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8. Volume 5 - Stormwater Management Plan
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REFERENCE
14 JULY 2016
B16239CR002
ANDREW PEZZUTTI
Stormwater Management Plan
Noosa Energy Centre – 140-142 Eumundi Noosa Road, Noosaville
For Denmac Nominees Pty Ltd
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Page 2
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
TABLE OF CONTENTS
1.0 INTRODUCTION 1
2.0 SITE DESCRIPTION 2
3.0 STORMWATER QUANTITY 3
3.1 METHODOLOGY 3
3.2 STORM EVENTS 3
3.3 PRE DEVELOPMENT SCENARIO 4
3.4 POST DEVELOPMENT SCENARIO 5
3.5 DETENTION REQUIREMENTS 8
4.0 STORMWATER QUALITY 10
4.1 STORMWATER QUALITY OBJECTIVES 10
4.2 POTENTIAL WATER QUALITY IMPACTS 10
4.3 STORMWATER QUALITY ASSESSMENT 11
4.4 SELECTION OF STORMWATER TREATMENT TRAIN 15
4.5 STORMWATER QUALITY MODELLING RESULTS 16
5.0 MAINTENANCE 17
5.1 STORMWATER360 ENVIROPODS AND MECHANICAL FILTRATION SYSTEM 17
6.0 CONCLUSIONS AND RECOMMENDATIONS 18
Ref: B16239CR002 - i - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX A
PLAN SHOWING DETAILS OF LOT 2 ON RP173876
APPENDIX B
MASTER PLAN DA01
SITE LOCATION PLAN DA02
ELEVATIONS 01 DA03
ELEVATIONS 02 DA04
APPENDIX C
PRELIMINARY EARTHWORKS LAYOUT PLAN B16239-CSK01
PRELIMINARY SERVICES LAYOUT PLAN B16239-CSK02
DETAILS SHEET B16239-CSK03
APPENDIX D
XPSTORM HYDROGRAPHS
APPENDIX E
RATIONAL METHOD CALCULATIONS
APPENDIX F
MUSIC MODELLING RESULTS
APPENDIX G
STORMFILTER & ENVIROPOD OPERATION & MAINTENANCE MANUAL
APPENDIX H
EROSION AND SEDIMENT CONTROL CODE
Ref: B16239CR002 - ii - Stormwater Management Plan
Noosa Energy Centre - Noosaville
Page 4
LAMBERT & REHBEIN ENGINEERS , MANAGERS . SCIENTISTS Document Control Page Revision | Date Description Author | Signature | Verifier | Signature | Approver | Signature A 08/07/2016 DRAFT KH AP AP B | 14/07'2016) DASUBMISSION | KH A[/ fA | ap | | AP |e Ref: B16239CR002 - iii - Stormwater Management Plan Noosa Energy Centre - Noosaville
Page 5
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
1.0 INTRODUCTION
Lambert & Rehbein (SEQ) Pty Ltd has been commissioned by Denmac Nominees Pty Ltd to
develop a conceptual Stormwater Management Plan for the proposed Noosa Energy Centre at
140-142 Eumundi Noosa Road, Noosaville. The site is located within the Noosa Council Local
Government Area.
The proposed service station with associated shop and food outlet is illustrated on the preliminary
architectural plans DA01 to DA04 reference 16.0122.17, prepared by Thomson Adsett, enclosed
in Appendix B.
The aim of this conceptual stormwater management plan is to identify any stormwater detention
requirements and an appropriate level of stormwater quality improvement.
This report has been compiled to address the stormwater quality and quantity requirements of
Noosa Council, the Queensland Urban Drainage Manual (QUDM), the Environmental Protection
Act 1994 and the associated Environmental Protection (Water) Policy, 2009.
The Noosa Plan Erosion and Sediment Control Code has been prepared and is included in
Appendix H.
Ref: B16239CR002 - 1 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
2.0 SITE DESCRIPTION
The subject site is situated at 140-142 Eumundi Noosa Road, Noosaville on land described as
Lot 2 on RP173876. The site is bound by Eumundi Noosa Road to the south east, Project Avenue
to the north west and commercial properties to the remaining boundaries. The site is
approximately 2,428 m2 in area.
SUBJECT SITE
Source: Google Maps 2016
The site is currently occupied by a commercial premise with associated carpark at the Eumundi
Noosa Road frontage. The rear of the site is used as a carpark area and there is an access
driveway to the site from Project Avenue.
An existing site survey indicates that the site ranges in elevation from approximately RL10.8m
AHD at the Eumundi Noosa Road frontage to RL4.67m AHD in the northern rear corner of the
site at the Project Avenue frontage. Refer to Plan Showing Details of Lot 2 on RP173876
Reference 16-4187AA prepared by Max Watterson & Associates Contour enclosed in Appendix
A of this report.
Ref: B16239CR002 - 2 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
3.0 STORMWATER QUANTITY
3.1 METHODOLOGY
In order to determine the stormwater flows for the site an XPStorm model of the catchments was
developed. The development layout utilised in the modelling is as shown on the preliminary
architectural plans prepared by Thomson Adsett enclosed in Appendix B. A breakdown of the
existing and proposed catchments is presented in Table 1 below.
Table 1 Development Catchment Area
PRE DEVELOPMENT POST DEVELOPMENT
CATCHMENT A CATCHMENT B
IMPERVIOUS 990 m2 2086 m2 140 m2
PERVIOUS 1438 m2 102 m2 100 m2
TOTAL 2428 m2 2188 m2 240 m2
The impervious area of the site will increase due to the increased roof and pavement areas
compared with the existing pre development surfaces. As such there is likely to be an increase in
stormwater runoff from the developed site. Noosa Council requires that existing levels of
stormwater discharge are maintained from the proposed development site. The stormwater
detention, if required will be designed to attenuate peak flows for all design storms up to and
including a Q100 storm.
3.2 STORM EVENTS
Q1, Q2, Q5, Q10, Q20, Q50 and Q100 were modelled for the following durations:
• STORM 1 - 10 minutes; • STORM 5 – 60 minutes;
• STORM 2 - 15 minutes; • STORM 6 – 90 minutes; and
• STORM 3 - 30 minutes • STORM 7 – 120 minutes.
• STORM 4 – 45 minutes;
The above storms can be related to the output hydrographs presented in Appendices D & E.
Ref: B16239CR002 - 3 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
Page 8
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
3.3 PRE DEVELOPMENT SCENARIO
Table 2 below outlines the calculations, methodology and inputs used to undertake the pre
development hydrologic modelling in XPStorm.
Table 2 Pre Development XPStorm Inputs
Item Value Units Source / Comment
IFD Chart Noosa N/A Bureau of Meteorology
IFD Coefficients Noosa N/A Bureau of Meteorology
Zone 3 N/A AR&R, Volume 1, Book 2
Impervious Initial Loss / Continuing Loss * 2.5 / 0 mm AR&R, Volume 1, Book 5
Pervious Initial Loss / Continuing Loss * 20 / 2.5 mm AR&R, Volume 1, Book 5
Impervious Catchment Mannings 0.015 N/A Roof and Pavement
Pervious Catchment Mannings 0.035 N/A Grass
Impervious Catchment Area 0.0990 ha Contour and Detail Survey
Pervious Catchment Area 0.1438 ha Contour and Detail Survey
Vectored Slope Impervious 0.5 % Survey Plans
Vectored Slope Pervious 7 % Survey Plans
* The Initial and Continuing Loss models are within the specified Australian Rainfall and Runoff
(AR&R) ranges and have been calibrated to the results obtained from rational method
calculations.
To check the order of accuracy of the XPStorm model, rational method calculations were
completed for each storm event. The peak event was assumed to be equal to the time of
concentration for the catchment.
Table 3 overleaf shows the results of the hydrological modelling and the rational method
calculations. For further details, the XPStorm outputs are enclosed in Appendix D and the
rational method calculations are enclosed in Appendix E.
Ref: B16239CR002 - 4 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Table 3 Pre Development Peak Flow Rates
ARI (Years) Rational Method (m3/s) XPStorm (m3/s) Difference (m3/s) Difference (%)
Q1 0.051 0.047 - 0.004 - 8%
Q2 0.069 0.079 + 0.010 + 15%
Q5 0.095 0.112 + 0.017 + 18%
Q10 0.111 0.128 + 0.017 + 16%
Q20 0.132 0.150 + 0.018 + 14%
Q50 0.167 0.162 - 0.005 - 3%
Q100 0.191 0.180 - 0.011 - 6%
The order of magnitude of the XPStorm Model results correlate reasonably well for all intensity
events when compared with the rational method calculations. As such, the XPStorm Model is
considered to be satisfactory for this investigation.
3.4 POST DEVELOPMENT SCENARIO
Table 4 overleaf outlines the calculations, methodology and inputs used to undertake the post
development hydrologic modelling in XPStorm.
Ref: B16239CR002 - 5 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Table 4 Post Development XPStorm Inputs
Item Value Units Source / Comment
IFD Chart Noosa N/A Bureau of Meteorology
IFD Coefficients Noosa N/A Bureau of Meteorology
Zone 3 N/A AR&R, Volume 1, Book 2
Impervious Initial Loss / Continuing 1/0 mm AR&R, Volume 1, Book 5
Loss *
Pervious Initial Loss / Continuing Loss 10 / 1 mm AR&R, Volume 1, Book 5
*
Impervious Catchment Mannings 0.013 N/A Roof and Pavement
Pervious Catchment Mannings 0.03 N/A Landscaping/Grass
Total Impervious Catchment Area 0.2227 ha Site Layout Plan
Total Pervious Catchment Area 0.0201 ha Site Layout Plan
Impervious Vectored Slope 1.0 % Site Layout Plan
Pervious Vectored Slope 1.0 % Site Layout Plan
* The Initial and Continuing Loss models are within the specified AR&R ranges and have been
calibrated to the results obtained from rational method calculations.
The post development XPStorm model was calibrated using the rational method. Table 5 overleaf
shows the results of the hydrological modelling and the rational method calculations. For further
details, the XPStorm outputs are enclosed in Appendix D and the rational method calculations
are enclosed in Appendix E.
Ref: B16239CR002 - 6 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Table 5 Post Development Peak Flow Rates
ARI (Years) Rational Method (m3/s) XPStorm (m3/s) Difference (m3/s) Difference (%)
Q1 0.061 0.080 + 0.019 + 31%
Q2 0.083 0.103 + 0.020 + 24%
Q5 0.114 0.129 + 0.015 + 13%
Q10 0.132 0.143 + 0.011 + 8%
Q20 0.158 0.164 + 0.006 + 4%
Q50 0.196 0.178 - 0.018 - 9%
Q100 0.216 0.199 - 0.017 - 8%
The order of magnitude of the XPStorm Model results correlate reasonably well for all intensity
events when compared with the rational method calculations.
Table 6 below compares the XPStorm model results of the pre development peak flows and the
post development unmitigated peak flows.
Table 6 XPStorm Peak Flow Rates Comparison
XPStorm Post Development XPStorm Pre Increase Increase
ARI (Years)
Unmitigated (m3/s) Development (m3/s) (m3/s) (%)
Q1 0.080 0.047 + 0.033 + 70%
Q2 0.103 0.079 + 0.024 + 30%
Q5 0.129 0.112 + 0.017 + 15%
Q10 0.143 0.128 + 0.015 + 12%
Q20 0.164 0.150 + 0.014 + 9%
Q50 0.178 0.162 + 0.016 + 10%
Q100 0.199 0.180 + 0.019 + 11%
Ref: B16239CR002 - 7 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
3.5 DETENTION REQUIREMENTS
From the hydrological modelling it is evident that the development would cause an increase in the
peak stormwater flows. Therefore stormwater detention will be required to avoid adverse impacts
on downstream properties.
The stormwater detention system will attenuate all peak flows up to, and including, a Q100 storm.
Refer XPStorm outputs included in Appendix D for further details.
3.5.1 ABOVE GROUND DETENTION TANKS
The on-site detention will be provided by a detention tank located under the service station shop.
It is proposed to direct all flows from Catchment A, up to a Q100 event, to the proposed detention
tank.
Due to site levels, Catchment B bypasses the detention tank, however the tank has been
modelled to ensure the total flows leaving the site are less than pre-developed conditions.
The proposed lawful point of discharge for the stormwater is the existing gully pits located in
Project Avenue. The details for the proposed stormwater management and detention tank are
shown on the civil engineering plans enclosed in Appendix C.
The proposed details for the detention tank is shown in Table 7 below.
Table 7 Above Ground Detention Tanks Details
Q100 Max Depth (m) 1.65
Q100 Storage Volume (m3) 34
Orifice 1 Diameter(mm)/Invert Level (m) * 130Ø / 0.0
Orifice 2 Diameter(mm)/Invert Level (m) * 150Ø / 0.65
Orifice 3 Diameter(mm)/Invert Level (m) * 200Ø / 0.8
High Level Weir Length (m) / Invert Level (m) 1.6 / 1.2
*Invert level from base of tank.
With the addition of the above detention parameters to the developed site, the attenuated peak
flows are less than the pre developed conditions. The attenuated peak outflows and percentage
increase/decrease to that of the pre development flows, for each storm event, are shown below in
Table 8.
Ref: B16239CR002 - 8 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Table 8 XPStorm Peak Flow Rates Comparison
XPStorm Pre XPStorm Post Development Increase Increase
ARI (Years)
Development (m3/s) Mitigated (m3/s) (m3/s) (%)
Q1 0.047 0.047 0.000 0%
Q2 0.079 0.065 -0.014 -18%
Q5 0.112 0.085 -0.027 -24%
Q10 0.128 0.109 - 0.019 - 15%
Q20 0.150 0.136 - 0.014 - 9%
Q50 0.162 0.153 - 0.009 - 6%
Q100 0.180 0.179 - 0.001 - 1%
Ref: B16239CR002 - 9 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
[OCR of page images]
LAMBERT & REHBEIN
ENGINEERS . MANAGERS. SCIENTISTS
Table 8 XPStorm Peak Flow Rates Comparison
ARI (Years) CS) Ott AS ail Fe! Development _ Increase Titer)
Development (m/s) Tiere Ne (iE) (iE) (%)
Q1 0.047 0.047 0.000 0%
Q2 0.079 0.065 -0.014 -18%
Q5 0.112 0.085 -0.027 -24%
Q10 0.128 0.109 - 0.019 - 15%
Q20 0.150 0.136 - 0.014 - 9%
Q50 0.162 0.153 - 0.009 - 6%
Q100 0.180 0.179 - 0.001 -1%
Ref: B16239CRO02 -9- Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
4.0 STORMWATER QUALITY
4.1 STORMWATER QUALITY OBJECTIVES
In accordance with the SEQ Regional Plan Implementation Guideline No.7 for Water Sensitive
Urban Design the required operational phase Water Quality Objectives (WQOs) are provided in
Table 9 below.
Table 9 Operational Phase Water Quality Objectives:
Pollutant Pollutant Load
Reductions
Total Suspended Solids (TSS) 80%
Total Phosphorous (TP) 60%
Total Nitrogen (TN) 45%
Gross Pollutants (GP) 90%
4.2 POTENTIAL WATER QUALITY IMPACTS
4.2.1 CONSTRUCTION PHASE
Potential exists during the construction phase of development for sediment (from exposed soil
areas and stockpiles) to become mobilised by stormwater. This results in suspended solids
entering waterways. Table 10 below details the typical stormwater pollutants which may be
generated during the construction phase of a development.
Table 10 Typical Construction Phase Pollutants
Pollutant Sources
Paper, construction packaging, food packaging,
Litter
cement bags and off-cuts.
Unprotected exposed soils and stockpiles during
Sediment
earthworks and building.
Fuel and oil spills and leaks from construction
Hydrocarbons
equipment.
Cement slurry, asphalt prime, solvents, cleaning
Toxic Materials
agents and wash waters.
pH altering substances Cement slurry and wash waters.
Ref: B16239CR002 - 10 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Stormwater quality during the construction phase of the development should be addressed in an
Erosion and Sediment Control Plan. The plan should address construction phase erosion and
sediment control issues in accordance with the Institute of Engineers Australia (Qld) Erosion and
Sediment Control Guidelines. The Erosion and Sediment Control Plan should also be in
accordance with Noosa Council guidelines.
4.2.2 OPERATIONAL PHASE
During the operational phase of the development, the following impacts have been identified in
relation to stormwater runoff and water quality of the receiving waterways:
• Potential exists for gross pollutants, which include human derived litter, coarse sediment
and vegetation, to affect the drainage capacity of stormwater systems. Gross pollutants
may physically affect the downstream waterway habitats and organisms such as
entangling birds and aquatic animals. Gross pollutants are also typically unsightly and
reduce the visual amenity of the site;
• Sediment can become mobilised by stormwater as suspended solids from the erosion of
exposed soil areas, un-mulched garden beds, sediment deposited on car park and
hardstand areas by vehicles and by atmospheric deposition of sediment. Suspended
solids can be used as a transport medium resulting in nutrients and heavy metals making
their way into waterways. Suspended solids can block stormwater systems leading to
local flooding and can also affect receiving waterways physically through smothering
aquatic flora and fauna; and
• Nutrients can enter waterways in stormwater runoff through many sources including
detergents used in car washing, fertilizers from landscaping and lawn areas, nitrous
oxide deposition from vehicle exhausts, and organic waste. High nutrient levels can lead
to eutrophication of the receiving waterways resulting in algal blooms (toxic in some
cases) and excessive macrophyte growth.
Implementation of the appropriate Stormwater Quality Improvement Devices (SQIDs) would
ensure that stormwater discharge from the site would adhere to Noosa Council’s requirements
and objectives.
4.3 STORMWATER QUALITY ASSESSMENT
The potential impact and effectiveness of the proposed SQIDs was assessed using MUSIC
Version 6.1.0. MUSIC is a software tool that simulates stormwater runoff quality from different
sources and the effectiveness of SQIDs.
Ref: B16239CR002 - 11 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
Page 16
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
The MUSIC modelling program is able to simulate the quantity and quality of stormwater runoff
from catchment sizes which range from a single house lot up to 100 km2. The program is able to
report on the pollution uptake efficiencies of a wide range of treatment measures.
The model can be used to generate both pollutant concentrations and long term pollutant loads
and is recognised as the most appropriate modelling software for the planning of stormwater
treatment measures for commercial catchments.
4.3.1 GENERAL MUSIC MODELLING APPROACH
MUSIC modelling was conducted generally in accordance with the Healthy Waterways Water by
Design “MUSIC Modelling Guidelines, Version 1.0, 2010”. The MUSIC guidelines suggest that
the timestep of each model should match the time of concentration of the smallest source node
and the smallest detention time of any treatment devices. As WSUD principles are to be applied,
a six (6) minute timestep should be adopted to match the range of treatments incorporated and
the low time of concentrations expected from the catchment.
Table 11 below, details the MUSIC parameters utilised in running the model.
Table 11 MUSIC Model Hydrological Parameters
Parameter Description
Cooroy Composite -SCRC North (Stn. Number:
Meteorological Data
40059) from 1973 to 1983 inclusive
Source Node Commercial – Road, Roof, Ground
Modelling Time Step 6 minute
Drainage Link No Routing
Pollutant Concentration Commercial – Roof, Ground, Roads
Rainfall-Runoff Properties Commercial
The MUSIC model defaults of k and C* assist in the definition of treatment performance and are
based on research and judgement by academics and industry leaders assisting the eWater
Cooperative Research Centre (CRC). The k constant is used in a first order kinetic model to
simulate the removal of pollutants within the treatment system. C* values represent the
background concentrations of pollutants for end of line treatment measures. All modelling for this
study has used the default values for k and C*.
Ref: B16239CR002 - 12 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
4.3.2 DEVELOPED SITE CATCHMENTS
The intent of the stormwater quality assessment is to provide an appropriate level of stormwater
quality improvement for the proposed developed site.
A review of the proposed development displayed in the architectural plans in Appendix B was
undertaken to determine an appropriate stormwater quality modelling approach. Refer also to
catchments shown on the civil engineering plans in Appendix C.
MUSIC models the rainfall-runoff and pollutant generation processes within a source node with
unique pollutant export parameters for each different land use type. As required by the Water by
Design, MUSIC Modelling Guidelines Version 1.0 (2010), the proposed development was
modelled using a “split catchment approach”, where each surface of the development is
separated based on its land use. A breakdown of the proposed developed catchment areas is
presented in Table 12.
Table 12 Proposed Development Sub-Catchment Areas
Roof Road Ground Ground
Catchment TOTAL
(m2) (m2) (Pervious m2) Impervious m2
Catchment A 586 1351 95 141 2,173
Catchment B - 140 100 13 253
TOTALS 586 m2 1,491 m2 195 m2 154 2,426 m2
The identified sub catchments were modelled with commercial node parameters as per the
Healthy Waterways Water by Design “MUSIC Modelling Guidelines Version 1.0, 2010”. These
parameters presented in Table 13 and Table 14 overleaf.
Ref: B16239CR002 - 13 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
Table 13 MUSIC Rainfall-Runoff Parameters
Pollutant Commercial Land Use
Rainfall Threshold (mm) 1
Soil Storage Capacity (mm) 18
Initial Storage (%) 10
Field Capacity (mm) 80
Infiltration Capacity Coefficient a 243
Infiltration Capacity Exponent b 0.6
Initial Depth (mm) 50
Daily Recharge Rate (%) 0
Daily Baseflow Rate (%) 31
Daily Deep Seepage Rate (%) 0
Source: Water by Design “MUSIC Modelling Guidelines”, Version 1.0, 2010
Table 14 Pollutant Export Parameters Adopted in the MUSIC model
Pollutant Commercial Land Use
Mean Standard Deviation
Base Flow N/A N/A
Roof
Storm Flow 1.30 0.38
Total Suspended
Base Flow 0.78 0.39
Solids Road
Storm Flow 2.43 0.38
Base Flow 0.78 0.39
Ground
Storm Flow 2.16 0.38
Base Flow N/A N/A
Roof
Storm Flow -0.89 0.34
Base Flow -0.6 0.5
Total Phosphorous Road
Storm Flow -0.30 0.34
Base Flow -0.6 0.5
Ground
Storm Flow -0.39 0.34
Base Flow N/A N/A
Roof
Storm Flow 0.37 0.34
Base Flow 0.32 0.3
Total Nitrogen Road
Storm Flow 0.37 0.34
Base Flow 0.32 0.3
Ground
Storm Flow 0.37 0.34
Note: Parameters are shown as Log10 of Concentration in mg/L
Source: Water by Design “MUSIC Modelling Guidelines”, Version 1.0 2010
Ref: B16239CR002 - 14 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
4.4 SELECTION OF STORMWATER TREATMENT TRAIN
As detailed in Section 3, site runoff from Catchment A will be directed to the proposed detention
tank for attenuation. Catchment B will bypass the detention structure.
It is proposed to treat site runoff via a series of filter baskets within gully pits and filter cartridges
incorporated in the detention tank, as such, it is proposed to treat runoff from Catchment A and
Catchment B will bypass treatment.
Stormwater360, a manufacturer and supplier of mechanical filtration systems, were engaged to
size and model appropriate systems for the proposed development. The filter cartridges proposed
use the PSorb filter media, an alternative to the ZPG stormfilter. Stormwater 360 confirms that the
PSorb option requires less cartidges however this system is subject to Noosa Council approval.
The proposed treatment train requires runoff from the Catchment A road areas and paved and
landscaped areas to be pre-treated with Enviropods fitted to gully pits prior to discharging to the
detention tank for treatment via the filter cartridges. The roof areas of Catchment A will be
conveyed directly to the detention tank for treatment. Refer to MUSIC Model in Appendix F.
It should be noted, that an approved equivalent mechanical filtration system may be utilised
based on price or availability at the time of construction.
Refer to Table 15 below for the stormwater quality treatment details and the civil engineering
plans attached in Appendix C, for the conceptual treatment device locations.
The use of the filter cartridge’s is subject to Noosa Council approval.
Table 15 Stormwater Quality Treatment Device Details
Treatment Device Adopted Details
Catchment A
Stormwater360 EnviroPod (EP) Filter • 2 x EnviroPod Series 200 filter fitted to stormwater
inlet pits;
Stormwater360 StormFilter • 4-cartridge (690mm PSorb) StormFilter system - a
passive, siphon-actuated, radial flow, self-cleaning
media filtration cartridges.
Ref: B16239CR002 - 15 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
4.5 STORMWATER QUALITY MODELLING RESULTS
The predicted MUSIC pollutant concentrations are provided in Table 16.
Table 16 MUSIC Model Results
Initial Pollutant Residual Pollutant Water Quality Reduction
Concentration Concentration Objectives Achieved
Total Suspended Solids (TSS) 965 kg/yr 165 kg/yr 80% 82.9%
Total Phosphorous (TP) 1.84 kg/yr 0.645 kg/yr 60% 64.9%
Total Nitrogen (TN) 11 kg/yr 6.05 kg/yr 45% 45%
Gross Pollutants (GP) 75.6 kg/yr 5.08 kg/yr 90% 93.3%
(Refer to Appendix C for MUSIC Model Output Details).
As shown in Table 16, MUSIC predicts that the proposed treatment train will meet the SEQ
Regional Plan Implementation Guideline No.7 for Water Sensitive Urban Design water quality
objectives for key pollutants including TSS, TP, TN and GP. Copies of the model outputs are also
attached in Appendix F.
Ref: B16239CR002 - 16 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
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LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
5.0 MAINTENANCE
Listed below are the water quality maintenance protocols proposed by Lambert & Rehbein for the
Stormwater360 gross pollutant filters (EnviroPods) and mechanical filtration cartidges
(Stormfilters). Existing local authority maintenance protocols should be adhered to, in conjunction
with the suggestions in this report.
5.1 STORMWATER360 ENVIROPODS AND MECHANICAL FILTRATION
SYSTEM
The primary purpose of the stormwater treatment train is to filter out and prevent pollutants from
entering our waterways. Like any effective filtration system, periodically these pollutants must be
removed to restore the system to its full efficiency and effectiveness. Maintenance requirements
and frequency are dependent on the pollutant load characteristics of each site. Maintenance must
be performed in accordance with Stormwater360’s Operation & Maintenance Guidelines attached
in Appendix G to ensure the ongoing effectiveness of the proposed treatment devices.
Should an alternative equivalent mechanical treatment system be proposed during construction
the procedures for the ongoing maintenance of the alternative system should be provided.
Ref: B16239CR002 - 17 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
Page 22
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
6.0 CONCLUSIONS AND RECOMMENDATIONS
Lambert & Rehbein (SEQ) Pty Ltd has been commissioned by Denmac Nominees Pty Ltd to
develop a conceptual Stormwater Management Plan for a proposed Energy Centre at 140–142
Eumundi Noosa Road, Noosaville. The site is located within the Noosa Council Local
Government Area.
Based on the XPStorm modelling results for the project, the proposed detention tank detailed in
this report will satisfy Noosa Council requirements for stormwater detention by attenuating peak
flows for all design storms up to and including a Q100 storm. The required stormwater attenuation
will be provided via a detention tank located under the service station shop totalling 34m3.
Stormwater quality treatment has been provided for the site. Stormwater gully filter baskets and
filter cartridges located within the detention tank will meet the required water quality objectives.
A conceptual civil engineering plans are enclosed in Appendix C of this report to illustrate
anticipated stormwater management for the proposed development. It should be noted that these
plans are preliminary only and will be subject to confirmation during detailed design.
Lambert & Rehbein considers that the proposed stormwater detention and quality treatment
measures detailed in this report will satisfy Noosa Council stormwater management requirements
for the proposed development. Further, Lambert & Rehbein has not identified any stormwater
drainage constraints that, in our opinion, should preclude approval of the development by Noosa
Council.
Ref: B16239CR002 - 18 - Stormwater Management Plan
Noosa Energy Centre - Noosaville
Page 23
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX A
PLAN SHOWING DETAILS OF LOT 2 ON RP173876
Page 24
2
Vi
gy mo MH LEGEND,
LL3.94 STORMWATER GRATE TREES SERVICES
. A- ASH EJ - ELECTRIC JUNCTION BOX
STORMWATER MANHOLE 8-BLooDWooD FOB - HOUSE CONNECTION BRANCH
a BA- BANKSIA
88. BOTTLEBRUSH
A 2 (© _ SEWER MANHOLE Bx BOX
D - CADAGHI UL-LIDUEVEL
ci-cimeus LP-LiGHT POLE
GU-CAMPHORLAUREL —_MH-MAN HOLE
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6-cum SV_STOP VALVE
TELSTRA PIT SC: GOLDEN CANE Swe STORMWATER PIT
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1 JAGARANDA
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wy 3 bd STOP VALVE wo nae omen
‘AHO - AUSTRALIAN HEIGHT DATUM
S RP173876 @ POWER POLE a eaPeRaARK
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BS Note
> "TREES UNDER 0.3m TRUNK.
OM - UMBRELLA DIAMETER NOT LOCATED.
W-WaTTLe
X-BxOTIe
DR 8
Block Building
CP
SP106089
Block Building
LINETYPE LEGEND
— BANK BOTTOM
Libbbbbbbbbbb BANK TOP
loti titi patter
— — — —-— crow
GUTTER
------- GRAVEL
> mr — 9 — mr BITUMEN
KERB. Block Building
MAX WATTERSON
ASSOCIATES
12 Maple Street
PO Box 639
Cooroy Qld 4563
Ph. (07) 54426121
Fax. (07) 54425125
Email. [email protected]
Client: DENMAC
NOMINEES
Project:
PLAN SHOWING
DETAILS OF LOT 2
ON RP173876.
LOCAL GOVT: NOOSA S.C.
LOCALITY: NOOSAVILLE
CONCRETE
ELECTRICAL DENOTES GRAVEL
rn
&
bia
—— Ww ——_ water
DAMIPOOL
ey 1
DRAINAGE
taeeLIne RP173876
GARDEN
TELSTRA
———_ BUILDING
Se PAVING
BQRRURGG00008 RETAINING WALL
WALL
—1—1—1 11 GUARDRAIL
FENCE Scale 1:300 - Lengths are in Metres
—_—_—_—_— BDY
UAIOR CONTOUR | | | | | | | | | |
MINOR CONTOUR 3 0 3 6 9 12 15 18 21 24 27 30
DENOTES CONCRETE
DENOTES BUILDING
DENOTES BITUMEN
DENOTES PAVING
DENOTES DAMPOOL
Scale: 1:300 Plan 1 of 1
Datum: AHD Date: 3-06-16
oom us
Cont.Int: 0.6m 4 6-4 1 87AA
NOTE:
This plan has been prepared for building
design purposes only.
Underground services not located except
where evident on surface.
Page 25
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX B
MASTER PLAN DA01
SITE LOCATION PLAN DA02
ELEVATIONS 01 DA03
ELEVATIONS 02 DA04
Page 26
Telephone +61 7 3840 9999
[email protected]
128 Robertson Street
Fortitude Valley
Qld 4006 Australia
thomsonadsett.com
© Copyright
These drawings and designs and the copyright
therof are the property of Thomson Adsett Pty
Ltd and must not be used, retained or copied
without written permission of Thomson Adsett
Pty Ltd. ABN 76 105 314 654 Trading as
ThomsonAdsett. Dimensions take precedence
over scaling. Do not measure off drawings as
print sizes may vary
NOOSA ENERGY
CENTRE
DEVELOPMENT SCHEDULE
GFA CAR RATIO CARS REQ'D 140-142 EUMUNDI - NOOSA RAOD,
NOOSAVILLE, QLD 4566
SERVICE STATION & SHOP 200m² 1 / 20 10
FOOD OUTLET 90m² 1 / 10 9
TOTAL GFA 290m² TOTAL 19
TOTAL SITE AREA 2423m²
for
DENMAC NOMINEES PTY LTD
CARS 18
DISABLED SPACES 1
TOTAL CARS 19
FOOD 90m2
EXIT
FUEL CANOPY OVER
LANDSCAPING
TREE REMOVED
COLES EXPRESS
LANDSCAPING TO 202m²
200m2
DEVELOPMENT SITE
% OF DEVELOPMENT 8%
ENTRY
SITE COVERAGE TREE RETAINED
REFUSE
7 12/07/2016 UPDATE MH
6 08/07/2016 UPDATE MH
5 28/06/2016 UPDATE MH
4 16/06/2016 UPDATE MH
P:\RET\16.0122.17 - NOOSA ENERGY CENTRE\2_Design\9_Revit\16.0122.17 Noosa Energy Centre.rvt
3 15/06/2016 PRELIMINARY ISSUE MH
2 14/06/2016 UPDATE MH
1 13/06/2016 PRELIMINARY ISSUE MH
rev date details init.
drawn date
MH JUNE 2016
checked date
TH JUNE 2016
verified date
SB JUNE 2016
scale
0 5 10 15 25 m
MASTER PLAN
scale project no.
12/07/2016 2:27:55 PM
As indicated 16.0122.17
sheet no. revision
DA01 7
original sheet size - A1 (594mm x 841mm)
Page 27
DEVELOPMENT SCHEDULE
GFA CAR RATIO CARS REQ'D
SERVICE STATION & SHOP 200m² 1 / 20 10
FOOD OUTLET 90m² 1 / 10 9 Telephone +61 7 3840 9999
TOTAL GFA 290m² TOTAL 19 [email protected]
TOTAL SITE AREA 2423m² 128 Robertson Street
Fortitude Valley
Qld 4006 Australia
CARS 18 thomsonadsett.com
DISABLED SPACES 1 © Copyright
These drawings and designs and the copyright
TOTAL CARS 19 therof are the property of Thomson Adsett Pty
Ltd and must not be used, retained or copied
without written permission of Thomson Adsett
Pty Ltd. ABN 76 105 314 654 Trading as
ThomsonAdsett. Dimensions take precedence
over scaling. Do not measure off drawings as
print sizes may vary
LANDSCAPING
TREE REMOVED
LANDSCAPING TO 202m²
DEVELOPMENT SITE
NOOSA ENERGY
% OF DEVELOPMENT 8%
CENTRE
SITE COVERAGE TREE RETAINED
140-142 EUMUNDI - NOOSA RAOD,
NOOSAVILLE, QLD 4566
for
DENMAC NOMINEES PTY LTD
6000 10280 2690 5400 9000 8000 12510 5400 1030
730 840 BATTEN SCREEN
660
RL4.67 RL6.16 STAIRS TO LOWER LEVEL SITE BOUNDARY RL9.96
1260
2
DA04 2
11 1040
7870
1 EXISTING BUILDING TO
BE REMOVED
12000
FOOD OUTLET
90m2
6350
BIKE RACKS UNDER
740
4No. STAFF
SERVICES
CAR PARKS 12470
8800
RL10.50 EXIT
ROOF OVER
RL10.40
RL10.35 AIR &
WATER
DA03 4 ELECTRIC
ACCESSIBLE
CHARGE
CAR PARK BIKE FIX
RL6.00
STATION
8660
2
FUEL CANOPY OVER
RL8.56 2 DA03 1 DA03
3000
EXISTING SERVICE
STATION AND
TRANSFORMER 720 SHOP 200m2
7 12/07/2016 UPDATE MH
2 PHOTOVOLTAIC 6 08/07/2016 UPDATE MH
10500 RL10.70
6 5 28/06/2016 UPDATE MH
PANELS PYLON 4 16/06/2016 UPDATE MH
RL10.50 SIGN DA03
P:\RET\16.0122.17 - NOOSA ENERGY CENTRE\2_Design\9_Revit\16.0122.17 Noosa Energy Centre.rvt
RAIN WATER TANKS 3 15/06/2016 PRELIMINARY ISSUE MH
2 14/06/2016 UPDATE MH
1 13/06/2016 PRELIMINARY ISSUE MH
ENTRY rev date details init.
RL10.50
SITE BOUNDARY
drawn date
MH JUNE 2016
checked date
TH JUNE 2016
5600
REFUSE 2 verified date
SB JUNE 2016
DA04
RL6.73 RL7.37 scale
SITE BOUNDARY 10560 RL11.10
0 1.0 2 3 5m
SITE LOCATION PLAN
scale project no.
12/07/2016 2:28:05 PM
As indicated 16.0122.17
sheet no. revision
DA02 7
original sheet size - A1 (594mm x 841mm)
Page 28
2010 510
SETBACK
Telephone +61 7 3840 9999
1 2 5 3 1 4 2 12 11 8 [email protected]
128 Robertson Street
Fortitude Valley
Qld 4006 Australia
SITE BOUNDARY
SITE BOUNDARY
FUEL CANOPY thomsonadsett.com
850
15205
© Copyright
SERVICE STATION These drawings and designs and the copyright
ROOF therof are the property of Thomson Adsett Pty
Ltd and must not be used, retained or copied
SITE BOUNDARY
14850 without written permission of Thomson Adsett
5550
Pty Ltd. ABN 76 105 314 654 Trading as
4710
SHOPFRONT
ThomsonAdsett. Dimensions take precedence
7000
over scaling. Do not measure off drawings as
2800
print sizes may vary
GROUND
10500 NOOSA ENERGY
CENTRE
1 SOUTH EAST - ELEVATION AA
DA02
1 : 100
140-142 EUMUNDI - NOOSA RAOD,
NOOSAVILLE, QLD 4566
GROUND
10500
BATTEN SCREENING
6 7m HIGH PYLON SIGN
for
3 1 4 2 12 8 11 10 DA02
1 : 50
DENMAC NOMINEES PTY LTD
SITE BOUNDARY
SITE BOUNDARY
REFUSE STORE
FINISH MATERIAL LEGEND
SERVICE STATION
ROOF
14850
1
WHITE ALPOLIC
SHOPFRONT
2800
2
GROUND RED ALPOLIC
SITE 10500
9750
3 CONCRETE PANEL WITH EXPRESSED
2 SOUTH EAST - ELEVATION BB JOINTS PAINTED DVWHITE
DA02
1 : 100
4 MATT ANODISED
SHOPFRONT BLACK
5
SHELL YELLOW
6 BLOCKWORK
VERTICAL BATTEN
6 3 GREEN WALL
10 12 8 7 2 21 RETAINING WALL
5
4
12/07/2016
08/07/2016
UPDATE
UPDATE
MH
MH
P:\RET\16.0122.17 - NOOSA ENERGY CENTRE\2_Design\9_Revit\16.0122.17 Noosa Energy Centre.rvt
3 28/06/2016 UPDATE MH
SCREENING 2 16/06/2016 UPDATE MH
1 15/06/2016 PRELIMINARY ISSUE MH
7 HORIZONTAL METAL rev date details init.
FUEL CANOPY WALL CLADDING
15205 drawn date
MH JUNE 2016
SERVICE STATION
ROOF 8 DECORATIVE WALL SHEETING IN TENANT
SITE BOUNDARY
SITE BOUNDARY
checked date
14850 SPECIFIC COLOUR TH JUNE 2016
verified date
SB JUNE 2016
9 CONCRETE PANEL WITH EXPRESSED
JOINTS PAINTED DVWHITE scale
GROUND
10500 0 1.0 2 3 5m
10 CANTILEVER AWNINGS
3500
COLOURBOND FASCIAS - BLACK AND WHITE
STAIR BIKE RACKS WATER TANKS
LOWER GROUND ELEVATIONS 01
7000
11 GENERIC RETAIL GRAPHIC PANELS TO CREATE
ACTIVATION
scale project no.
NORTH WEST - ELEVATION 12
12/07/2016 2:31:56 PM
4
DA02
PHOTOVOLTAIC PANEL As indicated 16.0122.17
1 : 100
sheet no. revision
DA03 5
original sheet size - A1 (594mm x 841mm)
Page 29
1 2 5 8 4 12 3 10
7m HIGH PYLON SIGN NON-ILLUMINATED FASCIA Telephone +61 7 3840 9999
REFER TO DA01 [email protected]
FUEL CANOPY 128 Robertson Street
850
15205
Fortitude Valley
Qld 4006 Australia
SERVICE STATION thomsonadsett.com
SITE BOUNDARY
ROOF
SITE BOUNDARY
5550
14850 © Copyright
4710
4350
These drawings and designs and the copyright
therof are the property of Thomson Adsett Pty
STAIR Ltd and must not be used, retained or copied
without written permission of Thomson Adsett
Pty Ltd. ABN 76 105 314 654 Trading as
GREEN WALL GROUND ThomsonAdsett. Dimensions take precedence
over scaling. Do not measure off drawings as
10500 print sizes may vary
NATURAL GR
OUND LEVEL NOOSA ENERGY
LOWER GROUND
7000
CENTRE
1 NORTH EAST - ELEVATION 140-142 EUMUNDI - NOOSA RAOD,
DA02 NOOSAVILLE, QLD 4566
1 : 100
10 3 12 1 2 5 for
NON-ILLUMINATED FASCIA 7m HIGH PYLON SIGN DENMAC NOMINEES PTY LTD
REFER TO DA01
FUEL CANOPY
850
15205
SERVICE STATION
ROOF
SITE BOUNDARY
SITE BOUNDARY
5550
14850
4710
4350
GROUND
10500
UND LEVEL
RAIN WATER TANK NATURAL GRO
LOWER GROUND
7000
2 SOUTH WEST - ELEVATION
DA02
1 : 100
4 12/07/2016 UPDATE MH
P:\RET\16.0122.17 - NOOSA ENERGY CENTRE\2_Design\9_Revit\16.0122.17 Noosa Energy Centre.rvt
3 28/06/2016 UPDATE MH
2 16/06/2016 UPDATE MH
1 15/06/2016 PRELIMINARY ISSUE MH
rev date details init.
drawn date
MH JUNE 2016
checked date
TH JUNE 2016
verified date
SB JUNE 2016
scale
0 1.0 2 3 5m
ELEVATIONS 02
scale project no.
12/07/2016 2:34:42 PM
SOUTH EAST - PERSECTIVE NORTH WEST - PERSECTIVE 1 : 100 16.0122.17
sheet no. revision
DA04 4
original sheet size - A1 (594mm x 841mm)
Page 30
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX C
PRELIMINARY EARTHWORKS LAYOUT PLAN B16239-CSK01
PRELIMINARY SERVICES LAYOUT PLAN B16239-CSK02
DETAILS SHEET B16239-CSK03
Page 31
4
5
S
6
3
RP173876
7
8
Block Building
E
9
E
Transformer
-
E
---
E
WM
EJ
Ra
sp
mp
Ste
E
2
4
De
ck
E
2428m²
CP 10
5
E
SP106089
E
6
E
S
7 Block Building
E
WM
E
ps
8
Ste
S
E
E
E
9
E
Block Building
E
10
1
E
RP173876
E
11
11
E
E
LAMBERT & REHBEIN
ENGINEERS MANAGERS SCIENTISTS
Page 32
S
3
RP173876
Block Building
E
E
Transformer
-
E
---
E
WM
EJ
Ra
ps
mp
Ste
E
2 De
ck
E
2428m²
CP
E
SP106089
E
E
S
Block Building
E
WM
E
ps
Ste
S
E
E
E
E
Block Building
DETENTION
34m3
E
1 STORAGE
E
RP173876
E
E
E
LAMBERT & REHBEIN
ENGINEERS MANAGERS SCIENTISTS
Page 33
LAMBERT & REHBEIN
ENGINEERS MANAGERS SCIENTISTS
[OCR of page images]
PROPOSED =
ee eee PAVEMENT a
—TI RL 10.500
RL oe ee = =
ae ee _
KK — ——
ONION. OOOO OOOO, 7
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DETENTION & TREATMENT
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a AREA PAVEMENT SHOP
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I x v
SSS TNA
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DETENTION & TREATMENT
TANK - REFER Dwg.
LA Ly - B16239-CSK02 FOR
DATUM RL. 3 DETAILS
4:10
PROPOSED
= PAVEMENT =
PRELIMINA RY ADJACENT BUILDING a o ADJACENT BUILDING
0 SHOWN INDICATIVELY a2 a SHOWN INDICATIVELY
CONCEPT ONLY y, ONLY
DRAWING ONLY 7
= ERE KA KAKAKAKAKAKA KA KAKAKEKAKAKAKAKAKKAKKAKAKAKAKAKKAEKEEKKEKKKAKKAKKEKKEKEKXKKKKKKKKKKKKKKKKKKKKKKXKKKXXKAXQY | Z- - - -
oo , {----------------- +2 ee S
CONSTRUCTION AYE aaa
EXISTING SERVICES
NOTWITHSTANDING THAT EXISTING SERVICES MAY OR MAY NOT SECTION
BE SHOWN ON THESE DRAWINGS, NO RESPONSIBILITY IS TAKEN 0 1 2 3m
BY THE ENGINEER OR THE PRINCIPAL FOR THIS INFORMATION 1:10
WHICH HAS BEEN SUPPLIED BY OTHERS. THE DETAILS ARE
PROVIDED FOR INFORMATION ONLY. THE CONTRACTOR SHALL SCALE 1: 100
ASCERTAIN THE POSITION OF ALL UNDERGROUND SERVICES PRIOR :
TO EXCAVATION AND SHALL BE RESPONSIBLE FOR THE COST OF
REPAIRS TO DAMAGES CAUSED AS A RESULT OF THE WORKS.
Associated Consultants: R.P.D. Project: DROPOSED NOOSA ENERGY CENTRE Client:
MAX WATTERSON +ASSOCIATES Lots 2. on RP173876 2 LAMBERT & REHBEIN DENMARK NOMINEES PTY LTD
CONSULTING SURVEYORS & PLANNERS Local Govt: Noosa S.C. 140-142 EUMUNDI NOOSA ROAD,
12 MAPLE STREET PH (07) 54426121 Locality: Noosaville ~\ ENGINEERS * MANAGERS « SCIENTISTS NOOSAVILLE Draftsperson: Checked: Sheet | Drawing No.
PO BOX 639 Emai: [email protected] R.T. K.H. Size
COOROY QLD LEVEL DATUM CBD HOUSE TELEPHONE (07) 3250 9000 Title :
A.H.D. Derived B 14.07.16 S.G. FOR DA APPAROVAL LEVEL 3, 120 WICKHAM STREET FACSIMILE (07) 3250 9001 DETAILS Designer: aero Na: eee _-
Origin: PM107833 FORTITUDE VALLEY QLD 4006 EMAIL [email protected] R.T. 0
RL: 2.730 A {08-07-16 | R.T. | ORIGINAL ISSUE P.O, BOX 112 FORTITUDE VALLEY QLD 4006 *
THIS DESIGN AND DRAWING IS COPYRIGHT. NO PART OF THIS DRAWING MAY BE REPRODUCED, STORED IN A RETRIEVAL A-C.N. 010 451 902 “Ss AS SHOWN Date: JUN 2016 B
SYSTEM OR TRANSMITTED IN ANY FORM WITHOUT THE WRITTEN PERMISSION OF LAMBERT AND REHBEIN PTY LTD | No. Date By Amendment Checked
Page 34
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX D
XPSTORM HYDROGRAPHS
[OCR of page images]
LAMBERT & REHBEIN
ENGINEERS . MANAGERS. SCIENTISTS
APPENDIX D
XPSTORM HYDROGRAPHS
Page 35
XPSTORM Q1 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 36
XPSTORM Q2 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 37
XPSTORM Q5 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 38
XPSTORM Q10 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 39
XPSTORM Q20 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 40
XPSTORM Q50 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 41
XPSTORM Q100 Hydrographs Pre-Developed Post Developed – Unmitigated Post Developed – Mitigated
Page 42
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX E
RATIONAL METHOD CALCULATIONS
[OCR of page images]
LAMBERT & REHBEIN
ENGINEERS . MANAGERS. SCIENTISTS
APPENDIX E
RATIONAL METHOD CALCULATIONS
Page 43
L&R Job No.: B16239
Project Name: 140-142 Eumundi-Noosa Road, Noosaville
Date: 22/06/2016
Flow Calcs
1
Storm fi I10 tc I Atotal Q
ID Fy C10 C
Event
% mm/hr min mm/hr ha m3/s L/s
Pre Development
1 41.0 72.3 0.80 0.78 0.62 6 121.0 0.2428 0.051 51
2 41.0 72.3 0.85 0.78 0.66 6 154.0 0.2428 0.069 69
5 41.0 72.3 0.95 0.78 0.74 6 189.0 0.2428 0.095 95
10 41.0 72.3 1.00 0.78 0.78 6 210.0 0.2428 0.111 111
20 41.0 72.3 1.05 0.78 0.82 6 238.0 0.2428 0.132 132
50 41.0 72.3 1.15 0.78 0.90 6 275.0 0.2428 0.167 167
100 41.0 72.3 1.20 0.78 0.94 6 302.0 0.2428 0.191 191
Post Development
1 92.0 66.7 0.80 0.88 0.70 5 129.0 0.2428 0.061 61
2 92.0 66.7 0.85 0.88 0.75 5 164.0 0.2428 0.083 83
5 92.0 66.7 0.95 0.88 0.84 5 202.0 0.2428 0.114 114
10 92.0 66.7 1.00 0.88 0.88 5 223.0 0.2428 0.132 132
20 92.0 66.7 1.05 0.88 0.92 5 253.0 0.2428 0.158 158
50 92.0 66.7 1.15 0.88 1.00 5 291.0 0.2428 0.196 196
100 92.0 66.7 1.20 0.88 1.00 5 321.0 0.2428 0.216 216
Page 1 of 1
[OCR of page images]
L&R Job No.: B16239
Project Name: 140-142 Eumundi-Noosa Road, Noosaville
Date: 22/06/2016
Flow Calcs
1
ID nom f; ho Fy Cro c tc I Avotai
% | mm/hr min | mm/hr ha m?/s Lis
Pre Development
1 41.0 72.3 0.80] 0.78] 0.62 6] 121.0 0.2428] 0.051 51
2 41.0 72.3 0.85] 0.78] 0.66 6} 154.0 0.2428] 0.069 69
5 41.0 72.3 0.95] 0.78] 0.74 6] 189.0 0.2428] 0.095 95
10 41.0 72.3 1.00} 0.78} 0.78 6] 210.0 0.2428] 0.111 111
20 41.0 72.3 1.05] 0.78] 0.82 6] 238.0 0.2428] 0.132 132
50 41.0 72.3 1.15] 0.78] 0.90 6] 275.0 0.2428] 0.167 167
100 41.0 72.3 1.20] 0.78] 0.94 6} 302.0 0.2428] 0.191 191
Post Development
1 92.0 66.7 0.80] 0.88] _0.70 5] 129.0 0.2428] 0.061 61
2 92.0 66.7 0.85} 0.88] 0.75 5} 164.0 0.2428] 0.083 83
5 92.0 66.7 0.95} 0.88] 0.84 5] 202.0 0.2428] 0.114 114
10 92.0 66.7 1.00] 0.88] 0.88 5] 223.0 0.2428] 0.132 132
20 92.0 66.7 1.05] 0.88] 0.92 5} 253.0 0.2428] 0.158 158)
50 92.0 66.7 1.15] 0.88] 1.00 5] 291.0 0.2428] 0.196 196
100 92.0 66.7 1.20] 0.88] 1.00 5] 321.0 0.2428] 0.216 216
Page 1 of 1
Page 44
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX F
MUSIC MODELLING RESULTS
[OCR of page images]
LAMBERT & REHBEIN
ENGINEERS . MANAGERS. SCIENTISTS
APPENDIX F
MUSIC MODELLING RESULTS
Page 45
Road 1 - 1351m* (100% imp.) Paved 1 - 141m? (100% Imp.) Fuel Canopy - 258m* (100% imp.) Roof - 328m* (100% Imp.) Road 2 - 140m? (100% imp.) Paved 2 - 13m* (100% Imp.), Landscape 2 - 100m* (100% Perv.) Landscape 1 - 95m* (100% Perv.) 2.x EnviroPod 200 (SFEP USE 20118) SF Chamber 4x 690mm PSorb (MCC Brisbane) Treatment Train Effectiveness - Receiving Node B Sources ResidualLoad % Reduction Flow (ML/ yr) 3.44 3.44 0 Total Suspended Solids (kg/ yr) 965 165 82.9 Total Phosphorus (kg/ yr) 1.84 0.645 64.9 Total Nitrogen (kg/yr) il 6.05 45 Gross Pollutants (kg/ yr) 75.6 5.08 93.3 &| |
Page 46
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX G
STORMFILTER & ENVIROPOD OPERATION & MAINTENANCE MANUAL
Page 47
Operations and maintenance
StormFilter EnviroPod Treatment Train
®
Our waterways. Our future.
Page 48
Device details
Location of Device
GPS Coord N: E: D P Number:
Relevant Council
Company
Contact Email Ph
Engineer
Contact Email Ph
SFEP Treatment
1
2
Frequency of Inspection/Maintenance Maintenance Estimated Annual Cost
Inspections Major StormFilter
(time/year) Maintenance
EnviroPod
StormFilter
TOTAL
EnviroPod
Contents The Stormwater Management StormFilter 17
1.1 Description 18
1.2 Operation 18
Treatment Train Specifications 2
1.2.1 Purpose 18
Introduction 4
1.2.2 Sizing 18
Why cleaning and maintenance are so vitally important 4
StormFilter overview 18
Health and safety 5
1.2.3 Basic function 19
2.1 Personnel health and safety 6
1.2.4 Priming system function 19
2.2 Traffic control 7
1.2.5 Maintenance overview 19
2.3 Confined spaces 7
StormFilter maintenance and
3.1 Maintenance and monitoring of EnviroPod filters 8
performance expectations 20
Operations 8
2.1 Types of maintenance 21
3.2 Stormwater pit cover removal 9
2.2 Maintenance activities 22
3.2.1 Hinged pit grates 9
2.2.1 Maintenance activity timing 22
3.2.2 Non-hinged pit grates 10
2.2.2 Maintenance activity frequency 22
3.3 Cleaning methods 11
2.3 Maintenance crew requirements 22
3.3.1 Cleaning using an inductor truck 11
2.4 Maintenance methods 23
3.3.2 Hand maintenance 11
2.4.1 Minor maintenance/inspection (twice a year) 23
3.4 Unit inspection 14
2.4.2 Major maintenance inspection (once a year) 24
3.5 Filter bag inspection and rejuvenation 14
2.4.3 Major maintenance: sediment removal and
3.5.1 Clogged filters 14 cartridge replacement (and emergency) 24
3.5.2 Damaged filters 15 2.4.4 Related maintenance activities
3.6 Disposal of material 15 (performed on an as-needed basis) 26
4.1 Spill procedures 16 2.5 Typical equipment required for
4.2 Blockages 16 maintenance activities 26
Emergency procedures 16 2.6 Material Disposal 27
Next steps 30
[OCR of page images]
Device details
Location of Device
GPS Coord N:
D P Number:
Relevant Council
Company
Contact Email Ph
Engineer
Contact Email Ph
SFEP Treatment
Frequency of Inspection/Maintenance
Inspections
(time/year)
Major
Maintenance
StormFilter
EnviroPod
Contents
Treatment Train Specifications 2
Introduction 4
Why cleaning and maintenance are so vitally important 4
Health and safety 5
24 Personnel health and safety 6
2.2 Traffic control 7
2.3. Confined spaces 7
34 Maintenance and monitoring of EnviroPod filters 8
Operations 8
3.2 Stormwater pit cover removal 9
3.2.1 Hinged pit grates 9
3.2.2 Non-hinged pit grates 10
3.3. Cleaning methods a
3.3.1. Cleaning using an inductor truck a
3.3.2 Hand maintenance an]
3.4 Unit inspection 14
3.5 — Filter bag inspection and rejuvenation 14
3.5.1 Clogged filters 14
3.5.2 Damaged filters 15
3.6 Disposal of material 15
4A Spill procedures 16
4.2 Blockages 16
Emergency procedures 16
Maintenance Estimated Annual Cost
StormFilter
EnviroPod
TOTAL
The Stormwater Management StormFilter
14
1.2
1.24
1.2.2
Description
Operation
Purpose
Sizing
StormFilter overview
1.2.3
1.2.4
1.2.5
Basic function
Priming system function
Maintenance overview
StormFilter maintenance and
performance expectations
24
2.2
2.24
2.2.2
2.3
24
244
2.4.2
2.4.3
2.4.4
2.5
2.6
Types of maintenance
Maintenance activities
Maintenance activity timing
Maintenance activity frequency
Maintenance crew requirements
Maintenance methods
Minor maintenance/inspection (twice a year)
Major maintenance inspection (once a year)
Major maintenance: sediment removal and
cartridge replacement (and emergency)
Related maintenance activities
(performed on an as-needed basis)
Typical equipment required for
maintenance activities
Material Disposal
Next steps
Page 49
Maintaining the EnviroPod ®
Stormwater Gully Pit Insert
Maintenance is as integral to every stormwater management
system as it is to any other item of machinery or equipment.
The primary purpose of the EnviroPod® Stormwater Gully Pit
insert is to filter out and remove pollutants from entering
our waterways. To ensure that the EnviroPod® continues
to function effectively, it is important that the pollutants
it captures are periodically removed, and the filtration
components properly cleaned.
Maintenance requirements and frequency are dependent
on the pollutant load characteristics of each site, as well
as the occurrence of events such as chemical spills or
excessive sediment loading due to site erosion or extreme
storms. Similarly, the system should be inspected after all
major storm events.
Stormwater360 Operations and maintenance 1
Page 50
Treatment Train
Specifications
Regardless of the system type, the media filtration system
Performance Specification shall consist of the following components;
The stormwater filtration treatment train shall consist • Inlet energy dissipation
of x 200 micron gully pit basket/s and x • Cartridge section
460/690mm passive, siphon-actuated, radial flow, self • Outlet section to bypass storm flows and convey
cleaning media filtration cartridge system/s operating at a treated stormwater
specific flow rate of not more than 1.5L/s/m2.
• Access Lids in roof slab for access to Cartridges
• Siphon actuated cartridges filled with proprietary
The gully pit basket system shall consist of the
ZPG™ filter media
following components;
• Specific flow rate of each individual cartridge limited
• Removable 200 micron Nylon monofilament Precision
not to exceed 1.5L/s/m2
woven Filtration Bag
• Air Lock Cap complete with one way Air Valve Flap
• Fixed Galvanised Mesh Cage (no greater than 80mm x
• Outer Hood complete with Scrubbing Regulators
80mm) around the Filtration Bag
• Automated high-energy turbulence on the screen face
• Recycled modified ABS plastic to seal the unit into the pit
(only) at the end of storm flows to flush pollutants from
• By-pass mechanism above the Filter with no moving parts
the cartridge
• System rigidly fixed to the walls of the pit.
• Centre Drainage Tube complete with Buoyancy Float
The media filtration system shall be located within the • Individual Cartridge Flow Restrictor Disc
following structure.
• ¼ Turn Bayonet Fittings
• Manhole • Under drain manifold to convey treated stormwater to
• DownPipe the receiving environment.
• Linear
• Vault
• Large Box
• Detention.
2 Stormwater360 Operations and maintenance
Page 51
Components of any
proposes treatment
train or technology
The components of any proposed the treatment train Maintenance Overview
or technology, including a gully pit basket upstream
of a radial flow cartridge filtration system, must The primary purpose of the Stormwater Treatment Train is to
be evaluated for a range of pollutants and these filter out and prevent pollutants from entering our waterways.
Like any effective filtration system, periodically these
performance expectations must comply with current
pollutants must be removed to restore the system to its full
best practice guidelines, i.e. Water by Design "MUSIC efficiency and effectiveness.
Modeling Guidelines version 1.0 2010" for South
East Queensland.
aintenance requirements and frequency are
M
In short, the performance evaluation of any system dependent on the pollutant load characteristics
must show: of each site. Maintenance must be performed
in accordance with the Treatment Trains
1 Any reduction efficiencies are justified by rigorous
Operation and Maintenance Guidelines.
scientific testing as determined by an independent
peer reviewer and the results further peer reviewed and
published in a credible scientific journal. Any potential
or perceived conflicts of interest should be disclosed
within the published article.
2 Published article providing insight into the pollutant
composition (e.g. soluble vs particulate for nitrogen)
and the mean concentration of inflow and outflow to
compare to local and or regional conditions.
3 Performance evaluation undertaken in dry weather
conditions or a method to take into account any
potential leaching of nutrients that may occur in
the system(s).
4 Evaluation is conducted using full-scale systems
with details of treatable flow rates sampled and how
they correlate to discrete removal efficiencies and
comparisons to the designed treatable flow rates of
the device. A comparison should also be made to the
climatic conditions especially where un-restricted filters
are used.
Stormwater360 Operations and maintenance 3
Page 52
Introduction
This manual has been designed to assist you with cleaning
and maintaining the EnviroPod Stormwater Gully Pit Insert,
Why cleaning and maintenance are
using the methods recommended by the manufacturer. so vitally important
The cleaning process and methods described cover all
aspects of the system, including: Adhering to the inspection and maintenance schedule of
each stormwater treatment device is essential to ensuring
• Removing the grate
that it works properly throughout its estimated design life.
• Cleaning the filter bag
During each inspection and clean, details of the mass,
• Inspecting the unit
volume and type of material that has been collected
• Rejuvenating the filter bag by the device should be recorded. This data will assist
• Re-installing the filter bags. with the revision of future management plans and help
determine maintenance interval frequency. It’s also
The manual should be used in conjunction with your
essential that qualified and experienced personnel carry
site’s traffic management and safety plans, as well as
out all maintenance (including inspections, recording and
other appropriate Stormwater360 (IES) documents such
reporting) in a systematic manner. To ensure consistency, we
as the IES Employee Health and Safety Manual. We also
recommend that one person be responsible for overseeing
recommend that maintenance and cleaning contractors, or
the management of the maintenance and cleaning process.
device owners, develop their own site-specific health and
safety activity plans to ensure a safe work environment. Maintenance of your stormwater management system is
essential to ensuring ongoing at-source control of stormwater
pollution. Maintenance also helps prevent structural failures
Please note: This manual consists primarily of (e.g. prevents blocked outlets) and aesthetic failures (e.g.
the processes and tasks associated with the debris build up).
hand maintenance and inductor maintenance
procedures. It does not include details of the
site’s traffic management or occupational health
and safety requirements. Contractors or IES
staff should utilise their own Employee Health
and Safety Manual, which details the policies
and procedures for safe work.
4 Stormwater360 Operations and maintenance
Page 53
Health and safety
The EnviroPod has been designed to trap and
retain pollutants in stormwater runoff, helping he procedures indicated in the Operations
T
section of this manual are recommended as the
to maintain the quality of water entering our
safest and most efficient manner of conducting
aquatic ecosystems. Depending on the nature the maintenance of EnviroPod units (Section 2),
of your site, pollutants can range from organic however contractors and cleaning staff may
material such as leaves and sticks through to vary the procedure in response to the site
conditions; varying work practices; or general
debris such as broken glass, syringes or other
preferences in the cleaning techniques. Please
potentially harmful materials. note that procedures outlined in this manual
are not exhaustive, and that any changes
Access to gully pits containing EnviroPods may made should always comply with general safe
require removing heavy protective grates, work practices.
while cleaning such pits may entail working in
confined spaces. For these reasons, all aspects
Cleaning of EnviroPod filters and StormFilters is a specialist
of maintaining and cleaning your EnviroPod
activity. The material collected by the devices can be
require careful adherence to Occupational harmful, and needs to be handled correctly. For example,
Health and Safety (OH&S) guidelines. Doing so sediments may contain heavy metals and carcinogenic
will ensure that all maintenance personnel are substances as well as harmful objects such as broken
glass and syringes. It is essential that Occupational Safety
adequately protected and have been properly
and Health guidelines are followed at all times, and that the
trained before taking part in any specialist following steps are carried out to ensure safe and successful
activities. The same level of care needs to be maintenance operations.
taken to protect non-work personnel in and In addition to the dangers associated with the cleaning and
around the site, while appropriate traffic control handling of material in the filter bags, precaution needs
measures must be put in place where collection to be taken with activities such as removing the grate as
pits are situated in, or adjacent to, roadways or well as with managing the traffic, pedestrians and other non-
worker personnel at the site. The general workplace hazards
car parks. associated with working outdoors also need to be taken
into account..
Stormwater360 Operations and maintenance 5
Page 54
2.1 Personnel health and safety
All contractors and staff must comply with all current While cleaning and maintaining filters, all relevant precautions
workplace health and safety legislation and take all practicable must be taken to prevent contact with sediment and litter.
steps to: This includes wearing the following personal protective and
safety equipment:
• Comply with all applicable laws, regulations and standards
• Ensure that all employees, contractors and visitors are • Puncture resistant gloves
informed of and understand their obligations in respect of • Steel capped safety boots
current workplace health and safety legislation • Fluorescent safety vest
• Ensure that employees understand and accept their • Overalls or similar skin protection
responsibility to practice and promote a safe and healthy
• Safety apron (if necessary)*
work environment.
• Eye protection (if necessary)*.
* Higher personal safety conditions may be required when maintaining units
ake proper care. Pollutants can range from
T that may contain more hazardous material, for example pits where syringes
have been observed or pits located in areas associated with such activities.
organic materials such as leaves and sticks
through to debris such as broken glass,
syringes or other potentially harmful materials.
6 Stormwater360 Operations and maintenance
Page 55
2.2 Traffic control 2.3 Confined spaces
Stormwater collection pits are typically situated either in or on Confined space entry procedures are not included as part
roads and car parks, or adjacent to roads in a footpath or swale. of this manual. For IES employees these procedures are
Traffic control requirements across all such locations differ included as part of the IES Safety Manual. It is recommended
with most of the state and local road authorities requiring the that all contractors evaluate their own needs for confined
same controls to be implemented whether the work is to be space entry and compliance with Occupational Health and
conducted on the road or on the road reserve. Safety regulations.
As traffic requirements differ depending on road usage and When repairs or maintenance activities cannot be conducted
the specific road configuration, separate traffic control plans from the surface, and there is a need to enter and work in a
should be prepared for each site. Given that maintenance is confined space, only staff with current confined space training
typically a quick process, the contractor should liaise with the are permitted to operate in a confined space. Appropriate
relevant road authority to determine the specific road safety measures and controls must be put in place to meet confined
requirements for each location to ensure that on site workers space entry requirements. At all times the necessary
can conduct the cleaning operations safely and efficiently, safety equipment must be worn, and where gas or oxygen
while complying with all laws and regulations. hazards occur, only staff trained in its use will use breathing
apparatus gear. Non-trained staff must not go into
State government publications such as the NSW RMS
confined spaces.
Traffic Control at Work Sites safety manual outline the
signage requirements, placement of barricades or witches hats
and the positioning of traffic control personnel that’s required
when working on public roads. For increased safety, IES onfined spaces pose a serious safety hazard
C
recommends that the maintenance vehicle be used to shield for all personnel; however during the normal
the work area from oncoming traffic. maintenance procedures there should be no
reason to enter a confined space and all
Photo 1 shows the maintenance vehicle with cones placed maintenance procedures are able to be
around and positioned to shield the work area. Photo 2 shows conducted from the surface.
the head-on view, note the vehicle is positioned to allow
access to the drive, whilst still blocking the pit from on-coming
traffic. The vehicle has a flashing light on the roof and the
hazard lights switched on.
Photo 1 Vehicle positioned near pit, preventing traffic from Photo 2 Head-on view, indicating the placement of the
passing close to the pit. vehicle near the pit.
Stormwater360 Operations and maintenance 7
Page 56
Operations
nviroPod units need to be regularly inspected
E This section outlines the procedures for cleaning the
EnviroPod units. It has been written so that someone who
to determine whether they require maintenance
has never previously encountered a stormwater pit or an
or cleaning. This process involves several steps, EnviroPod unit can carry out such maintenance by simply
and may require two or more maintenance following the outlined steps.
personnel working together, as well the use of
specialised equipment such as a hydraulic lifting
arm or an inductor truck with a vacuum hose. 3.1 Maintenance and monitoring of
EnviroPod filters
As gully pit grates are usually quite heavy, it is
important that correct lifting procedures are adopted, To ensure that each EnviroPod unit achieves optimal
performance, the material collected by the filter bag should
and that the area surrounding the opened pit is
be emptied when the level of material is no more than
shielded from access to non-work personnel. approximately half to two thirds of the total bag depth or
when there is evidence of material overflow. While the bag has
If inspection reveals that the filter bag needs to be a greater storage capacity, it is recommended that it is not left
emptied and rejuvenated, the entire unit should also to fill completely prior to emptying, for the following reasons:
be examined to ensure that all connections and joints • the bags are capable of retaining a heavy mass of material
are sound. Any material that has accumulated in the (in excess of 50kg), which will make them more difficult to
lift and empty
overflow diversion channels or outlet pipes also needs
• material near the top of the bag can be re-suspended
to be removed, with those areas then being flushed.
during high to extreme rainfall events
Where required, filter bags may need to be cleaned
• blockage of the overflow sections can occur, when
or repaired, and all waste material must be disposed material is allowed to build up above the filter bag.
of according to local guidelines at either an approved
It is also recommended that additional monitoring is
disposal site or transfer station. conducted following moderate to extreme rainfall events,
especially when preceding months have had little or no
rainfall. This increased frequency of monitoring is necessary
as there is a greater accumulation of surface contamination
during low rainfall periods, which will then enter the unit with
the higher volumes of runoff generated during a major rainfall
event. It is also important to ensure that the units have not
been damaged due to high pipe velocities.
8 Stormwater360 Operations and maintenance
Page 57
3.2 Stormwater pit cover removal
3.2.1 Hinged pit grates
These are the steps for opening a hinged pit grate:
Please note: Many cast iron hinges are not hinged
1 Insert the lifting hooks beneath the grate.
securely (to enable the removal of the grate). This
(Position indicated in Photo 3)
may result in the pit grate not being able to sit in an
2 Check hinge point is not damaged and debris is not open position. Additionally the hinge pins may also
caught in the hinge area. be damaged or corroded, which may allow the
grate to fall into the pit. Such pit grates can be
3 Fully open pit grate, ensuring that the grate will stay in
removed using the method indicated below for
the open position without any external forces applied.
non-hinged grates.
Grates that do not remain open without being held
should be removed or secured during cleaning or
maintenance activities. Photo 4 indicates the grate being
opened and grate resting freely in the open position,
respectively.
Photo 3 Lifting the grate Photo 4 Fully open grate
Photo 5 Lowering grate
Stormwater360 Operations and maintenance 9
Page 58
3.2.2 Non-hinged pit grates
To remove a non-hinged pit grate:
1 Place lifting hooks beneath grate, where possible in the
four corners of the grate (see Photo 6). Concrete lids
may have Gatic lifting points, a key arrangement or holes
in the lid, which may require special equipment such as
Gatic lifters
2 Position each person either side of the grate
(see Photo 7)
3 Lift the grate, ensuring that good heavy lifting posture is
used at all times
4 Place the grate on an angle on the gutter, to allow for the
lifting hooks to be removed (see Photo 8)
Photo 6 Insert hook near edge of grate
5 For extremely heavy one-piece grates and concrete Gatic
covers, insert the lifters in place and slide the lids back.
Note some lids may still require two people
Photo 7 Position each lifter either side of the grate Photo 8 Lift grate and move grate to one side
Photo 9 Lift grate above the support frame Photo 10 Reinstated non hinged grate
10 Stormwater360 Operations and Maintenance
Page 59
3.3 Cleaning methods
One of the following maintenance methods should be used for servicing EnviroPod Filters:
3.3.1 Cleaning using an inductor truck 3.3.2 Hand maintenance
Follow these steps to safely and efficiently clean the To clean the EnviroPod manually by hand, follow
EnviroPod using an inductor truck: these steps:
1 Open gully pit (See Section 3.2) 1 Open gully pit (See Section 1)
2 Place the inductor hose over the material collected in the 2 Place the lifting hooks in the lifting loops of the filter bag
filter bag and switch on the inductor (See Photo 12)
3 Using the inductor hose, suck out all of the sediment, 3 For extremely heavy and overfilled bags either use a
organic leaf material, litter etc. collected in the filter bag hydraulic lifting arm to lift the bag, or remove excess
material using a shovel or similar piece of equipment.
4 Allow the filter bag to be sucked up into the inductor
IES prefers the use of a post hole shovel, due to the
hose for a few seconds to allow for the filter mesh
reduced strain on the back when digging and the ability
pores to be cleaned. Care is to be taken that there are
of the shovel to grab material vertically
no sharp edges on the inductor hose that can damage
the filter bag 4 Lift the bag vertically off the supporting frame, ensuring
that no undue pressure is placed on the filter bag.
5 If material has built up around the overflows, use the
(See Photo 13)
inductor hose to clear the accumulated material
5 Lift the bag clear of the stormwater pit (See Photo 14)
6 Remove filter bag from the pit
6 Position the bag over the truck or other collection
7 Sediment retained in the gully pit grate is to be removed
vehicle, taking hold of the loops at the base of the bag
8 Back-opening channels are to be cleared of any debris (See Photo 15 and Photo 16)
to ensure flow is not hindered. This debris can also be
7 Lift and empty the filter bag by holding the bottom
collected using the inductor truck
lifting loops only (See Photo 17)
9 All gully pit waste is to be removed from the pit
8 Completely empty the filter bag (See Photo 18)
10 Check the EnviroPod unit (Section 3.4)
9 Brush the filter bag with a stiff brush to remove bound
11 Check filter bag (Section 3.4) sediment from the filter pores
12 Reinstate filter bag and gully pit lids 10 Check the EnviroPod unit (Section 3.4)
11 Check the filter bag (Section 3.5)
12 Reinstate filter bag, ensuring bag is installed the correct
way (See Photo 19 and Photo 20)
13 Reinstate gully pit lids (See Photo 21 and Photo 22)
Photo 11 Cleaning an EnviroPod using the inductor method
Stormwater360 Operations and Maintenance 11
Page 60
Photo 12 Place the lifting hooks through the bag loops Photo 13 Lift the bag from the cage and support frame Photo 14 Lift the bag from the stormwater pit Photo 15 Lift the bag onto the collection vehicle Photo 16 Grab the bottom lifting loops Photo 17 Lifting the bottom bag loops empty the filter bag 12 Stormwater360 Operations and maintenance
Page 61
Photo 18 Completely empty the contents of the filter bag Photo 19 Reinstall filter bag
Photo 20 Ensure that the unit is positioned correctly, Photo 21 Correctly installed filter bag
with the lifting loops on the inside
Please note: Under no circumstances are
gully pit sediments to be backwashed into
the gully pit.
Photo 22 Installed filter bag and sealed pit
Stormwater360 Operations and maintenance 13
Page 62
Photo 23 Check seals are pushed against the pit walls Photo 24 Check joining rivets (two piece unit shown above)
3.4 Unit inspection 3.5 Filter bag inspection
After the EnviroPod filter bag has been removed, emptied
and rejuvenation
and cleaned, the following should be checked to ensure that
the unit has not been damaged: After the filter bags have been emptied and cleaned, they
should be inspected to evaluate their condition. Given the
• All connections and joints should be checked and broken nature of stormwater, the filter bag may become considerably
rivets replaced (See Photo 23) clogged with fine sediment or damaged by various objects
• The plastic pit seals should be inspected for unit in stormwater as well as fauna. Sharp material such as sticks,
movement or damage (See Photo 24) combined with high velocity water and a large mass in the
• The cage should be inspected for damage or movement. filter bag, can cause small tears in the filter material. Animals
such as rats have also been known to chew through fine mesh
The overflow diversion channels, and the area between the
filter bags located in gully pits near takeaway food outlets.
EnviroPod cage and pit wall should also be inspected for any
accumulated debris. Any observed debris should be removed
and disposed of off-site. Accumulated material within the 3.5.1 Clogged filters
outlet pipe may also need to be flushed.
Clogged filter bags can be cleaned using several different
If spare parts are required, Stormwater360 is able to provide methods. If the techniques described in the general
these at a cost to the owner of the EnviroPod unit, although maintenance sections above do not adequately clean the filter
these parts may also be obtained from other suppliers. bags, the following options should be considered:
• Using a stiff brush and a bucket of soapy water, scrub the
filter bag surface.
Please note: If the units are not cleaned
• Remove filter bags from the pit and wash the bags using a
regularly, the mobilisation of material collected
high pressure water spray, taking care not to transfer the
in the EnviroPod unit may occur. As such,
contamination elsewhere. Wastewater from the process
cleaning of the units in accordance with this
should be collected and disposed of correctly.
management plan is required. As this plan is
based on observations and data collected • Remove the filter bags from the pits and the support rings
during the monitoring period, ongoing and wash the bags in an industrial washing machine.
adjustment of the cleaning frequency is This final option typically results in the bags appearing
generally required to improve the overall like new, with no visible stain or pore clogging within the
efficiency in the removal of collected material filter mesh.
and prevent material overflow.
14 Stormwater360 Operations and maintenance
Page 63
Photo 25 Slightly clogged filter bag, indicated by the brown Photo 26 A clean used filter bag
stain on in the centre of the bag
3.5.2 Damaged filters 3.6 Disposal of material
Damaged filter bags can often be repaired, provided the All gully pit wastes are to be taken off site and disposed
damage is small. Small tears in the fabric may occur due to of at a transfer station or similar approved disposal site.
several reasons, however the overall strength and structure Stormwater sediments can contain lead, copper, zinc,
of the nylon fabric typically prevents small tears becoming mercury, hydrocarbons and PCBs, which are harmful to
much larger. Although the bag is unlikely to tear further, care both humans and the receiving environment. Appropriate
must be used when cleaning torn bags so as not to spill the sampling and laboratory analysis may be required to
collected material into the pit. classify the material as suitable for reuse, or disposal under
Small tears may be repaired by either sewing the tear back appropriate local guidelines.
together with additional fabric to increase the strength of the
stitching, or by sewing a patch of the filter material onto the
filter bag. If large tears are present, the filter bag may need to
be replaced as it is no longer able to function as intended.
Stormwater360 Operations and maintenance 15
Page 64
Emergency procedures
Spills and blockages can have an immediate impact on 4.2 Blockages
the performance of a stormwater management system,
and can potentially result in serious damage to built In the unlikely event of surface flooding around a gully pit
infrastructure as well as the surrounding waterways fitted with an EnviroPod the following steps should be
carried out:
and wetlands.
1 Check EnviroPod overflow bypass. The EnviroPod filter
has been designed with an overflow mechanism built
In these types of emergencies, it is important to act
into the filter box. If surface flooding still exists, check
quickly to remediate the problem by removing affected the overflow slots underneath the rubber seal. If debris
sediment or clearing the cause of the blockage, so is lodged in the overflow slots it can be easily cleared by
that the system can resume normal and effective hand or a steel rod.
functioning as soon as possible. 2 If overflow is clear and surface flooding still exists remove
EnviroPod and check outlet pipe for blockages.
Removal of the EnviroPod may be difficult if the filter is
4.1 Spill procedures 3
clogged and the EnviroPod is holding water. If the filter
is clogged, brush the sidewalls of the filter with a yard
In the event of a spill discharging into any gully pit, all broom or similar. This will dislodge particles trapped
sediment is to be extracted and the filter bags are to at the interface allowing contained water to flow
be removed and replaced with rejuvenated filter bags. through the filter.
Normal operation procedures apply to additional cleaning
as a result of spills. 4 If the outlet pipe is blocked, it is likely that a gully
sucker truck will be required to unblock it. Debris
should be removed from the EnviroPod with the gully
sucker truck before removal of the EnviroPod filter. If
a gully sucker truck is not available and the EnviroPod
needs to be removed by hand, follow the steps below:
a Remove excess debris by hand or brush the side
of the filter.
b Lift and place filter ring through the filter box and
into cage.
c Remove Filter box.
d Lift cage containing filter bag and ring out of the pit.
e Unblock outlet pipe.
16 Stormwater360 Operations and maintenance
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The Stormwater
Management StormFilter
®
For almost two decades the Stormwater Management
StormFilter ® has helped meet the most stringent stormwater
quality requirements.
The system has been continually tested and refined, to
ensure it achieves maximum reliability and performance.
As a best management practice (BMP) system, it removes the
most challenging target pollutants – including fine solids,
soluble heavy metals, oils and total nutrients (including
soluble) – by using a variety of media to achieve site-specific
pollutant removal objectives.
Stormwater360 Operations and maintenance 17
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StormFilter overview ®
1.1 Description 1.2.2 Sizing
The StormFilter is typically sized to meet design water quality
StormFilter is a passive, flow-through stormwater filtration
objectives, which are subject to legislation regulated by local
system consisting of vaults that house rechargeable
government authorities and other relevant environmental
cartridges filled with a variety of filter media, and is installed
bodies. MUSIC modelling software is used to determine
in-line with storm drains. The StormFilter works by passing
pollutant loads from a site, influenced by a number of factors
stormwater through media-filled cartridges, which trap
such as site area, imperviousness and land use. Pollutant
particulates and adsorb materials such as dissolved metals
load reduction capabilities, based on third party testing,
and hydrocarbons. After being filtered through the media,
allows the number of StormFilter cartridges required to
the treated stormwater flows into a collection pipe or
achieve the relevant objectives to be established. Cartridges
discharges into an open channel drainage way. StormFilter
are designed to treat a peak flow between 0.7 and 1.6 litres/
is offered in three different configurations: cast-in-place,
second, depending on the cartridge size used. For example,
precast and linear. The precast and linear models utilise
10 standard sized cartridges (460mm) are able to treat 11
pre-manufactured vaults. The cast-in-place units are
L/s, as each filter can treat 1.1 L/s.
customised for larger flows and may be either covered or
uncovered underground units. Because of the highly porous nature of the granular filter
media, the flow through a newly installed cartridge is restricted
to 1 L/s (average 460mm), using a restrictor disc, to ensure
1.2 Operation adequate pollutant-media contact time.
1.2.1 Purpose
The StormFilter is a passive stormwater filtration system
designed to improve the quality of stormwater runoff from
the urban environment before it enters receiving waterways.
Through independent third party studies, it has been
demonstrated that the StormFilter is highly effective for
treatment of first flush flows, and fast-paced flows, during
the latter part of a storm. In general, StormFilter’s efficiency
is highest when pollutant concentrations are highest.
The primary target pollutants for removal are: sediments
(TSS), soluble metals, soluble phosphorus, nitrates, and
oil and grease.
Photo 27 Filter cartridge
18 Stormwater360 Operations and maintenance
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1.2.3 Basic function 1.2.5 Maintenance overview
The StormFilter is designed to siphon stormwater runoff The primary purpose of the StormFilter is to filter out and
through a filter cartridge containing media. The variety of prevent pollutants from entering our waterways. Like any
media available can be designed to act as a mechanical effective filtration system, these pollutants must be removed
filter to remove sediments, as an ion exchanger to remove periodically to restore the StormFilter to its full efficiency and
dissolved heavy metals, and as an absorber to remove oils effectiveness. Maintenance requirements and frequency are
and greases. dependent on the pollutant load characteristics of each site.
To assist the owner with maintenance issues, Stormwater360
provides detailed Operation and Maintenance Guidelines with
1.2.4 Priming system function
each unit.
The treated stormwater collects in the centre tube of the Stormwater360 can provide maintenance services completely,
cartridge, which is equipped with a self-priming siphon or in part. Available services include tracking of installed
system. (Figure 1 illustrates this system.) The key component systems, advising the system’s owner of maintenance needs,
of the system is the plastic float, consisting of a ball located and notification of the regulatory agency once the system has
at the base leading up to a larger portion, which provides been maintained.
increased buoyancy. Initially the ball rests in a seat,
Maintenance is usually performed in the dryer periods
effectively closing off the port to the drainage manifold.
to rejuvenate the filter media and prepare the system for
As a result, the filter fills the centre drainage tube until the the next rainy period. Maintenance activities can also
water level has risen high enough to purge the air from the be required in the event of a chemical spill or excessive
filter cartridges and displaces the float. At a water depth of sediment loading due to site erosion or extreme storms.
22 inches the float pulls loose and allows the filtered water It is good practice to inspect the system after severe
to drain out through the manifold. This effectively “primes” storm events.
a siphon within the drainage tube and greatly increases the
potential across the filter. The priming system increases
StormFilter’s ability to be loaded with sediment. A related AIR LOCK CAP WITH CHECK VALVE
LIFTING TAB
feature is the cartridge “hood”. This hood maintains the FLOAT VALVE
siphon effect by preventing air from being drawn into the
cartridge until the external water level drops below the OUTER MESH
FILTER MEDIA
bottom of the hood.
HOOD
CENTER TUBE
Cartridges are connected to the manifold with a plastic
SCRUBBING REGULATOR
connector. These can be either quarter turn connectors or in
the older systems, threaded connectors. UNFILTERED WATER
UNFILTERED WATER
StormFilter is also equipped with flow spreaders that trap UNDER- DRAIN
FILTERED WATER
MANIFOLD
floating debris and surface films, even during overflow
conditions. Depending on individual site characteristics, FILTERED
WATER
some systems are equipped with high and/or low flow
bypasses. High flow bypasses are installed when the UNDER-DRAIN MANIFOLD
VAULT FLOOR
CAST INTO VAULT FLOOR
calculated peak storm event generates a flow that
overcomes the overflow capacity of the system. This is Figure 1 Filter cartridge
especially important for precast systems. Low flow bypasses
are sometimes installed to bypass continuous inflows
caused by ground water seepage, which usually do not
require treatment. All StormFilter units are designed with
an overflow. The overflow operates when the inflow rate is
greater than the infiltration capacity of the filter media.
Stormwater360 Operations and maintenance 19
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StormFilter maintenance ®
and performance
expectations
To ensure the optimal and ongoing performance of the While some maintenance activities can be completed
by hand, others require specialised equipment such as
StormFilter, the system requires systematic inspection,
an inductor truck with a vacuum hose. In all cases, it is
cleaning and maintenance. This maintenance important that maintenance staff are properly trained
regime falls into two categories – ongoing minor in the functioning of the StormFilter system and have a
inspection and maintenance, and major cleaning and good knowledge of the correct procedures for disposing
contaminated sediment as well as the methods for removing
maintenance. The maintenance frequency is largely
and installing StormFilter media cartridges.
determined by the conditions of each site, and the
At all times, appropriate safety equipment must be used, and
amount of sedimentation in the stormwater runoff
Occupational Health And Safety (OH&S) guidelines adhered to.
that flows through the system. Unexpected events
such as chemical spills, erosion or extreme storm
activity require immediate inspection of the system,
together with removal of debris or contaminated
sediment, and where appropriate, replacement of the
media cartridges.
20 Stormwater360 Operations and maintenance
Page 69
2.1 Types of maintenance
Presently, procedures have been developed for two levels Inspection/minor maintenance typically involves opening
of maintenance: the flow restricting valves (to pre-set levels) and cleaning up
vegetation and debris. Major maintenance typically includes
• Inspection and/or minor maintenance
cartridge recharging. Major maintenance may involve disposal
• Major maintenance. of materials that require consideration of regulatory guidelines.
Inspection/minor maintenance activities are combined since Depending on the particular unit configuration and equipment
the minor maintenance does not require special equipment used, major maintenance may require an understanding
and typically little or no materials are in need of disposal. of OSHA rules. Table 1 summarises the primary activities
associated with StormFilter maintenance.
Table 1: StormFilter
Facility component Maintenance activity When maintenance Expected facility performance
requiring maintenance activity is required after maintaining
StormFilter cartridges Litter and Floatable objects or other litter Permanent removal from
and containment structure debris removal is present in the filter. Remove storm system.
to avoid hindrance of filtration
and eliminate unsightly debris
and litter.
StormFilter cartridges Cartridge replacement Media has been contaminated New media is able to effectively
and containment structure and sediment removal by high levels of pollutants, treat stormwater.
such as after a spill.
Drainage system piping Flushing with water Drainage system is obstructed Outflow is not restricted.
by debris or sediment.
Stormwater360 Operations and maintenance 21
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2.2 Maintenance activities 2.2.2 Maintenance activity frequency
The primary factor controlling timing of maintenance for the
StormFilter is sedimentation. A properly functioning system
2.2.1 Maintenance activity timing will remove solids from water by trapping these particulates
within the porous structure of the media. The flow through
Two scheduled inspections/maintenance activities should take
the system will naturally decrease as more and more solids
place during the year. During the minor maintenance activities
are trapped. Eventually the flow through a system will be
(routine inspection, debris removal), the type of major
low enough to require replacement of the cartridges. Sediment
maintenance required is determined and, if required for
should be removed from upstream trapping devices on an
disposal, samples of the sediments and media are obtained.
as-needed basis to prevent material from being re-suspended
The next scheduled date is to perform major maintenance and discharged to the system.
activities (replacement of the filter cartridges and associated
Site conditions greatly influence maintenance requirements.
sediment removal). In addition to the scheduled activities, it
StormFilter units located in areas with erosion or active
is important to check the condition of the filter after major
construction should be inspected and maintained more
storms to check for damage caused by high flows and to
often than those in fully established areas. The maintenance
check for high sediment accumulation, which may be caused
frequency may be adjusted as additional monitoring
by localised erosion in the drainage area. It may be necessary
information becomes available during the inspection program.
to adjust maintenance activity scheduling depending on the
Areas that develop known problems should be inspected
actual operating conditions encountered by the system.
more frequently than areas that demonstrate no problems,
particularly after large storms. Ultimately, inspection and
maintenance activities should be scheduled based on the
historic records and characteristics of an individual filter.
2.3 Maintenance crew requirements
Table 2 lists the anticipated crew requirements for applicable occupational health and safety (OH&S) and disposal
maintenance operations. Removal of water and sediments regulations should be followed. A general description of the
during major maintenance activities can be accomplished maintenance activities follows.
using either a pump and water truck or a vacuum truck. All
Table 2 Anticipated Crew Requirements
Inspection/Minor Major Maintenance: Major Maintenance:
Maintenance Sediment Removal Cartridge Replacement
Labourer 1 1
Skilled Worker 1 1 1
Vacuum/Water Truck Operator 1 0/1
Total 2* 2* 2/3*
Special Requirements Knowledge of Proper Knowledge of Knowledge of Cartridge Removal
StormFilter Function Disposal Requirements and Installation Procedures
* May require OH&S trained person if/when vault entry occurs.
22 Stormwater360 Operations and maintenance
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2.4 Maintenance methods
2.4.1 Minor maintenance/inspection (twice a year)
Minor maintenance typically will involve the steps below, however if it appears that a spill of some type has occurred, the local hazard
control agency and Stormwater360 should be notified immediately.
Steps for Minor Maintenance/Inspection
1 Maintenance to be performed by a skilled worker familiar 6 Take notes about the external and internal condition. This
with StormFilter units. includes inspecting pit penetrations, walls, lids, ladders
and grates etc.
2 If applicable, set up safety equipment to protect
pedestrians from fall hazards presented by open access 7 Give particular attention to recording the level of
covers. Also set up appropriate safety equipment for sediment build-up on the floor of the vault and on top
work near roadways. of the internal components. If flow is occurring, note the
level of water and estimate the flow rate per drainage
3 Inspect the external condition of the unit and take notes
pipe. Record all observations.
concerning defects/problems.
8 Remove large loose debris and litter using a pole with a
4 Open the access covers to the vault and allow the system
grapple or net on the end.
to air out for 5-10 minutes.
9 Close and fasten the access cover, and remove
5 Without entering the vault, inspect the inside of the
safety equipment.
unit, including components.
10 Finally, make notes about the local drainage area relative
to ongoing construction, erosion problems, or high
loadings of other materials to the system.
In the case of a spill, workers should abort
maintenance activities until the proper guidance
has been obtained.
Stormwater360 Operations and maintenance 23
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2.4.2 Major maintenance inspection 2.4.3 Major maintenance: sediment
(once a year) removal and cartridge replacement
(and emergency)
The primary goal of the major maintenance inspection is
to assess the condition of the cartridges relative to the Major maintenance/filter cartridge replacement typically
level of sediment loading. It may be desirable to conduct involves the steps below. However, if it appears that a spill
this inspection during a storm to observe the relative flow of some type has occurred, the local hazard control agency
through the filter cartridges. If the submerged cartridges and Stormwater360 should be notified immediately. In the
are severely plugged, large amounts of sediments should case of a spill, the worker should abort maintenance
be present and very little flow will be discharging from activities until the proper guidance has been obtained.
the drainage pipes. It is likely that the cartridges need to
Depending on the configuration of the particular system, a
be replaced. Major maintenance inspection will typically
worker may be required to enter the vault to perform some
involve the steps below. However, if it appears that a spill of
tasks. If vault entry is required, OH&S rules for general
some type has occurred, the local hazard control agency
confined space entry must be strictly adhered to. Filter
and Stormwater360 should be notified immediately. In the
cartridge replacement should occur during dry weather
case of a spill, the worker should abort maintenance
and it may be necessary to plug the filter inlet pipe if base
activities until the proper guidance has been obtained.
flows exist. Standing water present in the vault should be
Steps for Pre-Major Maintenance Inspection regarded as polluted and contained during this operation by
temporarily capping the manifold connectors.
1 Maintenance to be performed by a skilled worker
familiar with StormFilter units.
2 If applicable, set up safety equipment to protect
Please note: Confined space entry may be
pedestrians from fall hazards presented by open
required on StormFilter systems. In this case,
doors. Also, set up appropriate safety equipment for
please ensure that appropriate Confined Space
work near roadways.
entry training and subsequent certification has
3 Inspect the external condition of the unit and take been undertaken and is valid, and work
notes concerning defects/problems. procedures are strictly adhered to. If you are
unsure, do not enter the vault and contact
4 Open the access covers to the vault and allow the vault to
Stormwater360 immediately.
air out for 5-10 minutes.
5 Without entering the vault, give the inside of the unit,
including components, a general condition inspection.
6 Take notes about the external and internal condition.
7 Give particular attention to recording the level of
sediment build-up on the floor of the vault, and on top
of the internal components.
8 Remove large loose debris and litter using a pole with a
grapple or net on the end.
9 If the visit is during a storm, make the flow observations
discussed above.
10 Close and fasten the access cover, and remove
safety equipment.
11 Make notes about the local drainage area relative to
ongoing construction, erosion problems, or high loading
of other materials to the system.
12 Review the condition reports from the previous
minor and major maintenance visits and schedule for
cartridge replacement if needed.
24 Stormwater360 Operations and maintenance
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Steps For Cartridge Replacement Maintenance
1 Depending on the particular unit, one or two utility 14 Using the appropriate lifting cap, attach the cable and
workers and a hauling truck operator will deliver remove the cartridge (up to 10kgs. each) from the
the replacement cartridges to the site. Information vault. It is strictly prohibited to have personnel standing
concerning how to obtain the replacement cartridges is under suspended cartridges. Care must also be used
available from Stormwater360. to avoid damaging the cartridges during removal
and installation. The cost of repairing components
2 If applicable, set up safety equipment to protect
damaged during maintenance will be the responsibility
pedestrians from fall hazards presented by open
of the owner unless Stormwater360 is performing
doors. Also, set up appropriate safety equipment for
maintenance activities and damage is not related to
work near roadways.
discharges to the system.
3 Inspect the external condition of the unit and take
15 Set the used cartridge aside or load onto the
notes concerning defects/problems.
hauling truck.
4 Open the doors to the vault and allow the system to air
16 Repeat steps 14 to 15 until all cartridges have
out for 5-10 minutes.
been removed.
5 Without entering the vault, give the inside of the unit,
17 Remove deposited sediment from the floor of the vault.
including components, a general condition inspection.
This can be accomplished by using the vacuum truck
6 Make notes about the external and internal condition.
18 Once the sediments are removed, it is necessary
7 Give particular attention to recording the level of to assess the condition of the vault, particularly
sediment build-up on the floor of the vault and on top the manifold and the connectors. These are short
of the internal components. sections of 2-inch schedule 50 PVC, or threaded
Ensuring safe working procedures are met, off load the schedule 80 PVC that should protrude above the floor
8
replacement cartridges (16-39kgs each) and set aside. of the vault. If required, apply a light coating of FDA
approved silicon grease to the outside of the exposed
9 Remove the top cap (threaded), upper seal and portion of the connectors. This ensures a watertight
float from the cartridge. Repeat procedure for every connection between the cartridge and the drainage
cartridge within StormFilter vault. Place items in a large pipe. Replace any damaged connectors.
plastic container to be lifted form the vault.
19 Using the boom, crane, or tripod, lower and install
10 Using a cordless drill and 8mm hex head, remove the new cartridges (typically 30kg for standard
the three screws located around the top perimeter of 460 cartridges). Once again, take care not to
the cartridge hood. Place screws in the large plastic damage connectors.
container and, once full or completed, remove plastic
container from vault. 20 Close and fasten the access cover, and remove
safety equipment.
11 Move the vacuum truck near the StormFilter vault
on the down-wind side. Be sure that the truck is not 21 Make notes about the local drainage area relative
too close to the vault so that fumes will not enter the to ongoing construction, erosion problems, or high
vault. Make sure that the last 500mm of the nozzle is loadings of other materials to the system.
approximately 100-125mm in outside diameter. 22 Finally, dispose of the residual materials in accordance
Feed vacuum nozzle into cartridge bay and start with applicable regulations. Make arrangements to
12
vacuum truck. Remove cartridge hood and place return the used cartridges to Stormwater360.
nozzle directly onto filter media. Completely remove
media from each cartridge and repeat process for
every cartridge in vault.
13 Once completed disconnect cartridges from vault floor
and place hood back on cartridges
Stormwater360 Operations and maintenance 25
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2.4.4 Related maintenance activities (performed on an as-needed basis)
StormFilter units are often just one of many components in components be properly maintained. The maintenance/
a more comprehensive stormwater drainage and treatment repair of upstream facilities should be carried out prior to
system. The entire system may include catch basins, detention StormFilter maintenance activities. In addition to considering
vaults, sedimentation vaults and manholes, detention/ upstream facilities, it is also important to correct any problems
retention ponds, swales, artificial wetlands, and other identified in the drainage area. Drainage area concerns may
miscellaneous components. In order for maintenance of the include: erosion problems, heavy oil and grease loading, and
StormFilter to be successful, it is imperative that all other discharges of inappropriate materials.
2.5 Typical equipment required for maintenance activities
Typical equipment required for conducting maintenance is with available labour and equipment resources may desire
shown in Table 3. Some of the materials listed are suggestions to use alternative methods. However, it is advisable that
rather than requirements. It should be noted that there guidance from Stormwater360 be obtained prior to using
is more than one way to accomplish some tasks. Owners alternative techniques.
Table 3 Maintenance Equipment Requirements
Maintenance equipment required
Minor maintenance Pre-major maintenance inspection Major maintenance cartridge replacement
• Safety equipment*: First aid, • Safety equipment*: First aid, • Safety equipment*: First aid, cones, barricades,
cones, barricades, flagging, cones, barricades, flagging, flares, flagging, flares, tape, vests, hard hats
flares, tape, vests, hard hats tape, vests, hard hats • Work clothes: Rubber boots, overalls, and gloves
• Work clothes: Rubber • Work clothes: Rubber boots, • Door bolt, wrench, Pentasocket and
boots, overalls, and gloves overalls, and gloves miscellaneous Tools
• Door bolt, wrench, • Door bolt, wrench, proprietary • Tape measure
proprietary lifters (e.g. Gatic) lifters (e.g. Gatic) and
• Flashlight
and miscellaneous Tools miscellaneous Tools
• Grapple or net pole
• Tape measure • Tape measure
• Record keeping forms
• Flashlight • Flashlight
• Vacuum truck
• Grapple or net pole • Grapple or net pole
• Replacement cartridges
• Record keeping forms • Record keeping forms
• Cartridge hauling truck
• Litter/debris container • Litter/debris container
• Crane, tripod and hoist, or other lifting device
(150kg minimum capacity)
• Shovels
• Extra 50mm PVC cartridge connectors
• Spare flow restrictor discs
• Litter/debris container
• Vault inlet pipe plug
• Dolly
• PVC Pipe cutter
• Ladder
• Cartridge installation and removal sling
*Confined space equipment may be required for vault entry. This equipment must be used by personnel with the appropriate OH&S training. This equipment typically
includes: Atmospheric testing devices, atmospheric purging and ventilating devices, and entry, exit, and rescue assisting devices.
26 Stormwater360 Operations and maintenance
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2.6 Material Disposal
The accumulated sediment found in stormwater treatment
and conveyance systems must be handled and disposed of
in a manner that will not allow the material to affect surface
or ground water. It is possible for sediments to contain
measurable concentrations of heavy metals and organic
chemicals (such as pesticides and petroleum products). Areas
with the greatest potential for high pollutant loading include
industrial areas and heavily travelled roads. Sediments and
water must be disposed of in accordance with all applicable
waste disposal regulations.
It is not appropriate to discharge these materials back to
the stormwater drainage system. Part of arranging for
maintenance to occur should include coordination of disposal
of solids (landfill coordination) and liquids (municipal vacuum
truck decant facility, local wastewater treatment plant,
on-site treatment and discharge). Owners should contact
the local public works department and inquire about how
the department disposes of their street waste residuals.
Stormwater360 will determine disposal methods or reuse of
the media contained in the cartridges. If the material has been
contaminated with any unusual substance, the cost of special
handling and disposal will be the responsibility of the owner.
Stormwater360 Operations and maintenance 27
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A U S T R A L I A SFEP StormFilter & Enviropod Maintenance Data Sheet Date: Location: GPS COORD: System size: Type: Cast-in-place Precast Linear Number of Cartridges: Type of Cartridge: 460mm 690mm 310mm Filter Media: ZPG Perlite Type of EnviroPods: Number of EnviroPods: Personnel: STORMFILTER SYSTEM OBSERVATIONS Last service: Sediment Depth on Vault Floor: Structural Damage: Cartridges submerged: Yes No How deep: Comments: ENVIROPOD SYSTEM OBSERVATIONS Last service: Amount of Sediment in Basket: Structural Damage: Comments: DRAINAGE AREA REPORT Excessive Oil and Grease Loading Yes No Source: Sediment Accumulation on Pavement Yes No Source: Erosion of Landscaped Areas Yes No Source: Comments: STORMFILTER CARTRIDGE MAINTENANCE ACTIVITIES Remove Litter and Debris Yes No Details: Sediment Removed from Vault Floor Yes No Details: Quantity of Sediment Removed (estimate?): Replace Cartridges Yes No Details: Minor Structural Repairs Yes No Details: Residuals (debris, sediment) Disposal Methods: Notes/Problems: ENVIROPOD MAINTENANCE ACTIVITIES Number of Bags Replaced: Clogged EnviroPods/Bags: Yes No Comments:
Page 77
A U S T R A L I A SFEP Treatment Train Inspection Data Sheet It may be desirable to conduct this inspection during a storm to observe the relative flow through the filter cartridges. If the sub- merged cartridges are severely plugged, large amounts of sediments should be present, very little flow will be discharging from the drainage pipes, and it is likely that the cartridges need to be replaced during major maintenance. Date: Location: GPS COORD: System size: Type: Cast-in-place Precast Linear Number of Cartridges: Type of Cartridge: 460mm 690mm 310mm Filter Media: ZPG Perlite Type of EnviroPods: Number of EnviroPods: Personnel Attending Inspection: STORMFILTER SYSTEM OBSERVATIONS Last service: Sediment Depth on Vault Floor: Structural Damage: Cartridges submerged: Yes No How deep: Comments: ENVIROPOD SYSTEM OBSERVATIONS Last service: Amount of Sediment in Basket: Structural Damage: Comments: DRAINAGE AREA REPORT Excessive Oil and Grease Loading Yes No Source: Sediment Accumulation on Pavement Yes No Source: Erosion of Landscaped Areas Yes No Source: Comments:
Page 78
Next steps Learn more For more detailed technical information about Stormwater360 products and solutions, visit www.stormwater360.com.au Connect with us With more than 12 years experience in developing, installing and maintaining innovative and efficient site-specific stormwater management solutions, Stormwater360’s highly qualified engineers and consultants can assist you with every aspect of your stormwater project. Whether it’s an initial in-house technical presentation, a request to inspect and clean your existing facility, or assistance with designing a specific stormwater management solution for your site, simply complete the enquiry form at stormwater360.com.au or call 1300 354 722 to speak to a Stormwater360 consultant. Start a project If you are ready to begin a project, our engineering team will provide you with everything you need, from a free preliminary design to MUSIC modelling, CAD drawings to maintenance frequency and associated costs schedules. To find out more, simply visit www.stormwater360.com.au/custom-solutions and complete the Design Information Request form.
Page 79
©2013 Stormwater360 Australia Nothing in this catalogue should be construed as an expressed warranty or an implied warranty of merchantability or fitness for any particular purpose. See the Stormwater360 Australia standard quotation or acknowledgement for applicable warranties and other terms and conditions of sale. The product(s) described may be protected by one or more of the following US, Australian and New Zealand patents: 5,322,629; 5,624,576; 5,707,527; 5,759,415; 5,788,848; 5,985,157; 6,027,639; 6,350,374; 6,406,218; 6,641,720; 6,511,595; 6,649,048; 6,991,114; 6,998,038; 7,186,058; 705,778; 711,957; 326,257; 332,517; 780521; 336761; 299114 or other patents pending. Stormwater Management StormFilter is a licensed trademark of Stormwater360 Australia.
Page 80
Stormwater360 supplies and maintains a complete range of filtration, hydrodynamic separation, screening and oil/water separation technologies. Call 1300 354 722 www.stormwater360.com.au
Page 81
LAMBERT & REHBEIN
ENGINEERS • MANAGERS • SCIENTISTS
APPENDIX H
EROSION AND SEDIMENT CONTROL CODE
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EROSION AND SEDIMENT CONTROL CODE
SPECIFIC OUTCOMES PROBABLE SOLUTIONS RESPONSE
14.125 Effects of works
Erosion and sediment control S1.1
O1 Site disturbance is limited to building Erosion and sediment control
areas, their surrounds and other use measures will be implemented during
Development minimises erosion and areas; construction.
transport of sediments off-site.
AND Details will be provided at the
detailed design phase.
S1.2
Sediment barriers are provided
throughout and downslope of
disturbed areas to prevent sediment
washing into gutters, drains and
watercourses either on or off the site;
AND
S1.3
All stockpiles including sand, soil or
building materials are within the
premises and contained within
individual sediment barriers;
AND
S1.4
Sediment basins are provided where
the site contains fine or dispersive
soils;
OR
S1.5
A stormwater catchpit incorporating a
stormwater catchpit protection device
is installed so that all runoff from
disturbed areas flows to the catchpit;
AND
S1.6 For buildings,
(a) temporary or permanent
downpipes are connected to the
stormwater system before laying
i
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SPECIFIC OUTCOMES PROBABLE SOLUTIONS RESPONSE
the roof; or
(b) localised erosion is avoided by
directing flow from downpipes
over non-erosive areas.
Stormwater runoff S2.1 Erosion and sediment control
measures will be implemented during
O2 Diversion drains or bunds are construction.
designed and constructed to drain
Stormwater is diverted around upstream run-off around the Details will be provided at the
disturbed areas. disturbed site; detailed design phase.
AND
S2.2 Discharge from the diversion
drains do not cause run-off impacts
to other properties;
OR
S2.3
Alternative methods, as described in
the Institution of Engineers Australia
(Queensland Division) Soil Erosion
and Sediment Control - Guidelines
for Queensland Construction Sites,
are used.
ii