(Based on Canberra, Melbourne, Sydney time)
Development assessment workshop for stormwater quality management for local government and regulators in Victoria
Date: Wednesday, 21st July 2021 - 1.00 - 2.00 pm
Clause 56.07-4 of the Victoria Planning Provisions requires that new developments do not result in associated waterways being degraded by urban runoff and that urban stormwater management systems be “designed and managed in accordance with the requirements and to the satisfaction of the relevant drainage authority”. Stormwater quality management plans/ reports (and associated modelling files) are typically subsequently prepared in support of development applications – and submitted to local government (and/ or other regulatory authorities) for assessment and, if appropriate, approval. Development Assessment personnel subsequently have the challenging task of undertaking a rapid review of technical information (including reporting, drawings and modelling files) to determine whether the proposed strategy (and associated stormwater control measures, SCMs) is appropriate – and provide suitable development approval conditions.
In this interactive 1-hour workshop, Ocean Protect’s Brad Dalrymple and Michael Wicks will provide a brief overview of common deficiencies in stormwater quality-related aspects of new development applications – followed by answers to questions from attendees, and associated discussions.
Attendance to this webinar is only available to personnel from local government (and other regulatory authorities) in Victoria. Registration numbers will be limited to augment participant interaction, and registrants are encouraged to nominate any particular areas/ topics of interest (or key issues to be discussed) as part of their registration. Please email these to Brad Dalrymple (email@example.com). The recording (and associated supporting files) from the virtual workshop will not be made publicly available.
Does bioretention actually work?
Over recent decades, the implementation of stormwater control measures (SCMs) to achieve a more ‘water sensitive’ urban environment and reduce the hydrologic and water quality impacts of urban development has increased across Australia (and overseas). With Australia, biofiltration systems (also called biofilters, bioretention basins, bioretention systems, bioswales and raingardens) are one of the most commonly used SCM given their flexible design, space efficiency and applicability at a variety of scales. But, do biofiltration systems actually work ? Specifically, are biofiltrations likely to provide a sustained, effective stormwater treatment function consistent with their intent ?
In this free webinar, Ocean Protect’s Brad Dalrymple and Michael Wicks will provide a brief (25-minute) review of available lab and field-scale studies of their stormwater treatment performance, assess the ‘transition’ of performance data to the ‘real world’, and outline key recommendations – followed by Q&A with attendees.
This webinar is provided to assist personnel from local government (and other regulatory authorities) and private industry involved in the planning, design, implementation, management and review of biofiltration systems
Best practice design and management of Gross Pollutant Traps (GPTs)
Gross pollutants traps (GPTs) are the oldest form and often most commonly applied stormwater quality improvement device in Australia and overseas. Their success has varied – from preventing the discharge of enormous quantities of litter and coarse sediment into our waterways and ocean, to being completely non-functional or, at times, worsening downstream water quality.
This free webinar will include a brief (15 to 20-minute) presentation from Ocean Protect’s Daniel Page and Peter Worth on the history of GPTs, different types (and suitable applications), and key considerations in their appropriate design and management – followed by answers to questions from attendees.
Development assessment for stormwater quality management – tips, tricks & tribulations
Within Australia, development applications are commonly required to demonstrate how ‘post construction’ (or ‘operational phase’) stormwater quality targets will be achieved. Stormwater quality management plans/ reports (and associated information) are subsequently prepared in support of development applications – and submitted to local government (and/ or other regulatory authorities) for assessment and, if appropriate, approval.
Development Assessment personnel subsequently have the challenging task of undertaking a rapid review of technical information (including reporting, drawings and modelling files) to determine whether the proposed strategy (and associated SCMs) is appropriate – and provide suitable development approval conditions.
In this free webinar, Ocean Protect’s Brad Dalrymple and Michael Wicks will provide a brief (20-minute) presentation of common deficiencies in stormwater quality-related aspects of new development applications – followed by answers to questions from attendees. The webinar will focus on the following key areas (for both proprietary and non-proprietary SCMs):
– Modelling ‘tricks’ that are commonly applied that will exaggerate the performance of SCMs, and how to quickly identify them
– Design, implementation, and management mistakes that are commonly made that invariably lead to the poor function of SCMs (including several ‘real world’ examples)
– Approval conditions to consider applying to support the appropriate long-term function of SCMs proposed as part of new development.
Best practice design & management for the OceanGuard and StormFilter treatment train
The combination of Ocean Protect’s OceanGuard and StormFilter technologies are one of the most commonly applied proprietary ‘stormwater treatment trains’ in Australia.
This webinar provides an overview of the OceanGuard and StormFilter technologies – their components, performance, and how to appropriately design, install, and manage these assets to ensure their optimal function. The webinar will include a short presentation by Ocean Protect’s Harout Tcherkezian, followed by answers to questions from attendees.
Stormwater treatment performance for a high flow rate biofiltration system at Western Sydney, Kingswood, NSW
Since May 2018, stormwater treatment performance testing has been undertaken for a high flow biofiltration system located in Western Sydney, NSW, Australia.
The biofiltration system uses an engineered filter media (Filterra) that can treat flows at a significantly higher flow rate than typical biofiltration filter media and the media is produced to strict quality control procedures. For example, the design drainage rate of the engineered filter media is 3550mm/hour, whereas a typical ‘sandy loam’ filter media has a design drainage rate of 200mm/hour. Subsequently, biofiltration systems using this engineered filter media can treat significantly more flow (and can potentially be significantly smaller, typically sized at 0.3% of the upstream catchment) relative to a typical biofiltration system (typically sized at between 1 to 2% of the upstream catchment).
This webinar provides an overview of the high flow (Filterra) biofiltration systems and the performance monitoring undertaken to date. The webinar will include a short (15-20 minute) presentation, followed by Q&A with attendees.
How SQID proprietors will exaggerate stormwater treatment performance claims via SQIDEP
Within Australia, the vast majority of stormwater industry stakeholders (including Ocean Protect) have been in favour of a national program for the evaluation and verification of stormwater quality improvement devices (SQIDs).
Stormwater Australia’s (2018) Stormwater Quality Improvement Device Evaluation Protocol (SQIDEP) describes a criteria for the testing and performance claim reporting of SQIDs and was anticipated to be the basis of this national program. Unfortunately, SQIDEP (in its current form) is recognised by many key regulators and other industry stakeholders as having significant deficiencies which, if allowed to remain without amendment, will produce exaggerated or over-estimated treatment performance results for SQIDs – and, ultimately, reduced ‘actual’ protection of the health of our waterways. Many of these deficiencies have been documented in submissions by key industry stakeholders to Stormwater Australia, including Stormwater Queensland and Stormwater NSW.
In this webinar, Michael Wicks (Technical Director at Ocean Protect) explains the deficiencies within SQIDEP, how SQID proprietors are subsequently able to exaggerate performance claims, and the associated implications to the design (and ultimate function) of SQIDs. This is anticipated to assist designers and regulators in their understanding of SQIDEP and alternative SQID protocols.
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Ocean Protect webinars are for general discussion purposes, and the views expressed by presenters and attendees are opinions only. Care has been taken in the preparation of the webinars, however no guarantee, representation or warranty is given or made as to the accuracy or completeness of the information conveyed. Personnel seeking information relevant to their own personal circumstances should seek independent advice as appropriate. To the maximum extent permitted at law, IES Stormwater Pty Ltd and its affiliates, and the presenters and attendees of the webinars, exclude liability for any loss or damage to any party caused by or arising from reliance on its content.