Auditing the Socio-economic Impacts of a Major Construction Project: The Case of Sizewell B Nuclear Power Station

Andrew Chadwick and John Glasson

Journal of Environmental Planning and Management, 1999, vol. 42, issue 6, 811-836

Abstract: This paper presents the findings of a post-auditing study which compares the actual and predicted socio-economic impacts (including traffic) of a major power station construction project in the UK. An attempt is made to determine the accuracy of the predictions presented at the public inquiry into the development, drawing on the results of a developer-funded monitoring exercise undertaken for the duration of the eight-year construction programme. The study found that a very high proportion of testable predictions prepared prior to the inquiry could be audited; of these, 60% were either within predicted ranges or accurate to within 20% of predicted values. However, one in seven predictions had errors of more than 50%. The study revealed no consistent bias towards either under- or over-estimation of impacts. The paper explores the reasons for the predictive errors identified in the study; these include a range of project-specific and more generic factors, several of which are likely to be applicable to other large-scale construction projects. The study is particularly useful in the field of EIA because it relates to several weak areas in current practice: the assessment of socio-economic impacts, construction effects, and monitoring and auditing.

Date: 1999
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DOI: 10.1080/09640569910849

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