What sampling has been done of the water and sediment in the Schuylkill River?

There has been no direct sampling conducted by Evergreen in the Schuylkill River. An ecological risk assessment has been completed, which evaluated site conditions in relation to the surface water and sediment in the Schuylkill River. This will be submitted after the RIRs are approved in accordance with the Act 2 requirements. Going forward, the groundwater model, which includes a surface water model that is completed in conjunction with the fate and transport model, will predict potential future impacts to the river. Predictive modeling is generally used in lieu of sampling because the Schuylkill River goes through industrial areas and it becomes difficult to discern what contaminants are present and from what party. Therefore, these water and sediment concentrations are predicted through direct modeling from concentrations found on site.