- collection of extensive Acoustic Doppler Current Profiler data during different flow regimes for use in a comprehensive hydrodynamic model
- collection of surface sediment samples for grain size analyses for correlation to erosion model output
- measurement of in-situ sediment geotechnical properties
- collection of soft sediment cores for geotechnical lab tests to predict sediment bearing strength, maximum allowable sub-aqueous cap thickness, and slope stability, and
- collection of near-surface sediment samples for whole sediment and pore water analyses for PCBs, the results of which were used to assess the sediment/water partitioning characteristics to better calibrate predictive contaminant transport models.
Natural Resource Damage Negotiations
The Johnson Company analyzed NRD assessment documents for the Lower Fox River and developed potential compensation projects to offset harm to the ecosystem. We performed environmental research, developed conceptual designs, and prepared detailed cost estimates for potential NRD compensation projects. Among the many projects evaluated were fish spawning reefs, wetland creation and restoration, riparian buffer enhancement, watershed monitoring, and shoreline restoration. Natural Resource Trustees involved in discussions and negotiations included U.S. Fish and Wildlife Service, N.O.A.A., the Menominee and Oneida Tribes, and the States of Wisconsin and Michigan, and settlement negotiations are led by the Department of Justice with participation by U.S. EPA.
