Understanding Current Challenges in Evaluating Environmental Impacts for Aggregate Producers through a Case Study in Western Sweden

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Abstract
To improve environmental performance of a product or activity, an understanding of the environmental impacts associated with it is needed. Quantification of environmental impacts can be achieved through the standardized measurement-based tool of Life Cycle Assessment (LCA). However, challenges occur when trying to apply a standardized tool to a nonstandardized industry such as the aggregate industry. This study aims to provide greater understanding of the challenges facing the aggregate industry, particularly producers, in applying LCA. This was conducted through a literature review, to establish the current understanding of challenges, accompanied by a case study where a site-specific LCA was conducted with a large enterprise at a crushed-rock-production facility in western Sweden, to gain new industry-specific insight. A total of 13 challenges were identified: seven methodological and six systemic. Out of these 13 challenges, 3 were deemed a high risk to the implementation of LCA by aggregate producers, and 3 to the integrity of results. A best-practice framework is suggested to incorporate LCA into current environmental management techniques utilized at quarry sites in Sweden to overcome some challenges. However, LCA used for environmental management should not lead to double work if LCA is being utilized for Environmental Product Declarations, and further research is encouraged to find appropriate solutions with the most efficient allocation of the resources needed in conducting LCA studies.

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