Phytoremediation of organic solvents in groundwater: Pilot study at a Superfund Site

A phytoremediation system consisting of a dense stand of hybrid poplar, white willow, and six native tree species was installed at the SRSNE Superfund Site. The overall objective of the phytoremediation system is to biologically "pump and treat" contaminated groundwater, thereby reducing the need for mechanical pumps, at least on a seasonal basis. Initial greenhouse studies found that the concentration of total volatile organic compounds at the site did not limit tree growth. Water use by the stand of trees will initially be estimated by measuring sap velocity. This information will help us to assess when it will be feasible to reduce operation land cost) of the mechanical pumps.