Stormwater seminars
Abstracts and presenter profiles - sessions 1 & 2
Presentations, abstracts and presenter profiles on this page include:
- Cr Dianne Glenn
- Matthew Davis
- Grant Barnes
- Judy-Ann Ansen
- Shane Kelly
- Malcolm Green
- Roger Syeb
- Mark Lewis
Cr Dianne Glenn
Opening address
Auckland Regional Council
Dianne Glenn is the elected representative for Franklin and Papakura on the Auckland Regional Council (ARC), a role she has held since 1998. Cr Glenn takes an active interest in the management of all forms of water and her comprehensive understanding of the issues assists her in her roles as chair of both the ARC’s Environmental Management Committee and resource consent hearing panels.
She is a keen advocate for the sustainable management of water and low impact design and promotes these values and actions to architects, builders and property developers. She is also a strong advocate for helping communities to make improvements to their local environment, including through championing the ARC’s Environmental Initiative Fund and Coastal Enhancement Fund, which have awarded over $6 million since 2000.
Matthew Davis
Stormwater management now and in the Auckland Council
Abstract:
For several decades stormwater management has been recognised by the Auckland councils as a major issue within the region. A substantial step in addressing stormwater quality began with the development of Technical Publication 10 (‘Design Guideline Manual: Stormwater Treatment Devices’) in 1992 to help the industry and the region to provide consistent standard of design for stormwater treatment devices. Another significant step was the the establishment of the cross-council endorsed 10-year Stormwater Action Plan in 2004. Today, through a collective effort, approximately 60 per cent of the region’s urban network is covered by integrated catchment management plans (ICMPs) that address stormwater quality, while the remaining plans are in development. Flood control and stormwater treatment devices have been constructed throughout the region in accordance with the ICMPs and TP10. Important contaminant studies of the Central Waitemata and Southeastern Manukau Harbour have been completed, and the region’s best practice stormwater guidelines are being updated with the latest research findings. This presentation reflects on examples of best practice, and environmental and community gains made by the councils, industry and communities to date. This will be followed by a brief discussion of the challenges and opportunities for the new council in the area of stormwater management.
Presenter profile:
Matthew Davis is Acting Group Manger of Partnerships and Community Programmes at the Auckland Regional Council (ARC). Previously he led the ARC’s Stormwater Action Team and was technical manager of Auckland City Council and Metrowater’s Integrated Catchment Study. Matthew has worked in integrated water resource management, flood plain management, water allocation, groundwater management and assessment of environmental effects in New Zealand and overseas. He has experience in the private and public sectors, and as researcher at the University of California, Davis.
Grant Barnes
State of the Auckland environment
Abstract:
The 2009 State of the Auckland region report presents the health of the region’s air, land, water and biodiversity. It is a picture built up over decades from the Auckland Regional Council’s extensive monitoring and research programmes. The report’s findings present a mixed picture for the region’s environment, and this presentation outlines this situation. The Auckland region’s large and growing population is placing huge pressure on the environment through land and energy use, transport and waste. Collectively, we have achieved some important gains but environmental degradation continues. The report is a useful resource for the new Auckland Council to help it respond to ongoing and new environmental challenges in an integrated manner.
Presenter profile:
Grant Barnes is Group Manager of Monitoring and Research at the Auckland Regional Council (ARC) and manages the state of the environment monitoring and reporting. Grant has 13 years experience in regional and central government, initially in natural resource science and latter as manager of science provision for the ARC. Throughout his career Grant has been interested in understanding the dynamics of major driving forces and pressures and their impacts on natural systems and communities.
Judy-Ann Ansen
Stormwater contaminants
Abstract:
This abstract will be posted shortly.
TP10 update and proprietary device evaluation protocol (PDEP) guidelines
Abstract:
The Auckland Regional Council is currently updating Technical Publication 10 ‘Design Guideline Manual: Stormwater Treatment Devices’ (TP 10).This presentation discusses the current work to review and update TP10, addressing technical design, construction and maintenance issues. The updated TP10 will support policy and planning yet remain strictly a technical guideline. The updated guideline will maintain designs to meet 75 per cent total suspended solids (TSS) removal. However, it will also provide for designs that remove a range of TSS removal other than 75 per cent TSS, as well as address removal of other contaminants. Individual Technical Reports are being prepared for each stormwater treatment device. These Technical Reports include a literature review, assumptions, worked examples, and reasons for decisions that lead to the final revised design. Subsequently, the design portion of the technical reports will be extracted to create a final TP10, thereby progressively compiling what will become the updated TP10, which will be known as Guideline Document GD001. Technical Reports have been prepared for landscaping and planting; construction, operation and maintenance; ponds; rain tanks; permeable paving; and green roofs. Technical Reports are in preparation for rain gardens and wetlands. Proprietary devices, currently addressed in Chapter 15 of TP10, will be dealt with in a separate document, GD003. An outline of the process to evaluate a proprietary device is provided.
Presenter profile:
Dr Judy Ansen is an environmental scientist with 14 years experience in resource management and specifically in soil contamination, air quality, wastewater and stormwater. Judy is currently seconded to lead the Auckland Regional Council’s Land and Water team but continues to manage stormwater projects including update of Technical Publication 10 and the Proprietary Device Evaluation Protocol for the Stormwater Action Team.
Shane Kelly
Stormwater and ecological effects
Abstract:
Studies on the ecological effects of stormwater indicate that stormwater runoff and management practices can profoundly affect the extent, quality and ecological function of receiving environments. Urban streams are particularly vulnerable and frequently display a consistent response to urbanisation, which has lead to the term “urban stream syndrome” being used to describe the changes that occur. Coastal habitats are also affected by changes in the quantity and quality of stormwater runoff, but the key stressors and ecological responses differ between freshwater and marine systems. This presentation summarises stormwater stressors in freshwater and coastal habitats and reviews published information on the ecological impacts of stormwater in each ecosystem.
Presenter profile:
Dr Shane Kelly is an environmental scientist with a background in catchment management and urban stormwater contamination. For five years he was Project Leader/Principal Advisor in Environmental Research and Monitoring at the Auckland Regional Council (ARC). During this time he ran the ARC’s marine ecology, coastal water quality, and sediment and shellfish contaminant monitoring programmes, and led a number of research investigations. Shane also provided technical input into major stormwater and infrastructural consent and planning processes. He currently manages his own environmental consultancy, Coast and Catchment Ltd, which provides advice and research on marine ecology, fisheries, conservation, and contaminant, resource and catchment management.
Malcolm Green
Long term projections for stormwater and sediment in the Waitemata and Manukau harbours
Abstract:
Estuary contaminant-accumulation models were constructed for the the Central Waitemata Harbour and the Southeastern Manukau Harbour. The central question now is: what needs to be done, and where, in order to achieve environmental goals in the harbours? To answer this, we can rank the scale of predicted ecological effect in each subestuary, and the potential for mitigation in each subcatchment. The subcatchments where opportunities for mitigation are high and where that mitigation will result in improved outcomes in subestuaries with high risk of adverse ecological effects are the best candidates for intervention. The presentation will also briefly cover the converse way of looking at managing contaminants, which involves consideration of estuary assimilative capacity which can open the door to managing cumulative effects of contaminants.
Presenter profile:
Dr Malcolm Green is Principal Scientist, Coastal Physical Processes at the National Institute of Water and Atmospheric Research (NIWA). He has a PhD from the Virginia Institute of Marine Science and a BSc from the University of Sydney. His research interests are sediment transport, waves and boundary-layer flows in estuaries. Most recently he has built computer models to predict sedimentation and heavy-metal accumulation in estuaries, which have been applied in a range of projects in the Auckland region.
Roger Syeb
Wetlands
Abstract:
The Auckland Regional Council is currently updating Technical Publication 10 'Design Guideline Manual: Stormwater Treatment Devices' (TP10). This presentation provides a summary of a recent literature review of wetlands and the existing TP 10 chapter. The focus of the review was to collate and analyse literature relating to constructed wetlands used for stormwater treatment and flood attenuation. Outcomes of the review are being used to assist in the preparation of revised guidelines for stormwater wetland design. The primary objective of the review was to assess the existing design procedure and determine whether the current methodology is satisfactory for continued use.
The review identified three main methods for constructed stormwater wetland design; catchment area or volume ratios, hydraulic retention and the k-c* model. These were used to calculate hypothetical wetland sizes for comparison to sizes from the existing design method in TP10 or compare expected performance to the TP10 method. The presentation summarises key results of the literature review, the design methodology review and important features of constructed stormwater wetland design.
Presenter profile:
Roger is a stormwater engineer with Pattle Delamore Partners and is based in Auckland. He works in the fields of catchment management, stormwater treatment design, contaminant assessment, low impact stormwater design and environmental policy. He has considerable experience in surface water assessment, design and construction. Roger has a strong interest in stormwater hydraulics, the interaction of contaminants and treatment processes and this played a large part in contaminant assessment and treatment work he carried out for Auckland City Council and Metrowater as part of their network consent discharge application. He previously worked on the development of the second edition of TP10 (published in 2003) and more recently completed a literature review of the design methodologies of constructed stormwater wetlands as part of the current review of TP10.
Mark Lewis
Landscape and ecology
Abstract:
The Auckland Regional Council is currently updating Technical Publication 10 ‘Design Guideline Manual: Stormwater Treatment Devices’ (TP 10). This presentation addresses one topic of the update: ‘Landscape and Ecology Values within Stormwater Management’, which promotes the potential benefits of landscape design approaches to stormwater management for enhanced water quality treatment, ecological function, and landscape values. It is based on three levels of specificity: broad landscape and ecology principles, technical specifications and recommendations for individual types of stormwater management devices (wetland-ponds, greenroofs, bioretention devices, and swales).This presentation summarises the new guidance on landscape and ecology values, with specific regard to the wetland-pond chapter.
Presenter profile:
Mark is a senior landscape ecologist with Boffa Miskell in Auckland. He has been actively employed in the fields of landscape planning and restoration ecology in New Zealand and the United States for ten years. Mark’s diverse training and experience in multi-disciplinary projects provides him with a working knowledge of catchment management, low impact design, and ecological restoration. He has facilitated working groups with a range of professionals to manage land development, infrastructure, and ecological enhancement projects.
