With a bottle of D.C. tap water and a countdown, a massive machine named Emily was christened across the street from the Lincoln Memorial at West Potomac Park before beginning the next leg of a multibillion-dollar effort to clean up the District’s rivers.
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Emily is the second of two tunnel boring machines being used to build D.C. Water’s Potomac River Tunnel. The tunnel is part of D.C. Water’s $3.2 billion Clean Rivers Project, designed to capture stormwater and sewage during heavy rain before it can overflow into the District’s waterways. The massive system is expected to be completed in 2030…