Greenbelt Route Section E8a

Owner:	Washington Metropolitan Area Transit Authority
Client:	RK & K - Rummel, Klepper & Kahl, Baltimore, MD
Service:	Alternative NATM Design and Instrumentation
Estimated cost:	$50,000,000	Commencement:	April 30, 1985	Completion date:	May 31, 1993
Location:	Washington, DC United States
Technical data:	Two single track running tunnels, L= 6,170 ft (1880m) each, (E Line) 3 Shafts and Cross Adits
Geology description:	Clay, sandy clay and sand, parts with some gravel and occasional boulders, decomposed bedrock and weathered bedrock.
Categories:	Urban Rail/Bus Stations and Tunnels
Service areas:	Tunnel Design & Specialities, Waterproofing & Water Control

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