RE_ Proprietary Products & Compliance with SQUIDEP.eml

Subject: RE: Proprietary Products & Compliance with SQUIDEP
From: Brad Dalrymple <[email protected]>
Date: Wed, 16 Sep 2020 22:48:04 +0000
To: Cherie O'Sullivan <[email protected]>

Ah, Coolio !! 

 

I’ve now reviewed the solution against relevant parts of the 2006 Plan (“Water Sensitive Design Code”, see attached).  My responses are given below in blue, but .. in short, I think it looks all good. 

 

Acor are just keen to confirm that the proposed stormwater quality strategy (OceanGuard <https://oceanprotect.com.au/oceanguard/>  gully baskets and StormFiter <https://oceanprotect.com.au/stormfilter/>  cartridges, which is sized to achieve SPP targets and will result in a significant decrease to pollutant load discharges relative to the existing site) is ok.  

 

In case you (and/ or the assessing officer) are interested, I’ve attached details of the design and modelling and also provided the following two reports via dropbox at  <https://www.dropbox.com/sh/8unp4xnimdn5u89/AACS19k6WFaUthM5lH0hRIN8a?dl=0> https://www.dropbox.com/sh/8unp4xnimdn5u89/AACS19k6WFaUthM5lH0hRIN8a?dl=0:

*	Report “A review of the application of OceanGuard® in Noosa Shire”
*	Report “A review of the application of StormFilter® in Noosa Shire”

 

The reports provide a bunch of info re case studies, performance monitoring, approvals etc.  Just some light reading as I’m sure you don’t do enough reading with your PhD 😉  

 

Feel free to call whenever suits.  

 

PS:  I’m not sure if you saw, but there’s a pretty cool Stormwater Queensland/ Stormwater Victoria webinar <http://stormwaterqueensland.asn.au/events/>  today that I’m helping facilitate.  If you can’t attend (and it’s too late to register as it is now at capacity with over 500 registered), I’ll swing you the youtube recording which should be available some time after.  

 


column 1 Specific Outcomes

column 2

Probable solutions (if code assessment)

Evaluation of Proposed stormwater quality strategy


Maintenance of environmental values and water quality objectives

O1    Downstream ecosystems, properties and infrastructure are not adversely impacted by either changes to flow, water quality or ecosystem health caused by development.

 

S1.1 Development meets the applicable performance outcomes of the State Planning Policy  Appendix 2 SPP Code: Water Quality;

AND

 

S1.2 Design and  construction methods for stormwater quality treatment assets are in accordance with Healthy Waterways Water By Design Guidelines; AND

 

S1.3 Commitments are made to implement a cost effective maintenance strategy for the life cycle of any engineered water quality treatment device;

AND

 

S1.4 Water quality nutrient load modelling is undertaken in accordance with Water by Design Music Modelling Guidelines to demonstrate compliance with the SPP nutrient reduction requirements;

AND

 

S1.5 Stormwater outlets that directly discharge to naturally acidic environments are managed to prevent eutrophication; AND

 

S1.6 Suitable methods are incorporated to prevent the spread of invasive

environmental weed species at stormwater outlets.

 

S1.1 Given the site area is less than 2500m2, the proposed development does not trigger compliance requirements with State Planning Policy stormwater pollutant load removal targets.  Nevertheless, the strategy has still been designed to achieve best practice (State Planning Policy) pollutant load reduction targets, and ‘protect and enhance’ downstream water quality – noting a significant reduction in pollutant loads relative to the existing site is predicted (in comparison to the proposed development with the given stormwater quality strategy). 

 

As per the attached MUSIC model, TSS/TP/TN and GP loads are predicted to decrease by 91, 68, 45 and 100% respectively.  The model is attached for Council’s review.

 

A strategy is proposed that consists of OceanGuard and StormFilter SQIDs.  Both SQIDs have been developed and optimised to minimise maintenance costs and the need for specialised equipment for maintenance.  Over 20,000 OceanGuards and 28,000 StormFilter systems have been installed within Australia.  Maintenance requirements are detailed in the reports available via dropbox here <https://www.dropbox.com/sh/8unp4xnimdn5u89/AACS19k6WFaUthM5lH0hRIN8a?dl=0>  (which provide operation and maintenance manuals for both SQIDs). 

 

S1.2  The HLW guidelines do not provide design and construction advice for the proposed SQIDs.  However, the SQIDs will be designed and installed in accordance with best practice design guidelines available in the aforementioned reports. 

 

S1.3  The ownership (and responsible management) of the proposed SQIDs will be retained by the site owner/ manager.  Detailed life cycle costing will be undertaken following development approval – but would obviously be dependent on the nominated group/ individual to undertake the maintenance.  It is anticipated that an appropriate maintenance agreement will be a condition of development approval.

 

S1.4  As outlined above, MUSIC modelling has been undertaken.  All modelling has been undertaken in accordance with Water by Design MUSIC modelling guidelines.  The model is attached for Council’s review. 

 

S1.5  No applicable

 

S1.6  Not applicable


Shire Business Centre

O5    Within the Shire Business Centre site, as shown on Map SBC run-off treatment is contained within the developable areas of the site and drainage lines are only used for final polishing of run-off;

AND

 

O6    Within the Shire Business Centre site, as shown on Map SBC, on-site detention measures are contained within the developable areas of the site, clear of drainage lines and Open Space Precincts.

 

No probable solution

 

All stormwater treatment is proposed to occur on-site.  No detention is necessary for the proposed development. 


Use of natural treatments and systems

O7      Natural treatment strategies, including grass swales and bio-retention systems, vegetated filtration strips and gross pollutant traps, are used wherever possible.

 

O8    Development design including density and scale provides adequate footprint to integrate all elements of stormwater quality and quantity treatment infrastructure including, where relevant, bio retention basin batters and maintenance access, without the need for retaining walls.

 

O9    Stormwater conveyance channels use natural channel design principles to convey external catchment stormwater through the development site and support landscape, passive recreation and ecological values.

 

S7.1 No probable solution

 

S8.1 Integration of stormwater quality treatment is in accordance Healthy Waterways Water Sensitive Urban Design Guidelines for South East Queensland and the Water by Design Bio retention Technical Design Guideline.

 

S9.1 Landscape and ecological features (e.g. plant species and habitat types) used in stormwater conveyance channels are complementary to the local context, including natural waterways;

AND

 

S9.2 Planting densities result in a stable channel over the long term and minimize potential for invasive weed growth.

 

The proposed SQIDs will be appropriately integrated into the site with suitable maintenance access.

 

As per the discussion with Councils’s Cherie O’Sullivan and Ocean Protect’s Brad Dalrymple and Acor’s Shane Sullivan on 20 August 2020, bioretention systems (or other ‘natural treatment strategies’ are not an appropriate or practical solution for the site.  This is because the site requires ‘pit and pipe’ drainage (i.e. not sheet flow for entire site) and this subsequently would result in an inappropriately deep invert for any pipe discharging to a potential bio basin (and associated significant public safety, amenity and functional issues).


O10 Development design and operation facilitates nil increase in gross pollutants entering stormwater systems.

S10.1 Methods to prevent gross pollutants entering stormwater systems and waterways are adopted that—

a)            are low maintenance;

b)           prevent nutrient leaching in the event scheduled maintenance is delayed; and 

c)            facilitate human behaviour change (e.g. signage, bins).

 

As per the attached MUSIC model, zero gross pollutant loads are predicted to discharge from the site.  The model is attached for Council’s review.

 

 


Kind regards,

Brad Dalrymple

Principal Environmental Engineer 


 <http://www.oceanprotect.com.au/> 



 

 

 <https://linkedin.com/company/oceanprotect>    <https://www.facebook.com/OceanProtectAu/>    <https://www.youtube.com/channel/UCUrlrGR-QKxSf-3kR2QqeaA>    <https://www.instagram.com/ocean.protect/>   

m             0417 746 408
p              1300 354 722

29 Chetwynd Street, Loganholme QLD 4129 Australia

 

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From: Cherie O'Sullivan <[email protected]> 
Sent: Wednesday, 16 September 2020 4:15 PM
To: Brad Dalrymple <[email protected]>
Subject: RE: Proprietary Products & Compliance with SQUIDEP

 

Hey Brad – 

Yes the day has got away- apologies I didn’t call you either. 

I am not sure what tomorrow is going to look like for me just yet.

I have put a post it note on the centre of  my computer to call you which I will do when I am able to tomorrow, or Friday :) 

FYI Mary street is being assessed under the 2006 Planning Scheme – your table below is the 2020 planning scheme. 

I am not assessing that one but have let the assessing officer know the pollution reduction targets do not need to be met for that site (under the 2006 Noosa Plan) therefore the pollutant reductions will not be interrogated.  

 

 

From: Brad Dalrymple <[email protected] <mailto:[email protected]> > 
Sent: Wednesday, 16 September 2020 3:54 PM
To: Cherie O'Sullivan <[email protected] <mailto:[email protected]> >
Subject: RE: Proprietary Products & Compliance with SQUIDEP

 

Hey Cherie,

 

I hope you’re well. 

 

Firstly … What are you doing work emails on a Sunday night !?!

 

Secondly … I meant to call you this arvo, but the day has got away from me and I’m just about to virtually step into a lecture for a subject I’m giving at Griffith Uni.  

 

Is there any time tomorrow that you’re available to chat re the BP Noosaville project ?  The below text provides an evaluation of the proposed stormwater quality strategy against selected performance criteria of the water quality and drainage code of the Noosa Plan 2020 (so, in short … I think it’s all good), but we can chat further when you’re available.  

 

Thanks !! 

 

PS:  I trust you are now an avid listener of the Ocean Protect podcast …. 😉 

 

 


Performance Outcome

Acceptable Outcomes

Evaluation of Proposed stormwater quality strategy 


PO4
Stormwater infrastructure is compatible with existing infrastructure, allows for easy  <https://noo-prod-icon.saas.t1cloud.com/Pages/Plan/Book.aspx?exhibit=Current> access for the ongoing maintenance by Council, is cost effective across its design life.

AO4.5 
Stormwater infrastructure is designed to minimise maintenance costs and the requirement for specialized equipment for maintenance techniques.

 

Both the OceanGuard & StormFilter SQIDs have been developed and optimised to minimise maintenance costs and the need for specialised equipment for maintenance.  Over 20,000 OceanGuards and 28,000 StormFilter systems have been installed within Australia.  Maintenance requirements are detailed in the attached reports (which provide operation and maintenance manuals for both SQIDs).  


PO6
Development is located, designed, constructed and operated to protect and enhance environmental values and water quality of waterways, wetlands, lakes, ground waters and drainage systems.

 

AO6.2
All stormwater runoff is treated to achieve maximum removal of nutrients, gross pollutants and suspended solids as determined by cost to efficiency ratios. (e.g. bioretention basins must be sized to achieve at least 80% reduction in total suspended solids, 60% reduction in total phosphorous, 45% reduction in total nitrogen and 90% reduction in gross pollutants >5mm).

 

OR

 

AO6.3
Developments achieve a minimum 3 drop rating consistent with the Water by Design Living Waterways Scoring Guide (Healthy Land and Water).

The strategy has been designed to achieve best practice (State Planning Policy) pollutant load reduction targets, and ‘protect and enhance’ downstream water quality – noting a significant reduction in pollutant loads relative to the existing site is predicted (in comparison to the proposed development with the given stormwater quality strategy). 

 

As per the attached model, TSS/TP/TN and GP loads are predicted to decrease by 91, 68, 45 and 100% respectively.   


PO7
Water quality treatment systems use natural processes and materials, whenever possible, and are integrated into development to enhance biodiversity and landscape benefits.

 

AO7.1 

Water quality treatment systems are designed to be  integrated into the landscape  consistent with the technical design guideline published by Healthy Land and Water Water by Design for the feature. (eg. For Bioretention Basins: Bioretention Technical Design Guidelines (October 2014) and for Wetland <https://noo-prod-icon.saas.t1cloud.com/Pages/Plan/Book.aspx?exhibit=Current>  Systems the Wetland <https://noo-prod-icon.saas.t1cloud.com/Pages/Plan/Book.aspx?exhibit=Current>  Technical Design Guideline (May 2017).

 

The proposed SQIDs will be integrated underground with no loss of useable space and no risk to public safety.  Educational signage is, however, proposed to notify site users of the installed stormwater quality strategy (and its role in protecting downstream waterway health).  

 


PO8
Water quality treatment infrastructure to be dedicated as public assets are proven to be suitable for its use and of a cost effective and efficient standard.

AO8.1

Detailed life cycle costing is provided for the entire treatment train system including replacement costs of asset parts.

 

AO8.2 Treatment systems dedicated as public assets are designed to minimise maintenance, renewal and adaption costs and the requirement for specialised equipment, material or maintenance techniques.

 

AO8.3

Vegetated stormwater management systems to be dedicated as public assets are established and maintained during the maintenance period to ensure optimal vegetated growth and that the functional elements of the system achieve the design function at the end of the maintenance period

 

The ownership (and responsible management) of the proposed SQIDs will be retained by the site owner/ manager.  Detailed life cycle costing will be undertaken following development approval – but would obviously be dependent on the nominated group/ individual to undertake the maintenance.  It is anticipated that an appropriate maintenance agreement will be a condition of development approval. 

 

 

 

 


Kind regards,

Brad Dalrymple

Principal Environmental Engineer 




 

 

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m             0417 746 408
p              1300 354 722

29 Chetwynd Street, Loganholme QLD 4129 Australia

 

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Kind regards,

Brad Dalrymple

Principal Environmental Engineer 




 

 

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m             0417 746 408
p              1300 354 722

29 Chetwynd Street, Loganholme QLD 4129 Australia

 

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From: Cherie O'Sullivan <[email protected] <mailto:[email protected]> > 
Sent: Sunday, 13 September 2020 10:17 PM
To: Brad Dalrymple <[email protected] <mailto:[email protected]> >
Subject: Proprietary Products & Compliance with SQUIDEP

 

Hi Brad,

Just heard your phone message. SQUIDEP is relevant  to proprietary products where the resulting water quality/pollutant reduction targets need to be demonstrated in the development application.

Where a development application does not need to meet pollutant reduction targets, we will not be assessing the performance against SQUIDEP. 

Applications with or without proprietary products do however need to meet all other outcomes /objectives of the Noosa Planning Scheme.

 

Hope that helps.

I’m back in Wednesday afternoon if you had further queries.

Cheers

Cherie

 

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