Geochemical Modelling of Pit Lake Water Chemistry to Support Management Decisions

Geochemical Modelling of Pit Lake Water Chemistry to Support Management Decisions

Mike Mueller (Hydrocomputing, Germany), Katja Eulitz (Hydrocomputing, Germany), Clint McCullough (MiWER), Mark Lund (MiWER)     How does pit lake water quality and depth change under different management scenarios? Stage 1. Selection of appropriate model This model will maximise the use of the currently available data for model creation and validation. The current preference is not to focus on a single pit lake and model in detail but develop a simpler model that can be easily applied to cohorts of Collie pit lakes identified by the inventory collection and conceptual modelling. This general model would be less detailed but more suited to…

Conceptual Modelling of Pit Lake Processes and Ecological Risk

Conceptual Modelling of Pit Lake Processes and Ecological Risk

Clint McCullough (MiWER), Mark Lund (MiWER) Conceptual modelling to better understand ecological risks posed by pit lakes To ensure greatest scientific robustness of conceptual models we held a site visit and workshop in Collie with an expert panel of scientific researchers and managers from universities and State regulatory staff to best understand how these processes are likely working in different pit lakes. This workshop identified conceptual model needs e.g., a carbon cycling model and an acidity budget model. The intent is to then present the conceptual models as diagrammatic representations highlighting the nature of relationships between parameters and processes. These models will also…

Assessment of the Effects of Pit Lakes on Human Health

Assessment of the Effects of Pit Lakes on Human Health

Andrea Hinwood (CEM), Jane Heyworth (UWA), Helen Tanner (CEM), Clint McCullough (MiWER) Do pit lakes present a hazard to human health? Government and community stakeholders have expressed concerns about how open cut mining operations may affect human health and wellbeing through modified surface and groundwater regimes and their follow-on effects on environmental contamination and disease propagation. This project used Collie as a case-study to investigate how the formation of pit lakes may degrade or even improve health outcomes for mining communities living with these legacies. This project aimed to examine possible impacts of human interaction with pit lakes. The project…