Matt Wickham

This technical memorandum summarizes conceptual level sampling locations, sampling frequency, and laboratory testing to be conducted on tailings and the associated decant pond.

Predictions of the chemical compositions of tailings porewater and seepage during the mine’s operation and after closure is the focus of this document.

Phase I consists of the hydrologic and geologic characterization of the study area. Also presented are the definition and quantification of groundwater recharge sources, pumpage, subsurface inflows and outflows, and recommendations to fill critical data deficiencies.