Presenters: Joanne Ferry, Tonkin & Taylor Ltd
Presentation title: The search for a sustainable remediation assessment methodology in Australia and New Zealand
This paper describes a simple sustainable remediation (SR) screening-level methodology which SuRF ANZ (Sustainable Remediation Forum – Australia New Zealand) proposes for initial application in ANZ. There is typically little overt consideration of the sustainability of remediation methods throughout New Zealand and Australia other than calculation of greenhouse gas (GHG) emissions for the specific remediation option (e.g. thermal desorption). However the sustainability of remedial activities is becoming more topical on both sides of the Tasman. Many public sector tenders are beginning to request inclusion of sustainability goals but there are no explicit national SR requirements. This situation may change in Australia once the Australian Remediation Framework is drafted. The methodology presented in this paper is a Tier 2 method (semi- quantitative assessment described by SuRF UK) which describes a simple way of comparing remediation strategies and methods. To demonstrate the methodology, remediation of a hypothetical small contaminated industrial site located on the outskirts of a city for ongoing commercial / industrial use is assessed. Development of this ANZ methodology has demonstrated the benefits of considering the sustainability of remediation options under consideration. Conclusions from the methodology development include: – While the results of a Tier 2 process may be equivocal for options with similar scores, the identification of extremes is likely to be meaningful; – Choice between remediation options with costs, timescales and sustainability characteristics requires detailed Tier 3 (quantitative assessment) sustainability analysis; – Lack of ANZ methodological experience in analysts necessitates an iterative analytical approach as project technical assumptions are refined and as stakeholders perceptions and priorities change; – A technical team-based approach, featuring consideration of a wide range of options, and interaction with stakeholder groups, is considered necessary for the methodology to be effective; – These requirements may encounter challenges under current ANZ remediation business models.
Event: WasteMINZ Conference 2014
Date: Wednesday 23 October 2014