Jennifer Pope

Since its inception, impact assessment (IA) has been perceived by many to be a largely technical, quantitative exercise. However, as jurisdictions shift towards a more sustainability-oriented IA that accounts for a wider range of social, cultural, economic, health and well-being, and equity implications of proposed projects and strategic initiatives, values and subjectivity come more to the fore. Making predictions now needs innovative, and rigorous applications of qualitative methods that enable meaningful inclusion of diverse knowledges, values, and information sources, whilst at the same time giving confidence to decision makers and other stakeholders about the evidence base. Adopting such qualitative methods in practice is hindered by a lack of clarity of the role of qualitative methods in the delivery of sustainability-oriented IA. Guided by findings from a thematic analysis of primary data gathered through an international survey supplemented by semi-structured interviews and a workshop, the novel contribution of this paper is to clarify how and why qualitative methods can best contribute to the effective delivery of next generation IA.

Environmental impact assessment (EIA) involves assessing the implications of proposed activities on the environment to inform decisions about whether those actions should proceed and under what conditions. Efforts are being made to incorporate climate change considerations into EIA internationally, but the assessment of greenhouse gas (GHG) emissions poses particular challenges. This article compares the incorporation of GHG emissions into EIA in two jurisdictions: Canada (under the Impact Assessment Act 2019) and Western Australia (under the Environmental Protection Act 1986). Four questions are considered, relating to screening and scoping; information requirements; decision-making and condition setting; and post-approval activities. Key differences between the two jurisdictions were found in relation to screening and scoping (Western Australia applies an emissions threshold while Canada utilizes a project list coupled with tailored guidelines); decision-making (Western Australia generally considers a straight line trajectory to net zero by 2050 as acceptable whereas Canada considers emissions in the context of international commitments and against other sustainability considerations); and post-approval activities (a strength of the Western Australian system is mechanisms enabling review and tightening of GHG conditions over time). It will be important to continue to review the effectiveness of EIA as a tool for climate mitigation as practice evolves.

Environmental Impact Assessment (EIA) aims to embed consideration of the significance of predicted environmental consequences (the findings) of proposed developments into approval decision making. Achieving this aim relies on adequate communication of the findings of the EIA to the stakeholders, especially the decision makers responsible for the approval decision. However, the naïve assumption that this communication of findings can be effectively achieved through the publication of a written report pervades legislation worldwide, despite decades of evidence to the contrary. As a first step towards improving such communication, this research identifies the contingent conditions associated with effectively transferring EIA findings from an Environmental Impact Statement (EIS) to decision makers and other stakeholders based upon literature review. The transmission of meaning is found to be the major theme underpinning good communication, subdivided into discourse, readability, and legitimacy. Based on a clearer understanding of the limitations associated with an EIS as a communication medium, and acknowledging there are likely to be better mechanisms for transferring the meaning of the findings of an EIA to decision makers and other stakeholders, a pragmatic research agenda is outlined. This includes some initial suggestions of other research fields (like semiotics and social psychology), or technologies (like AI) that may provide learning and improvement opportunities.