All input and waste streams were sampled during the pilot. Testing was preformed for a wide range of chemicals including PCB congeners, dioxan/furans, semivolatile organic compounds, volatile organic compounds, and heavy metals. The glass aggregate was subjected to both ASTM water leaching procedures and SPLP procedures. Results of the testing showed that on a stack basis >99.9999% of the PCB was destroyed, achieving the destruction efficiency required under the Toxic Substances Control Act (TSCA). The results of the glass aggregate leach testing showed the material passed standards used by WDNR to grant a Low Hazard Exemption from solid waste rules for this material.
Final unit cost will depend on the beneficial re-use of the material and the value in those markets. However, even with a nominal resale value of $2 ton/glass the unit cost for this technology is significantly less that other commercially available thermal treatment technologies. Unit cost for the most effective treatment of the tonnage of sediment estimated to be removed from Operable Units 3 and 4 of the Lower Fox River ranges from $32 to $41/ton dredged and dewatered sediment (assuming 55% solids). This unit cost does not include dredging and dewatering and therefore is functionally equivalent to a tipping fee at a landfill.