Environmental Data Management, Former Aluminum Smelting Facility

Our team conducted statistical trends analysis using non-parametric techniques to evaluate the long-term trends in fluoride concentrations in a large number of groundwater monitoring wells screened in four different water-bearing geologic units at the site in order to support the five-year review process. The assessment provided a statistical basis for identifying areas where the remedy was effectively reducing fluoride concentrations in groundwater over time and areas where concentrations were increasing due to unintended effects of the remedy.