OPW 15-0099 RFI Response combined scan

Page 2

2o0f2

 

b) The dimensions of the temporary diversion channels are tabled on Calibre drawing 15-001261-113 with the
existing gully (traversing stage 2) being protected from sediment by diversion drains, sediment fences and
existing vegetation retained until the last phase of the bulk earthworks operation.

c) Diversion drain lining has been detailed on Calibre drawing 15-001261-113, with geofabric pinned to the invert

and batters of the diversion drains.

d) Condition 68 of the higher order approval states:

The development must not adversely impact on the existing drainage conditions on other properties
including not depriving dams on other properties of their natural stormwater runoff.

The temporary drainage designs, and in particular the temporary sediment basins, will not adversely impact the
supply of water to downstream dams. In accordance with the Sunshine Coast Regional Council Manual for
erosion and Sediment Control Version 1.2, the basins will be flocculated with the clean water discharged

downstream at the legal point of discharge.

e) Calculations for each of the 5 basins sizing has been attached. The design sizing has been undertaken in
accordance with IECA guidelines (2008) to achieve the requirements of the State Planning Policy Appendix 3,

Table A.

We trust that this information request response is satisfactory to enable Noosa Council to issue an operational works
approval. If you have any further queries please contact the undersigned.

Yours faithfully
Calibre Consulting

TAT ee

Robert Blake
Principal Engineer

ATTACHMENTS

1. Attachment 1 Amended Erosion and sediment control drawings:

a. 15-001261-110 Issue A
b. 15-001261-111 Issue A
c. 15-001261-112 Issue A
d.  15-001261-113 Issue A
e. 15-001261-114 Issue A
2. Attachment 2 Sediment Basins sizing calculations (5 pages)

COPIES
1. Copied to: Palm Lake P/L (Noel O'Brien)

Wat

Andrew McPhail
Principal Engineer
RPEQ. # 6921

Page 3

Calibre Consulting (Qld) Pty Ltd
Ground Floor, 545 Queen Street
Brisbane QLD 4000

PO Box 10349 Adelaide Street
Brisbane QLD 4000

T (07) 3895 3444

ABN 38 169 428 506

Project:

Sediment Basin Sizing

Palm Lakes Resort, Cooroy

C=

calibre

CONSULTING

 

Designed: |AY

 

 

Date: 28.07.15

 

 

The sediment basin volume has been obtained by calculating the ‘settling volume’ and 'sediment
storage volume’. In accordance with the IECA Guidelines (2008), the settling volume has been

calculated using the following formulas.

Basin Type: D

The settling volume (m*) = Vs = 10*Riyx, s-aay)"Cv"A

Where: R=

Y%, 5-day rainfall depth (mm) (Table B5 of Guidelines)

Cv= Volumetric run-off co-efficient (Table B7 of Guidelines)

A=

Catchment area draining to basin (Ha)

NB (The volumetric run-off coefficient has been determined based on a Group D Clay soil type as a worst case scenario)
The sediment storage volume for Type D basins are calculated using Table B8 of the Guidelines

The storage volume (m*) = 50% of the settling volume

Table 1: Sediment basin catchment details

 

 

 

 

 

 

 

 

 

Sediment | Frys, saay)
Basin "any Cv Total Area (Ha)
1 43.10 0.63 2.34
Table 2: Sediment Basin Volumes
Sediment
Sediment Settling Storage | Total Volume
Basin | Volume (m*)| Volume (m’)
(m’)
1 635 318 953

 

 

The emergency spillway has been designed to cater for a design storm ARI based on table B12 of
the Guidelines. The spillway length and depth has been designed based on the formula Q=

1.5LH‘1.5 where;

Table 3: Sediment Basin Emergency Spliiiway Design

 

 

 

 

 

 

 

 

 

 

Sediment 7 Time of Coeftieint of
Basin | Design ARI Q(m*/s) | concentration eer Runoff
Spillway (years) (min) omy (impervious)
1 20 1.14 10.00 190 0.92
Weir Length: 8.5m
Depth of water over welr: 0.199 m
Freeboard over water level to Crest: 0.30 m

Page 4

Calibre Consulting (Qld) Pty Ltd
Ground Floor, 545 Queen Street
Brisbane QLD 4000

 

 

PO Box 10349 Adelaide Street =
Brisbane QLD 4000 Calibre
T (07) 3895 9444 CONSULTING
ABN 38 109 428 506
Project: Palm Lakes Resort, Cooroy Designed: |AY
Date: 28.07.15

Sediment Basin Sizing

The sediment basin volume has been obtained by calculating the ‘settling volume’ and ‘sediment
storage volume’. In accordance with the IECA Guidelines (2008), the settling volume has been
calculated using the following formulas.

Basin Type: D
The settling volume (m*) = Vs = 10*Ryyx, sasy)"CV*A
Where: R= Y%, 5-day rainfall depth (mm) (Table B5 of Guidelines)
Cv= Volumetric run-off co-efficient (Table B7 of Guidelines)
A= Catchment area draining to basin (Ha)

NB (The volumetric run-off coefficient has been determined based on a Group D Clay soil type as a worst case scenario)
The sediment storage volume for Type D basins are calculated using Table B8 of the Guidelines

The storage volume (m*) = 50% of the settling volume

Table 1: Sediment basin catchment detalls

 

 

Sediment | Riya, s-dey
Basin (mm) Cv Total Area (Ha)
2 43.10 0.63 2.29

 

Table 2: Sediment Basin Volumes

 

 

Sediment
Sediment Settling Storage | Total Volume
Basin | Volume (m*)| Volume (m’)
(m’)
2 622 311 933

 

 

 

 

 

 

The emergency spillway has been designed to cater for a design storm ARI based on table B12 of
the Guidelines. The spillway length and depth has been designed based on the formula Q=
1.5LH"1.5 where;

Table 3: Sediment Basin Emergency Spillway Design

 

 

 

 

 

 

 

 

 

 

Sediment Time of Coeffieint of
Basin ne Q(m’/s) | concentration fens Runoff
Spillway y (min) (impervious)
2 20 1.11 10.00 190 0.92
Welr Length: 8.5 m
Depth of water over weir: 0.197 m

Freeboard over water level to Crest: 0.30 m

 

 

 

Page 5

Calibre Consulting (Qid) Pty Ltd
Ground Floor, 545 Queen Street
Brisbane QLD 4000

C#

 

 

 

 

 

PO Box 10349 Adelaide Street a
Brisbane QLD 4000 Calibre
T (07) 3895 3444 CONSULTING
ABN 38 109 428 506
Project: Palm Lakes Resort, Cooroy Designed: [AY
Date: 28.07.15
Sediment Basin Sizing

The sediment basin volume has been obtained by calculating the ‘settling volume’ and ‘sediment
storage volume’. In accordance with the IECA Guidelines (2008), the settling volume has been
calculated using the following formulas.

Basin Type: D
The settling volume (m*) = Vs = 10*Riya, sday)"Cv"A
Where: R= Y%, 5-day rainfall depth (mm) (Table B5 of Guidelines)
Cv= Volumetric run-off co-efficient (Table B7 of Guidelines)
A= Catchment area draining to basin (Ha)
NB (The volumetric run-off coefficient has been determined based on a Group D Clay soil type as a worst case scenario)
The sediment storage volume for Type D basins are calculated using Table B8 of the Guidelines

The storage volume (m°) = 50% of the settling volume

 

 

 

 

 

Table 1: Sediment basin catchment details
Sediment | Risse | cy — | Total Area (Ha)
Basin (mm)
3 43.10 0.63 2.51
Table 2: Sediment Basin Volumes
Sediment
Sediment Settling Storage | Total Volume
Basin | Volume (m*)| Volume (m’)
(m*)
3 682 341 1022

 

 

 

 

 

 

The emergency spillway has been designed to cater for a design storm ARI based on table B12 of
the Guidelines. The spillway length and depth has been designed based on the formula Q=
1.5LH‘1.5 where;

Table 3: Sediment Basin Emergency Spltiway Design

 

 

 

 

 

 

 

 

 

 

Sediment Time of Coeftieint of
Basin | Design ARI ., (m’/s) | concentration ey Runoff
Splilway | 2S) (min) (mm/hr) | ampervious
3 20 1.22 10.00 190 0.92

Weir Length: 9m
Depth of water over weir: 0.201 m
Freeboard over water level to Crest: 0.30 m

Page 6

Calibre Consulting (Qld) Pty Ltd
Ground Floor, 545 Queen Street
Brisbane QLD 4000

PO Box 10349 Adelaide Street
Brisbane QLD 4000

T (07) 3895 3444

ABN 38 109 428 506

Project:

Sediment Basin Sizing

Paim Lakes Resort, Cooroy

C=
calibre

CONSULTING

 

Designed: |AY

 

Date: 28.07.15

 

 

 

The sediment basin volume has been obtained by calculating the ‘settling volume’ and ‘sediment
storage volume’. In accordance with the IECA Guidelines (2008), the settling volume has been

calculated using the following formulas.

Basin Type: D

The settling volume (m*) = Vs = 10*Royx, sday)*Cv"A

Where: R=

Y%, 5-day rainfall depth (mm) (Table B5 of Guidelines)

Cv= Volumetric run-off co-efficient (Table B7 of Guidelines)

A= Catchment area draining to basin (Ha)
NB (The volumetric run-off coefficient has been determined based on a Group D Clay soil type as a worst case scenario)
The sediment storage volume for Type D basins are calculated using Table B8 of the Guidelines

The storage volume (m°) = 50% of the settling volume

‘Table 1: Sediment basin catchment details

 

 

 

 

 

 

 

 

 

Sediment | Ryys,saay) cv Total (Ha)
Basin (mm)
4 43.10 0.63 3.22
Table 2: Sediment Basin Volumes
Sediment
Sediment Settling Storage | Total Volume
Basin | Volume (m*)/ Volume (m’)
(m*)
4 874 437 1311

 

 

The emergency spillway has been designed to cater for a design storm ARI based on table B12 of
the Guidelines. The spillway length and depth has been designed based on the formula Q=

1.5LH*1.5 where;

Table 3: Sediment Basin Emergency Spiliway Design

 

 

 

 

 

 

 

 

 

 

Sediment Time of Coeffielnt of
Basin | Design ARI Q(m*vs) | concentration viene Runoff
| spiliway | 8rs) (min) (mm/ht) | impervious)
4 20 1.56 10.00 190 0.92
Welr Length: 12m

Depth of water over welr: 0.196 m
Freeboard over waiter level to Crest: 0.30 m

Page 7

Calibre Consulting (Qld) Pty Lid
Ground Floor, 545 Queen Street
Brisbane QLD 4000 :

 

 

 

 

PO Box 10349 Adelaide Street =
Brisbane QLD 4000 calibre
T (07) 8895 3444 CONSULTING
ABN 38 109 428 506
Project: Palm Lakes Resort, Cooroy Designed: |AY
Date: 28.07.15
Sediment Basin Sizing

The sediment basin volume has been obtained by calculating the ‘settling volume’ and ‘sediment
storage volume’. In accordance with the IECA Guidelines (2008), the settling volume has been
calculated using the following formulas.

Basin Type: D
The settling volume (m*) = Vs = 10*Revx, sday;"CV*A
Where: R= Y%, 5-day rainfall depth (mm) (Table B5 of Guidelines)
Cv= Volumetric run-off co-efficient (Table B7 of Guidelines)
A= Catchment area draining to basin (Ha)
NB (The volumetric run-off coefficient has been determined based on a Group D Clay soil type as a worst case scenario}

The sediment storage volume for Type D basins are calculated using Table B8 of the Guidelines

The storage volume (m*) = 50% of the settling volume

Table 1: Sediment basin catchment detalls

 

 

Sediment Ry, S-day)
Basin (mm) Cv Total Area (Ha)
5 43.10 0.63 25

 

Table 2: Sediment Basin Volumes

 

 

Sediment
Sediment Settling Storage | Total Volume
Basin | Volume (m*)| Volume (m’)
(m’)
5 679 339 1018

 

 

 

 

 

 

The emergency spillway has been designed to cater for a design storm ARI based on table B12 of
the Guidelines. The spillway length and depth has been designed based on the formula Q=
1,5LH‘1.5 where;

Table 3: Sediment Basin Emergency Spillway Design

 

 

 

 

 

 

 

 

 

 

Sediment ‘ Time of , Coeftfieint of
Basin ae Q(m’/s) | concentration Ta Runoff
Spillway yt (min) (impervious)
5 20 1.21 10.00 190 0.92
Weir Length: 9.5m
Depth of water over weir: 0.194 m

Freeboard over water level to Crest: 0.30 m

 

Page 8

 

 
 
 
   
  
  
 
  
 
 
 
 
  
 
 
 

 

 

@® PROVIDE ‘SPILL THROUGH WEIR’ IN SEDIMENT
FENCE. ‘SPILL THROUGH WEIR’ TO BE GENERALLY

TEMPORARY SEDIMENT BASIN 1 -
BASE AREA - TO SUIT ULTIMATE

 

IN ACCORDANCE WITH SILT FENCE DETAIL WITH cECNRANTS FENCE IAONG ERETING RITNVERT OF BAS <i55.0
GEOTEXTILE FABRIC TO BE WRAPPED AROUND BL ATOR DE: BATTER CIELO) BATE
STAR PICKET PLACED HORIZONTALLY APPROX. DOWNSTREAM BOUNDARIES PRIOR ~ Wi

TO ANY CONSTRUCTION. RL OF SPILLWAY - 100.5

 

400mm ABOVE FINISHED SURFACE. RL WATER SETTLING LEVEL - 100.5

RL SEDIMENT STORAGE DEPTH - 99.5

 

 

 

 

     
 

 

  

 

 

 

 

 

 

    
         
    
 
 
 
 
 
 
 
  

 

 

NOTE: “Li . WIDTH OF SPILLWAY WEIR - 8.5m
BASIN LEVELS ARE A GUIDE ONLY AND ARE Y Pease R MINIMUM SETTLING VOLUME = 635m?
TO BE CONFIRMED ON SITE TO SUIT BEST ff, / TEMPORARY MASS MINIMUM STORAGE VOLUME = 318m?
WITH NATURAL TERRAIN. CONTRACTOR TO A DIMENT BASIN 1 VARRSSY MINIMUM TOTAL VOLUME = 953m?
ENSURE MINIMUM VOLUMES ARE ACHIEVED. A } iD LVF TOTAL VOLUME ACHIEVED = 1385m?
feeS | Oech nena 1
ZA re a ; , STORMWATER BASIN TO BE UTILISED AS (
“A TEMPORARY SEDIMENT BASIN DURING \ .
Axe ‘~ = <G\STHE CONSTRUCTION PHASE. ENSURE A TEMPORARY SEDIMENT BASWDURNG.
< Sc = MINIMUM VOLUM I:
SJ NSS RE? een. “THE CONSTRUCTION PHASE. ENSURE
oA DLS OER LAK SBS AZ WINIMUM VOLUMES ARE ACHIEVED.
= - ; j
eT 5 S19 STERN T SSS -
= KNISE DS ORS
Ef Th -— 5. 141 \ MK BEX TERN
iy > \
ce ~ = NV 16 Se . 44h
7 = “ eS oy a y oy
2 Ca “Re \S 44% Wa as \ a. 4
INSET

SEDIMENT FENCE (OR AS DIRECTED BY
SITE SUPERINTENDENT

DIRTY WATER DIVERSION DRAIN

—-—- ——- - ALIGNMENT IS INDICATIVE ONLY - CONTRACTOR TO
ENSURE DIRTY WATER SITE RUN-OFF IS DIRECTED TO
SEDIMENT BASINS THROUGH ALL PHASES OF CONSTRUCTION

CLEAN WATER DIVERSION DRAIN

> ALIGNMENT 'S INDICATIVE ONLY - CONTRACTOR TO
ENSURE CLEAN WATER IS DIVERTED THROUGH SITE
DURING ALL PHASES OF CONSTRUCTION

SEDIMENT BASIN CATCHMENTS
EARTHWORKS SURFACE CONTOUR (0.25m INTERVAL}
EXISTING SURFACE CONTOUR (0.50m INTERVAL)

    
 

SEDIMENT FENCE ALONG EXISTING
if DOWNSTREAM BOUNDARIES PRIOR
/ 10 ANY CONSTRUCTION.

    
     
   
 
  
 
  

 

 

 

 

 

 

   
   

  
    
 

 

 
 

 

        
   
  

 

 

  

AREA OF CUT Z 7
AREA OF FILL é a
CONCRETE SLEEPER RETAINING WALL ! 3
ENTRY/EXIT POINT / ee NNN s
/ # /-’. CLEAN WATER DIVERSION DRAIN. bE
SPILLWAY ROCK SCOUR PROTECTION a Z } J REFER DWG, 15-001261-114 FOR uu
300mm HIGH ROCK CHECK DAMS ALONG CLEAN a He “J TYPICAL SECTION AND NOTES. cal
WATER DRAIN AT 50m INTERVALS. 1 / JX STRIP TOPSOIL AND FILL OVER un
SECURED GEO-FARBRIC TO INLETS OF BASINS | / 7 GLEAN WATER DRAIN AS FINAL wn
; 2 EARTHWORKS OPERATION. |Z
SEDIMENT BASIN NOTES - CONSTRUCTION PHASE A ul 408 \ i) >
1. DURING CONSTRUCTION PHASE DETENTION AND BIO-RETENTION vat g :
BASINS TO ACT AS TEMPORARY SEDIMENT BASINS. : i
2. STORMWATER OUTLETS TO BE TEMPORARILY BLOCKED OFF UNTIL 4 ]
i

  

 

SEDIMENT BASIN HAS BEEN DECOMMISSIONED.
3. ANY BIO-FILTRATION MEDIA IS NOT TO BE INSTALLED UNTIL
SEDIMENT BASIN HAS BEEN DECOMMISSIONED.

   

Sim

 

 

    

 

 

 

 

 

 

 

 

DRAWINGS TO BE READ IN CONJUNCTION WITH
APPROVED VEGETATION MANAGEMENT PLAN
2. REFER DRG 15-001261-113 FOR NOTES & DETAILS
3. PROVIDE TEMPORARY APPROVED CHILD RESISTANT
FENCE AROUND PERIMETER OF TEMPORARY SEDIMENT
BASINS TO MANUFACTURER’S SPECIFICATION. : 7
4, TOPSOIL STOCKPILES: \ ~
- TO BE PERIMETER FENCED WITH SEDIMENT FENCE. as
- NOT LOCATED IN SURFACE FLOW CORRIDORS.

NOTES:
1

 

 

 

 

 

 

 

—— Gi ; (02

 

 

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fleets: x sb-ormst ULE XU ouas-ESC X,16-0N261 BASE X_-A0UL_CUTRLLAATCH X_B-APTELCONTS US: adn youn

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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: s sa m5 oo 0 n a Mob: 0412 744 223 E: [email protected] a > hitan : =~ we EARTHWORKS PHASE LAYOUT

a pean “ T ROAD il Care Consulting (QLD) Ply Lid ‘Cu PLAN SHEET 1 OF 3

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Page 9

 

 

TEMPORARY SEDIMENT BASIN 2. -

BASE AREA - 604m

RL INVERT OF BASIN - 100.0

RL TOP OF BATTER - 102.0 (MIN)
RL OF SPILLWAY - 101.5

RL WATER SETTLING LEVEL - 101.5
RL SEDIMENT STORAGE DEPTH - 100.5
WIDTH OF SPILLWAY WEIR - 8.5m
MINIMUM SETTLING VOLUME = 622m?
MINIMUM STORAGE VOLUME = 311m?
MINIMUM TOTAL VOLUME = 933m?
TOTAL VOLUME ACHIEVED = 1973m?

 

 

 

 

NOTE:

BASIN LEVELS ARE A GUIDE ONLY
AND ARE TO BE CONFIRMED ON SITE
TO SUIT BEST WITH NATURAL
TERRAIN. CONTRACTOR TO ENSURE
MINIMUM VOLUMES ARE ACHIEVED.

 

 

 

SEDIM 3-
BASE AREA - 641m?
RL INVERT OF BASIN - 101.5
RL TOP OF BATTER - 103.5 {MIN}
RL OF SPILLWAY - 103.0
RL WATER SETTLING LEVEL - 103.0
RL SEDIMENT STORAGE DEPTH - 102.0
WIDTH OF SPILLWAY WEIR - 9.0m
MINIMUM SETTLING VOLUME = 682m?
MINIMUM STORAGE VOLUME = 341m*
MINIMUM TOTAL VOLUME = 1022m°
TOTAL VOLUME ACHIEVED = 1124m*

 

 

JOINS SHEET 1

STORMWATER BASIN TO BE UTILISED AS
A TEMPORARY SEDIMENT BASIN DURING
THE CONSTRUCTION PHASE. ENSURE

7 MINIMUM VOLUMES ARE ACHIEVED.

1

he

I :
SEDIMENT FENCE ALONG EXISTING DOWNSTREAM

STORMWATER BASIN TO BE UTILISED AS
A TEMPORARY SEDIMENT BASIN DURING
THE CONSTRUCTION PHASE. ENSURE
MINIMUM VOLUMES ARE ACHIEVED.

wy

 

- BOUNDARIES PRIOR TO ANY CONSTRUCTION.

’ ,

-HYDROMULCH BATTER.“ agi”
mr mee

/ cLuphoust Pas.

 

¢CLUB HOUSE AND POOL AREA PADS |~

NOTE:

JTO BE TOPSOILED AND DIRECT

 

 

 

SEEDED AS SOON AS PRACTICAL.

- — TEMPORARY
‘SEDIMENT BASIN

 

 

ae ¥

TEMPORARY

 

v1,

EAR
ar

 

iB

THWORKS

i
e.

MA TF "
CLEAN WATER DIVERSION DRAIN.
' REFER DWG. 15-001261-114 FOR
| TYPICAL SECTION AND NOTES.
[-STRIP TOPSOIL AND FILL OVER
ea CLEAN WATER DRAIN AS FINAL

OPERATION.

$

 

 

 

 

 

 

 

 

EMPORARY SEDIMENT BASIN & -

BASE AREA - 1048m
RL INVERT OF BASIN - 101.0

RL TOP OF BATTER - 103.0 (MINI

RL OF SPILLWAY - 102.5

RL WATER SETTLING LEVEL - 102.5
RL SEDIMENT STORAGE DEPTH - 101.5
WIDTH OF SPILLWAY WEIR - 12.0m
MINIMUM SETTLING VOLUME = 874m?
MINIMUM STORAGE VOLUME = 437m?
MINIMUM TOTAL VOLUME = 1311m?
TOTAL VOLUME ACHIEVED = 1778m*

 

 

 

 

NOTE:

BASIN LEVELS ARE A GUIDE ONLY
AND ARE TO BE CONFIRMED ON SITE
TO SUIT BEST WITH NATURAL
TERRAIN. CONTRACTOR TO ENSURE
MINIMUM VOLUMES ARE ACHIEVED.

 

 

 

 

 

 

 

NOTE:

BASIN LEVELS ARE A GUIDE ONLY
AND ARE TO BE CONFIRMED ON SITE
TO SUIT BEST WITH NATURAL
TERRAIN. CONTRACTOR TO ENSURE

 

 

MINIMUM VOLUMES ARE ACHIEVED.

 

 

 

 

 

JOINS SHEET 3

 

 

 

 

 

 

 

 

 

 

A

LE: -O8126ttthdeg DATE: 30-07-2015 TIME: 12.27
Xref: X_15-0OT261_TITLE X1S-O0T26-ESC X_B-A01261_BASE X_6-001261_CUTPLLHATCH X_SS-O01261_CONTS USR: ndum you

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

z

 

 

REF NO. 132007.2398.02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SS Ee pmciamner onTALe eon cro = EE “eroru™ | surveyor: ML_SURVEYS = ~*~ ‘SEDINE!

AY | AY | 26.065

gate te ear oe silane sire Cnc ao 1ase | PALM LAKE WORKS PTY LTD CZ Fan |g SEDIMENT AND EROSION CONTROL
ile Son © PROIECT Ho, TROD 19 TRADING POST ROAD al 1 ‘uty PLAN SHEET 2 OF 3

ie - COROT calibre fi apladen es | arame er =
ue “iW eenee et ii enn — PALM LAKE RESORT callore rae foes aoa aoe es 15-001261-111 A

 

Page 10

 

Sav A
\ 7 tf

SEDIMENT FENCE ALONG EXISTING wre _ Nfe
DOWNSTREAM BOUNDARIES PRIOR _— “~
TO ANY CONSTRUCTION. :

  

 

Q TEMPORARY SEDIMENT BASIN 5 -

ce BASE LENGTH - 31.0m

nS BASE WIDTH - 19.0m

RL INVERT OF BASIN - 104.5

as RL TOP OF BATTER - 106.5 (MIN)
8 RL OF SPILLWAY - 106.0

Mt RL WATER SETTLING LEVEL - 106.0

. . RL SEDIMENT STORAGE DEPTH - 105.0

\\ WIDTH OF SPILLWAY WEIR - 9.5m
si MINIMUM SETTLING VOLUME = 679m?
sy MINIMUM STORAGE VOLUME = 339m?

MINIMUM TOTAL VOLUME = 1018m?
TOTAL VOLUME ACHIEVED = 1043m?

NOTE:

BASIN LEVELS ARE A GUIDE ONLY
AND ARE TQ BE CONFIRMED ON SITE
TO SUIT BEST WITH NATURAL
TERRAIN. CONTRACTOR TO ENSURE
MINIMUM VOLUMES ARE ACHIEVED.

 

 
 
   
   
   
    

NOTE:
, WBOWLING GREEN AND CARPARK
4 \ [PAD TO BE TOPSOILED AND DIRECT);
SEEDED AS SOON AS PRACTICAL.

 

 

 

 

 

 

 

 

 

 

 

CATCHMENTS
NAME AREA (HA)
SEDIMENT BASIN 1 2.34
SEDIMENT BASIN 2 2.29
SEDIMENT BASIN 3 251
SEDIMENT BASIN & 3.22
SEDIMENT BASIN 5 2.50

EXTERNAL ELM STREET (CLEAN WATER 2.05
DIVERSION) “

 

ra

 

 

 
     
     
 
 
 

 

 

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“AGED CARE SITE TO BE
-JTOPSOILED AND DIRECT SEEDED
JAS SOON AS PRACTICAL.
ye = ———

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OF OVERLAND FLOW PATH. *S SOP ze

FILE: -O81261-112.dwq DATE: 30-47-2605 TIME: 1227
Pxref's: X_15-00T261_TITLE XB-O81261-ESC X_15-O01241_BASE X_15-000261_CUTFLLHATCH X_16-DOW61_CONTS USR: adam young

' \ REF NO. 132007.2398.02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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wel fr [eae] Tih 3b Neypencae Street™ Chelmer QLD 4068 PALM LAKE WORKS PTY LTD cn avun SEDIMENT AND EROSION CONTROL
é 7 2 1500 10 5 0 2 AL Mob: 0412 744 223 E: [email protected] —_ va EARTHWORKS PHASE LAYOUT
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it iW 5-001261 arwoasd Yn ewevtn PALM LAKE RESORT CONSULTING oer Me Tete OSes 15-001261-112 A

 

 

 

 

 

Page 11

 

   
  
   
 
 
 
    
  
 
 
 
 
 
 
 
 
   
   
 
 
  
   
 
   
 
 
  
 
   

EROSION AND SEDIMENT CONTROL NOTES: SEDIMENT BASIN NOTES:

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  
 
 
 
    

 

 

     
 

     

 

 

 

 

     
  
 
  
    
 
  
   
  

 

 

     
  

 

 

 

 

   
   
  

  
  
  

 

 

 

 

 

  

 

 

 

 

4. THE CONTRACTOR IS TO TAKE ALL NECESSARY PRECAUTIONS TO CONTROL AND MINIMISE EROSION AND 1, SEDIMENT BASIN CONSTRUCTION AND MAINTENANCE TO BE IN ACCORDANCE WITH SOIL EROSION AND SEDIMENT PROVIDE SECURED
DOWNSTREAM SEDIMENTATION DURING ALL STAGES OF CONSTRUCTION INCLUDING THE MAINTENANCE PERIOD. CONTROL - ENGINEERING GUIDELINES FOR GLD CONSTRUCTION SITES - IEA QLD; AS PER NOOSA SHIRE COUNCIL GEOFABRIC TO INVERT AND
2, NOTWITHSTANDING THE DESIGN SHOWN ON THE DRAWINGS, THE CONTRACTOR IS RESPONSIBLE TO PSPOS CLAUSE 5.2. BATTERS AT BASIN INLETS.
IMPLEMENT SEDIMENT CONTROL DEVICES USING BEST PRACTICES AS NECESSARY TO MINIMISE THE 2. FOR THE ENTIRE EMBANKMENT AREA STRIPPING OF VEGETATION AND ANY HIGHLY ORGANIC TOP SOILS AND
QUANTITY OF SEDIMENT LEAVING THE SITE. ANY SOFT CLAYS TO DEPTHS OF APPROXIMATELY 0.3m IS REQUIRED. a
3. SOME VARIATIONS TO THE SPECIFIED CONSTRUCTION SEQUENCE MAY BE NECESSARY IN CERTAIN AREAS TO 3. THE STRIPPED SURFACE IS TO BE INSPECTED AND TESTED BY A GEOTECHNICAL ENGINEER. —__
FACILITATE CONSTRUCTION. WHERE THIS IS THE CASE, ANY VARIATION MUST BE APPROVED BY THE 4, SUBJECT TO THE GEOTECHNICAL ENGINEER INSPECTION EXCAVATION OF A CUTOFF KEY ALONG THE Ket
SUPERINTENDENT PRIOR TO IMPLEMENTATION. EMBANKMENT CENTERLINE AT LEAST 0.5m - 1.0m INTO THE FOUNDATION MATERIALS SHALL BE REQUIRED.
4. AT ALL TIMES THE CONTRACTOR SHALL MONITOR THE PREVAILING WEATHER CONDITIONS AND PROTECT 5. THE CLAY FILLING FOR THE BASIN SHOULD BE PLACED IN HORIZONTAL LAYERS OF 200mm THICKNESS AND BASE
ANY DOWNSTREAM CONSTRUCTION GULLY INLETS. COMPACTED TO A DENSITY RATIO WITHIN THE RANGE 98% - 102% STANDARD COMPACTION (AS 1289.5.1.11. ‘WIDTH
5, CLEARING OF SITE AND STOCKPILE SITE TO BE DETERMINED ON SITE BY SUPERINTENDENT AND IS TO BE CLEAR OF PLACEMENT MOISTURE CONTENTS SHOULD BE WITHIN THE RANGE OMC - 1% TO OMC + 2% (WHERE OMC =
ANY WATER COURSE. OPTIMUM MOISTURE CONTENT FOR STANDARD COMPACTION),
6. WHERE POSSIBLE PROVIDE CUT-OFF DRAINS TO DIVERT CLEAN WATER FROM UNDISTURBED CATCHMENT. 8. WATER QUALITY SAMPLES MUST BE TAKEN AND ANALYSED PRIOR TO THE RELEASE OF ANY WATER FROM TYPICAL DIVERSION DRAIN DETAIL
7. ALL PERINETER BANKS/SWALES SHALL HAVE UNINTERRUPTED POSITIVE GRADE TO AN OUTLET. THE SEDIMENT BASINS. WATER QUALITY MUST SATISFY THE FOLLOWING CRITERIA: TSS < SOmg/L, PH NTS,
8. CONSTRUCT WASH DOWN BAY OR SHAKE DOWN AT ENTRY/EXIT TO COUNCIL STANDARDS AND TO THE BETWEEN 6.5 AND 8.5 AT ALL TIMES, RESULTS ARE REQUIRED TO BE FORWARDED TO SUPERINTENDENT
SATISFACTION OF COUNCIL'S LICENSING AND COMPLIANCE OFFICER. WITHIN 48 HOURS OF SAMPLING. DRAIN TYPE | BASE WIDTH | DEPTH MIN-SLOPE
9. THE EXTENT OF GRASSING OR HYDROMULCHING BE DETERMINED BY THE ENGINEER AND SHALL BE SEEDED, 9. ALL WATER QUALITY SAMPLES DATA INCLUDING DATES OF RAINFALL, DATES OF TESTING AND WATER DI-A Om 0.5m 0.5%
AS SPECIFIED, WITHIN SEVEN DAYS OF FINAL TRIMMING. RELEASE, MUST BE MAINTAINED IN AN ON-SITE REGISTER. THIS REGISTER IS TO BE MAINTAINED FOR THE D1-B om 0.5m 0.5%
10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLYING WITH COUNCIL’S REQUIREMENTS IN RELATION TO DURATION OF THE APPROVED WORKS, AND BE AVAILABLE FOR INSPECTION BY COUNCIL OFFICERS ON REQUEST. D2-A 8.5m 0.5m 8.5%
GRASS STRIKE AND GRASS COVERAGE RATES AT THE ON AND OFF MAINTENANCE INSPECTIONS. 10. FLOCCULATION AGENT FOR TYPE ‘D‘ BASIN SHALL BE GYPSUM DOSED AT ABOUT 32kg/100Cum. CONTRACTOR pe8 on 8.5m a
1 ALL MATERIALS TRACKED OR SEDIMENT WASHED ONTO COUNCIL'S ROAD FROM THE DEVELOPMENT ARE TO TO HAVE SUPPLY OF FLOCCULATION AGENT AVAILABLE ON SITE. a a 230 ie
BE BROOMED UP AND COLLECTED. 11. FLOCCULATION, TESTING AND DEWATERING IN A NON-EROSIVE MANNER SHALL BE COMPLETED WITHIN S Da8 in ten a
12. ALL SEDIMENT CONTROL DEVICES SHALL BE MONITORED, CLEANED AND/OR REPAIRED WHENEVER THE BUSINESS DAYS FROM A RUN-OFF INCLUDING RAIN EVENT. ANY WATER DISCHARGED FROM THE SEDIMENT D5sA 15m Dem 1%
CAPACITY OF THE EROSION AND SEDIMENT CONTROL MEASURE FALLS BELOW 75%. BASIN AND RELEASED OFF-SITE MUST ACHIEVE THE WATER QUALITY CRITERIA PRIOR TO BEING RELEASED SB tm Dem 15%
73. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED AT LEAST DAILY (WHEN WORK IS FROM THE SITE. :
OCCURRING ON SITE) OR WEEKLY (WHEN WORK IS NOT OCCURRING ON SITE). WITHIN 24 HOURS OF 12. ALL REASONABLE AND PRACTICAL MEASURES SHALL BE TAKEN TO DIRECT STORMWATER TO SEDIMENT BASINS
EXPECTED RAIN AND WITHIN 18 HOURS OF A RAINFALL EVENT AS REQUIRED TO MAINTAIN CONTROL USING CONTOURED CATCH DRAINS.
DEVICES. 33. WHERE REQUIRED DURING ROAD CONSTRUCTION, SUITABLE GAPS IN THE KERB SHALL BE LEFT IN ORDER TO
14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL (ESC) MEASURES ARE TO BE MAINTAINED AND FULLY ALLOW DIVERSION DRAINS AND THE PLACEMENT OF SAND BAGS ACROSS THE ROAD WIDTH TO DIVERT HN LeNGry BERM {0.3m
OPERATIONAL DURING THE MAINTENANCE PERIOD, AND ARE TO BE REMOVED AFTER THE SATISFACTORY SURFACE FLOWS TO TEMPORARY SEDIMENT BASINS. 5.0m/ MIN HIGH)
COMPLETION OF AN ‘OFF MAINTENANCE’ INSPECTION AND PRIOR TO FORMAL ACCEPTANCE BY COUNCIL. 14. BASINS INLETS SHALL BE PROTECTED FROM EROSION AND SCOUR BY IMPLEMENTING ROCK OR GEOTEXTILE
45. NO OBSTRUCTIONS SHALL BE PLACED ON COUNCIL'S PUBLIC ROADS OR GULLY PITS FOR SAFETY REASONS. LINED CHUTES.
45. A PRIMARY OUTLET/EMERGENCY SPILLWAY SHALL BE IMPLEMENTED ON EACH SEDIMENT BASIN TO
ACCOMMODATE A 20-YEAR ARI. GEOTEXTILE
SEDIMENT MANAGEMENT PROGRAM: 16. SEDIMENT BASINS EMERGENCY SPILLWAYS, SPILLWAY CHUTES AND OUTLET CHANNELS FROM THE SEDIMENT FABRIC YZ
1. CLEARING BASINS SHALL BE ADEQUATELY STABILISED AGAINST EROSION/SCOUR AND REMAIN STRUCTURALLY STABLE
= INSTALL APPROPRIATE SAFETY FENCING AND SIGNAGE. UP TO AND INCLUDING THE A 20-YEAR ARI RAIN EVENT”. A RUNOFF FROM PAD DIRECTED
~ SEDIMENT FENCE, SEDIMENT BASINS AND DIVERSION DRAINS TO BE CONSTRUCTED AS REQUIRED. 17. ALL BASINS TO BE SURROUNDED BY TEMPORARY SAFETY FENCING AND WARNING SIGNS SHALL BE ERECTED TO SEDIMENT TRAP GRAVEL
- EXISTING GRASSED AREAS TO REMAIN WHERE POSSIBLE, SURROUNDING THE BASIN AND STEEP, INTERNAL SLOPES SHALL BE AVOIDED.
- SHAKE DOWN/WASH DOWN BAY AT NOMINATED ENTRY/EXIT POINT ON TRADING POST ROAD AS REQUIRED.
- CONSTRUCT UPSTREAM CLEAN WATER DIVERSION DRAINS x DIVERSION DRAIN TEMPORARY CONSTRUCTIGN EXIT WASHDOWN DEVICE
- SUPERINTENDENT TO CONFIRM EXTENT OF CLEARING TO CONTRACTOR PRIOR TO COMMENCEMENT OF WORKS. REMOVE FABRIC BETWEEN PROVIDE SECURED GEOFABRIC TO INVERT NTS.
- REFER ALSO TO VEGETATION MANAGEMENT PLAN. STEEL PICKET IN SAGS x AND BATTERS AT BASIN INLETS.
2. EARTHWORKS E ™— T7177
- SEDIMENT FENCES AND DIVERSION DRAINS TO BE CONSTRUCTED AS REQUIRED 5m? LOOSE PLACED Os PT Ty]
3. STOCKPILE an, ROCK NOMINAL 200mm@ 4
- SEDIMENT FENCE TO BE ERECTED Sm FROM TOE OF BATTER ON LOW SIDE OF STOCKPILE. th \ N on
- CUT OFF DRAIN ON HIGH SIDE TO DIRECT SURFACE RUNOFF AROUND STOCKPILE. WY ~]
4, MAINTENANCE PERIOD TYPICAL i
- ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED: SAND BAGS BOTH SIDES SEDIMENT BASIN
- AT LEAST DAILY {WHEN WORK IS OCCURRING ON SITE) OR WEEKLY (WHEN WORK IS NOT OCCURRING ON SITE) MESH OR GEOFABRIC: OF OVERFLOW PATH DIVERSION DRAIN (SIZE AS DS
~ WITHIN 24 HOURS OF EXPECTED RAIN; AND ON GROUND TO EXTEND TO BACK OF NOMINATED) OVERFLOW WEIR
~ WITHIN 18 HOURS OF A RAINFALL EVENT REDUCE EROSION PAVEMENT BOX _____t WIDTH AS SPECIFIED
= ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED THE SAME DAY WHEN THE CAPACITY > Ss
OF THE EROSION AND SEDIMENT CONTROL MEASURE FALLS BELOW 75%. SPILL THROUGH WEIR DETAIL a GN LAYOUT PLANS | 10P OF BANK
- ANY REPAIRS TO EROSION AND SEDIMENT CONTROL DEVICES ARE TO BE EFFECTED IMMEDIATELY. SEDIMENT INSTALL AT ALL SAG POINTS IN SILT FENCES Look bb ob IS ‘
AFTER RAIN IS TO BE CLEANED FROM STREETS AND ALLOTMENTS IMMEDIATELY AND CORRECTIVE ACTION TAKEN
TO AVOID A RE-OCCURRENCE OF THE FAILURE.
SEDIMENT CONTROL FABRIC TO BE POSTS AT NOMINAL 2.0m TYPICAL SEDIMENT BASIN EXTEND SANDBAGS TO GEOTEXTILE ROCK LINED BASE,
CONSTRUCTION SEQUENCE: ‘PROPEX’ OR SIMILAR APPROVED CTRS TO BE STEEL PICKET NTS. BATTER EXTENTS 300mm THICK,
A. CONSTRUCT ENTRY AND EXIT POINT TOGETHER WITH SHAKE DOWN DEVICE ON TRADING POST ROAD. EGE EDGE —10_BE SUITABLY, OR 50 x 50 HARDWOOD SIZE Dse = 200mm.
B. ERECT SEDIMENT FENCES ALONG DOWNSTREAM ADJACENT PROPERTY BOUNDARIES. PLACE BARRIER FENCES SUPPORTED BETWEEN POSTS SECTION (AY
AROUND LOTS OR AREAS THAT DO NOT REQUIRE DISTURBANCE TO ENSURE AREAS REMAIN UNDISTURBED. NS. \-A
C. CONSTRUCT CLEAN WATER DIVERSION SWALES TO ENSURE UPSTREAM RUNOFF IS DIVERTED AROUND THE SITE. 2 WIE
ALL DIVERSION SWALES ARE TO BE CONSTRUCTED PRIOR TO ANY EARTHWORKS OPERATIONS, 3 PROVIDE SMALL UPSTREAM
D, CLEARING, GRUBBING AND EARTHWORKS OF SEDIMENT BASIN AREAS ONLY. 2 a ane ‘ €|")
E. CONSTRUCT TEMPORARY SEDIMENT BASINS, WITH NON-DISPERSIVE MATERIAL, SPILLWAY, AND OTHER < (2-3m) AT 30m
ASSOCIATED WOEKS, 2 MAX, SPACINGS ALONG FENCE
F. CONSTRUCT DIVERSION DRAINS DIRECTING DIRTY WATER INTO SEDIMENT BASINS. 1 Lt 25 PREVENT WATERTGE PAGE
G. CLEARING, GRUBBING AND STRIPPING FOR THE REMAINDER OF THE SITES EARTHWORKS AREAS. DIRECT “l 22 ALAS SPECED .
RUN-OFF TO SEDIMENT BASINS. 200 x 200 7 &
H. UNDERTAKE EARTHWORKS OPERATIONS.. TRENCH a CREST
| ERECT SEDIMENT FENCES TO LOTS. — li
J. PLACE SEDIMENT FENCES AT BOUNDARIES ADJACENT TO ROADWAYS WHERE LOT SLOPES TOWARDS ROAD. SEDIMENT FENCE DETAIL Pee Fa ae by
K. TOPSOIL AND GRASS SEED ALL REMAINING LOTS FOLLOWING PROGRESSIVE COMPLETION OF EARTHWORKS IF NTS. sr

  

DIRECTED BY SUPERINTENDENT.
L. ON COMPLETION OF WORKS AS STATED ABOVE, ESTABLISHMENT OF 70% GRASS COVER AND APPROVAL BY
Sree REMOVE SEDIMENT BASIN, ev Lies AND halngrtne AREAS. GRASS SEED IMMEDIATELY.

NOTE:
SEDIMENT BASINS TO HAVE CHILD
RESTRAINT FENCING FOR DURATION OF USE

 
    
 

 

 

EoMPeTe REMAINING EARTHWORKS OPERATIONS TO AREAS nee SEDIMENT BASINS AND DIVERSION
DRAINS HAVE BEEN REMOVED. ENSURE ADEQUATE SEDIMENT FENCES ARE PLACED DOWNSTREAM OF
ALL WORKS.

ph x
LEVEL so J
NOTE:

BASIN LEVELS ARE A GUIDE ONLY AND ARE TYPICAL TEMPORARY SEDIMENT BASIN (TYPE D)
TO BE CONFIRMED ON SITE TO SUIT BEST
WITH NATURAL TERRAIN. CONTRACTOR TO
ENSURE MINIMUM VOLUMES ARE ACHIEVED.

 
 
 

   
 

 

 

 

 

 

FILE: Sam Bi DATE: 31-07-206 THE: 141

REF NO. 132007.2398.02

 

 

 

 

 

 

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Page 12

 

NATURAL SURFACE LEVEL
FINISHED EARTHWORKS LEVEL

SSS == FINISHED EARTHWORKS LEVEL
UPON REMOVAL OF SEDIMENT BASINS
AND DIVERSION DRAINS

—_——————— ~— SEDIMENT FENCE

EXISTING GULLY TO BE LEFT EXPOSED DURING THE EARTHWORKS
PHASE AS A CLEAN WATER DIVERSION DRAIN THROUGH THE SITE.
EXISTING GRASS SURFACE TO REMAIN. IN AREAS WHERE NATURAL
GRASS AND VEGETATION IS LACKING THEN GEO-FABRIC LINING TO BE
ADOPTED. GEO-FABRIC TO BE REMOVED AND TOPSOIL STRIPPED
AND FILLED AS PART OF FINAL EARTHWORKS OPERATION.

DIRTY DRAIN (D2-A}

DIRTY DRAIN (D3-B)

  

  

SCALE {All

SECTION (A
SCALE (43 UY,

COMPLETE REMAINING EARTHWORKS OPERATIONS TO
AREAS WHERE SEDIMENT BASINS AND DIVERSION DRAINS

REFER DWG. 15-001261-113 FOR
TYPICAL TEMPORARY SEDIMENT

        

 

 

   
  
   
 
  
  

   

 

 
 
 
   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HAVE BEEN REMOVED. ENSURE ADEQUATE SEDIMENT
LEAVE 0.5m EITHER SIDE OF TOP OF BASIN AND SPILLWAY DETAILS.
CHANNEL EXPOSED. INSTALL SEDIMENT FENCES ARE PLACED DOWNSTREAM OF ALL WORKS.
FENCES ALONG EDGE OF EXISTING CHANNEL SPILLWAY ROCK -
SCOUR PROTECTION RL 103.5 Hebe ALS
- TEMPORARY SEDIMENT oT
a ee _ BASIN3- ma
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WA yy vv WANA ge — — om —
SECTION (8)
SCALE [Atl: Kt)
SCALE (43)
INCREASE BATTER SLOPES TO 1 IN 2
MAX IN AREAS WHERE CHANNEL BASE
WIDTH TO REDUCE OVERALL WIDTH.
RL 104.26
DIRTY DRAIN (D3-A)
RL 102.37
TEMPORARY SEDIMENT 99 {>—@—<—-— WR a NOTE:
. 0.50m. SEDIMENT BASINS TO HAVE CHILD
BASIN 2 - RESTRAINT FENCING FOR DURATION OF USE
RL_100.0 a
ie WWW VN WA WA vA NOTE:
BASIN LEVELS ARE A GUIDE ONLY AND ARE
TO BE CONFIRMED ON SITE TO SUIT BEST
eat (tc WITH NATURAL TERRAIN. CONTRACTOR TO
cate eaa Ka) ENSURE MINIMUM VOLUMES ARE ACHIEVED.
fiteee Xe anor trie Usk ator yeu REF NO. 132007.2398.02
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