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March 2018
Volume 70    Issue 3

Sequential Excavation Method with ground freezing for DC Water’s First Street Tunnel

Mining Engineering, 2018, Vol. 70, No. 3, pp. 92-92
Hee, Ivan; Bracken, William; Cordes, Harald; Njoloma, Stephen


PREVIEW:

DC Water’s First Street Tunnel (FST) is part of the $2.6 billion Clean Rivers Project designed to reduce the occurrence of combined sewer overflows into local waterways. Due to flood events in the Bloomingdale and LeDroit Park neighborhoods, the FST Project was accelerated by DC Water to mitigate future flooding by boosting storage capacity and thus relieving the undersized combined sewers.

The FST Project was finalized in 2016 as a collaborative effort between DC Water, its consulting team consisting of Greeley & Hansen and McMillen Jacobs Associates, and the design-build team of Skanska, Jay Dee Contractors (SKJD) with WSP Parsons Brinckerhoff as the designer.
 



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