DesignFlow

Policy, Guidelines and Training
Queensland State Planning Policy for Healthy Waters
Client: Department of Environment and Resource Management
Since 2008, the Queensland State Government has been planning and establishing the State Planning Policy for Healthy Waters. The policy was released in May 2011 and required an extensive roll out of information sessions and training to the local government, development and consulting industry. Shaun Leinster assisted DERM and Water by Design deliver these sessions throughout Queensland. His close involvement in development of the stormwater objectives, authoring of the business for DERM and detailed understanding of water sensitive urban design implementation was an important part of the information sessions.

The policy is not stagnant. It will be updated and refined from time to time based on feedback from everyone involved in its implementation. DesignFlow are actively involved in providing feedback on the policy as well as discussion implementation issues with the industry.
 

Review of Victorian Urban Stormwater Best Practice Environmental Management (BPEM) Guidelines
Client: Melbourne Water/EPA Victoria
These Guidelines define Victorian environmental stormwater management standards. The standards are being updated to reflect the latest research and industry experience. The new standards will include more robust water quality standards plus a suite of practical flow regime standards that will protect waterways from changes in runoff patterns. The overall guideline is being refined to complement related documents and recognise the importance of achieving best practice for all stages of the life cycle of environmental stormwater management. DesignFlow is working closely with a Technical Reference Committee (academics and government experts) to ensure a transparent and rigorous approach to the guideline update.  

BPEM1  

 
WSUD business case
Client: The South East Queensland Healthy Waterways Partnership
The SEQ Healthy Waterway Partnership have identified that a lack of understanding of the economic merits of WSUD is a significant impediment to the uptake of WSUD by the broader development community. DesignFlow are conducting analyses with Marsden Jacobs to provide solid economic justification for the implementation of WSUD.
 

 
Deemed to comply solutions
Client: The South East Queensland Healthy Waterways Partnership
In order to streamline the development assessment process, DesignFlow are developing standard WSUD solutions to simple development types in Queensland. It is envisaged that local governments can adopt these solutions to simplify the reporting and development assessment process for both DA teams in Council and applicants.
 
Deemed to Comply  

 
MUSIC guidelines for SEQ
Client: The South East Queensland Healthy Waterways Partnership
MUSIC has become the standard industry tool for modelling conceptual stormwater quality strategies. It was recognised that the preparation of MUSIC models by WSUD specialists and the assessment of these models by development assessment teams in Council requires detailed guidance. SEQ Healthy Waterway Partnership have commissioned DesignFlow in collaboration with WBM Oceanics to develop a MUSIC guideline that provides guidance to the development industry and DA teams to accurately model conceptual WSUD strategies in SEQ.
 

 
WSUD Technical Design Guideline, SEQ
Client: The South East Queensland Healthy Waterways Partnership
DesignFlow, with assistance from Cardno Splat, rewrote the bioretention chapter of the South East Queensland Technical Design Guidelines to provide more complete guidance that incorporates engineering, landscape and ecological design considerations. Recent bioretention research conducted by the Facility for Advanced Water Biofiltration (FAWB) and others was used to inform design advice. The chapter includes a detailed worked example to assist practitioners interpret the design advice. DesignFlow have prepared updated engineering content for three other chapters of the guideline.
 

 
WSUD standard drawings
Client: The South East Queensland Healthy Waterways Partnership
The SEQ Healthy Waterway Partnership identified a need in the stormwater management industry for detailed design guidance in addition to the Water Sensitive Urban Design Technical Design Guidelines (June 2006). DesignFlow has been commissioned by the SEQ Healthy Waterway Partnership to develop standard drawings to illustrate the key features of detailed designs of vegetated stormwater treatment elements.
 

 
Construction and establisment guidelines: bioretention, swales and wetlands
Client: The South East Queensland Healthy Waterways Partnership
DesignFlow recently delivered the Construction and Establishment Guidelines to the SEQ Healthy Waterway Partnership to provide detailed guidance to civil and landscape contractors and council compliance officers, including certification requirements and checklists to assist in the delivery of bioretention basins, constructed wetlands and swales.
 
Deemed to Comply  

 
Bioretention Training - Fundamentals and Advanced
Client: The South East Queensland Healthy Waterways Partnership
The training course provides practitioners with an understanding of bioretention system processes and design issues. It covers the science behind how and why bioretention systems work, urban design principles relevant to bioretention layout, design methodology and an overview of construction and establishment considerations. DesignFlow staff developed the course material and regularly deliver courses to government and industry.
 

 
Construction and establishment of vegetated stormwater management systems training
Client: The South East Queensland Healthy Waterways Partnership
This course provides a suite of resources to facilitate successful delivery of wetlands and bioretention systems. It covers construction roles and responsibilities, important civil and landscape construction considerations, temporary protection of systems during construction phases and landscape establishment. DesignFlow developed the course material and deliver courses to government and industry.
 

 
Introduction to WSUD Training, Melbourne
Client: Clearwater
DesignFlow developed material for this training course and delivered courses to staff from a range of Councils and other agencies. The course covered all aspects of integrated water management including storm water treatment and harvesting, potable water reduction, microclimate impacts of WSUD, asset management and simple assessment tools. Feedback from participants included:"excellent presenter-very knowledgeable", "presenter very engaging" and "good balance between planning and engineering perspectives".
 

 
WSUD on Flat Sites
Client: Mackay Regional Council
Given the very flat topography across much of the Greenfield development land in Mackay, Council identified the need to provide design guidance to the industry on how to deliver water sensitive urban design solutions on flat development sites. DesignFlow in collaboration with v2i and Aurecon developed this guidance material which included the following:
  • Standard road cross sections for Mackay that allows space in the verge for streetscape bioretention systems.
  • Detailed functional civil plans and landscape plans of a number of streetscape bioretention options to illustrate how the standard steetscape bioretention cross section can be applied in a development context.
  • Broader urban design solutions for a large development site to illustrate how the road, earthworks and drainage should be configured on flat sites to allow for streetscape bioretention while minimising earthworks and stormwater drainage (i.e. pipes).

 
Eyre Peninsula Stormwater Outfall Guidelines
Client: Eyre Peninsula Natural Resources Management Board
Current coastal outfalls across Eyre Peninsula (in the west of South Australia) are typically drainage pipes discharging directly into the coast. The pristine coastal environments are extremely valuable for aquaculture, tourism, conservation and recreation. This lead The Eyre Peninsula Natural Resource Board to commission DesignFlow to investigate current on the ground and planning practices , propose best practice WSUD objectives, develop easy to install model designs and prepare remedial infrastructure plans for ten coastal towns across the Peninsula.
 
The outcome of the work was individual guidelines for each town that identifies WSUD retrofit works that are ground truthed, sized and feasible. In addition sizing guidance for wetlands, infiltration basins and raingardens are provided to allow individual designs to be developed by local councils.
 
The works also proposed ten priority works across the Peninsula. Three of the projects have been funded and are due for construction in 2011.
 
Eyre Peninsula  

 
Mackay Stormwater Treatment Offsets
Client: Mackay Regional Council
In response to allowing Mackay Regional Council greater flexibility in meeting State Planning Policy management objectives for water quality, a regional approach to water quality improvement was identified. The offset approach allows Council to raise funds to undertake targeted works, such as riparian restoration, cane farm wetlands and regional wetlands in degraded floodplain zone.

DesignFlow, in consultation with Council, developed a voluntary stormwater quality offset policy. The policy recognises varying development types and waterway conditions and providers developers two levels of offsets depending on the setting of the proposed development. Cost metrics were developed and consultation with industry undertaken to finalise the policy.  
 
Mackay_offset1  

 
Water Sensitive Urban Design Asset Management Guidelines, Queensland
Client: The South East Queensland Healthy Waterways Partnership
DesignFlow has recently authored a rage of asset management guidelines for Water by Design. These are listed in the Stormwater Asset Management page of this website.
 

 
Gold Coast Stormwater Management Objectives
Client: Gold Coast City Council
Gold Coast City Council have been applying a set of stormwater management objectives for over 10 years. These include a number of hydrologic management objectives which Council have not been strictly applying for a number of reasons. DesignFlow, in collaboration with Bligh Tanner, were commissioned by Council to review these hydrologic management objectives and recommend changes to the objectives to ensure it is clear when the objectives should be applied and what the compliance method is. Furthermore, DesignFlow were asked to review the waterway stability objective and frequent flow objective proposed in the State Planning Policy for Healthy Waters and provide recommendations regarding implementation on the Gold Coast.

The assessment involved detailed technical assessment of the objectives across a number of case studies. The work found that Council should update the hydrologic objectives and delete some of the old objectives. It also found that Council should establish its own version of the frequent flow objective for the Gold Coast.