Wenning Environmental

Sediment Investigation, Remediation, & Restoration

Sediment Investigation, Remediation, & Restoration

Experience planning and implementing investigations of biota, sediments, soils, and surface waters that support health and ecological risk assessments. These assessments inform remediation and restoration feasibility studies and environmental cleanup goals for a wide range of metals and persistent chemicals, and typically involve periodic monitoring, determining baseline conditions, and supervising bathymetric analyses, hydrodynamic studies, and forensic investigations of industrial activities.


Examples of client assignments include:

  • Several decades of sediment investigations and remediation studies involving sediment and surface water sampling, bathymetric surveys, hydrodynamic studies, risk assessments, and inventories describing historical discharges from industrial sites, storm drains, and combined sewer outfalls in urban waterways and ports/harbors. Work assignments have included the Lower Passaic and Hackensack Rivers and Newark Bay (US-New Jersey), Tittabawassee and Saginaw Rivers and Saginaw Bay (US-Michigan), Porto Torres (Sardinia, Italy), Portland Harbor and Lower Willamette River (US-Oregon), Inner San Diego Harbor (US-California), Baltimore Harbor (US-Maryland), Augusta Bay (Sicily, Italy), Lago Maggiore (Italy), Venice Lagoon (Italy), Leca River (Portugal), Kishon River (Israel), Hong Kong Harbor (PRC), and the Parramatta River and Homebush Bay (Australia).
  • Collaboration with US Army Corps of Engineers ERDC scientists to revise two US federal guidance documents, the CWA Section 404 Inland Testing Manual and the MPRSA Section 103 Ocean Testing Manual (aka the Green Book), to reflect current science and technologies for sampling, testing, and analysis of water, sediment, and aquatic biota supporting environmental thresholds for disposal of dredged materials.