Dredging Services

Dredging & Marine Services

AWR personnel have substantial expertise supporting a variety of marine related permitting, dredging and construction projects ranging from international seaports to smaller harbors and marinas. These projects include a variety of objectives, including:

  • Dredge design, permitting and construction oversight
  • Placement site and effluent permitting
  • Beneficial reuse of dredge sediment
  • Sediment toxicity evaluations
  • Berm and levee stabilization and habitat enhancement
  • Creosote pier removal

Dredge & Marine Permitting

The marine environment is complicated with multiple potential risks that require careful, thoughtful, and expert analysis. These risks begin with managing public and regulator concerns and extend to EIR/EIS compliance.  In-water work requires permitting and project evaluation from multiple agencies including but not limited to:

  • California Department of Fish and Wildlife
  • State Lands Commission
  • National Marine Fisheries
  • US Army Corps of Engineers
  • Bay Conservation and Development Commission (BCDC)
  • State Water Resources Control Board
  • USACE – San Francisco Regional Dredge Material Management Office (DMMO)

Through our experience, AWR has built the necessary relationships and strategies to permit complex marine and dredging projects in the San Francisco Bay and the Sacramento/San Joaquin Delta.   We employ our hydrology, geochemistry, and hydrogeology expertise to evaluate threats to surface and ground water posed by dredge sediments and marine construction projects.

Approach to Dredging

Our dredging projects start with a carefully thought out design that incorporates the dredge method, material management, and remediation and mitigation measures to meet client needs. We bring experience with dredge and marine construction efforts at Navy and Port dock operations involving:

  • Contamination from metals, pesticides, dioxins, petroleum, and salinity issues
  • Geophysical methods to identify buried debris
  • Assessment of aquatic toxicity
  • Mitigation offsets, including: dissolved oxygen enhancement, silt and fish screens and curtains, alternative dredge and construction methods

Beneficial Reuse of Sediment

AWR has permitted and supervised beneficial reuse of over 1 million cubic yards of dredged sediment at various locations throughout the Sacramento/San Joaquin Delta.  We have recently completed work for the Port of Stockton, Department of Water Resources, the Army Corps, and Stockton Sailing Club.  AWR completed in coordination with DWR and the Water Board, a Delta background study to support a general permit for the widespread reuse of dredged sediments.