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Mr. Gary Bigham is a Principal Scientist in Exponent's Environmental Sciences practice. Mr. Bigham is an environmental scientist with 30 years of experience in evaluating the transport fate and effects of contaminants in surface water groundwater and marine waters and in freshwater and marine sediments. He has managed and been the principal investigator of field laboratory and theoretical assessments of contaminants related to dredged sediments drilling muds and cuttings mine tailings manganese nodule processing waste seafood processing waste municipal sewage and spilled oil. Mr. Bigham has also directed remedial investigations and feasibility studies human health and ecological risk assessments cost allocation studies and natural resource damage assessments for several sites involving sediments contaminated with dioxin metals mercury PCBs PAHs and chlorinated benzenes. Mr. Bigham has authored publications on the behavior of mercury in aquatic environments. He has also served as an expert witness in cases involving PCB transport in rivers and mercury bioaccumulation in the Florida Everglades. Mr. Bigham has an M.S. in Geophysical Sciences from the Georgia Institute of Technology. | 