Inorganic geochemistry of the groundwater at the Smithville site - Phase I investigation / by L. Zanini, K. Novakowski and P. Lapcevic. : En13-5/97-128E-PDF

"This report presents the results of an extensive groundwater sampling program undertaken in February/March 1997 as part of ongoing GWRP studies at Smithville ON. Samples were obtained from 46 different zones in seven boreholes. The primary purpose of this sturdy was to aid in the development of a detailed conceptual model of groundwater flow and contaminant transport in the fractured bedrock underlying the CWML waste site. The work is unique in developing techniques for effectively characterizing the geochemistry of fractured rock systems and in the detailed nature of the investigation. The results indicate that Fe reducing zones exist closest to the ground surface where the groundwater is considered to be in a post-oxic state. The transition from post-oxic conditions to more anaerobic conditions occurs with increasing depth where S04 reducing conditions prevail"--Management perspective.

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