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Section E4a, Greenbelt Route, Georgia Avenue - Petworth Station
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| Service: | Waterproofing design and construction support services
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| Estimated cost: | Commencement: | December 28, 1994
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Completion date: | December 28, 1997
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| Location: | Washington, DC United States |
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| Technical data: | PVC membrane waterproofing Cut & Cover Station, including crossover, service rooms, ventilation structures, station entrances. Overall length: 1,090 ft (332 m); average depth: 75 ft (23 m); waterproofed area: 275,000 sqft (25550 m²). |
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| Geology description: | Very compact light gray clayey or silty medium fine sand. Dark gray plastic clay. Light gray/green fine grained hornblende quartz diorite, highly weathered to slighty weathered. |
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| Bid cost: | Final cost: | $1,200,000
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