7               370                  3170
    WQOs (Percentage Reduction)                                  80%               60%               45%                    90%
    Load Retention Target                                       14080              31.6               167                  2850
    Developed Site plus External Catchment
                                                                24600              65.1               427                  3430
    (Without Mitigation)
    Developed Site plus External Catchment
                                                                10400              32.4               255                     0
    (With Mitigation)
    Load Retention Achieved                                     14200              32.7               172                  3430
    Load Retention Achieved as % of
                                                                 81%               62%               47%                   100%
    Developed Site Load
    Objective Achieved?                                          Yes               Yes                Yes                   Yes

The above results indicate that the proposed strategy is effective in treating pollutant loads from the proposed
development to achieve the WQO’s as required under Healthy Waterways WSUD – Technical Guidelines for SEQ (2006)
and SPP 2014.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                                                |9

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5         FREQUENT FLOW MANAGEMENT & WATERWAY STABILITY
          MANAGEMENT
5.1       FREQUENT FLOW MANAGEMENT
As a result of increase to impervious surface areas, piped drainage and lined overland flow paths, the development has
the potential to increase the number and frequency of surface runoff events which may result in a disturbance to
downstream aquatic ecosystems. This section discusses the strategy to manage frequent flows from the development
and analysis undertaken to demonstrate its compliance with current requirements.

The management of frequent flows is now regulated by the SEQ Regional Plan 2009-2031 Implementation Guidelines
No.7 - Water Sensitive Urban Design (2009). The design objective to manage frequent flows from urban development
requires:

   10mm of initial runoff from all impervious surfaces is captured and managed for development with less than or equal
    to 40% impervious surfaces; or
   15mm of initial runoff from all impervious surfaces is captured and managed for development with greater than 40%
    impervious surfaces.

For the development the total impervious surface is greater than 40% and therefore the first 15mm of runoff capture from
impervious surfaces is required. In-lieu of any local guideline the Moreton Bay Regional Council (MBRC) Frequent Flow
Management equation has been used to determine whether the temporary ponding provided within the proposed SQIDs
will achieve the Frequent Flow Management requirement. The results are shown in Table 5.1 below. Based on these
results, it can be seen that the frequent flow management objectives for the development will be achieved.

                             Table 5-1: Frequent Flow Management Objective Calculations


                       Design Component                Catchment A      Catchment B        Catchment C

               Frequent Flow Volume (V) (m3)                220               406               480
               Treatment Volume (Vs) (m3)                   135               680               400
               *3Vs+2/3 Vr+ Vx (m3)                         405              2040               1200
               Objective met? 3Vs+2/3 Vr+ Vx> V             Yes               Yes               Yes
              *Objective Formula Updated by MBRC (25th October 2012), values Vr and Vx are set to zero

5.2       WATERWAY STABILITY MANAGEMENT
The SEQ Regional Plan Guidelines No.7 (2009) for requirements of Waterway Stability Management, where the design
objective is to limit the post development-development peak 1 year ARI event discharge within the receiving waters to the
pre-development peak.

The previous initial stormwater quantity analysis in Report No. B07056-02A includes analysis of peak flows for a 1 year
ARI rainfall event in which developed peak flows have been mitigated back to existing conditions in all recurrence
intervals. Therefore the Waterway Stability Management objective has been previously met. The previous detention
strategy has been incorporated and therefore it is anticipated that the strategy will be able to comply with the Waterway
Stability Management with hydrological analysis to confirm.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                          | 10

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6 CONCLUSION
This Concept Stormwater Quality Management Plan has been prepared to support the permissible change application for
the Palm Lakes Cooroy Retirement Community development. The outcomes of the stormwater investigations are listed
below:
 The proposed Stormwater Quality Management Strategy comprising of a bioretention systems, constructed wetland
    and WQCP have been modelled in MUSIC to demonstrate the required WQO’s under Healthy Waterways WSUD –
    Technical Guidelines for South East Queensland (2006) and SPP14 will be achieved.
 Waterway stability management requirements and Frequent Flow Management requirements under the SEQ
    Regional Plan 2009-2031 Implementation Guideline No.7 have been satisfied.


7 RECOMMENDATIONS
It is recommended that this Concept Stormwater Quality Management Plan be approved on the basis that acceptable
outcomes will be provided for stormwater and flood management. The design strategies presented in this report are to be
incorporated into future detailed design. Detailed design may result in changes to the proposed management strategies
but the design objectives are to be maintained. Updated stormwater quantity analysis will also be provided during
detailed design.




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                                      | 11

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8 REFERENCES
   Bureau of Meteorology (2001), Climatic Atlas of Australia (Evapotranspiration).
   Engineers Australia (2006), Australian Runoff Quality. A guide to Water Sensitive Urban Design.
   Environmental Protection Agency (QLD) (2006). Environmental Protection (Water) Policy 1997. Noosa River
    Environmental Values and Water Quality Objectives.
   Healthy Waterways (2006). Water Sensitive Urban Design – Technical Design Guidelines for South East
    Queensland (2006).
   Noosa Council (2006). The Noosa Plan. Planning Scheme Policy.
   Queensland Government (2006), Queensland Water Quality Guidelines 2006. Environmental Protection Agency
    (QLD).
   Queensland Urban Drainage Manual (QUDM 2013).
   Queensland Water Commission (QWC) (2008). South East Queensland Water Strategy – Draft. Queensland Water
    Commission.
   Water by Design, Construction & Establishment Guidelines (2011).
   FAWB Guidelines for Filter Media Biofiltration Systems (Version 301, 2009).
   Water by Design, MUSIC Modelling Guidelines (2013).
   SEQ Regional Plan 2009-2031 Implementation Guideline No. 7.
   Qld State Government, State Planning Policy (2014).




B14158.W-01A | COOROY RETIREMENT COMMUNITY| PALM LAKE RESORTS                                           | 12

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APPENDICES


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APPENDICES

 

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APPENDIX A CONCEPT MASTERPLAN LAYOUT


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CALIBRE CONSULTING

APPENDIX A CONCEPT MASTERPLAN LAYOUT

Page 19

                                                                                                                                                                   145


                                                                                                                                                                   144                               DETENTION
164   163   162   161   160   159   158   157     156   155    154     153       152        151    150        149      148    147        146

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                                                                                                  120        121       122    123        124
                                          115


                                          114            116    117        118   119

                                                                                                  88         87        86     85         84
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                                                         111    110        109   108                                                                           DETENTION

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                                            107                                                                        90
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                                                                                                                                                                                                                                         0m                                  50m             100m            150m   200m


                                                                                                                                                                                                                                                                                      SCALE 1:2500 (AT A3)


                                                                                                                                               OVERALL SITE PLAN


[OCR of page images]
 

   

 

 

 
 
 

ENTRY
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152

 

 

151 | 150

 

0 | 434

 

 

132

 

 

143

 

142

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LANDSCAPE
‘TREATMENT

 

 

 

 

 

ROOF OVERHANG
WITHIN SETBACK

18,000mm_MINIMUM

 

 

   

 

 

 

 

 

13,000mm

150mm SETBACK tH

 

 

RESIDENCE
Max. Cover 65.0% Total

1500mm SETBACK LINE

  

 

EDGE OF CARRIAGEWAY

 

 

 

 

eee

 

FIRE RATED WALL 60/60/60

 

— SITING CONSTRAINTS °°"
Or GENERIC SITE AREA — 234.0 Sq.m

 

 

PROPOSED RESORT DEVELOPMENT—AREA 99,172sqm

TOTAL DWELLINGS = 164
MIN VISITOR SPACES = 33
MIN LOT SIZE = 230sqm
MIN LOT WIDTH = 13m
PRIVATE OPEN SPACE MIN/LOT = 20sqm
PRIVATE OPEN SPACE MIN WIDTH = 3m
MAX SITE COVER = 65%

CAR PARKING LOCATIONS MAY ALTER IN FINAL LAYOUT.

SETBACK MINIMUM:

PUBLIC ROAD = 6m
EDGE OF INTERNAL ROAD = 2m
REAR BOUNDARY = 1.5m
SIDE BOUNDARY = 1.5m
PROPERTY BOUNDARY = 3m

ROAD

TREATMENT

STOP

PEDESTRIAN
LINK TO BUS:

PROPOSED AGED CARE DEVELOPMENT—AREA 20,245sqm
TOTAL BEDS = 120
CAR PARKING LOCATIONS MAY ALTER IN FINAL LAYOUT.

  
 
  
    
    

TREATMENT

  
 
   

FREATMENT

LANDSCAPE
‘TREATMENT

 

       

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 50m 100m 150m 200m
NOTE: GARAGE MAY BE BUILT TO ZERO LOT LINE
SCALE 1:2500 (AT A3)
© coprricht DRAWING REFERENCE No, HOUSE TYPE 7 VARIATION DEVELOPMENT NAME DRAWN
PALM LAKE GROUP OWNS COPYRIGHT OF THESE PLANS. THEY OVERALL SITE PLAN
SHALL NOT BE USED FOR ANY OTHER PURPOSES OTHER THAN | ([ O-QO00-201 4 MHE COOROY EJ PalmLake
FOR THE ERECTION OF THE SUBJECT PROPERTY, BY OR ON
BEHALF OF PALM LAKE GROUP. Syieatt
ABN 77 915 457 991 ACN 005 277 038 RE COMMENTS DATE | DRWN ADDRESS PROJECT NORTH) SHEET No, SY
SOUTHPORT CENTRAL TOWER 3 A) MCU APPROVAL [19/11/14] EJ LOT |<> 0 1
LAWSON ST SOUTHPORT QLD 4215
PO BOX 10479 SOUTHPORT BC QLD 4215 BI] DETAISTAGING tener EJ | STREET |<> A 71 45790 ACN on 2708
PH: 07 5552 1300 FAX: 07 5552 1399 REVISED PARKING LANSON ST SOUTHPORT CLD 4015
Email: [email protected] C TO _ AGED CARE Lovie/i4| EY |SUBURB [<> 0 Cc ro r07 Bob? 1500 FAX-OT S6&o 1500"
Prcope |<> [ staTe|<> veo wn fae

 

 

 

 

 

 

 

 

 

 

 

S Website: www.PalmLakeResort.com.au

Y

Page 20

                             CALIBRE CONSULTING




APPENDIX B MUSIC MODELLING


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CALIBRE CONSULTING

APPENDIX B MUSIC MODELLING

Page 21

B14185.W Cooroy MUSIC Modelling Inputs
Name:                      B14158.W
Date                       14.12.2014
File:                      H:\B14\150-199\B14158.W\Stormwater\MUSIC
By:                        IP



Sub-catchment              Total Area (ha)        Road           Lot Area           Roof            Ground
A1                                        2.047          0.711              1.336           0.892            0.444
A2                                        0.311              0                  0               0            0.311
Total A                                   2.358          0.711              1.336           0.892            0.755
B1                                        3.795          1.111              2.684           1.784            0.900
B2                                        0.372              0                  0               0            0.372
Total B                                   4.167          1.111              2.684           1.784            1.272
C1                                        2.030          0.616              1.414          0.9812            0.433
C2                                        0.372          0.135              0.025           0.025            0.211
C3                                        0.388              0              0.217           0.217            0.171
C4                                        2.025          0.430              0.822           0.822            0.773
C5                                        0.636              0                  0           0.000            0.636
Total C                                   5.452          1.182              2.479           2.046            2.224
TOTALS                                   11.977

External Catchments
Catchment      Total Area (ha) Road            Roof           Ground
Ext A                    0.397        0.0452              0       0.352
Ext B                    2.056        0.3723              0       1.684
Ext C                    1.290        0.3421              0       0.948

SQIDS Inputs


[OCR of page images]
B14185.W Cooroy MUSIC Modelling Inputs

 

Name: B14158.W
Date 14.12.2014
File:

By: IP

H:\B14\150-199\B14158.W \Stormwater\MUSIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sub-catchment Total Area (ha) Road Lot Area Roof Ground
AL 2.047 0.711 1.336 0.892 0.444
A2 0.311 0 0 0| 0.311
Total A 2.358 0.711 1.336 0.892 0.755
B1 3.795 1.111 2.684 1.784 0.900
B2 0.372 0 0 0} 0.372
Total B 4.167 1.111 2.684 1.784) 1.272
C1 2.030 0.616 1.414 0.9812 0.433
C2 0.372 0.135 0.025 0.025 0.211
C3 0.388 0 0.217 0.217 0.171
C4 2.025 0.430 0.822 0.822 0.773
C5 0.636 0 0 0.000 0.636
Total C 5.452 1.182 2.479 2.046 2.224
TOTALS 11.977
External Catchments
Catchment Total Area (ha) |Road Roof Ground
ExtA 0.397 0.0452 0} 0.352
Ext B 2.056 0.3723 0} 1.684]
Ext C 1.290 0.3421 0} 0.948
SQIDS Inputs
Properties of Northern Basin (emer
Location Products >>
Inlet Properties Lining Properties
Low Flow By-pass (cubic metres per sec] 0.000 Is Base Lined? Yes [¥] No
High Flow By-pass [cubic metres per sec) 100.000 — Vegetation Propetion
ee $< ® Vegetated with Effective Nutrient Removal Plants
Extended Detention Depth (metres) 0.30
Surface Area (square metres) 450.00 Vegetated with Ineffective Nutrient Removal Plants
Filter and Media Properties Unvegetated
Filter Area (square metres) 450.00
Unlined Filter Media Perimeter (metres) 0.01 Ria
; : Overflow Weir Width (metres) 45.00
Saturated Hydraulic Conductivity (mm/hour) 200.00
Filter Depth (metres) 0.60 Underdrain Present? {¥| Yes [-] No
TN Content of Filter Media (mg/kg) 400 Submerged Zone With Carbon Present? (Yes [¥] No
Orthophosphate Content of Filter Media (mg/kg) 50.0 0.45
Infiltration Properties
Exfiltration Rate {mm/h} 8.00 Fluxes... | | Notes... More
| x Cancel F Back JS Einish

 

 

 

Page 22

 

Properties of Southern Basin Bio

 

wy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

     

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Location Southern Basin Bio | “} Products >>
y— Inlet Propertie: ;~ Lining Properties
Low Flow By-pass (cubic metres per sec] 0.000 Is Base Lined? © Yes No
High Flow By-pass (cubic metres per sec] 100.000 5
pve 1 Properties
;~ Storage Properties
Extended Detention Depth (metres) 0.30
y Surface Area (square metres) 350.00 © Vegetated with Ineffective Nutrient Removal Plants
Filter and Media Properties © Unvegetated ]
4 Filter Area (square metres) 350.00 J
Unlined Filter Media Perimeter (metres) 001 Re goceae
flow Weir Wi tr 35.00
Saturated Hydraulic Conductivity (mm/hour 200.00 ee as)
Filter Depth (metres) 0.40 SS eee esoy Yes [| No
TN Content of Filter Media (ma/kg) 400 Submerged Zone With Carbon Present? Yes No
Orthophosphate Content of Filter Media (mg/kg) 50.0
Depth (metres) 0.45
Infiltration Properties
Exfiltration Rate (mm/hr) 0.00 | Fluxes... | | Notes... | | More |
| 2% Cancel || <r Back || W Einish ||)
: ——— nad
Properties of Central Basin [meSaa]) Properties of Southern Pond (ct)
Location Central Basin Location Southern Porld
; Inlet Properties | -— Inlet Properties i
Low Flow By-pass (cubic metres per sec) 0.000 ey || Low Flow By-pass (cubic metres per sec} 0.000 |
High Flow By-pass (cubic metres per sec] 100.000 ! | | High Flow By-pass (cubic metres per sec] 100.000 i
Inlet Pond Volume (cubic metres) 30.0 | | Storage Properties }
y~ Storage Properties i Surface Area [square metres} 7539.0 }
Surface Area (square metres) 1700.0 Extended Detention Depth (metres) 0.50
Extended Detention Depth {metres} 0.40 y Permanent Pool Volume (cubic metres) 721.0 }
Permanent Pool Volume (cubic metres} 2100.0 pees (Feorliee Genie
" Vegetation Cover (% of surfac 10.0
efi honk se sas Exfiltration Rate (mm/hr) 0.00
iltrati te |. a
aia ‘en eae) Evaporative Loss as % of PET 100.00
Evaporative Loss as % of PET 125.00 2
Saat Frssa 4 -~ Outlet Properties !
u . aoe es . Equivalent Pipe Diameter (mm) 52 !
Equivalent Pipe Diameter (mm) 41 Overflow Weir Width {met 50
Overflow Weir Width (metres) 4.0 Nt i “ . ‘ ae re) 23
Notional Detention Time (hrs) 76.3 Chee Eee elie) ;
— ete
{-] Use Custom Outflow and Storage Relationship [) Use Custom Qutflow and Storage Relationship
| | Define Cusiom Outfiow and Storage Not Defined | aa Define Custom Outflow and Storage Not Defined
| Re-use... | Fluxes... | Notes... | More a | Re-use... | Fluxes... | Notes... | More i
[| Xcancet |f <Back || A Einish | | % cancel || <P Back || WS irish

 

 

 

 

 

 

Page 23

MUSIC Model: Mitigated




MUSIC Results
Date: 19/12/2014
By: IP

Description                                                               Pollutant Load (kg/year)
                                                               TSS          TP              TN          GP
Developed Site Only (Without Mitigation)                      17600        52.7             370         3170
WQOs (Percentage Reduction)                                   80%          60%              45%         90%
Load Reduction Target                                         14080        31.62           166.5        2853
Developed Site plus External Catchment (Without Mitigation)   24400        65.5             426         3430
Developed Site plus External Catchment (With Mitigation)      10300        32.7             255          0
Load Retention Achieved                                       14100        32.8             171         3430
Load Retention Achieved as % of Developed Site Load           80.1%        62%             46.2%        108%
Water Quality Objective Achieved (SPP 4/10)                    YES          YES             YES         YES




Site Only no mitigation                                       Source      Residual       Reduction
Flow (ML/yr)                                                     144.00       144.00                0
Peak Flow (m3/s)                                                   0.88         5.86           -570.4
Total Suspended Solids (kg/yr)                                 17600.00     17600.00                0
Total Phosphorus (kg/yr)                                          52.70        52.70                0
Total Nitrogen (kg/yr)                                           370.00       370.00                0
Gross Pollutants (kg/yr)                                        3170.00      3170.00                0

Site + External Catchment+mitigations                         Source      Residual       Reduction
Flow (ML/yr)                                                     172.00       165.00            3.90
Peak Flow (m3/s)                                                   0.88         5.73         -555.40
Total Suspended Solids (kg/yr)                                 24400.00     10300.00           57.70
Total Phosphorus (kg/yr)                                          65.50        32.70           50.00
Total Nitrogen (kg/yr)                                           426.00       255.00           40.20
Gross Pollutants (kg/yr)                                        3430.00         0.00          100.00

Page 24

                                           CALIBRE CONSULTING




APPENDIX C STORMWATER MANAGEMENT PLAN DRAWINGS


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CALIBRE CONSULTING

APPENDIX C STORMWATER MANAGEMENT PLAN DRAWINGS

Page 25

 

LOT 1
RP165418

 

AQ}

 

NORTHERN BASIN

CENTRAL BASIN

4m BUFFER

 

 

PIPE FLOW FROM SOUTHERN BASIN
TO REPLENISH CENTRAL BASIN

 

 

 

 

 

 

 

 

 

SOUTHERN BASIN

 

 

 

 

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%
%
>
%,
©
2.5m BUFFER
LEGEND:
——_— = = MUSIC CATCHMENT BOUNDARY BIORETENTION FILTER AREA
NOTES: PROPERTY BOUNDARY OPEN WATER
1. LAYOUT OF THE PRELIMINARY STORMWATER QUALITY
—----- DEVELOPED CONTOUR
IMPROVEMENT DEVICES IS CONCEPTUAL ONLY AND PROVIDED AS BASIN saib CATCHMENT MACROPHYTE PLANTING ZONE
A GUIDE FOR THE TREATMENT TRAIN AND IS SUBJECT TO NORTHERN BIORETENTION BASIN | A1, A2, EXT A
DETAILED DESIGN. ae ct ee ee OVERLAND FLOW PATH NEIGHBOURING PROPERTY
CENTRAL eee B1, B2, EXT B
2. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH CALIBRE
—3 -4+ -4-4- POND WATER DIVERSION SYSTEM PROPOSED AGE CARE FACILITY
CONSULTING REPORT NO. B14158.W-01A. BIORETENTION BASIN & CONCEPT PLAN ONLY
SOUTHERN WATER QUALITY C1, C2, C3, Ch, EXT C NOT TO BE USED FOR
3. SWALE AND PIPE DETAILS INCLUDING PIPE SIZES AND INVERT CONTROL POND (WQCP) CONSTRUCTION PURPOSES MAJOR FLOW DIRECTION CATCHMENT LABEL
LEVELS ON THIS DRAWING IS CONCEPTUAL ONLY AND SUBJECT
TO DETAILED DESIGN. sw———— PROPOSED STORMWATER DRAINAGE
FILE: B14158.W-SKOS.dwq DATE: 19-12-2014 TIME: 14:59
refs X_BIsIS8.W BASE X_BIN5E.W_TITLE USR: Jake Wilkinson
Faat [ones [onal] —ONTE Tcalaw cmon SORE METRES T TAGROFIEN No. a DRAWING THLE
AMENDMENT DETAILS SURVEYOR: KEN HICKS & ASSOCIATES
oe LE 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT CONSULT AUSTIALA PALM LAKES
ao 11250 25 0 25 so Al Ph (07) 5443 2844 Fax (07) 5443 7146 or vp STORMWATER QUALITY
x 1:2500 AR Oo
B{c PROJECT No. "APPROVED. a . CONCEPT
i mm one Bates W emia 8 Gh] PALM LAKES - COOROY Calor — SERRE eres ant hae GONGEPT LAYOUT PLAN
NIE D Ie (07 3895 3444 Focsimile 07 3895 3400
SIF FOR_& ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD RETIREMENT COMMUNITY CONSULTING eae nec tee oases ‘Dae B14158.W-SK05

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 26

 

2

  
   

 

 

TOP OF EMBANKMENT
MIN 1 in 3 BATTERS

 

 

SH
OS
MAnwe
YS \NZE
WE] =
CH | RL 101.3
\ |
\
\ |
\ | __ —_— — —— WHERE REQUIRED
BIORETENTION FILTER
LEVEL = RL 99.1
. FILTER MEDIA AREA
\ \ MIN 450m?
XS
LEGEND:
PROPERTY BOUNDARY

PROPOSED DESIGN CONTOURS

  
 
  
  
 

 

\ LX
1 in 6 FOR

MAINTENANCE ACCESS

|
co

 

EXISTING CONTOURS

PROPSOED STORMWATER DRAINAGE

 

‘Swo-

 

Swo-

 

BIORETENTION FILTER

a
A ROCK ARMOURING

  

 

LOCATION OF
OVERFLOW WEIR

   
 

 

 

 

 

 

 

  
 

INDICATIVE LOCATION ONLY
AQ WILL BE SPECIFIED DURNING

 

 

 

 

  

 

 

 

 

 

 

  

 

 

   

 

 

 

i ‘\
| 4 y / Ss
; y D ~~ DETAILED DESIGN
Z
Soy ae 7
, =x x NOON D d OX < OX SS OQ a »
y i; | WW Ar OK By Wi PR Ny 2. EXK ON LA. ® dX <p 3s D D> ©d “ON
Y Sl UB Be GIG DIOS ODD. GN ON a “Dr CON ON Or DDO. GX OO
| the NON YON XN ‘ SS \, YS
° gun \ \ SON ~~ yo SN :
~7 ~~ SSS FOO NL __ =f i |
| [TENNIS COURT
NOTES:
1. LAYOUT OF THE PRELIMINARY STORMWATER
QUALITY IMPROVEMENT DEVICES IS CONCEPTUAL
ONLY AND PROVIDED AS A GUIDE FOR THE

TREATMENT TRAIN AND IS SUBJECT TO
DETAILED DESIGN.

2. THIS DRAWING IS TO BE READ in
CONJUNCTION WITH CALIBRE CONSULTING

REPORT No. B14158.W-01A.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

‘ oO
| \ \ L
\ NS / !
NOT FOR CONCEPT PLAN ONLY
NOT TO BE USED FOR
CONSTRUCTION CONSTRUCTION PURPOSES
FILE: B14158.W-SK06.dwg DATE: 19-12-2014 TIME: 15:30
refs: XBWISEW TITLE X_BWIS.W BASE USR ake Wikinson
Fast [once [ou] OnE scsun Omen SCALE METRES TACROFIIW Wo CUNT DaRWNE TIE
AMENDMENT DETAILS SURVEYOR: KEN HICKS & ASSOCIATES
mei P {Tif pa 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT PALM LAKES
t 10020200 22 6 6 8 7m Ph (07) 5443 2844 Fax (07) 5443 7146 <r ons NORTHERN BIORETENTION BASIN
N 1.400 AB |
sic PROJECT No. "APPROVED.
i mm praise W ORHArRt ER = PALM LAKES - COOROY Callore SSE ee Shame =
NIE D Ie 07.3895 3444 Focal 07 3895 3400
SIF FOR_& ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD RETIREMENT COMMUNITY CONSULTING ie Weboarm Epdnay ingspom Semcre Cont oa B14158.W-SK06

 

 

 

 

 

Page 27

 

 
 

 

 

 

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Cif ILL | ty
LI LL T,;

   

  
 
 

 

 

 

 

 

 

QVoesind ACCESS

LOCATION

 

 

 

OVERFLOW WEIR

  
   
 

 

OUTLET LOCATION

NOTES:
1. LAYOUT

QUALITY IMPROVEMENT DEVICES IS CONCEPTUAL
ONLY AND PROVIDED AS A GUIDE FOR THE
TREATMENT TRAIN AND IS SUBJECT TO
DETAILED DESIGN.

2. THIS DRAWING IS TO BE READ IN
CONJUNCTION WITH CALIBRE CONSULTING
REPORT No. B14158.W-01A.

oy
| !
_
be
x / /
iI ' y\a/ MINOR STORMWATER INFLOW
boy Lis
ll | 7
| \\
iif si POSSIBLE ACCESS N
WF LOCATION |
INDICATIVE LOCATION ONLY
WILL BE SPECIFIED DURNING
DETAILED DESIGN \
oa ee ==S1/ } \
2 Uc ao ae - vf /
2 4 - J /
2 co “yy a 4
2 a “ 27 -
2 a a ee ye 4 LEGEND:
~ se ~ ~ > i
SIN Pn | Bye 33 rN \ PROPERTY BOUNDARY
~ . yy i
uN \ \ \
~ ~ ~ \
~ ~ oN. ~ ~ \ i] \ TB fede oS OB NN PROPOSED DESIGN CONTOURS
~ YT ~ 7 SN / \
/ \ TOP OF EMBANKMENT EXISTING CONTOURS
J ‘ RL 101.0
! (hy \ PROPOSED STORMWATER
| STEEP BATTERS OR ~\' “ we DRAINAGE
RETAINING WALL
yy | \ 4000000000000000000000000- RETAINING WALL INDICATIVE
| {I | | \
I, i \ a PROPOSED SAFETY FENCE
! | \
il ' \ pie ae MACROPHYTE PLANTING ZONE
STORMWATER il | \
INFLOW (I \ OPEN WATER SURFACE] >< OPEN WATER
nl | LEVEL = RL 99.2 \
2
LALA ROCK ARMOURING
8) @) GROSS POLLUTANT TRAP (GPT)

OF THE PRELIMINARY STORMWATER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YW
W
> YL
N Uy
Z
Ny YW | NOT FOR CONCEPT PLAN ONLY
L\4.4 | NOT TO BE USED FOR
CONSTRUCTION CONSTRUCTION PURPOSES
LE; BU1S8.W-SKO7.dwg_ DATE: 19-12-2014 TIME: 1509
ref's: X_BIs158.W_TITLE X_B14I58.W_BASE USR: Joke Wikinson
FRAT [Alcs [oRAWn] DATE pzsian cncox! ‘SCALE (METRES) WICROFILN No. CLIENT ‘DRAWING TITLE
‘AMENDMENT DETAILS: SURVEYOR: KEN HICKS & ASSOCIATES
mye LW | pa 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT CONSULT AUSTRALA PALM LAKES
“ 4200 2 0 2) 4 6 8 Ph (07) 5443 2844 Fax (07) 5443 7146 SRST CENTRAL POND
N 124600 AB H
BC DRAWN CHECK PROJECT No. ‘APPROVED ANDREW McPHAIL RPEQ 6921 Calibre Consulting (QLD} Pry Lid
ig Bits. W ac mri oo PALM LAKES - COOROY Callore Sree on Sel ams
sir FOR &_ON_ BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD RETIREMENT COMMUNITY CONSULTING ties ctor tern iy arin omascneTth B14158.W-SK07

 

 

 

 

Page 28

 

OUTLET LOCATION

 
 
 
 
 
 
  
 
  
 
   
   
 

, “LOCATION OF
BX OVERFLOW WEIR

POSSIBLE ACCESS
1 IN 6 BATTERS

>

 

  

 

\ = 4
TOP OF EMBANKMENT

 

BIORETENTION BASIN

LEVEL = RL 101.7
FILTER MEDIA AREA} w

 

 

   
  
  
 

  

 

  
  
  

RL 103.0
1 Lgl
Aft yay

OPEN WATER SURFACE
y |_LEVEL = RL 101.0 '

 

 

 

7% PROPOSED RETAI

A

iS
hows
LE SMW

 

 

 

  
 

 

MIN. 450m?
v

Vv v Vv

NING WALL - - ~

A

INDICATIVE STORMWATER INFLOW
LOCATION FROM AGED CARE FACILITY.
NOTE THAT DRAINAGE IS TO BE
DESIGNED FOR MAJOR FLOWS

(100 YEAR ARI).

  
  
    
          
  
  

TOP OF EMBANKMENT
RL 103.0

STORMWATER INFLOW
FROM DEVELOPMENT

 

 

 

 

LEGEND:
PROPERTY BOUNDARY
TTT TT PROPOSED DESIGN CONTOURS
EXISTING CONTOURS
‘SWD- ‘SWD- PROPSED STORMWATER DRAINAGE
+©00000000000000000000000- RETAINING WALL INDICATIVE

PROPOSED SAFETY FENCE

MACROPHYTE PLANTING ZONE

OPEN WATER

BIORETENTION FILTER

 

 

ROCK ARMOURING

 

 

 

FLOW ARROW

 
   
 
 
  
  

NOTES:

1. LAYOUT OF THE PRELIMINARY STORMWATER
QUALITY IMPROVEMENT DEVICES IS CONCEPTUAL
ONLY AND PROVIDED AS A GUIDE FOR THE
TREATMENT TRAIN AND IS SUBJECT TO
DETAILED DESIGN.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LID 2. THIS DRAWING IS TO BE READ IN
PROPOSED Si Lui IN fp | CONJUNCTION WITH CALIBRE CONSULTING
VoL;
CLUBHOUSE SLi MAY REPORT NO. B14158.W-01A.
Ty
Li Mii Uy
LLM iil La
KL Wii - NOT FOR CONCEPT PLAN ONLY
KUL 4 NOT TO BE USED FOR
CONSTRUCTION CONSTRUCTION PURPOSES
FILE: B14158.W-SKO8.dwq DATE: 19-12-2014 TIME: 15:31
refs: BWISEW TITLE X_BWIS.W BASE USR. ake Wiknson
Tar [Alcs [oun] One Tcaun Omen SORE T METRES TICROFIN We SOENT wn DaRWNG TIT
AMENDMENT DETAIL SURVEYOR: KEN HICKS & ASSOCIATES
mee [wf ik 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT C consutT AUSTIALA PALM LAKES
4 a Ph (07) 5443 2844 Fax (07) 5443 7146 mee wD SOUTHERN BIORETENTION
pic PROJECT No. ‘APPROVED H o . BA: IN AND Pp NI
AE mmm ox Bdi58 W wait 2] PALM LAKES - COOROY calibre CaCO yee OND
NIE D Ie 07 3895 3444 Facsimile 07 3895 3400 mi
Sir FOR & ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD RETIREMENT COMMUNITY CONSULTING e Vitor Sr Spon Donic B14158.W-SK08

 

 

Page 29

 

TOP OF BANK END OF CLEAN OUT 1/0 TO EXTEND 100mm
RL_101.3m ABOVE BIORETENTION FILTER SURFACE.
SCREW CAP TO BE FIXED USING 3 SCREWS.

—
3

BIDIM A12 OR APPROVED
EQUIVALENT TO EXTENTS

300mm

PONDING DEPTH
\

RL_99.40m ee 1
‘ 3

(( RL _99.10m = 2S 2
BE 99.10m

 

 

 

 

o

[
Oe | |

[| —~ rerer TO TYPICAL

 

 

| BIORETENTION SECTION.

 

 

 

 

 

 

 

 

 

 

CLEANOUT 100 uPVC
PIPE (NOT SLOTTED)

END CAP

TEMPORARY STORAGE
WSL _99.60m

0.40m

2.20m

DEEP ZONE
RL_97.00m
fe 2h 00m

SWIMMING POOL AREA

 

 

 

C) | ee

 

SMOOTH WALLED SLOTTED
uPVC SUBSOIL DRAINAGE PIPES

 

 

 

OUTLET PIPE
TYPICAL BIORETENTION SECTION
SCALE 1:20
SCALE 1:40

600

 

PLANTING TO LANDSCAPE ARCHITECT
SPECIFICATIONS (GENERALLY IN
ACCORDANCE WITH BIORETENTION
TECHNICAL DESIGN GUIDELINES)

WAR WY 7 Al2 OR EQUIVALENT TO EXTENTS
Yi Y
4 FILTER MEDIA SANDY LOAM

| 0.45mm PARTICLE SIZE
200mm/hr SATURATED HYDRAULIC CONDUCTIVITY
|

 

100

2.50m

 

200

  

!

1
°-=]—— TRANSITION LAYER COARSE SAND
1.00mm PARTICLE SIZE

GRAVEL DRAINAGE LAYER
5-7mm AGGREGATE (NO FINES)

TYPICAL BIORETENTION DETAIL
SCALE 1:20
SCALE 1:40

 

ACCESS TRACK

 

 

POTENTIAL ACCESS TO BASIN TOP OF BANK
VIA 1 in 6 BATTER SLOPE RL_101.00m
BE 101.00 __
1
6

 

 

 

1.50m

WIDTH

 

 

 

 

PROPOSED A

RETAINING WALL

LE: Bt41S8.W-SKO.dwq_ DATE: 19-12-2014 TIME: 15:13

ACCESS TRACK

BASIN DESIGN SURFACE

OF MACROPHYTE PLANTING AREA VARIES 10.80m

SECTION (A
SCALE (Atl: 50 \gKoy/

SCALE (A3):1:100
CENTRAL BASIN

 

1.50m

 

 

ACCESS TRACK

 

 

TEMPORARY STORAGE
WSL_99.60m 1
gWSL_99.60m

   

2 BASIN DESIGN SURFACE
DEEP ZONE

RL _97.00m
pe 2h oom

SECTION (8)
SCALE (At: 150 \gKoy/

SCALE (A3):1:100
CENTRAL BASIN

NOTES:

1. LAYOUT OF THE PRELIMINARY STORMWATER
QUALITY IMPROVEMENT DEVICES IS CONCEPTUAL
ONLY AND PROVIDED AS A GUIDE FOR THE
TREATMENT TRAIN AND IS SUBJECT TO DETAILED
DESIGN.

2. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH CALIBRE CONSULTING REPORT No. B14158.W-01A.

 

CONCEPT PLAN ONLY
NOT TO BE USED FOR
CONSTRUCTION PURPOSES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

refs: X_BI4I58.W_TITLE USR: Jake Wilkinson

Faat [ales [oust] —ONTE Tolan once SCALE METRES TIGROFIEN Wo. SUNT a DRAWING THLE
AMENDMENT DETAILS SURVEYOR: KEN HICKS & ASSOCIATES

mee | eae 20 02002 04 06 08 1 At 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT CONSULT AUSTIALA PALM LAKES

ie OC ———— Ph (07) 5443 2844 Fax (07) 5443 7146 OEE SOUTHERN BIORETENTION

Ri a 7

pic PROJECT No. ‘APPROVED i ‘ BASIN AND Pp NI

tf mums) so os | “esAaMt eS @| PALM LAKES - COOROY calibre Caney Ee Lamm maer OND

Sir FOR & ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD RETIREMENT COMMUNITY CONSULTING Ste Cate Ueto Sey Sepyon Dict ‘TbsQBt B14158.W-SKO9

 

Page 30

 

2.50m
ACCESS TRACK

 

TOP OF BANK
RL_103.00m

   

6.26m

MACROPHYTE PLANTING AREA

MACROPHYTE PLANTS.

TEMPORARY STORAGE
WSL _101.50m

== —s
STANDING WSL 101.00m 5
oT ds

 

 

 

 

WIDTH VARIES

o
real
wn
a
>
2
e
Zz
Ss
oC
z
2g
=
oO
ira
a

___TOP OF BANK @ __ __ __ __ a oe __ __ __
RL_103.00m |
|
DEEP ZONE WIDTH VARIES BASIN DESIGN SURFACE |
me |
2 DEEP ZONE RL_99.00m |
DEEP ZONE RL_99.00m_
1
|
3.43m |
I
|
\
SECTION (C\
SCALE (Atl 50 \gKag/
SCALE (A3):1:100
SOUTHERN BASIN
1.50m BIORETENTION BASIN 2.50m

 

ACCESS TRACK

 

 

 

 

 

 

REFER TO TYPICAL SECTION AND DETAIL ON DRG No. B14158-SK09

PONDING LEVEL

 

 

1 in 6 BATTERS TO PROVIDE

 

TOP OF BANK
RL_103.00m
es 00m _

 

ACCESS TRACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOP OF BANK RL 101.70 ACCESS TO BASIN
RL_102.20m
=]
| reypoRARY STORAGE - 1
| wst 101.50m v4 yARY eVARVY a ——— RL_101.40m 6
uo oT 77 77 77 77 77 TO — 1 ~
3 | STANDING WSL 101.000 ee & APPROX.
“|
|
g
=I
2
S| <n FILTER MEDIA FOR DETAILS
Z| DEEP ZONE RL 99.00n REFER TO DRG No. B14158.W-SKO9
Sl
ay
|
SON Ge
| SCALE (A3):1:100 ?
SOUTHERN BASIN
NOTES:
1. LAYOUT OF THE PRELIMINARY STORMWATER
QUALITY IMPROVEMENT DEVICES IS CONCEPTUAL
ONLY AND PROVIDED AS A GUIDE FOR THE
TREATMENT TRAIN AND IS SUBJECT TO DETAILED
DESIGN.
2. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH CALIBRE CONSULTING REPORT NO. 814158.W-O1A.
CONCEPT PLAN ONLY
NOT TO BE USED FOR
CONSTRUCTION PURPOSES
brats X BWEEW TILE USE. Toke wnson
rar [oss [aaa] On eee aE TEST TSROF To saa TERRE TE
iconGr DETAILS SURVEYOR: KEN HICKS & ASSOCIATES
mel P [wf pa 49 THE ESPLANADE MAROOCHYDORE PALM LAKES RESORT CCOMSURT AUSTRALIA PALM LAKES

 

 

O4zmE0zm=E>
me] ole] >

 

150

1

05

 

 

100
DRAWN CHECK

 

 

 

 

 

 

 

 

 

 

M
A3

 

Ph (07) 5443 2844 Fax (07) 5443 7146

PROJECT No. "APPROVED,

B14158.W

ANDREW McPHAIL RPEQ 6921
MATTHEW HILL RPEQ 11578

 

FOR & ON BEHALF OF CALIBRE CONSULTING (QLD) PTY LTD

 

PROWECT

PALM LAKES - COOROY
RETIREMENT COMMUNITY

 

Cc

caliore

CONSULTING

SOUTHERN BIORETENTION

Calibre Consulting (QLD) Pty Li |
Level, 199 Gey Se, Sou Biche GUD acca 4101

‘Woghona 07 3895 3444 Foainile 072895 3400 Soman
(Bdabene Canberra Usboorm Syinay Singopom BamiireComt = Lic 4064

 

BASIN AND POND

 

‘DRAWING NUMBER

B14158.W-SK10

 

TSSUF

 

 

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