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Log in to see the plans as drawn BIORETENTION NOTES
1. THE CONTRACTOR SHALL PROVIDE CERTIFICATION FROM THE SUPPLIER THAT THE BIO-FILTRATION
MEDIA COMPLIES WITH THE CURRENT VERSION OF THE 'GUIDELINES FOR SOIL FILTER MEDIA IN
BIORETENTION SYSTEMS (VERSION 2.01, MARCH 2008 OR LATER)' PREPARED BY THE FACILITY FOR
ADVANCING WATER BIOFILTRATION (FAWB), MONASH UNIVERSITY PRIOR TO INSTALLATION (THE
CURRENT VERSION OF THE GUIDELINES IS AVAILABLE FOR FREE DOWNLOAD FROM
HTTP:\\WWW.MONASH.EDU.AU/FAWB/PUBLICATIONS/INDEX.HTML).
PROVIDE ROW OF BLOCKWORK 2.47m PROPOSED CONCRETE SCOUR 2. SANDY LOAM FILTER MATERIAL PROPERTIES
WITHIN 45° OF INLET. 300mm GAP PROTECTION FOR
BETWEEN ROWS. D STORMWATER OUTLET HYDRAULIC CONDUCTIVITY 180 mm/hr
C4.03
TW PARTICLE CONTENT CLAY AND SILY (<0.05m DIAMETER) <3%
0
2. 01
01
RWB 2. VERY FINE SAND (0.05-0.15m DIAMETER) 5-30%
0
TW FINE SAND (0.15-0.25mm DIAMETER) 10-30%
MEDIUM TO COARSE SAND (0.25-1.00mm DIAMETER 40-60%
S1
00
1.00m
.0
.0
S1
00
COARSE SAND (1.0-2.0mm DIAMETER) 7-10%
A FINE GRAVEL (2.0-3.4mm DIAMETER) <3%
TW
0
98
C4.03
1.
1.
RWB ORGANIC MATTER CONTENT <5% w/w
98
TW
0 HER HER
pH 5.5 - 7.5 pH
S0
80
ELECTRICAL CONDUCTIVITY <1.2 ds/m
.7
.7
S0
80 PROPOSED HIGH PHOSPHORUS CONCENTRATION <100 mh/kg
END RISER
3. FILTER MEDIA SHOULD BE FREE FROM RUBBISH, DELETERIOUS MATERIAL, TOXICANTS, DECLARED
PLANTS AND LOCAL WEEDS. FILTER MEDIA SHOULD NOT BE HYDROPHOBIC OR DISPERSIBLE.
4. ALL LAYERS OF BIORETENTION SYSTEM TO BE INSTALLED DURING DRY WEATHER.
5. FILTER MEDIA SHOULD BE WELL GRADED, WITH NO GAPS IN THE PARTICLE SIZE GRADING.
6. TRANSITION LAYER TO BE CLEAN, WELL-GRADED COARSE SAND (CONTAINING < 2% FINES).
7. DRAINAGE LAYER TO BE CLEAN, FINE GRAVEL WITH 2-5mm WASHED SCREENINGS (CONTAINING < 2%
FINES, MIN. SATURATED HYDRAULIC CONDUCTIVITY 4000mm/hr).
8. INSTALL FILTER MEDIA IN TWO LIFTS IF DEPTH >500mm.
9. FILTER MEDIA TO BE LIGHTLY COMPACTED DURING INSTALLATION, USING A SINGLE PASS WITH A LIGHT
B ROLLER. NO OVER TRAFFICKING, MULTIPLE PASSES OR HEAVY COMPACTION TO BE APPLIED TO THE
RWB
RWB
C4.03 1.00m FILTER MEDIA.
6.60m
10.ENSURE SURFACE OF BIORETENTION BASIN IS FLAT AT DESIGN LEVEL.
11. CONSTRUCTION TOLERANCES SHOULD BE IN ACCORDANCE WITH TABLE BELOW, UNLESS NOTED
DIFFERENTLY BY LOCAL AUTHORITY GUIDELINES/STANDARDS.
HYDRAULIC STRUCTURES +/- 25mm*
9.65m
1.00m
UNDER-DRAINAGE PIPES +/- 25mm
RWB
RWB
EARTHWORKS FOR BASIN BASE +/- 25mm
DRAINAGE AND TRANSITION LAYERS +/- 25mm
PROVIDE ROW OF BLOCKWORK SURFACE LEVEL +/- 25mm
WITHIN 45° OF INLET. 300mm GAP EMBANKMENT AND BUNDS - 25mm, + 50mm
PROPOSED HIGH BETWEEN ROWS.
HER HER
C
END RISER 12.UNDERDRAINAGE PIPES SHOULD BE 100mm DIAMETER SLOTTED PVC PIPES AT A MINIMUM GRADE OF
C4.03
0.5% SLOPED TOWARD OUTLET (UNLESS NOTED OTHERWISE ON DRAWING). PIPE SLOTS TO BE 2MM OR
SMALLER (AS2439 PART 1).
PROPOSED CONCRETE SCOUR 13.UNDERDRAINAGE PIPES SHOULD NOT BE WRAPPED IN GEOFABRIC OR FILTER SOCKS AND SHOULD
PROTECTION FOR HAVE A MINIMUM OF 50mm OF DRAINAGE MATERIAL ABOVE THE OBVERT OF THE PIPE.
1.00m
STORMWATER OUTLET 14.BASIN BASE TO BE SLOPED TOWARD OUTLET AT MINIMUM GRADE OF 0.5%. BASE OF TRENCH/BASIN TO
80
S0
.7
BE FREE OF LOCALISED DEPRESSIONS.
.7
S0
80
15.BASIN WALLS, FLOOR AND BATTERS TO BE LINED WITH PERMEABLE GEOFABRIC LINER (BIDIM A29 OR
TW EQUIVALENT). LINER TO BE KEYED INTO BATTERS AND PINNED TO IN-SITU SOILS.
9 80 RWB 1. 16. CONTRACTOR TO GET SIGN OFFS FOR HEALTHY WATERWAYS BIORETENTION BASIN CONSTRUCTION
1. 980
T W POOL FENCE TO BE CONSTRUCTED AND ESTABLISHMENT SIGN OFF FORMS (INCLUDING INCLUDING PRE-START MEETING FORM AND FORMS
ALONG TOP OF RETAINING STRUCTURE. A-G) FOR USE THROUGHTOUT CCONSTRUCTION.
POOL FENCE TO BE CONSTRUCTED HER HER
TO BE BUILT IN ACCORDANCE WITH 17. STORMWATER QUALITY TREATMENT EFFECTIVENESS CONFORMS TO THE FOLLOWING TABLE
ALONG TOP OF RETAINING STRUCTURE.
0
S1
2.38m
0
MANUFACTURERS SPECIFICATIONS
.0
TO BE BUILT IN ACCORDANCE WITH
.
00
S1
WATER QUALITY TARGET
0
MANUFACTURERS SPECIFICATIONS POLLUTANT REDUCTION (%)
(%)
10
TW
0 RWB TOTAL SUSPENDED SOLIDS 80 82.1
2.
2.
TW
01
TOTAL PHOSPHORUS 60 74
0
PROPOSED HIGH TOTAL NITROGEN 45 50
END RISER
GROSS POLLUTANTS 90 100
CONSTRUCTION PHASE PROTECTION
1. IT IS THE CONTRACTOR'S RESPONSIBILITY TO ENSURE THE BIORETENTION SYSTEM IS
APPROPRIATELY PROTECTED THROUGHOUT THE DURATION OF CONSTRUCTION WORKS.
2. AS SOON AS FILTER MEDIA INSTALLED IN BIORETENTION SYSTEM, FILTER MEDIA SHOULD BE
PROTECTED WITH GEOFABRIC, TOPSOIL AND TURF UNTIL 90% OF CONSTRUCTION AND BUILDINGS
WORKS COMPLETED. THEREAFTER, THE GEOFABRIC TO BE REMOVED AND LANDSCAPING WORKS TO
BE UNDERTAKEN.
3. CONTRACTOR TO LIMIT FOOT AND VEHICULAR TRAFFIC WITHIN BIORETENTION SYSTEM ONCE FILTER
MEDIA INSTALLED.
LANDSCAPING
LEGEND 1. LANDSCAPING WORKS TO OCCUR AS SOON AS POSSIBLE AFTER CIVIL WORKS. MINIMUM PLANT
DENSITY 6 (Qty/m²). REFER DAVID KEARNEY AND ASSOCIATED DRAWINGS.
PROPOSED BOUNDARY
MAINTENANCE REQUIREMENTS
PROPOSED EARTHWORKS TOP OF BATTER 1. IT IS THE CONTRACTOR'S RESPONSIBILITY TO ENSURE THE BIORETENTION BASIN IS REGULARLY
PROPOSED EARTHWORKS TOE OF BATTER INSPECTED AND MAINTAINED, DURING THE 'ON-MAINTENANCE' PERIOD.
PROPOSED BIORETENTION AREA - REFER DETAIL ON DRAWING C04.12 2. INSPECTIONS TO BE CARRIED OUT BY THE CONTRACTOR ON A REGULAR BASIS, AT LEAST EVERY
THREE MONTHS AND FOLLOWING SIGNIFICANT RAINFALL EVENTS.
3. MAINTENANCE TO INCLUDE:
PROPOSED LANDSCAPING AREA. REFER TO ARCHITECTURE DRAWING FOR - SEDIMENT AND DEBRIS REMOVAL FROM BASIN, INFLOW AREAS AND OUTLET PITS
DETAILS. - REPAIR OF SCOUR DAMAGE
PROPOSED SCOUR PROTECTION - REPLACEMENT OF DISEASED OR DAMAGED PLANTS
- VEGETATION PEST MONITORING AND CONTROL
- MAINTENANCE OF PLANTING DENSITY (6 PLANTS/M2)
PROPOSED SUBSOIL HIGH END RISER, DRAINAGE LINE AND INTERMEDIATE - REGULAR IRRIGATION OF PLANTS UNTIL WELL ESTABLISHED
RISER. REFER DETAIL SHEET - MANUAL REMOVAL OF WEEDS (HERBICIDES SHOULD NOT BE USED)
- ENSURING PERFORATED PIPES ARE NOT BLOCKED
RWB PROPOSED BLOCK RETAINING WALL - REFER DRAWING C4.04 FOR DETAILS 5. PLANTS TO BE WATERED IN ACCORDANCE WITH SUGGESTED WATERING RATES:
WEEK 1-6 5 VISITS/WEEK
PROPOSED FENCE WEEK 6-10 3 VISITS/WEEK
WEEK 11-15 2 VISITS/WEEK
EXISTING STORMWATER THE ABOVE WATERING PROGRAM SHOULD BE ADJUSTED (INCREASED)
TO SUIT THE SITE CONDITIONS
EXISTING SEWER
EXISTING OVERHEAD ELECTRICAL
EXISTING TELECOMMUNICATIONS
ENGINEER'S CERTIFICATION
This drawing has been assigned an electronic code that
signifies the drawing has been checked and approved by: 0 4 8 12m
NAME: SHANE SUFFOLK
RPEQ No: 9330 SCALE 1:200 @ A1
C COPYRIGHT of this design and plan is the property of ACOR Consultants (Qld) Pty Ltd, ACN 126 011 087 ABN 18 126 011 087, all rights reserved. It must not be used, modified, reproduced or
SIGNED: FOR APPROVAL
copied wholly or in part without written permission from ACOR Consultants (Qld) Pty Ltd. ACOR Consultants is a trademark licensed to ACOR Consultants (Qld) Pty Ltd by ACOR Consultants Pty Ltd.
Client ARCHITECT Project Drawing Title
ACOR Consultants (Qld) Pty Ltd BIO RETENTION PLAN
North WESSEL PETROLEUM LEVEL 4, 43 PEEL STR
PROPOSED BP SERVICE CENTRE
South Brisbane QLD 4101
A FOR APPROVAL 30/06/20 BVZ SS T +61 7 3844 5900 NOOSAVILLE Drawn Date Scale A1 Q.A. Check Date
P1 FOR INFORMATION 12/06/20 BVZ SS BVZ MAR 2020 51 SCALE SS -
Issue Description Date Drawn Approved MARY STR & WEYBA ROAD Designed Project No. Dwg. No. Issue
PHONE : PHONE : ENGINEERS MANAGERS INFRASTRUCTURE PLANNERS DEVELOPMENT CONSULTANTS NOOSAVILLE, QLD 4566 BVZ BR190571 C4.02 A
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