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LATE RFI Attachment 6 - Stormwater Management Plan
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Log in to see the plans as drawn HOLISTIC
STORMWATER & WASTE WATER
MANAGEMENT PLAN
PROPOSED CAR WASH
&
TAKE AWAY FOOD & DRINK OUTLET
SUBJECT SITE:
34 ELM STREET,
COOROY, QLD, 4563
LOT 4 - 6 of RP 72698
CLIENT:
CHRIS KING & JOANNE HILL
DATE:
TH
11 MAY 2023
JOB NO:
20-032 CIV- REV B
A.B.N. 811 428 67 114
PO Box 3494, Mornington, Vic, 3934
Tel: 0416 114 573
[email protected]
www.tmcdesign.com.au
In conjunction with
CMG Consulting Engineers
PO Box 5901, Cairns, QLD, 4870
Tel: (07) 4031 2775
[email protected]
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Full text of pages 2 to 53 (of 119)
Page 2
CONTENTS
1. PROPOSAL OVERVIEW ...................................................................................... 3
2. EXISTING SITE CONDITIONS ............................................................................. 4
3. EXISTING LOCAL AREA DRAINAGE PATTERNS ............................................... 5
4. STORMWATER MANAGAMENT ........................................................................ 6
4.1. Pre/Post Developed Site Run-Off Co-Efficients .................................. 6
4.2. Roof Stormwater Harvesting ................................................................ 7
4.3. Overall Developed Site Music Model ................................................... 9
4.4. Site WSUD Treatment Measures.........................................................10
4.4.1. SPELBasin .......................................................................................11
4.4.2. SPEL Hydrochannel ....................................................................... 12
4.4.3. SPEL Stormsack ..............................................................................13
5. WASTE WATER MANAGEMENT SYSTEM .......................................................14
5.1. Existing Site Conditions ........................................................................ 14
5.2. Car Wash Waste Water Treatment System .......................................... 15
5.3. Car Wash Water Use Model ................................................................... 16
5.4. Expected Car Wash Site Patronage And Sewer Discharge ................13
5.5. Estimated Annual Site Patronage ........................................................16
5.6. Annual Mains Water Usage & Sewer Discharge With/Without
Recycling Compared. ......................................................................................16
6. CAR WASH STORMWATER POLLUTION CALCULATOR...........................................18
7. CONCLUSION ................................................................................................... 21
APPENDIX A: SPEL Stormsack
APPENDIX B: SPELBasin
APPENDIX C: SPEL Hydrochannel
APPENDIX D: Car Wash Recycle Unit
APPENDIX E: Australian Car Wash Association-
Stormwater Statement/Environmental Policy
-2- TMC Building Design Group
Page 3
1. PROPOSAL OVERVIEW
TMC Building Design Group (in conjunction with CMG Consulting Engineers Pty Ltd) has been
engaged by Chris King & Joanne Hill to prepare a holistic Stormwater and Waste Water
Management Plan for the proposed Car Wash and Take Away Food & Drink Outlet at 34 Elm
Street in Cooroy.
The proposed new development building and works consists of:
1. Two (2) Automatic Car Wash bays,
2. Two (2) Self-Serve Wash Bays,
3. Two (2) Super Bays,
4. Three (3) Vacuum bays,
5. Two (2) Dog Washes,
6. A Plant Room, Secure Storage and Store Room with staff amenities,
7. Fenced Bin area,
8. Stand-alone Take Away Food and Drink Outlet with attached Disabled Public Toilet,
9. Suitable landscaping and seated area.
This report will investigate the full water cycle management for the site including;
A. Stormwater Management,
i. Compare Pre-Developed Site -v- Post-Developed Site runoff coefficients,
ii. Model Stormwater harvesting from roofed areas,
iii. Overall developed site Music Model,
iv. Overall developed site water quality improvement systems to be adopted.
B. Waste Water Management,
i. Expected Car Wash and Dog Wash site patronage,
ii. Mains Water usage and Sewer discharge with and without recycling equipment,
iii. Customer Average Weekday, Peak Weekend, Flagship Event site daily patronage,
iv. Compare Annual Mains Water usage and sewer discharge with and without
recycling.
C. Cooroy & LGA Car Wash Stormwater Pollution Calculator.
i. Current conditions- Pre- proposed Car Wash development,
ii. Future conditions- Post- proposed Car Wash development.
-3- TMC Building Design Group
Page 4
2. EXISTING SITE CONDITIONS
The original site (prior to demolition) was the “Cooroy Motel & Caravan Park”. The site had a
combination of permanent buildings, stand-alone cabins/caravans, with bitumen/concrete
driveway areas forming a loop through the site. Refer Figure 1 for an aerial image.
Subject Site
Figure 1: Original Site Aerial Image (pre-demolition works), Source Google Earth.
-4- TMC Building Design Group
Page 5
3. EXISTING LOCAL AREA DRAINAGE PATTERNS The subject site has a 1.2M slope from the north-western corner (the corner of Elm Street and Diamond Lane- high side) to the south-eastern corner of the subject site on Opal Street (low side). As seen in Figure 2; The subject site is located along a ridge line in the local catchment area- being that the overland flow from the railway line falls towards the site, but then splits to travel down Opal Street (and through the properties to the south) or travels to the north and down Tewantin Road/Diamond Lane (and through the properties further north). Run-off from the existing Motel/Caravan site was by both downpipes/driveway pits into an underground piped stormwater system that connected into the existing underground piped stormwater network. Landscaped areas also drained from the site as overland sheet flow, exiting the site via the driveway onto Opal Street (south-east corner) or along Diamond Lane (along the northern boundary). Local underground stormwater infrastructure exists along Opal Street, commencing at the corner with Elm Street. It is proposed to connect the subject site’s new underground stormwater discharge point into the existing stormwater drainage pipe/pit near the proposed site entry driveway near the south-eastern corner of the site on Opal Street. Figure 2: Site Contour Plan (Source: Noosa Shire Council- IntraMaps, Dated: 27th Spet 2022) -5- TMC Building Design Group
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4. STORMWATER MANAGAMENT A holistic site approach has been adopted for the design of the stormwater, stormwater harvesting and on-site retention use (via the car washing process), stormwater quality treatment and site stormwater discharge. A Commercial Car Wash use is a rare use that can use a lot of mains water if not designed correctly. However, it is because of this water demand that the Car Wash use also has the ability to make great use of any captured rainwater (ie: harvested and retained stormwater) and draw down on this stored water quickly which maximises the chances of the underground retention tanks being able to store the design storm event volume effectively with a small chance of overflow even for the largest of storm events. The overall site will have the stormwater comply with the following requirements: 1. Noosa Shire Council- Noosa Plan 2020 requirements and standard drawings, 2. Queensland Urban Drainage Manual (QDUM), 3. Department of Transport and Main Roads Road Drainage manual, 4. AS/NZS 3500.3 – Plumbing and Drainage, Part 3: Stormwater Drainage. Refer to the attached plan, Sh: C1, Revision B- which depicts the Preliminary Stormwater Layout Plan. This plan shows the locations of the proposed down pipes from roofed areas, their connection into the underground storage retention tanks, all driveway stormwater pits and associated pipework, the water quality treatment devices and the final LPD connection into the existing stormwater pipe via a new Manhole in accordance with Council’s standard details. 4.1. PRE/POST DEVELOPED SITE RUN-OFF CO-EFFICIENTS The existing overall subject site has an overall site area of 2,014 M2. The overall area of the developed site will be reduced by a 2.0 M width along the full northern boundary due to the requested road widening on Diamond Lane. This area of 80.4 M2 shall be deducted from the effective site area. There is a 2.0M wide footpath area between the Super Bays and the adjoining property (Bowls Club) to the east of the site which totals 96.6 M2. This area shall also be deducted from the effective site area. This yields an effective overall site area of 1,837 M2 that shall be designed for. The pre-existing motel, cabins and bitumen impermeable areas occupied 1,414 M2 of the effective site area (ie: only the impermeable areas inside the effective site area have been included). This yields an existing overall site impermeable coverage of 77%. This results in a pre- existing site run-off co-efficient of 0.85 over the effective area of 1,837 M2. The post-developed site has a total of 845 M2 of roofed area being directly connected into the 2 No. 20,000 L underground Retention tanks for re-use onsite. These tanks have been oversized (the calculated capacity has been doubled from 20,000L to 40,000L which will also cater for future Climate Change effects) to cater for the 1% EAP design storm event, these tanks will not contribute to the overall site stormwater discharge. Hence, this roofed area has been removed from the overall site run-off co-efficient calculation. Other areas include; non-roofed landscaped areas total of 228 M2, and driveway/paved non-roofed impermeable areas total 764 M2. This results in a post-development site run-off co-efficient of 0.46 over the effective area of 1,837 M2. This fact alone assures that the post-developed site will have a greatly reduced overall site stormwater volume and peak flow discharge than the pre-developed site regardless of the storm event and storm duration. -6- TMC Building Design Group
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4.2. ROOF STORMWATER HARVESTING In order to calculate the optimal size of the underground retention tank/s and the volume of stormwater that actually falls onto the roofed areas; a review of the Bureau of Meteorology (BOM) historical daily rainfall data is undertaken, refer Figure 3 + 4 below. These tables identify that over the past 26 years the mean number of days per year that equal or exceed 25mm of daily rainfall is 17.7 days. The site retention tanks have been designed to cater for double this at 50mm of daily rainfall, which will total 40 kL minimum of water storage. Figure 3; BOM Climate Statistics for the closest weather station- Tewantin RSL Park. -7- TMC Building Design Group
Page 8
Figure 4; BOM Detailed Rainfall Statistics for the closest weather station- Tewantin RSL Park. Additional modelling during the construction documentation stage will help refine this retention storage volume, regardless of the result a minimum 40 kL of retention rainwater storage volume will be provided. -8- TMC Building Design Group
Page 9
4.3. OVERALL DEVELOPED SITE MUSIC MODEL The overall proposed preliminary stormwater design for the site has been conducted in accordance with the Noosa Plan 2020, Part 9.4.8 Water Quality and Drainage Code. The resultant treatment train is shown in Figure 5 below. This MUSIC (Model for Urban Stormwater Improvement Conceptualisation) Model below. Figure 5; MUSIC Stormwater Treatment Train and Effectiveness Model This MUSIC model, the Proposed Preliminary Stormwater Site Layout Plan and this report shows compliance (meets or betters the minimum design requirements) with the required Performance Outcomes of the Stormwater Drainage Design P01 – P05, the requirements of the Stormwater Quality and Protection of Receiving Waters P06, P08 and P09, and also Hydrology and waterway stability PO10 – PO13 (Note: that some areas/requirements are not applicable or relevant to the proposed works). -9- TMC Building Design Group
Page 10
4.4. SITE WSUD TREATMENT MEASURES The overall site has been designed in two (2) parts due to the location and depth of the existing 150mm diameter sewer pipe that traverses through the north-eastern corner of the site. Pits 1-4 collect the stormwater that falls on the ‘Exit Side’ driveway area. Stormwater entering Pit P4 will connect into the SQIDEP approved SPELBasin (Pit P5) pre-treatment chamber, filter through the Biofilter Media, into the slotted collection pipes and pass into the outlet chamber and then discharge into Pit P6. Pit P4 is fitted with a high-level overflow pipe that connects directly into Pit P6. This high-level overflow pipe is set 50mm above the top of the incoming pipe (from Pit P3) to allow the SPELBasin to treat all smaller storm events first without overflowing. All stormwater that enters into Pit P6 will connect into the site LPD point Pit P9 and discharge from the site to the existing 600mm dia RCP stormwater barrel drain via a new Stormwater Manhole (to be constructed in accordance with Council standard drawings). The locations of the existing services present on the site (ie: sewer, water and telecommunications) have been checked to determine that the proposed stormwater pipes will be able to pass under these existing services and achieve the required minimum depth/offset clearances. On the ‘Entry Side’ of the site, a portion of the driveway area will drain into Pit P7 which connects directly to Pit P8. The remainder of the entry driveway will drain towards the 8M long x 300mm wide grated strip drain that is located just inside the entry driveway area. This strip drain will be an Aco K300, ie: 300mm wide x 450mm MIN deep strip drain. The entire length of the strip drain will be fitted internally with 8 No. SQIDEP approved SPEL Hydrochannels. The end of the strip drain connects into Pit P8. Pit P8 is fitted with a lower level SPEL Stormsack which will remove all Gross Pollutants from the entire entry driveway area prior to connecting into the final site LPD discharge Pit P9. Unfortunately, with the existing site conditions and proposed site design, it was not possible to achieve compliance with the Stormwater Quality and Protection of Receiving Waters P07, as natural stormwater quality treatment methods are not suitable or actually achievable for this particular site. It was not possible to install grassed swale areas due to the proposed high-level landscaping (ie: medium/large trees are not suitable for grassed swale areas) and the driveway pits are not located in the proximity of landscaped areas. The site is not large enough to incorporate a wetland treatment system. The site was not suited to a non-controlled, non- bunded bioretention basin- as a natural bioretention basin did not operate as efficiently and did not achieve the same level of quality compliance for the area available as the proprietary SPELBasin did. Little efficiency is gained from using raingardens- as all roofed water is captured and used in the Car Wash process (ie: this water is eliminated from the stormwater system and transfers into the trade waste/sewer system), and driveway areas could not connect into a raingardens due to site level differences. The natural slope of the existing site (of 1.2M diagonally) and the need to match in with the existing surface levels on all 4 sides of the site also further eliminates possible natural stormwater quality treatment processes from being used. We ask that Council consider the great level of work that has been completed for the holistic stormwater and waste water use and treatment cycle for this overall site, the difficult existing site features that naturally eliminate a large percentage of the possible natural quality treatment processes and the high level of compliance that is being achieved by the use of the SPELBasin, SPEL Hydrochannel and SPEL Stormsack. We request that Council adopts the “wherever possible” part of this P07 performance outcome. - 10 - TMC Building Design Group
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4.4.1. SPELBasin
The SPELBasin is a SQIDEP approved modular Bioretention System, refer to Appendix B for
further information and below in Figure 6 for a table of the treatment efficiencies provided by
this unit. Its size and capacity make it an ideal solution for stormwater treatment trains that
require a high pollutant reduction in a small footprint. It can be used in place of standard catch
basin structures, rain gardens, bioretention cells and media filters. As a self-contained treatment
train, it incorporates the following treatment components: screening, hydrodynamic separation,
media filtration and a bioretention filter. Given the subject site characteristics, ie: existing and
proposed site levels/contours, locations of the proposed landscaped areas, location of the
proposed legal point of discharge, location and depth of the existing sewer pipe traversing
through the site etc… it is not possible to install a non-proprietary raingarden or bioretention
system in the landscaped areas. As this product is a self-contained SQIDEP approved treatment
module, can be built into the landscaped area; it is the preferred system to be adopted on this
particular site. It will also make future maintenance easier due to the modular chambers of the
design making it simple to maintain given the surrounding driveway and footpath areas.
Figure 6; SPELBasin product features.
The SPELBasin is easily integrated within the proposed landscaped area and has been designed
to have a high-flow by-pass pipe for larger storm events. The SPELBasin will be planted with
specific plant species that thrive in Bioretention environments- as listed in the SPEL Technical
Design Guidelines (Appendix B, brochure page 7). Maintenance for the above unit shall be in
accordance with SPEL Stormwater requirements.
The SPELBasin has the following advantages over a traditional Bioretention Garden:
The SPELBasin is a SQIDEP verified product that is a bioretention treatment devise that
has four main differences to a typical designed bioretention system, including:
1. The use of a controlled, selected media blend,
2. Maintains horizontal flow through the media column unlike a traditional bioretention
system which is reliant on surface and downward flow, which will generally blind due
to sediment loadings,
3. An enhanced Media lifespan of between 12-15years, with minimal maintenance.
4. The unit has been independently tested and has verified reduction targets that are
SQIDEP verified as per the attached report (in Appendix B).
The SPELBasin also has consistent guaranteed stormwater quality results which surpasses
that of a typical Bioretention garden.
- 11 - TMC Building Design Group
Page 12
4.4.2. SPEL HYDROCHANNEL The SPEL Hydrochannel is a SQIDEP approved modular stormwater filtration treatment system that is easily placed into a 300mm wide strip drain, refer to Appendix C for further information and below in Figure 7. Figure 7; SPEL Hydrochannel product features. The SPEL Hydrochannel greatly enhances nutrient removal, suspended solids and heavy metals as depicted in Appendix C literature. This will provide consistent stormwater quality results which are justified by the SQIDEP verification certificate (also in Appendix C). For this specific site it is not possible to divert the GD1’s strip drain stormwater into Pit P4 due to the surface levels at the front of the site and the location/depth of the existing sewer pipe traversing through the north-eastern corner of the site. The landscape garden areas on the entry side of the Car Wash are not large enough to fit in a traditional rain garden and also could not fit an adequately sized graded grassed swale type treatment that would allow sufficient stormwater quality treatment. This is why this SQIDEP approved product has been opted for in the design. The SPEL Hydrochannel allows effective stormwater quality treatment for this entry driveway area that is achieved within the particular site constraints in a convenient, slimline, easy to maintain (all maintenance is conducted at surface level), light weight (ie: great from an OH&S viewpoint) and has no need for a large underground vault or cartridge etc… The SPEL Hydrochannel is easily maintained on this Car Wash site- as the media filter bags can be effortlessly removed and high-pressure washed in a car wash bay and reinstated in the strip drain. This will dramatically increase the lifespan of the media filter bags. - 12 - TMC Building Design Group
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4.4.3. SPEL STORMSACK Pit P8 will have a SPEL Stormsack fitted into the pit lower than both of the inlet pipes to aid in the removal of gross pollutants from this entry driveway area. Refer to Appendix A for further product details. Whilst the SPEL Stormsack is capable of removing GP, TSS, TS and TN (as shown in Figure: 8), as it is currently not a SQIDEP approved product- hence it has only been used in the MUSIC model to aid in the removal of the gross pollutants only. The SPEL Stormsack is easy to clean and maintain and has the below features as seen in Figure 8. Figure 8; SPEL Stormsack product features. - 13 - TMC Building Design Group
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5. WASTE WATER MANAGEMENT SYSTEM
Refer to the Preliminary Sanitary Drainage Layout Plan for the waste water plumbing layout for
the Car Washing process on Sh: H1 of the Application Drawings. This plan details how the waste
effluent water for the car wash is to be plumbed. During the construction documentation stage,
the additional plumbing for the Car Wash sink in the Secure Storage room, WC and Take Away
Food & Drink Outlet, and Disabled Toilet etc… will be added to this plan.
5.1. EXISTING SITE CONDITIONS
The existing 150mm dia. sewer pipes and an existing Sewer Manhole can be seen traversing
through the subject site, refer to the Existing Conditions Layout Plan refer Sh: 1 of the
Application Drawings, and Figure 9 below. Preliminary discussions have been had with Unity
Water’s Development Services team, in particular Tony Stockman, whereby it has been verbally
agreed with, subject to further documentation being provided (during the construction
documentation process), for two (2) additional sewer manholes to be provided and the existing
150mm dia. sewer pipe to be suitably diverted around the proposed Super Bay 1 building, refer
to the Proposed Site Layout Plan, Sh: 2 of the Application Drawings for the new Sewer Manhole
and diverted sewer pipe locations.
Train Station Car Park LEGEND
Diamond Lane
Opal Street
Subject Site
Figure 9; Dial Before You Dig Unity Water Sewer + Water Map
- 14 - TMC Building Design Group
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5.2. CAR WASH WASTE WATER TREATMENT SYSTEM A detailed description of the Car Wash Waste Water treatment system is as follows; 2,000L Silt pits will be installed in the Automatic Wash Bays which will be connected into a series (4 pits in total) of twin reclaim pits (~4,000L capacity each), which will be connected to the Recycle System. To cater for of effluent overflow; the final reclaim pit will also be connected into a minimum 12,000L Holding Pit. For effluent recycling from the Automatic Wash Bays to occur, the recycle unit will be placed in the Plant Room (with duty and stand-by pumps). Refer to Appendix D for details of the Reclaim unit. 2,000L Silt pits will be installed in each Self-Serve and Super Wash Bay which will discharge into the minimum 12,000L Holding Tank. The Holding Tank will have a duty and standby pump to pump the effluent water to the Oil Water Separator. The Oil Water Separator will treat the effluent water to the acceptable level and then discharge via gravity into the site’s sewer discharge location (TBC with Unity Water). The Oil Water Separator will be a Fox Environmental FX10,000 unit that will operate at a 7,200 L/hr maximum treatment capacity. This FX10,000 unit is an oversized unit (based on the expected maximum effluent volume to be treated) which has been selected to ensure the minimum 12,000L Holding Tank will be required to store minimal effluent- even when the site is functioning at its maximum potential. All on-site sanitary/Dog Wash effluent water will connect into the sewer discharge pipe after the Oil Water Separator. Each Dog Wash tub will be fitted with a suitable hair trap that is cleaned on a weekly basis. Particular attention to the Car Wash wash bay design has been given so that no waste water or effluent escapes from the wash bay areas and discharges into the stormwater system. This is achieved by giving all wash bays a 100-200mm minimum fall from the perimeter of the wash bay to the silt pit in the centre of the respective bay. Also, the roofed areas over all Self-Serve and Super Wash Bay areas have a suitable roof overhang (minimum of 1.0M) to prevent stormwater from entering into the wash bays and thereafter into the sewer system. There is a strip drain provided at the exit of the Automatic Wash Bays and the entry area of these wash bays is also contained in a bunded and drained area (via 600L Silt Pits) to help with water from escaping from this entry area. The silt pits between the Automatic Wash Bays and between the Self-Serve Wash Bays and Super Bays will be interconnected with pipes to prevent any overflow of effluent water escaping from these wash bays. The car wash will operate as a five-star water rated Car Wash. The car wash equipment used at this facility is rated under the Car Wash/State Government water rating scheme. A trade waste discharge licence will be obtained from Unity Water prior to construction commencing. - 15 - TMC Building Design Group
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5.3. CAR WASH WATER USE MODEL The water usage requirements for the different types of wash bays varies substantially (ie: automatic wash bays can use 5 times the amount of water than self-serve wash bays), as does the water usage for the different brands/manufacturers of car washing equipment that can be specifically installed on a Car Wash site. The below data is based on the Automatic wash bays being the PDQ Laserwash 360+, the Self-Serve wash bays being the Prowash iWash Classic, and the Dog Wash unit being a K9000 Twin dog wash unit. Table 1 (below) specifies the different use areas of the Car Wash and lists the typical mains water demand volume requirement per wash. The Auto Bay with Reclaim (Recycling) shows how much recycled water and fresh (mains) water can be used in each car wash cycle. An adjustment is made for water losses through drive off of between 10-15% (depending on the wash bay type). Finally, the volume of effluent water that is discharged to sewer is listed. You can see how great the variation is between the fresh water usage and sewer discharge for the Auto Bay when using/not using a recycling system. Tables 2 + 3 (below) show the maximum number of car washes that can occur in the different types of wash bay per hour and lists the total peak demand of fresh (mains) water and peak sewer discharge. Note that these two tables combine the absolute limit of every wash bay working at 100% maximum capacity for an entire hour. - 16 - TMC Building Design Group
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5.4. EXPECTED CAR WASH SITE PATRONAGE AND SEWER DISCHARGE The proposed Car Wash hours of operation are between 5am to 10pm – 7 days per week. Table 4 shows a breakdown of the expected Car Wash site patronage for a typical average weekday itemised into each different type of wash bay. The Total System Capacity references the total water effluent (in Litres) that is to be discharged into the Holding Pit and treated by the Oil Water Separator each hour. The Oil Water Separator Discharge Capacity references the output volume of the selected unit FX10,000- which can output 7,200L/hour. The Holding Tank Storage Spare Capacity refers to the additional volume of effluent water per hour that the Oil Water Separator can treat prior to beginning to store excess effluent water in the Holding Pit. The Purple and Green shaded areas compare the system without/with auto bay recycling system installed. The difference in the sewer output volume is substantial at ~20kL- even for an ‘average weekday’ operation! - 13 - TMC Building Design Group
Page 18
Table 5 shows a breakdown of the expected Car Wash site patronage for a typical peak weekend itemised per hour into each different type of wash bay. This could actually be a Friday/Saturday or Saturday/Sunday combination- but an annual allowance of this ‘Peak Weekend’ occurrence would be for an allowance of 2 days per week. Again, the difference in sewer effluent discharge when not using/using a recycle system is almost 25kL! - 14 - TMC Building Design Group
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Table 6 shows a breakdown of an expected Car Wash site patronage for a Flagship or event day itemised into each different type of wash bay. This type of event would be an irregular occurrence, but could be because of the site ’Grand Opening Day/Weekend’ or a fundraising day to support a local community group or local sporting organisation. An annual allowance of this ‘Flagship Event’ occurrence of 7 times per year has been made in the overall site annual water usage and sewer discharge calculations. In actual fact, the occurrence of this type of event is more likely to be only 2-4 times per year. Again, a point to note the vast difference in sewer discharge of over 40kL when not using and using a recycling system. - 15 - TMC Building Design Group
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5.5. ESTIMATED ANNUAL SITE PATRONAGE
Following from Tables 5 to 6; the overall annual estimated site patronage is shown in Table 7
(below). Whereby the Average Daily Mid-week and Peak Daily Weekend site patronage has been
scheduled to occur for 51 weeks of the year, and the Flagship Event Day patronage has been
modelled as occurring for 1 week (ie: 7 days) over the course of the year.
5.6. ANNUAL MAINS WATER USAGE & SEWER DISCHARGE
WITH/WITHOUT RECYCLING COMPARED.
Table 8 combines much of the previous data and tables for the annual fresh water demand and
annual sewer discharge when NOT using a recycling system.
The subsequent calculations then combine this data with the effects of the on-site stormwater
harvesting to show a reduction in volume of the mains water that is needed. This Median (Decile
5) rainfall total of 1,458 mm/year has been taken from Figures 3 + 4. The Median (Decile 5)
rainfall total represents the annual median (decile 5 or 50th percentile, ie: 50%) total precipitation
that has occurred at the subject site over the past 27 year history. This Median (Decile 5) is the
preferred measure (over the arithmetic mean) of a typical rainfall from a metorological view
point- as it negates the potential of a skewed rainfall annual result due to one extreme rainfall
event.
- 16 - TMC Building Design Group
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Table 9 shows the same information as Table 8- but with a recycling unit being installed for the treatment of the effluent water from the Auto Wash Bays. It can easily be seen that the inclusion of rainwater harvesting from the roofed areas, combined with the inclusion of the recycle unit for the Auto Wash Bays a great reduction in both the demand of fresh (mains) water of nearly ~58% or ~9 ML per year is achieved. Similarily, there is a reduction in Car Wash site effluent discharge of ~61% or ~9 ML per year. Thus, the approval of the proposed Cooroy Car Wash with both stormwater harvesting and water recycling measures installed is clearly evident. The proposed Wastewater Management and Effluent Disposal system will comply with the performance outcomes required by the Noosa Plan 2020, Part 9.4.8 Water Quality and Drainage Code PO15 to PO16. - 17 - TMC Building Design Group
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6. CAR WASH STORMWATER POLLUTION CALCULATOR To give a complete understanding of the environmental benefits of the proposed Car Wash development, a comparison with the current car washing practises of the Cooroy Primary (PTA) and Secondary (STA) Trade Areas need to be made. Table 10 gives a detailed population, household size and vehicle ownership breakdown- this data has been sourced from the Economic Needs Report. The frequency of car washes per annum has been sourced from resources provided by the Australian Car Wash Association (ACWA) and past surveys. The Economic Needs Report has identified the lack of suitable Car Washing facilities in the LGA, whereby the closest commercial Car Wash facility is around 15km away! As such, the uptake of the local Cooroy PTA and STA using these facilities is considered to be very minor, with many preferring to wash their vehicle at home. Given the nature of the Cooroy PTA and STA; it is considered that only 65% of vehicles that are being washed at home or at work would actually drain directly into the local stormwater system. This figure would be higher in a more built-up urban area due to the higher percentage of impermeable areas (ie: bitumen and concrete roadways and driveways) draining into the local stormwater system. The resultant outcome is that currently around 14.4 ML of car wash effluent water will discharge into the local Cooroy stormwater system. Refer to Appendix E for additional information that has been published by ACWA with regards to the ACWA Stormwater Statement- which provides education steps within the community about car washing, responsible vehicle washing methods, critical pollutants commonly found in car wash effluent water etc… Also the ACWA Environmental Policy Statement is also included which contains information about Stormwater Pollution, Water Efficiency and the public education campaign. Also, refer to the following link http://thedirtytruth.com.au/ which has information and videos with regards to stormwater pollution and community education. - 18 - TMC Building Design Group
Page 23
Table 11 gives a breakdown of the different pollutant types that are commonly found in effluent water from washing your vehicle at home. This pollution load is currently directly discharged into the local stormwater system. The table shows that the pollution loading is well above what is generally expected when compared with the levels commonly found in the natural marine water environment. Table 12 is similar to Table 10; but with the addition of the proposed Cooroy Car Wash customer usage being included in the table. This table includes the total estimated Cooroy car wash patronage of 67,712 vehicles per annum (as taken from Tables 8 + 9). It also assumes that there is a smaller percentage of people that still use an alternative commercial car wash- even though these facilities may not be directly located in the Cooroy PTA or STA. Car Washing is often seen as an opportunistic use; in that it is most common to be used by passing trade (ie: by customers from the adjoining two Service Station sites) or passers-by. Car Washes are most successful when they are in a convenient location that is easily accessible- such as being on the way to/from the school drop-off/pick-up, on the way to/from doing your food shopping, on the way to/from visiting family/friends or an appointment etc... Usually, Car Washes that are not in a direct path of travel or line of sight are often not as successful as they are not used as an ‘opportunistic’ habit and the customer needs to drive out of their way to use the car wash facility. - 19 - TMC Building Design Group
Page 24
As the proposed Cooroy Car Wash is proposed to be located between the two (2) existing Service Stations, on the ‘service’ side of the railway line; it is in an ideal location for a Car Wash business to be successful. Table 12 goes on to show that with the inclusion of the proposed Cooroy Car Wash there will be an estimated annual reduction of over 33,300 times that a car will not be washed at home/work every year and subsequently have the contaminated effluent water drain into the local stormwater system. This results in a reduction of around 4 ML of contaminated stormwater not draining into the local stormwater system- a massive 38% reduction due to the proposed Cooroy Car Wash facility! Table 13 goes on to calculate the resultant decrease in pollution load which discharges into the local stormwater system. By approving the proposed Cooroy Car Wash there will be a reduction of around 800 kg/year of suspended solids, a 28% drop in heavy metal loading such as copper, lead and zinc, a reduction of over 230 kg/year of total organic carbon, a reduction of around 20kg/year of Hydrocarbons and a reduction of around 110 kg/year of surfactants entering the local stormwater system. This is a substantial improvement on the current local car washing practices and the merit of this and resultant ecological improvement to the local waterways, marine life, plant and animal habitat should not be discounted. If the estimated patronage of the proposed Cooroy Car Wash site increases over that which has been estimated, these figures will further decrease contaminated discharges into the local stormwater system. - 20 - TMC Building Design Group
Page 25
7. CONCLUSION
The proposed holistic Stormwater and Waste Water Management Plan has been designed by a
professional with 18 years of experience in designing/detailing all aspects of car washes; from
Planning to Structural/Civil/Hydraulic Engineering and Architectural drafting/building design
construction documentation, and Car Wash Equipment layout documentation. It is assured that
the highest standards and car wash best practices have been followed in the documentation of
this proposal.
The proposed Stormwater and Waste Water Management Plan gives a complete analogy of how
the proposed Cooroy Car Wash can benefit the local environment and reduce the current
discharge of polluted stormwater including reducing the volume of Physico-Chemical, Heavy
Metals and Organic Pollutants by 48% based on the current car washing practices of the primary
and secondary trade areas that are currently discharged into the local stormwater system.
The proposed inclusive Stormwater design shows great innovation in being able to harvest
~96% of annual rainfall events for total re-use in the Car Wash washing process. Thereby
reducing the demand on the local mains water by over 1.1 ML per year (based on the 50%
rainfall annual total). Due to the large roofed area contributing to rainwater harvesting, this
reduces the contributing site area that yields rainfall run-off in a design storm event. This
ensures that the proposed Car Wash development will reduce the volume and peak flow rates of
stormwater site discharge than the currently being experienced by the pre-developed site!
The proposed Stormwater quality treatment train consists of SQIDEP approved products and
exceeds the minimum stormwater quality improvement targets.
The “car wash” use is a growing routine that is widely accepted by the public as an
environmentally friendly and responsible, convenient, cost-effective method of washing their
vehicle or dog. The proposed building works, stormwater and waste water treatment systems is
a hugely positive impact in the area and will not have any negative effects on the local
infrastructure.
Should you have any questions or seek any clarification on the information provided, I invite you
to contact me directly via telephone on 0416 114 573 or email [email protected] for a
timely response.
Yours Faithfully,
Tracey Digitally signed by
Tracey Michaels
Michaels Date: 2023.05.11
16:37:23 +10'00'
TRACEY MICHAELS B.ENG (Hon), M.ENG (Mgmt)
TMC Building Design Group
CHARLES GIANARAKIS REPQ 1370
CMG Consulting Engineers
- 21 - TMC Building Design Group
Page 26
APPENDIXA SPEL Stormsack |] TMC Building Design Group
Page 27
SPEL Stormsack At Source Gross Pollutant Trap spel.com.au © oat) © s = O — 2 wo a. Ww joy in water
Page 28
APPLICATIONS
• Council storm drain retrofits
• Commercial / retail / residential
• Litter prone urban areas
• Scrap metal / solid waste / oil storage
• Part of treatment train
• Construction sediment / erosion
• <200 micron capture
BENEFITS
• an be modelled in MUSIC in conjunction with
C
bio-retention
• Low cost gross pollutant capture
• Quick & easy installation
• Simple maintenance
• At source capture
• Adjusts to custom pit sizes
The SPEL Stormsack is specifically designed for the The SPEL Stormsack was introduced to the Australian
capture of gross pollutants: sediment, litter, and oil market in 2012 and field testing is underway at several
and grease. Ideally suited for storm drain retrofits, the locations in South-east Queensland. Laboratory testing
SPEL Stormsack’s unique design allows maintenance has shown capture of 99.99% of gross pollutants up to
to be performed using conventional vacuum suction the bypass flow rate.* Further results will be provided
equipment. as they become available.
SPEL Stormsack filtration solutions are highly Recommended minimum clearance from bottom of
engineered water quality devices that are SPEL Stormsack to inside bottom of vault is 50mm.
deployed directly in the stormwater system to Typical frame adjustability range of 127mm in each
capture contaminants close the surface for ease of direction.
maintenance. Easily retrofitted into new or existing
structures, SPEL Stormsack filtration technology is a
decentralized approach to stormwater treatment that
essentially repurposes traditional site infrastructure and
customizes it to meet specific site water quality goals.
In this way, it satisfies important objectives of today’s
LID (Low Impact Development) criteria.
From an operations perspective, catch basins with
SPEL Stormsack filters are also easier and quicker to
clean out because pollutants are trapped just under the
grate.
2 SPEL Stormsack
Page 29
HOW IT WORKS
This technology is a post developed stormwater
treatment system. The SPEL Stormsack provides
effective filtration of solid pollutants and debris typical
of urban runoff, while utilising the existing or new storm
drain infrastructure. The Stormsack is designed to rest
on the flanges of conventional catch basin frames
and is engineered for most hydraulic and cold climate
conditions.
Installation procedures shall include removing the
storm grate, cleaning the ledge of debris and solids,
measuring catch basin clear opening and adjusting
flanges to rest on grate support ledge. Install SPEL
FEATURES
Stormsack with splash guard under curb opening so
the adjustable flanges are resting on the grate support
ledge. Install corner filler pieces. Reinstall storm grate
directly on support flanges rise shall be no more than
3mm.
Pollutant Efficiency
Maintenance: Typically the SPEL Stormsack is
Gross Pollutants (GP) 100%
serviceable from the street level, and therefore
Total Suspended Solids (TSS) 61% maintenance does not require confined space entry
into the catch basin structure. The unit is designed to
Total Phosphorus (TP) 28% be maintained in place with a vacuum hose attached to
a sweeper or a vactor truck. Use only SPEL replaceable
Total Nitrogen (TN) 45%
parts.
*Contact Spel to confirm approved performance for the project LGA
Application Regulatory Issue Target Pollutants
Council Storm Drain Retrofits At-source litter capture Sediment, Litter, O&G
Commercial/Retail/Residential Stormwater Compliance Sediment, Litter, O&G
Litter Prone Urban Areas Cost effective litter control Litter ≥ 5 mm
Scrap Metal/Solid Waste/Oil Storage/Etc Industrial Multi-Sector General Permit Gross Pollutants, O&G
Part of Treatment Train Council Stormwater Quality Improvement Targets Sediment, Litter, O&G
Construction Sediment/Erosion Sediment Control Plan Sediment/Erosion Control
Features Standard SPEL
Stormsack to suit
1. Ultra-Durable Aluminium Frame Pit Sizes
• Available in 450x450mm, 600x600mm,
1. 450x450mm
600x900mm and 900x900mm sizes
• Custom pit arrangements upon request 600x600mm
Black Poly Surround riveted to Frame 900x600mm
2.
• Can be cut to suit on site
900x900mm
Reinforced Stormsack Bag
3. • Bag has sewed eyelets Custom
• Square bottom design for even distribution sizes (i.e.
Karabiners attach Bag to Frame for easy 1200x900mm)
4.
service & replacement can be
manufactured on
5. 5. Aluminium Support Angles & Fixings
short lead times
spel.com.au 3
Page 30
TECHNICAL DRAWINGS
6 5 4 3 2 1
580
180 220 180 ISSUE FOR APPROVAL
NOT FOR CONSTRUCTION
D D
1
180
30 80 80 8
2
30
B B 7
80
220
580
C:\Users\robin\Documents\Vault\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\Mount Frames - 450 x 450\SP15-BB4600-S.idw
80
3
ISOMETRIC VIEW
C C
180
4
580
180 220 180
135
5
30
TYP PLAN VIEW
2
180 220 180
48
45
6
100
135
221
52
30
ISOMETRIC VIEW
68 275 EXPLOSION
B B
SECTION B-B
400
PARTS LIST
ITEM QTY PART NUMBER DESCRIPTION
300
1 1 COVER POLY PLASTIC HDPE
2 1 METAL FRAME STAINLESS STEEL 304
3 12 CARABINER CLIP ALUMINIUM
4 1 CATCHMENT BAG HDPE
5 1 BAG SUPPORT - METAL MESH STAINLESS STEEL 304
6 2 STRAP 50mm POLYESTER
275
7 4 GAL. SUPPORT BRACKETS GALVANIZED
ELEVATION VIEW 8 20 BLIND RIVET STAINLESS STEEL 304
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. R.R. 08/11/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the SPEL STOMSACK A
proposal and contracts of SPEL STORMWATER with the expressed
conditions that it is not to be reproduced or copied in any form. Verified Date SSS.4545.C1
This data must only be used in accordance with our standard GENERAL ARRANGEMENT
terms and conditions.
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 08/11/2021 R.R. INITIAL RELEASE please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DATE BY DESCRIPTION CHK
specifications.
SP15-BB4600-S
6 5 4 3 2 1
6 5 4 3 2 1
ISSUE FOR APPROVAL
NOT FOR CONSTRUCTION
155
12 122 122 122
8
D D
12
1
122
A A 2
700
390
122
3
7
C:\Users\robin\Documents\Vault\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\Mount Frames - 600 X 600\SP15-BB4610-S.idw
122
45°
4
155
C ISOMETRIC VIEW C
5
155 390 155
700
6
PLAN VIEW
700
TYP
2 110 110 155 390 155
48
43
25
ISOMETRIC VIEW
100
100 100
57
EXPLOSION
397
B B
397
PARTS LIST
450
ITEM QTY PART NUMBER DESCRIPTION
350
500 1 1 COVER POLY PLASTIC HDPE
2 1 METAL FRAME STAINLESS STEEL 304
SECTION A-A
3 12 CARABINER CLIP ALUMINIUM
4 1 CATCHMENT BAG HDPE
5 1 BAG SUPPORT - METAL MESH STAINLESS STEEL 304
6 2 STRAP 50mm POLYESTER
500
7 4 GAL. SUPPORT BRACKETS GALVANIZED
ELEVATION VIEW 8 24 BLIND RIVET STAINLESS STEEL 304
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. R.R. 08/11/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the SPEL STOMSACK A
proposal and contracts of SPEL STORMWATER with the expressed
conditions that it is not to be reproduced or copied in any form. Verified Date SSS.6060.C1
This data must only be used in accordance with our standard GENERAL ARRANGEMENT
terms and conditions.
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 08/11/2021 R.R. INITIAL RELEASE please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DATE BY DESCRIPTION CHK
specifications.
SP15-BB4610-S
6 5 4 3 2 1
4 SPEL Stormsack
Page 31
TECHNICAL DRAWINGS
6 5 4 3 2 1
150 700 150 ISSUE FOR APPROVAL
A NOT FOR CONSTRUCTION
D D
185
25 130 130 130 130 130 25
8
22
1
143
2
700
330
143
C:\Users\robin\Documents\Vault\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\Mount Frames - 600 X 900\SP14-SK3450-C.idw
7
45° ISOMETRIC VIEW
22
185
C 3 C
4
A
1000
PLAN VIEW 5
TYP
2 700
130 130 130 130 185 330 185
48
6
100
48
100
100 ISOMETRIC VIEW
50
EXPLOSION
B B
PARTS LIST
450
430 ITEM QTY PART NUMBER DESCRIPTION
350
1 1 COVER POLY PLASTIC HDPE
SECTION A-A 2 1 METAL FRAME STAINLESS STEEL 304
3 16 CARABINER CLIP ALUMINIUM
4 1 CATCHMENT BAG HDPE
5 1 BAG SUPPORT - METAL MESH STAINLESS STEEL 304
800 6 2 STRAP 50mm POLYESTER
ELEVATION VIEW 7 4 GAL. SUPPORT BRACKETS GALVANIZED
8 24 BLIND RIVET STAINLESS STEEL 304
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. R.R. 08/11/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the SPEL STOMSACK A
proposal and contracts of SPEL STORMWATER with the expressed
conditions that it is not to be reproduced or copied in any form. Verified Date FRAME 900 x 600
This data must only be used in accordance with our standard GENERAL ARRANGEMENT
terms and conditions.
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 08/11/2021 R.R. INITIAL RELEASE please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DATE BY DESCRIPTION CHK
specifications.
SP14-SK3450-C
6 5 4 3 2 1
6 5 4 3 2 1
1000
640 ISSUE FOR APPROVAL
NOT FOR CONSTRUCTION
8
20 150 150 150 150
D D
1
20
150
7
C:\Users\robin\Documents\Vault\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\Mount Frames - 900x 900 - INLET 600X600 (750X750)\SP19-SK13240-S.idw
150
A A
1000
640
150
2
45°
150
3
C ISOMETRIC VIEW C
4
PLAN VIEW 5
1000
180 640 180
95 95 95 95 95 95
48
100
6
52
100
50
103 103
750 ISOMETRIC VIEW
835 EXPLOSION
B 660 B
500
SECTION A-A
400
750 PARTS LIST
ITEM QTY PART NUMBER DESCRIPTION
1 1 COVER POLY PLASTIC HDPE
2 1 METAL FRAME STAINLESS STEEL 304
3 28 CARABINER CLIP ALUMINIUM
4 1 CATCHMENT BAG HDPE
835
5 1 BAG SUPPORT - METAL MESH STAINLESS STEEL 304
ELEVATION VIEW 6 2 STRAP 50mm POLYESTER
7 4 GAL. SUPPORT BRACKETS GALVANIZED
8 28 BLIND RIVET STAINLESS STEEL 304
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. R.R. 08/11/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the SPEL STOMSACK A
proposal and contracts of SPEL STORMWATER with the expressed
conditions that it is not to be reproduced or copied in any form. Verified Date SSS.7575.C1
This data must only be used in accordance with our standard GENERAL ARRANGEMENT
terms and conditions.
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 08/11/2021 R.R. INITIAL RELEASE please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DATE BY DESCRIPTION CHK
specifications.
SP19-SK13240-S
6 5 4 3 2 1
spel.com.au 5
Page 32
INSTALLATION DETAILS
6 5 4 3 2 1
REVISION HISTORY
REV DESCRIPTION DESIGNER CREATION DAT CHECKED BY
1 INITIAL RELEASE M.MAKIN 15/10/2015
D GRATE STORMSACK
D
GRATE
DETAIL 'A' SUPPORT FRAME SUPPORT FRAME
STORMSACK OIL BOOM STORMSACK WITH
GRATE
SUPPORT FRAME 80µm FILTER MESH
& INNER MESH
(FOR 600x900 , 900x900 , 450x450)
D:\Vault Working Folder\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\INSTALLATION\SP15-ST10970-S.idw
450mm
C C
DETAIL 'A'
MIN. 150mm
B
B B
SECTION VIEW
NOTE: BY USING THE STORMSACK THE GRATE
WILL BE APPROX. 3-5mm HIGHER
ISSUE FOR APPROVAL
NOT FOR CONSTRUCTION
TOLERANCE: ALL DIMENSIONS 10mm UNLESS OTHERWISE STATED.
CLIENT: The drawings must not be disclosed to any third Drawn Date PROJECT :
parties without written permission from SPEL Environmental Sydney.
Unauthorised disclosure may result in prosecution. M.MAKIN 15/10/2015
© SPEL Environmental - This drawing is the property of SPEL
Check Date
A Environmental ABN: 83 151 832 629 and is subject to return on
demand. It is submitted for the use only in connection with the
TITLE
SPEL STORMSACK A
proposal and contracts of SPEL Environmental with the expressed
conditions that it is not to be reproduced or copied in any form.
Verified Date INSTALLATION GUIDE
This data must only be used in accordance with our standard GRATED PIT
terms and conditions.
© Copyright Approved Date
SPEL Environmental accepts no responsibility for any loss or SCALE SIZE SHEET REV
damage resulting from any person acting on this information. N.T.S A3 1
Request No. 1
The details and dimensions contained in this document may change,
please check with SPEL Environmental for confirmation of current CUSTOMER CODE : DWG No.
specifications. SP15-ST10970-S
6 5 4 3 2 1
6 5 4 3 2 1
REVISION HISTORY
REV DESCRIPTION DESIGNER CREATION DAT CHECKED BY
1 INITIAL RELEASE M.MAKIN 15/10/2015
DETAIL 'A'
STORMSACK SOLID TOP
D SUPPORT FRAME COVER D
OIL BOOM STORMSACK WITH
80µm FILTER MESH
& INNER MESH TOP COVER
SUPPORT FRAME
DETAIL 'D'
D:\Vault Working Folder\Designs\SPEL\STD ITEMS\PRODUCTS\STORMSACK\SPEL STORMSACK\STORMSACK FRAME & GA - FINAL VERSION 2015\INSTALLATION\SP15-ST10980-S.idw
C C
(FOR 600x900 , 900x900 , 450x450)
DETAIL 'A'
STORMSACK EQUAL ANGLE
450mm
SUPPORT FRAME
STORMSACK
SUPPORT FRAME
B B
MIN. 156mm
DETAIL 'D'
SECTION VIEW
ISSUE FOR APPROVAL
NOT FOR CONSTRUCTION
TOLERANCE: ALL DIMENSIONS 10mm UNLESS OTHERWISE STATED.
CLIENT: The drawings must not be disclosed to any third Drawn Date PROJECT
parties without written permission from SPEL Environmental Sydney.
Unauthorised disclosure may result in prosecution. M.MAKIN 15/10/2015
© SPEL Environmental - This drawing is the property of SPEL
Check Date
A A
Environmental ABN: 83 151 832 629 and is subject to return on
TITLE
demand. It is submitted for the use only in connection with the SPEL STORMSACK
proposal and contracts of SPEL Environmental with the expressed
conditions that it is not to be reproduced or copied in any form.
Verified Date INSTALLATION GUIDE
This data must only be used in accordance with our standard SIDE ENTRY PIT
terms and conditions.
© Copyright Approved Date
SPEL Environmental accepts no responsibility for any loss or SCALE SIZE SHEET REV
damage resulting from any person acting on this information. N.T.S A3 1
Request No. 1
The details and dimensions contained in this document may change,
please check with SPEL Environmental for confirmation of current CUSTOMER CODE : DWG No.
specifications. SP15-ST10980-S
6 5 4 3 2 1
6 SPEL Stormsack
Page 33
SPEL Stormsack
At Source Gross Pollutant Trap
NSW HEAD OFFICE QLD MAIN OFFICE VIC & TAS OFFICE
100 Silverwater Rd, Silverwater NSW 2128 130 Sandstone Pl, Parkinson QLD 4115 897 Wellington Rd Rowville VIC 3178
PO Box 7138, Silverwater NSW 1811 P: +61 7 3271 6960 P: +61 3 5274 1336
P: +61 2 8705 0255 P: 1300 773 500 | E: [email protected] P: 1800 810 139 | E: [email protected]
P: 1300 773 500 E: [email protected]
QLD SUNSHINE COAST BRANCH VIC GEELONG BRANCH
19‑27 Fred Chaplin Circuit, Bells Creek, QLD 4551 70 Technology Close, Corio,
P: 1300 773 500 | E: [email protected] P: +61 3 5274 1336
P: 1800 810 139 | E: [email protected]
SA OFFICE WA OFFICE NZ OFFICE AUCKLAND
9 Hampden Road, Mount Barker SA 5251 2 Modal Crescent Canning Vale WA 6155 100 Montgomerie Road Airport Oaks
P: 1300 773 500 E: [email protected] P: +61 8 9350 1000 P: +64 9 276 9045
P: 1800 335 550 E: [email protected] E: [email protected]
NZ OFFICE WANGANUI NZ OFFICE WELLINGTON PHILIPPINES OFFICE METRO MANILA
43 Heads Road Wanganu New Zealand 41 Raiha St Porirua Wellington New Zealand Unit 2210 Lumiere Residences
P: +64 6 349 0088 | E: [email protected] P: +64 4 239 6006 | E: [email protected] Pasig Boulevard, Pasig City
P: +61 2 8705 0255
P: 1300 773 500 E: [email protected]
SINGAPORE OFFICE UK OFFICE UNITED KINGDOM USA OFFICE CLEVELAND
512 Chai Chee Lane, #06-04 Bedok Lancaster Rd Shrewsbury SY1 3NQ UK 4548 Industrial Parkway Cleveland,
Industrial Estate, Singapore 469028 P: +44 (0)1743 445200 | E: [email protected] Ohio 44135
P: +61 2 8705 0255 P: +61 2 8705 0255
P: 1300 773 500 | E: [email protected] P: 1300 773 500 E: [email protected]
We believe clean water is a
right not a privilege and we
work to ensure a joy in water
experience for you with your
children and grandchildren.
100 Silverwater Rd, Silverwater NSW 2128 Australia
Phone: (02) 8705 0255
Email: [email protected]
spel.com.au
SPEL Stormwater accepts no responsibility for any loss or damage resulting from any
person acting on this information. The details and dimensions contained in this document
may change, please check with SPEL Stormwater for confirmation of current specifications.
0522
Page 34
APPENDIX B SPELBasin TMC Building Design Group
Page 35
Stormwater Quality Improvement Device Evaluation Protocol (SQIDEP) –
VERIFICATION CERTIFICATE
Applicant Information
Applicant Name SPEL Stormwater Pty Ltd
Applicant Address 100 Silverwater Rd, Sydney, NSW 2128
Phone Number +61 1300 773 500
Fax Number N/A
Email [email protected]
Website www.spel.com.au
Verified Technology
SPELBasin®
Issue Date 25th September 2020
Reviewed Documents Associate Professor Terry Lucke and Ms Oriana Sanicola, Evaluation of Treatment
Performance of SPEL Basin at Sippy Downs, May 2018, Stormwater Research
Group, University of Sunshine Coast.
Dr Darren Drapper and R. Biggins, Field Monitoring of a SPEL
Basin at University of Sunshine Coast, 90 Sippy Downs Dr, Sippy Downs QLD
4556, Issue 1, Drapper Environmental Consultants, 10 October 2019.
SPEL Basin Monitoring setup (digital video)
SPEL Basin Technical Design Guideline, revised August 2020.
Dr Darren Drapper and E. Hancock, Field Monitoring of a SPEL
Basin at University of Sunshine Coast, 90 Sippy Downs Dr, Sippy Downs QLD
4556, SQIDEP Body of Evidence Application Supplementary Report, Issue 1,
Drapper Environmental Consultants, 31 July 2020
Page 36
Verification Certificate – SQIDEP VC
Reference Number: SA-2019/009/VC
Technology Information
Applicant’s
Verified Total Suspended Solids (TSS) 86 %
Performance Total Phosphorus (TP) 65 %
Claims Total Nitrogen (TN) 50 %
Total Petroleum Hydrocarbons 0 %
Gross Pollutants 99 %
Others, please detail:
____________________________________________________
Maintenance
performed The inlet chamber and StormSack was maintained once annually during monitoring;
during No maintenance was performed on the planted media;
monitoring The SPELBasin® Technical Guideline recommends maintenance of the inlet chamber and
Stormsack quarterly;
Verified The submitted, calibrated MUSIC model provides a method of modelling the technology
method to with 1 Generic node as per the image below;
model in
MUSIC
The input criteria for the node is;
o Generic node
High Flow Bypass 0.01 m3/s
Gross Pollutants Input = 150 mg/L Output = 1.5 mg/L
Total Suspended Solids Input = 1000 mg/L Output = 140 mg/L
Total Phosphorus Input = 10 mg/L Output = 3.5 mg/L
Total Nitrogen Input = 50 mg/L Output = 25 mg/L
Conditions The limitations of the acceptance of these claims include;
The results are for a road-based catchment. The results lie within acceptable inflow
limits for this type of catchment and based on the analysis are found to be acceptable.
This does not necessarily relate to other catchment types, though it noted that hard
stand catchments will behave similarly. Cleaner, roof catchments
may not achieve the same pollutant reduction targets;
The results are for a hydraulic loading rate up to 250m/year. Should the hydraulic load
rate exceed this, the results and life expectancy of the media would be expected to
decline in line with excessive loading on the device;
The results are reliant on the maintenance of the device being consistent with the
manufacturers guidelines and those that are contained in the report. Most importantly
2
© Stormwater Australia
Page 37
Verification Certificate – SQIDEP VC
Reference Number: SA-2019/009/VC
the cleaning of the Storm Sack and filter cartridge at regular intervals;
The life expectancy of the device and the media is unknown. In discussions with the
manufacturer the testing is consistent to at least the 6 year mark. It is suggested that
an estimated lifespan of both media and the whole device be written into any technical
guidelines as the filter material will deteriorate over time;
The acceptance of these results is reliant on the installation being similar to that shown
in this analysis. Alternative installations may result in different outcomes;
Designs & Installations of the SPELBasin® are in accordance with the SPEL Stormwater
SPELBasin® Technical Guidelines; and
If the media is observed to not fully drain down to its lowest level within 2 hours
following an event, investigate the media permeability, and if required replace media.
Independent
Reviewers Mr Chris Beardshaw, Afflux Consulting
Mr Mark Liebman, Sustainability Workshop
Accepted by
Governance 24/9/2020
Panel
Accepted by
Stormwater 25/9/2020
Australia
Board
3
© Stormwater Australia
Page 38
6 5 4 3 2 1
REVISION HISTORY
REV DESCRIPTION DESIGNER DATE CHECKED BY
1 INITIAL RELEASE M.M 14/07/2015
900 4200 900
D D
A A
1340
PLAN VIEW
C C
FLAUSHOUT PORTS INLET WATER OUTLET WATER ISOMETRIC VIEW
TRANSFER SYSTEM
D:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND\STANDARD\MWS-L-4-21 (8Lps)\STANDARD\SP15-MB8930-S.idw
TRANSFER SYSTEM
MANHOLE COVER MANHOLE COVER
OUTLET WATER
CONTROL & RISER
1300
INLET IL.
B B
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER DISCHARGE CHAMBER
APPROVED.................
COARSE SEDIMENT
OUTLET WATER OUTLET IL. RIGHT END VIEW
FILTER MEDIA FILTER
TRANSFER SYSTEM OUTLET NAME................................
6020
SIGNED.............................
6120
DATE........../........../..........
ELEVATION VIEW ISSUE FOR APPROVAL
SECTION A-A NOT FOR CONSTRUCTION
TOLERANCE: ALL DIMENSIONS 10mm UNLESS OTHERWISE STATED.
CLIENT: DISTRIBUTOR : The drawings must not be disclosed to any third Drawn Date PROJECT :
parties without written permission from SPEL Environmental Sydney.
Unauthorised disclosure may result in prosecution. M.M 18/05/2015
SPEL Environmental - This drawing is the property of SPEL
Environmental ABN: 83 151 832 629 and is subject to return on Check Date
A demand. It is submitted for the use only in connection with the TITLE
SPEL BASIN A
proposal and contracts of SPEL Environmental with the expressed
conditions that it is not to be reproduced or copied in any form.
Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS-L-4-21 - 8 LPS
terms and conditions. GENERAL ARRAGEMENT
Copyright Approved Date
SPEL Environmental accepts no responsibility for any loss or SCALE SIZE REV
N.T.S SHEET
damage resulting from any person acting on this information.
Request No. A3 1 1
The details and dimensions contained in this document may change,
please check with SPEL Environmental for confirmation of current RN1600 CUSTOMER CODE : DWG No.
specifications. SP15-MB8930-S
6 5 4 3 2 1
Page 39
SPEL Basin Modular bio-retention basin SQIDEP),., VERIFIED) } spelstormwater joy in water spel.com.au
Page 40
APPLICATIONS
• Car parks & shopping centres
• Council depots
• Industrial estates
• Heavy vehicle maintenance
• Transport depots & loading bays
• Tunnels
• Highways & transport corridors
• Recycling yards
• Airport aprons & tarmacs
BENEFITS
The SPELBasin is an advanced stormwater treatment
system that works with natural forces to provide
superior pollutant removal. Delivered as a pre-
fabricated, compact and self-contained treatment
system, the SPELBasin utilises HORIZONTAL FLOW
bioretention technology and multistage pre-treatment. • Built-in bypass available with all configurations
Easy to size, install and maintain, the SPELBasin is • All configurations utilise a pre-treatment chamber
ideally suited for the urban environment – treating which contains:
runoff from parking lots, roadways, residential and • Litter capture
commercial developments and/or retrofit applications.
• Sediment chamber
Available in numerous sizes and various inlet • Pre-filter cartridges
configurations, including internal high flow bypass, the
SPELBasin is clearly the most versatile and innovative
stormwater treatment system.
Verificatio
Stormwater Quality Improvement Device Evaluation Protocol (SQIDEP) n Certificate
Reference –
Maintenan Number: SA-YY SQIDEP VC
ce VERIFICATION CERTIFICATE YY/MM/VC
performed • Stormwate
durin r Technology
Applicant Information g monitoring A was
monitorin • This main period; Cond maintained once
g ition per annum
tenance includ s over the 3
Applicant Name Example Pty cartri
Ltddge; ed complete year
• No other replaceme
maintenan Thnte ve of the techn
• This NSW ce2000 rif ology
Applicant Address 2 Puddles wasSydney
Way,
verified with
was performed
during the
•
icatio
company. a Statutory moni
th n of Verif
Declaration e aptored perio thes Refe icatio
+61 2 1234 5678 from plica d;e
Phone Number catcthe
hmmain tion ce Claims renc n
e Nu Certific
Verified • entstenan of St is co mbe ate –
The ; orm nditi r: SA SQ
Email method to [email protected]
• The moni num wat onal -YYY IDEP
per er Te upon
model in technology
toring progr
am included hect ber of St chno ; Y/M
M/V
VC
• are
Website MUSIC www.example.com.au
scour and
as well as the
struc
information Th
on e the of ca ormwat logy
A C
settling; ture it was footperformantchm er Te in Re
house10d%withi pr ce ofenthe siden
• The subm
itted MUSI • per n, in tot accou
of th nt t area chnolo tia
maximum C model and Mai 10 units e hofor ; gy A im l an
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structure;
and minim DPR
um structures provides
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descdesig anguide of St using st plem mm
n
, and calibr ribed ce mus or
lines for mwat ru ct en ted er cial
Verified Technology • The subm Stormwater Technology A
itted, calibr
•
The
ated k value
3
in th s fort be
e DPR; the sc he
er Te ure mus
ch t be
refle
cts 3,
technology ated is 25 month nolo 000
with 3 node MUSIC model provi 0 L/a methdesig
des
dule
d an gy A; betwee units
Issue Date below;YYYY
dd Mmmm s and prima • s; od ofn mode d co n 10
ry andAn mpl 0 m3
ex dary links as flowralling
secon the eted ±
and ternal te pe
per the image annu
Reviewed Documents • Quality Assurance Project Plan, Stormwater mod
Technology byA, r un ally
•
MUS elle pass fo it of
Stor as pe
d ap
Consultant A, 2025 IC m prop r flows mw
ater
r th
at
odel riate grea Tech
• Quality Assurance Project Plan Approval, Stormwater sTechnology
bein ly in ter th
g pr MUS an th no logy
A, Stormwater Australia, 2025 epar IC; e de A
ed in sign
acco TFR
• Detailed Performance Report, Stormwater Technology A, rdan is im
Consultant A, 2028 ce w plem
ith th ente
e de d,
• Laboratory Report, Stormwater Technology A – University X, 2021 tail
abov
e.
• Statutory Declaration, Consultant A, 2025
A, 2025
• The input criterMUSIC model file, Consultant
• Calibrated
ia for each
o Structure node are;
node
▪ high flow
Technology Information bypass = X 3
▪ Area = m /s
Y m2
Applicant’s Total Suspended Solids▪ (TSS)
Depth =70 Zm %
Verified Total Phosphorus (TP)▪ Orifice diam 30 %
eter = W mm
Performance Total Nitrogen (TN) ▪ Weir lengt 30 %
Claims ▪ FootprintNilh%= V m
Total Petroleum Hydrocarbons to be scale
Gross Pollutants Stormwate Nilr % d according
o Generic Technology to 100 m 3
node A per 10 units
Others, please detail: of
▪ high flow
bypass = X 3
▪ TSS reduc m /s
________________________________________________________ _______
tion = 70 %
▪ TP reduc
tion = 30 %
▪ TN reduc
© Stormwater © St tion = 30 %
or
AustraliaYYYY mwa 1
© Stormwater Australia YYYY ter Au
strali
a YY
YY
2
SPEL Basin
3
2
Page 41
FEATURES 0d Pre-treatment chamber 6 Pre-filter cartridge Captures incoming runoff and contains the first three Provides the third stage of treatment by physically and stages of treatment. chemically capturing fine TSS, metals, nutrients, and bacteria. @ Grate type catch basin inlet @ Wetland chamber A standard grate type traffic rated catch basin opening directs Provides the final stage of treatment through a stormwater into the system. combination of physical, chemical and biological processes. © Catch basin insert filter Q Discharge chamber Provides the first stage of treatment by capturing trash Contains flow control, high flow bypass and optional & litter, gross solids, and sediment. drain down filter. @ Settling chamber 6 Multi-level flow control Provides the second stage of treatment by separating Orifice plates and/or valves are used to control the out larger suspended solids. flow through the treatment stages. Volume Sizing MUSIC Modelling The SPEL Basin Modular Wetlands system can be The SPELBasin Modular Bioretention System is designed to treat flows from detention systems or modeled [typically in MUSIC] for each project based on directly off hardstand surfaces. Contact SPEL for more the site specific requirements. information. Tested Treatment Efficiencies* Pollutant Efficiency Gross Pollutants (GP) 99% Total Suspended Solids (TSS) 86% Total Phosphorus (TP) 65% Total Nitrogen (TN) 50% *Contact Spel to confirm approved performance for the project LGA spel.com.au
Page 42
DRAWINGS
Drawing 2LPS
6 5 4 3 2 1
900 900
D D
1340
A A
DISCHARGE CHAMBER
OUTLET
C C
PLAN VIEW
INFLOW GATE
INLET WATER
SPEL STORMSACK
TRANSFER SYSTEM
ISOMETRIC VIEW
E:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND-2021\MWS-L-3-6 (2Lps)\STANDARD\SP21-MB19890-S.idw
600 X 600
1300
FLAUSHOUT PORTS
B B
MEDIA FILTER
OUTLET
OUTLET WATER
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER TRANSFER SYSTEM
1800
COARSE SEDIMENT
FILTER 1920 RIGHT END VIEW
OUTLET
SECTION A-A
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. M.M 13/04/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the
proposal and contracts of SPEL STORMWATER with the expressed
SPEL BASIN A
conditions that it is not to be reproduced or copied in any form. Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS- L-3-6/2 LPS - SPEL STORMSACK
terms and conditions. GENERAL ARRAGEMENT
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 INITIAL RELEASE M.M 14/07/2015 please check with SPEL STORMWATER for confirmation of current Request No.
CUSTOMER CODE : DWG No.
REV DESCRIPTION DESIGNER DATE CHECKED BY
specifications. RN1799 SP21-MB19890-S
6 5 4 3 2 1
Drawing 4LPS
6 5 4 3 2 1
900 1800 900
D D
OVERALL WIDTH 1340
A A
OUTLET
C PLAN VIEW C
FLAUSHOUT PORTS INLET WATER
TRANSFER SYSTEM
ISOMETRIC VIEW
MANHOLE COVER
INFLOW GATE
E:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND-2021\MWS-L-4-13 (4Lps)\STANDARD\SP21-MB19910-S.idw
SPEL STORMSACK
600 X 600
OUTLET WATER
OVERALL HEIGHT 1300
CONTROL & RISER
B B
OUTLET
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER DISCHARGE CHAMBER
COARSE SEDIMENT OUTLET WATER RIGHT END VIEW
FILTER TRANSFER SYSTEM MEDIA FILTER OUTLET
3620
3720
ELEVATION VIEW
SECTION A-A
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT:
The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. M.MAKIN 13/04/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the
proposal and contracts of SPEL STORMWATER with the expressed
SPEL BASIN A
conditions that it is not to be reproduced or copied in any form. Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS-L-4-13 - 4 LPS - SPEL STORMSACK
terms and conditions. GENERAL ARRAGEMENT
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
1 INITIAL RELEASE M.MAKIN 14/07/2015 please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DESCRIPTION DESIGNER DATE CHECKED BY
specifications. RN1799 SP21-MB19910-S
6 5 4 3 2 1
4 SPEL Basin
Page 43
DRAWINGS
Drawing 6LPS
6 5 4 3 2 1
900 3000 900
D D
A A
1340
OUTLET
PLAN VIEW
C C
INFLOW GATE FLAUSHOUT PORTS INLET WATER
OUTLET WATER
TRANSFER SYSTEM ISOMETRIC VIEW
SPEL STORMSACK TRANSFER SYSTEM
600 X 600
E:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND-2021\MWS-L-4-17 (6Lps)\STANDARD\SP21-MB19930-S.idw
MANHOLE COVER
COARSE SEDIMENT
FILTER
OUTLET WATER
CONTROL & RISER
1300
B B
OUTLET
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER DISCHARGE CHAMBER
OUTLET WATER RIGHT END VIEW
TRANSFER SYSTEM MEDIA FILTER
OUTLET
4820
4920
ELEVATION VIEW
SECTION A-A
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
CLIENT: The drawings must not be disclosed to any third
Drawn Date PROJECT :
parties without written permission from SPEL STORMWATER .
Unauthorised disclosure may result in prosecution. M.MAKIN 13/04/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the
proposal and contracts of SPEL STORMWATER with the expressed
SPEL BASIN A
conditions that it is not to be reproduced or copied in any form. Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS-L-4-17 - 6 LPS - SPEL STORMSACK
terms and conditions. GENERAL ARRAGEMENT
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
A3 1 1
The details and dimensions contained in this document may change, N.T.S
1 INITIAL RELEASE M.MAKIN 13/04/2021 please check with SPEL STORMWATER for confirmation of current Request No. CUSTOMER CODE : DWG No.
REV DESCRIPTION DESIGNER DATE CHECKED BY
specifications. RN1799 SP21-MB19930-S
6 5 4 3 2 1
Drawing 10LPS
6 5 4 3 2 1
900 4200 900
D D
A A
1340
OUTLET
PLAN VIEW
C C
FLAUSHOUT PORTS INLET WATER OUTLET WATER ISOMETRIC VIEW
TRANSFER SYSTEM TRANSFER SYSTEM
E:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND-2021\MWS-L-4-21 (12Lps)\STANDARD\SP21-MB19950-S.idw
INFLOW GATE
SPEL STORMSACK
600 X 600
OUTLET WATER
CONTROL & RISER
1290
B B
OUTLET
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER DISCHARGE CHAMBER
COARSE SEDIMENT
OUTLET WATER
RIGHT END VIEW
FILTER MEDIA FILTER
TRANSFER SYSTEM OUTLET
6020
6120
ELEVATION VIEW
SECTION A-A
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
The drawings must not be disclosed to any third PROJECT :
CLIENT: parties without written permission from SPEL STORMWATER . Drawn Date
Unauthorised disclosure may result in prosecution. M.MAKIN 13/04/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the
proposal and contracts of SPEL STORMWATER with the expressed
SPEL BASIN A
conditions that it is not to be reproduced or copied in any form. Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS-L-4-21 - 10 LPS - SPEL STORMSACK
terms and conditions.
GENERAL ARRAGEMENT
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
please check with SPEL STORMWATER for confirmation of current Request No.
1 INITIAL RELEASE M.MAKIN 13/04/2021 CUSTOMER CODE : DWG No.
REV DESCRIPTION DESIGNER DATE CHECKED BY
specifications. RN3345
16385-TD SP21-MB19950-S
6 5 4 3 2 1
spel.com.au 5
Page 44
SPEL Basin
Modular bio-retention basin
NSW HEAD OFFICE QLD MAIN OFFICE VIC & TAS OFFICE
100 Silverwater Rd, Silverwater NSW 2128 130 Sandstone Pl, Parkinson QLD 4115 897 Wellington Rd Rowville VIC 3178
PO Box 7138, Silverwater NSW 1811 P: +61 7 3271 6960 P: +61 3 5274 1336
P: +61 2 8705 0255 P: 1300 773 500 | E: [email protected] P: 1800 810 139 | E: [email protected]
P: 1300 773 500 E: [email protected]
QLD SUNSHINE COAST BRANCH VIC GEELONG BRANCH
19‑27 Fred Chaplin Circuit, Bells Creek, QLD 4551 70 Technology Close, Corio,
P: 1300 773 500 | E: [email protected] P: +61 3 5274 1336
P: 1800 810 139 | E: [email protected]
SA OFFICE WA OFFICE NZ OFFICE AUCKLAND
9 Hampden Road, Mount Barker SA 5251 2 Modal Crescent Canning Vale WA 6155 100 Montgomerie Road Airport Oaks
P: 1300 773 500 E: [email protected] P: +61 8 9350 1000 P: +64 9 276 9045
P: 1800 335 550 E: [email protected] E: [email protected]
NZ OFFICE WANGANUI NZ OFFICE WELLINGTON PHILIPPINES OFFICE METRO MANILA
43 Heads Road Wanganu New Zealand 41 Raiha St Porirua Wellington New Zealand Unit 2210 Lumiere Residences
P: +64 6 349 0088 | E: [email protected] P: +64 4 239 6006 | E: [email protected] Pasig Boulevard, Pasig City
P: +61 2 8705 0255
P: 1300 773 500 E: [email protected]
SINGAPORE OFFICE UK OFFICE UNITED KINGDOM USA OFFICE CLEVELAND
512 Chai Chee Lane, #06-04 Bedok Lancaster Rd Shrewsbury SY1 3NQ UK 4548 Industrial Parkway Cleveland,
Industrial Estate, Singapore 469028 P: +44 (0)1743 445200 | E: [email protected] Ohio 44135
P: +61 2 8705 0255 P: +61 2 8705 0255
P: 1300 773 500 | E: [email protected] P: 1300 773 500 E: [email protected]
We believe clean water is a
right not a privilege and we
work to ensure a joy in water
experience for you with your
children and grandchildren.
100 Silverwater Rd, Silverwater NSW 2128 Australia
Phone: (02) 8705 0255
Email: [email protected]
spel.com.au
SPEL Stormwater accepts no responsibility for any loss or damage resulting from any
person acting on this information. The details and dimensions contained in this document
may change, please check with SPEL Stormwater for confirmation of current specifications.
0922
Page 45
SPELBasin spelstormwater Pte spel.com.au
Page 46
Contents 1. Introduction
1. Introduction 2 1.1 BIOFILTRATION
1.1 Biofiltration 2
1.2 Modular Biofiltration 3 Biofiltration systems are one type of WSUD system
1.3 Design Drawings/Dimensions 3 that have been implemented in urban areas to manage
2. Applicability Guide 4 stormwater by reducing peak flows and downstream
3. Functions 5 pollution (Davis & Birch, 2009; Hunt et al., 2008; Le
3.1 Hydrology 5 Coustumer et al., 2012). Biofiltration is also referred
3.2 Sediment 5 to as bioretention, biofilters and rain gardens in
3.3 Nutrient Removal 5 various literature. This report will use the terms
3.3.1 Particulate nutrient removal 5 interchangeably.
3.3.2 Dissolved nutrient removal 5
4. Design 6 Biofiltration systems have been popular because of
4.1 Outlet invert level (Saturated Zone) 6 flexibility in their design which assists with simple
4.2 Inlet invert level & type 6 integration (retrofitting) into existing urban areas
4.3 Bypass 6 (Bratieres et al., 2008), as well as new developments.
4.4 Inlet and outlet configurations 6 Biofiltration systems are also considered to add to the
4.5 Surface level set-down 7 benefits of traditional stormwater quality by including
4.6 edge interface 7 aesthetic and social benefits (Mullaney et al., 2015).
4.7 Plant selection 7
5. Maintenance 8 Biofiltration relies on physical, chemical and biological
5.1 Access 8 processes that occur in the various zones including the
5.2 Inlet structures 8 extended detention depth, filter media and drainage
5.3 Sediment & Litter removal 8 layers as indicated in Figure 1. Design modifications
5.4 Slotted-drainage pipes 8 can include a submerged zone beneath the drainage
5.5 Filter Media Hydraulic Conductivity 8 layer to retain water for enhanced plant survival during
6. MUSIC Model Application 9 dry weather and denitrification. Stormwater is treated
7. Summary 9 as it filters through the vegetated media, utilising plant
uptake, microbial processing, adsorption and physical
filtration to reduce pollutant loads.
FIGURE 1.
SCHEMATIC CROSS-SECTION OF A BIOFILTRATION SYSTEM
2 Technical Design Guidelien SPELBasin
Page 47
To ensure effective Flow then enters the biofiltration chamber via a pipe
functioning of located at the base of the structure, and is distributed
the biofiltration throughout the filter media through a HDPE geo-grid
system, standard fitted to the perimeter walls (4). Stormwater filters
specifications of through the proprietary media blend horizontally and
the soil media have into the centrally-located, slotted collection pipes (5)
been developed that discharge to the outlet chamber (6). Flow finally
(FAWB, 2009). enters the underground stormwater drainage system
These specifications through a discharge pipe (7) that is controlled by an
require traditional offset outlet from the base to create a permanently
biofiltration systems submerged zone. These are shown in Figure 3.
to implement three
layers of media, as 1.3 DESIGN DRAWINGS/DIMENSIONS
indicated in Figure 2.
A standard drawing of the SPELBasin® is shown in
FIGURE 2. Figure 4. The SPEL basin has an overall length, width
BIOFILTRATION MEDIA LAYERS SECTION and height of 6120 x 1340 x 1300 mm respectively. The
system allows for stormwater runoff to enter via a kerb
These three layers then have a detailed specification inlet, a grated inlet or underground pipe. The kerbtype
that describes the particle size distribution, nutrient inlet and grated inlet are fitted with a 600 x 600 mm
content and desired permeability to achieve the PEL StormSack which filters gross pollutants from
stormwater treatment goals. stormwater inflow.
1.2 MODULAR BIOFILTRATION Pre-filter cartridges are situated within the pre-
treatment chamber to further remove coarse sediment
The SPELBasin® modular biofiltration system has from stormwater that bypasses the StormSack. Flow
a number of similar design features to a traditional is horizontally dispersed through a 7.3 m3 biofiltration
biofilter, however, differs in two key areas; system with a proprietary biofiltration media blend
which drains treated stormwater into the 1.56 m3
• the use of a proprietary media blend; and discharge chamber. Treated water is discharged
• horizontal flow instead of top-down flow; through outlet pits and to street drainage.
The treatment process provided by the SPELBasin®
commences with runoff entering via a kerb inlet (2),
grated inlet or pipe network, and passing through
a coarse sediment screen in the pre-treatment
chamber (3).
FIGURE 3.
SPELBASIN® SCHEMATIC
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2. Applicability Guide
As a modular biofiltration system, there are some considerations that should be incorporated into the design
process. These are indicated below in Table 1.
Design Consideration Applicability Information
At source stormwater treatment ✓ SPELBasin® systems are ideal for capturing runoff as it
leaves a road, carpark and/or catchment surface.
Litter, sediment & nutrient capture ✓ Biofilters utilise physical, biochemical and biological
processes to remove particulates and dissolved pollutants
from stormwater.
Urban/civic landscaping ✓ The modular configuration allows landscaping to be
incorporated into roadscapes and traditionally hard
cityscapes.
Constrained sites ✓ SPELBasin® systems can be as small as 0.6% of the
contributing catchment, and lifted into difficult to access
locations.
Moderate to steep gradient sites ✓ The fibreglass and precast concrete chambers promote
unique alternatives to retaining walls and features in
steep sites.
Sites with <600mm gradient ✓ Designs can accommodate internal invert level increases
to achieve discharge on very flat sites, provided a free
surface can be achieved.
Tidal influence X SPELBasin® is not suitable for locations that are subject to
tidal influence.
Tailwater --- Tailwater can affect the treatment flow rate through the
SPELBasin®, and should be avoided if possible. Check
with SPEL Stormwater.
High velocity flowpaths X As a filtration and biological treatment system, high
velocity flowpaths may cause damage to the SPELBasin®.
An external bypass is recommended.
Greywater treatment ✓ SPELBasin® systems have been observed to remove
nutrients and suspended solids from stormwater. They
could equally remove nutrients from greywater.
TABLE 1.
APPLICABILITY GUIDE FOR SPELBASIN®
4 Technical Design Guidelien SPELBasin
Page 49
6 5 4 3 2 1
900 4200 900
D D
A A
1340
OUTLET
PLAN VIEW
C C
FLAUSHOUT PORTS INLET WATER OUTLET WATER ISOMETRIC VIEW
TRANSFER SYSTEM TRANSFER SYSTEM
E:\Vault Working Folder\Designs\SPEL\PRODUCTS\BASIN\MODULAR WETLAND-2021\MWS-L-4-21 (12Lps)\STANDARD\SP21-MB19950-S.idw
INFLOW GATE
SPEL STORMSACK
600 X 600
OUTLET WATER
CONTROL & RISER
1290
B B
OUTLET
PRETREATMENT CHAMBER BIOFILTRATION CHAMBER DISCHARGE CHAMBER
COARSE SEDIMENT
OUTLET WATER
RIGHT END VIEW
FILTER MEDIA FILTER
TRANSFER SYSTEM OUTLET
6020
6120
ELEVATION VIEW
SECTION A-A
TOLERANCE: All Dimensions to Closest 10 mm & +/- 30 mm ALL INTERCONNECTING PIPEWORK, PITS AND ASSOCIATED DRAINAGE BY OTHERS
The drawings must not be disclosed to any third PROJECT :
CLIENT: parties without written permission from SPEL STORMWATER . Drawn Date
Unauthorised disclosure may result in prosecution. M.MAKIN 13/04/2021
© SPEL STORMWATER - This drawing is the property of SPEL
STORMWATER ABN: 83 151 832 629 and is subject to return on Check Date TITLE
A demand. It is submitted for the use only in connection with the
proposal and contracts of SPEL STORMWATER with the expressed
SPEL BASIN A
conditions that it is not to be reproduced or copied in any form. Verified Date MODULAR WETLAND SYSTEM 2.0
This data must only be used in accordance with our standard MWS-L-4-21 - 10 LPS - SPEL STORMSACK
terms and conditions.
GENERAL ARRAGEMENT
© Copyright Approved Date
SPEL STORMWATER accepts no responsibility for any loss or
damage resulting from any person acting on this information. SCALE SIZE SHEET REV
The details and dimensions contained in this document may change, A3 1 1
N.T.S
please check with SPEL STORMWATER for confirmation of current Request No.
1 INITIAL RELEASE M.MAKIN 13/04/2021 CUSTOMER CODE : DWG No.
REV DESCRIPTION DESIGNER DATE CHECKED BY
specifications. RN3345
16385-TD SP21-MB19950-S
6 5 4 3 2 1
FIGURE 4.
SPELBASIN® STANDARD DRAWING
3. Functions 3.3 NUTRIENT REMOVAL
Nutrients are observed in stormwater in particulate
and dissolved forms. The relative percentages remain
Similar to traditional biofiltration, the SPELBasin® subject to further research, however, both forms are
improves water quality through several functional targeted by the SPELBasin® system.
pathways.
3.3.1 PARTICULATE NUTRIENT REMOVAL
3.1 HYDROLOGY
Particulate nutrients are captured via the same
The SPELBasin® system facilitates buffering of pathways as sediment, since they are typically strongly
stormwater flows due to capillary action provided by adsorbed to sediment.
the filtration media, and during dry periods plants draw
the reserved water from the anaerobic (submerged) 3.3.2 DISSOLVED NUTRIENT REMOVAL
zone. This reserve volume is then retained during the
next storm event. The SPELBasin® technology utilises a proprietary
media blend that has been designed to target
3.2 SEDIMENT dissolved phosphorus and nitrogen. As well as the
physico-chemical properties of the media, the biofilter
Several technologies and processes are incorporated plants remove nutrients from the stormwater and
into the SPELBasin® design to capture and retain provide microbial communities to biologically remove
sediment. For a grated inlet chamber, a Stormsack pit dissolved nutrients. As with all living assets, an
basket captures the coarse sediment as it enters. For a establishment period is typical. This may vary from
piped entry, a coarse filter cartridge settles sediment in 6 – 18 months depending on the plant growth cycle
the inlet chamber, minimising the chances of it entering and climatic conditions. Once established, the
the filter chamber. A proprietary blend of filter media SPELBasin® system should operate constantly and
maintains high hydraulic conductivity whilst filtering consistently for as long as the plants and media are
sediment from the treatment flow. As a final barrier, a viable.
geotextile surrounds the collection pipes to prevent
sediment and filter media leaving the SPELBasin®.
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4. Design 4.3 BYPASS
The SPELBasin® system is designed for flows that
exceed the design treatment flow rate (TFR) to be
Unlike traditional biofilter design, it is not necessary to bypassed externally. This is typically achieved by
utilise drainage, transition and filter media layers. The ensuring that when the inlet cannot carry any additional
SPELBasin® system is delivered with the proprietary flow, flow is re-directed to a nearby/adjacent inlet pit.
media pre-mixed ready for installation into the If the SPELBasin® requires an underground pipe inlet
prefabricated chamber. Of importance, however, is that type, the bypass can be formed into the inlet chamber,
the geotextile protecting the outer geogrid and internal or as a separate pit.
collection pipes is not damaged during the media
installation. 4.4 INLET AND OUTLET CONFIGURATIONS
4.1 OUTLET INVERT LEVEL (SATURATED ZONE) Multiple configurations are possible with the
SPELBasin® depending on the site constraints. Some
The SPELBasin® system is designed to accommodate examples are indicated below.
up to 300mm reservoir of water as a saturated/
anaerobic layer at the bottom. The levels from this
outlet to the receiving drainage network should be
checked to ensure the outlet is free-draining.
As a secondary guide, the Facility for Advancing Water
Biofiltraton (FAWB, 2009) recommend calculating the
saturated zone with the following equation;
D = 8x t
Where: D = depth of saturated zone (mm)
t = average of the longest annual dry period
(days)
This level tends to determine the inlet level that runoff
can enter the SPELBasin®.
4.2 INLET INVERT LEVEL & TYPE
The inlet level of the SPELBasin® system depends on
the type of inlet structure;
• Kerb inlet;
• Grated inlet; and/or
• Pipe inlet.
Kerb and grated inlets have up to 150 mm of flexibility
to match with surface levels. This also enables up to
150mm of extended detention within the SPELBasin®
system.
Piped inlets have ~600 mm of flexibility to ensure the FIGURE 5.
SPELBASIN® INLET AND OUTLET CONFIGURATIONS
inlet pipe and outlet discharge to a free water surface.
The exact dimensions will depend on the inlet pipe
diameter, depth/cover and class.
6 Technical Design Guidelien SPELBasin
Page 51
4.5 SURFACE LEVEL SET-DOWN 4.7 PLANT SELECTION
Pedestrian and vehicular safety is important when Plant selection for the SPELBasin® is very similar to that
integrating the SPELBasin® into the roadscape and of a traditional biofilter. Wetland grasses and shrubs are
cityscape. Therefore, designers need to consider the most suitable with a core species list provided below.
interchange between the filter surface and surrounding
landscape.
Species name Common name Plant habit
Application area Surface level setdown Banksia robur Swamp Banksia Small tree/
shrub
Roadscape Maximum 200 mm Callistemon Little John, Wee Small-
Footpaths/bikeways Maximum 500 mm viminalis Johnnie, Harkness, medium tree/
Parkland, landscaping Maximum 1000 mm hybrids Kings Park Special shrub
where barriers or fencing Bottlebrush
are included Ficinia nodosa Knobby club-sedge Sedge/grass
(also known as
4.6 EDGE INTERFACE Isolepsis
nodosa)
The SPELBasin® system is supplied in precast concrete Gahnia aspera Red-fruited Sedge
or prefabricated fibreglass structures. This results in a saw-sedge
vertical edge to the technology. Also, there is a defined
Imperata Blady grass Grass
inlet to the system. Designers should allow for surface
cylindrica
gradients to transport flow to the inlet location, and
provide edge treatments (barriers, vegetation, batters) Juncus Common Rush Sedge/grass
to discourage pedestrian and/or vehicular access to usitatus
the filter media and outlet chambers. Lomandra River mat-rush Grass
hystrix
Edge treatments could incorporate treated-timber
Lomandra Spiny-headed Grass
sleepers, rock blocks, fencing, bollards or barrier
longifolia mat-rush
planting.
Melaleuca Thyme honey Shrub
thymifolia myrtle
Melaleuca “Snow in Summer” Shrub
linariifolia
Melaleuca Black tea-tree Small tree
bracteata
TABLE 2.
RECOMMENDED PLANT SPECIES FOR SPELBASIN®
Due to the high permeability of the SPELBasin® filter
media, it may be necessary to irrigate newly planted
systems until they are established, or reliable, regular
rainfall is received.
Planting density is recommended to be 6 plants/sqm,
and a variety of species should be used, instead of a
FIGURE 6. monoculture.
SPELBASIN® WITH TIMBER SLEEPER EDGE TREATMENT
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5. Maintenance
Depending on the design of the SPELBasin®, the
material captured in the Stormsack and inlet chamber
should be mostly dry.
The SPELBasin® system requires regular, simple
maintenance to ensure its long-term effectiveness.
5.1 ACCESS
The inlet chamber and Stormsack are the areas of
the SPELBasin® that will require the most attention for
regular maintenance. These items are likely to capture
the highest loads of sediment and litter (organic and
anthropogenic) and therefore will need cleaning on a
regular basis (eg. Quarterly). Whilst these are not large
areas, a Stormsack full of sediment and organic matter
can be heavy, and so access to the inlet chamber
should be provided.
Suitable access could consist of a concrete or FIGURE 8. SPELBASIN® INSPECTION OPENINGS
compacted crusher dust pathway, pavers, or
permeable paving.
5.4 SLOTTED-DRAINAGE PIPES
5.2 INLET STRUCTURES
Filtered stormwater is captured by slotted drainage
pipes within the SPELBasin® filter media. These are
The inlet to the SPELBasin® may be via a kerb inlet
installed within a geofabric sleeve, and protrude above
or surface grate. Regular inspections should check
the media surface. Each end of the drainage pipes is
that these remain clear of debris and free-flowing.
capped with an inspection fitting.
Underground pipe inlets to the SPELBasin® should
also be checked to ensure debris is not settling in the
Maintenance activities should ensure that sediment
upstream pipe, and if observed, should be removed
is not collecting in the slotted pipes, and flow to the
during the inlet chamber maintenance.
outlet is not obstructed.
If treatment flow is reduced and occlusion due to
sedimentation in the pipes is suspected, they can be
jetrodded and vacuum-cleaned at the outlet chamber.
If this breakthrough of sediment is observed in the
drainage pipes, it may be an indicator that replacement
of the filter media is required.
5.5 FILTER MEDIA HYDRAULIC CONDUCTIVITY
The proprietary filter media blend in the SPELBasin®
has a high hydraulic conductivity compared with
traditional biofilters. This allows the SPELBasin® to
treat higher flows per square metre, whilst maintaining
FIGURE 7. SPELBASIN® KERB AND GRATED INLET
high pollutant removal rates. To ensure treatment flow
rates are maintained, annual maintenance inspections
5.3 SEDIMENT & LITTER REMOVAL should check that the water level of the SPELBasin®
returns to the “standby” level after 2 hours. If the
Removal of sediment and litter from the inlet chamber water level remains high after more than 2 hours,
and Stormsack may require a small vehicle and replacement of the media may be required.
hoist, as well as vacuum eduction to ensure optimal
operation of the SPELBasin®. Since the inlet is a Filter media infiltration rates (hydraulic conductivity)
relatively small volume, a commercial wet/dry vacuum may be tested using the FAWB methodology, or the
may be sufficient, removing the need for large AS1547:2000 Australian Standard Constant Head test.
eduction trucks. The inlet coarse sediment filter is This should be conducted in at least two locations, and
the SPEL coalescer media cartridge. Annual removal boreholes at two depths (150mm & 400mm).
of the cartridge and low pressure rinse will maintain
the treatment flow rate. The coarse sediment filter Contact SPEL Stormwater for more details.
cartridge should be replaced on a 10 year interval.
8 Technical Design Guidelien SPELBasin
Page 53
6. MUSIC Model 7. Summary
Application
The SPELBasin® modular biofiltration system provides
treatment of stormwater in a package that can be
The Model for Urban Stormwater Improvement quickly and simply installed. The SPELBasin® has been
Conceptualisation (MUSIC) is a software tool that independently field tested in accordance with the
simulates the behaviour of stormwater quality in urban Stormwater Australia SQIDEP protocol at Sippy Downs,
catchments. This tool is widely used in the Stormwater Queensland. The SPELBasin® provides pollutant
Industry by professionals and this section provides reductions of 86% TSS, 65% TP, 50% TN and should
a consistent and uniform approach for modelling provide the same 99% gross pollutant reduction of
SPELBasin® in all urban development projects. It is traditional biofilters. A Generic MUSIC# node for
the aim here to provide a step by step guide for the modelling SPELBasin® is recommended and scaling the
assessment authorities to ensure the model is a correct technology in increments of 10L/s per module should
representation of the ultimate installed products in the maintain the pollutant removal performance observed
field. in the Australian Field monitoring.
SPELBasin® is represented in MUSIC using a generic Maintenance is required as per SPEL’s Operation &
node. Field research of the SPELBasin® found that Maintenance Manual to ensure optimal performance.
the observed parameters were outside the algorithm
bounds inside MUSIC and therefore to build a model
that reflected the observed results required model
inputs vastly different to those implemented onsite.
Therefore, treatment efficiency of the SPELBasin®
generic node is instructed by the observed field
performance. The design treatment flow rate (TFR) of
a standard SPELBasin® module is 10 L/s with removal
rates of 99% GP, 86% TSS, 65% TP, 50% TN. The
following inputs are recommended for the Generic
node;
Input Output Removal
Pollutant
Concentration Concentration %
Gross 100 1 99
Pollutants
TSS 100 14 86%
TP 100 14 86%
TN 50 25 50%
FIGURE 9.
SPELBASIN® MUSIC NODE FOR GROSS POLLUTANTS REMOVAL
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