Start Date: May 17, 2005
End Date: May 16, 2010
The first part of this study will focus on the identification and quantification of potentially hazardous organics and trace metals in waste sands from ferrous and non-ferrous foundries. As organics and/or trace metals of environmental concern are identified, studies will be conducted to determine their movement potential. Major routes of transport will be investigated and lead to management practices to reduce or eliminate their transport. Blending waste sands with organic amendments will be investigated as a potential means to mitigate these constituents. Investigations will also be conducted to determine if waste foundry sands present a risk to commonly used biological indicators, including soil microorganisms, earthworms, and plants. Bioaccessible trace metals in waste foundry sands, associated with human exposure, will be assessed using an in vitro gastrointestinal method. Finally, to assess the suitability of using waste foundry sands in horticultural and agricultural settings, data from the above mentioned studies will be used to develop a comprehensive risk assessment.