Effectiveness of Health Impact Assessment (HIA) in Thailand: a case study of a Potash mine HIA in Udon Thani, Thailand

While health impact assessment (HIA) theory and practice has emerged worldwide to consider ‘human health’ as a core component of sustainable development, the benefits gained from HIA have been questioned. The ways people perceive HIA seem to be context specific and, therefore, this research aims at reviewing the aspects of HIA theory, practice, roles, and its contributions to the development of policymaking and projects/programmes in the Thai context. Procedural, substantive, transactive, and normative effectiveness were conceptualised using a criteria-based framework for HIA in this study. The framework was applied to measure the effectiveness of a community HIA case study, previously conducted for Potash mine development in Udon Thani, Thailand. Documentary analysis and both semi-structured and unstructured interviews (30 cases) were conducted. Procedural and substantive categories, driven by legal regulations, were found to be critical in influencing the application of HIA in decision-making. Levels of involvement in the HIA process were critical determinants of the interviewees’ ability to share their perspectives on transactive and normative effectiveness. Human resource and capacity building were also found to be crucial components influencing the effectiveness of HIA. The four effectiveness categories tend to have connections between one another. These connections were shaped by the components within the context: public demand for HIA; knowledge and financial supply; voluntary cooperation of the practitioners; and political context. In conclusion, HIA is expected to contribute multiple roles in Thai society. Key elements to consider for the improvement of the effectiveness of HIA in Thailand are the provision of policy and a regulatory framework for HIA implementation, capacity building and knowledge production at all levels and providing human resources for HIA practice and development

Investigating the effectiveness of mandatory integration of health impact assessment within environmental impact assessment (EIA): a case study of Thailand

The effectiveness of the integration of health impact assessment (HIA) and environmental impact assessment (creating an environmental and health impact assessment’ (EHIA) process) is investigated, drawing on an example of a mandatory requirement in the power plant project sector in Thailand. The analytical framework is based on that outlined in by the authors in 2013, focusing on procedural, substantive, transactive and normative effectiveness criteria, and the evaluation served also to critique this framework in practice. Using documentary analysis and interviews, it was found that a sample of EHIAs are partially effective from the four perspectives of effectiveness. The findings suggest that integrating HIA and EIA still has a long way to go to achieve effective practice. Insufficient resources have been allocated to deliver the level of public participation expected in the regulations, or a sufficient standard of EHIA practice and monitoring. The existing analytical framework was found to be inadequate for transactive effectiveness, and a new criterion added: T5 – Availability of human resource in EHIA practice. Recommendations are provided to support the practical integration of HIA into EIA practice in Thailand

Evolution or revolution? Reflecting on IA effectiveness in Thailand

This paper investigates whether the Thai impact assessment (IA) system should develop through revolution or evolution. A timeline of the Thai IA system is mapped to show its development to date. Aspects of effectiveness (i.e. procedural, substantive, transactive, and legitimacy) are then used as the benchmark against which to evaluate past IA practice in terms of strengths, limitations and challenges. IA practice is analysed both in terms of the people within the IA system and the IA system itself, as both are considered key elements in making IA work. The findings suggest that the ongoing evolution of the IA system has continued to improve its procedural, substantive and transactive effectiveness; therefore, suggesting that continuing evolution is sufficient to deliver these dimensions of effectiveness. However, the findings also indicate that it is the people in the IA system that influence practice and arbitrate legitimacy. Developing the system over time has not significantly improved legitimacy, leading to the conclusion that gaining legitimacy in the IA process might need some elements of revolution

Investigating the Effectiveness of Strategic Environmental Assessment in Thailand

Strategic environmental assessment (SEA) was introduced in Thailand in 2005, aiming to direct decision making at the strategic level (policy, programme, plan) towards sustainable development (SD). Given reforms to the SEA requirements in 2018, it is timely to evaluate emerging SEA experience in the Thai context to inform future practice. The effectiveness of 14 SEAs was investigated based on a version of a recently published framework which substitutes ‘legitimacy’ for normative effectiveness and pluralism, modified through the addition of disaggregated sub-criteria associated with each dimension of effectiveness (procedural, substantive, transactive and legitimacy), to facilitate a richer understanding of the effectiveness of practice. This more detailed effectiveness framework enabled a comprehensive evaluation of practice, and should be transferable to other contexts. The findings suggest that SEA in Thailand currently partially achieves procedural, substantive, and transactive effectiveness. Achieving some elements of substantive effectiveness where practice is currently weak is considered to be particularly challenging, and also determinative in the achievement of legitimacy. Consequently, the majority of SEAs evaluated in this study failed to achieve legitimacy

The role of impact assessment in the development of urban green infrastructure: a review of EIA and SEA practices in Thailand

Impact assessment (IA) processes can potentially play important roles in driving green infrastructure (GI) planning and design, as well as establishing how GI can contribute to environmental planning objectives. In this paper, we explore how IA (strategic environmental assessment–SEA and environmental impact assessment–EIA) can support the development of GI in Thailand. A framework is designed which is used to reflect on how IA addresses and integrates GI in development at strategic and project levels. Based on a review of 18 EIAs and 4 SEAs from Thailand, it is established that whilst the consideration of GI in SEA (which is not yet compulsory in Thailand) has remained limited, consideration of green spaces for mitigating negative impacts in statutory EIA has been happening frequently. An important reason for this is that regulatory requirements imply that EIA should consider GI (referred to as ‘green spaces’). An important recommendation arising is that GI functions should be addressed in IAs, on the one hand to integrate different policies related to GI; and on the other hand to strengthen implementation of urban GI development

Conceptualising the effectiveness of impact assessment processes

This paper aims at conceptualising the effectiveness of impact assessment processes through the development of a literature-based framework of criteria to measure impact assessment effectiveness. Four categories of effectiveness were established: procedural, substantive, transactive and normative, each containing a number of criteria; no studies have previously brought together all four of these categories into such a comprehensive, criteria-based framework and undertaken systematic evaluation of practice. The criteria can be mapped within a cycle/or cycles of evaluation, based on the 'logic model', at the stages of input, process, output and outcome to enable the identification of connections between the criteria across the categories of effectiveness. This framework is considered to have potential application in measuring the effectiveness of many impact assessment processes, including strategic environmental assessment (SEA), environmental impact assessment (EIA), social impact assessment (SIA) and health impact assessment (HIA)

Contextual attributes associated with public participation in environmental impact assessments in Thailand: Perspectives obtained from authorities and academics

Context can enhance or hinder public participation (PP) in environmental impact assessments (EIAs). This study aimed to investigate and discuss how PP-related contextual attributes influence the quality of PP in Thai EIA processes. The study adopted the qualitative approach and interviewed 20 key informants with insightful PP-associated experience in Thai EIAs. The results showed that four major groups of contextual attributes are believed to influence PP in Thai EIAs: the legal and political frameworks, the capacities of key actors, environmental awareness and the right to participate in decision-making processes, and cultural context. The greatest strength of PP in Thai EIAs is that PP is mandated by law, followed by increased environmental awareness and the right to participate in the decision-making process. Different key actors such as project owners, consultants, non-governmental organizations, and reviewing agencies encounter difficulties in discharging their prescribed functions, which affects the quality of PP. The authoritarian culture of Thai society also prevents PP in EIAs. The study offers certain recommendations, including public communication about how civic inputs can influence decision-making processes, the employment of social sector specialists to facilitate PP in EIA, and the application of appropriate participation techniques associated with the prevailing culture