Appendix E - Stormwater Management Plan

 

 

 

 

  

RETAINING WALL
(SLEEPERS)

 

 

 

 

 

 

 

 

 

 

ACCESS GATE FOR 7
22 MAINTENANCE

 

 

 

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DRAWINGS FOR ROAD AND

REFER TO STAGE 1A
OPERATIONAL WORKS

 

DRAINAGE LAYOUT

 

GROSS POLLUTANT
TRAP (GPT)

1.

 

 

 

 

 

 

CENTRAL BIORETENTION BASIN SPECIFICATIONS
SERERAL BIURE TENTION BASIN SPECIICA TIONS.

FILTER MEDIA AREA: 650.25m‘

* /|BIORETENTION BASIN

 

 

CENTRAL

 

 

  
   
  
   
 

 

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NO PONDING (i.e. DEPRESSIONS OR
MOUNDS) THAT WOULD PROHIBIT
FISH HOVERENT BETWEEN ZONES
1

   

 

 

“gn WATER QUALITY CONTROL POND)
(INCLUDING DETENTION STORAGE)

 

 

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om Nenigen WALL

     

    

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PERMANENT SIGNAGE 3.
FOR BIORETENTION BASIN
(REFER TO NOTE 11) 4

CLUB HOUSE

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: Ry F FENCE

  
    
  

 

   

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RETAINING WALL
(SLEEPERS)

BOWLING a

5

SIGNAGE TO BE ERECTED
AROUND POND AND OUTDOOR
BBQ AREAS TO DISCOURAGE
FEEDING OF BIRDS

ANY SOFT CLAYS TO DEPTHS OF APPROXIMATELY 0.3m IS REQUIRED.

THE STRIPPED SURFACE AND EMBANKMENT FOUNDATION IS TO BE INSPECTED AND TESTED BY A GEOTECHNICAL

ENGINEER.

SUBJECT TO THE GEOTECHNICAL ENGINEER INSPECTION EXCAVATION OF A CUTOFF KEY ALONG THE NEW
EMBANKMENT CENTRELINE AT LEAST 0.5m - 1.0m INTO THE FOUNDATION MATERIALS SHALL BE REQUIRED.
POND TO BE LINED WITH IMPERVIOUS SURFACE, ie: CLAY OR OTHER APPROVED MATERIAL, i.e. BELOW NOL RL

99.20.

ROCK RETAINING WALL

10m OVERFLOW WEIR
RL 100.90

   

 
   
      
  
  
 
      
    
  
 
  
   
 
 
 

   
 

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FOR THE ENTIRE NEW EMBANKMENT AREA STRIPPING OF VEGETATION AND ANY HIGHLY ORGANIC TOP SOILS AND

sta POND) SPECIFICATIONS

NORMAL OPERATING LEVEL: RL 99.20

NORMAL OPERATING AREA: 1,940m?

PERMANENT PONDED VOLUME: 1,840m?
TEMPORARY PONDING SURFACE LEVEL: RL 99.60
EXTENDED DETENTION DEPTH: 400mm

DEEP WATER ZONE SURFACE AREA: 1,495m?
MACROPHYTE PLANTING AREA: 443m?
NOTIONAL DETENTION TIME: 48.4 hrs
EQUIVALENT PIPE DIAMETER: 55mm

Pera wns

 
  
  
 

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CARPARK DESIGN TO BE 7

CONFIRMED DURING
DETAILED DESIGN mise) /

3
7

 

 

 

 
 

DESIGN SURFACE CONTOUR
{0.2m INTERVALS)

“TTT TTT” BATTERS (GRADE AS SPECIFIED)
PROPOSED BOULDER RETAINING WALL
PROPOSED SLEEPER RETAINING WALL
PROPOSED FENCE

EXISTING STORMWATER PIPE

 

 

 

PROPOSED STORMWATER PIPE
FUTURE STORMWATER PIPE
© 100% SUBSOIL AND CLEANOUT PITS

SUBSOIL COLLECTOR
ROCK SCOUR PROTECTION

 

ae) ur
MACROPHYTE ZONE

REINFORCED TURF

MAINTENANCE ACCESS TRACK
(REINFORCED TURF)

THE CLAY FILLING FOR THE WETLAND SHOULD BE PLACED IN TWO HORIZONTAL LAYERS OF 150mm THICKNESS.
CLAY LINER SHOULD HAVE A MINIMUM THICKNESS OF 300mm AND COMPACTED TO A DENSITY RATIO WITHIN THE TES:

RANGE 98% - 102% STANDARD COMPACTION (AS 1289.5.1.1). PLACEMENT MOISTURE CONTENTS SHOULD BE
OPTIMUM MOISTURE CONTENT FOR STANDARD

WITHIN THE RANGE OMC - 1% TO OMC
COMPACTION).

+ 2% (WHERE OMC =

CLAY LINER SHOULD HAVE A MAXIMUM HYDRAULIC CONDUCTIVITY OF 1x10-? m/s.

NON-DISPERSIVE CLAYS ARE DESIRABLE.

1, REFER TO LANDSCAPE ARCHITECTS DRAWINGS FOR PLANTING
DETAILS.

2. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH LATEST
ISSUE OF CALIBRE CONSULTING REPORT No. 16-001014-01.

TOPSOIL MUST BE TESTED BY N.A.T.A. ACCREDITED LABORATORY IN ACCORDANCE WITH A.S. 4419 (SOILS FOR
LANDSCAPING AND GARDEN USE) AND SHOULD BE PLACED TO A MINIMUM DEPTH OF 300mm.
TOPSOIL MAY BE TREATED WITH GYPSUM OR LIME.

3. REFER TO DRG No. 16-001014-403 TO 16-001014-406 FOR
BASIN SETOUT DATA.

 

 

 

 

 

 

 

 

 

 

 

 

2. FILTER DEPTH: 0.4m 10. TOPSOIL LAYER (OVER CLAY LAYER) REQUIRED FOR MACROPHYTE PLANTING AREAS.

3. EXTENDED DETENTION DEPTH: 0.3m 11. PERMANENT SIGNAGE TO READ: “BIORETENTION BASIN - THIS BIORETENTION BASIN REDUCES THE POLLUTION OF 4. REFER TO DRG No. 16-001014-400 FOR GENERAL NOTES AND

4, BASIN SURFACE LEVEL: 100.05m AHD OUR WATERWAYS BY REDUCING THE AMOUNT OF HEAVY METALS, LITTER, SUSPENDED SOLIDS, AND NUTRIENTS DETAILS.

DISCHARGED TO SIX MILE CREEK"
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