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Cobb County Water System, located in metropolitan Atlanta, is “tunneling into the future” with construction of the Chattahoochee Tunnel. A large diameter, deep, hard rock tunnel project, the Chattahoochee Tunnel, will relieve the existing Chattahoochee Interceptor. As an environmental project, the Chattahoochee Tunnel will provide needed wastewater transport capacity while greatly reducing the possibility of sanitary sewer overflows into the Chattahoochee River. The Chattahoochee Tunnel will also provide for flow equalization at the existing R.L. Sutton Water Reclamation Facility.

This paper discusses the history of the project, beginning with preliminary engineering studies and culminating with final design. It describes the project in detail, including the design, subsurface investigation, subsurface easement acquisition and special contracting practices. The paper also presents an update of the status of construction, which began when notice-to-proceed was given to the contractor in late June 2000.
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Document Type: Research Article

Publication date: 01 January 2001

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