Cambridge Town Gas - Cambridge Creek MGP Site Remediation

Cambridge, MD

This project involved remediation of an historical manufactured gas plant site.  Underwater and near shore soils were contaminated with significant levels of coal tar and other pollutants.  The site was located along an estuary to the Chesapeake Bay.  As a result, there were numerous regulatory agencies and concerned parties involved with all phases of the project.  The main features of this project included: dredging and offsite disposal of approximately 6,500 cubic yards of contaminated underwater sediments; removal of approximately 1,000 cubic yards of shore side soils; design and construction of 125 linear feet of heavy duty sheet piling bulkhead; design and construction of 350 linear feet of in-water temporary sheeting enclosure to confine sediments from the most heavily contaminated portion of the site; capping remaining bottom sediments and remediation of underwater elevations with nearly 5,000 cubic yards of clean cap material, as well as demolition and reconstruction of a commercial timber dock.

WLDDI was able to come up with an innovative concept to allow all of the various phases of this project to occur within a very small footprint (enclosed in full depth turbidity curtain) that was imposed on this project.  Through our inherent flexibility and creative use of equipment, we were able to tackle these various items efficiently and accurately.  The project involved extensive use of hydrographic surveys to verify the complex dredging and capping templates.  In all phases of the project, we were able to meet and exceed our client’s expectations.

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