Thompson Engineering has been providing services to an industrial client since 2008 for dredge maintenance of the company’s berthing area on the Mobile River. The dredging limits in the vicinity of the bulk loading dock along Mobile River totals approximately three acres and is dredged to a maximum depth of -44 ft. Mean Lower Low Water (MLLW). The dredged materials are typically pumped and disposed of in the Alabama State Port Authority (ASPA) Dredge Material Management Area (DMMA).
Coordination with the Alabama Department of Conservation and Natural Resources (ADCNR) State Lands Division; U.S. Army Corps of Engineers (USACE); ASPA; and the Alabama Department of Environmental Management (ADEM) is required. Thompson provides support to our client on all phases of work, including: permitting, marine and landside soil borings, geotechnical and chemical laboratory analyses, hydrographic surveys, disposal agreements, procurement, and construction management.
Thompson serves as the Prime Contractor in a design-build contract when the best value dredging or civil contractor does not have a master services agreement with our client. All activities are conducted in accordance with Section 10 of the Rivers and Harbors Act.
Once dredging operations have been completed, Thompson provides support to our client and ASPA to ensure an appropriate amount of dredge material is removed from the DMMA so that it remains a viable disposal area for future dredging operations.