DC Water provided an update on February 23, outlining expanded repair and cleanup efforts at the site of the Potomac Interceptor that collapsed on January 19 along Clara Barton Parkway near I-495 and the C&O Canal. The collapse released an estimated 243.5 million gallons of wastewater and was described by the University of Maryland as one of the largest sewage spills in U.S. history. (more…)