The South Boston CSO Storage Tunnel, also known as the North Dorchester Bay CSO Storage Tunnel, is a large underground facility designed to reduce untreated sewage discharges into Boston Harbor from the Massachusetts Water Resources Authority combined sewer and stormwater system. It was opened on July 23, 2011, and is part of the federally mandated Boston Harbor Cleanup project.[1] CSO stands for Combined Sewer Overflow.
Combined sewers are problematic because during heavy storms, they are forced by a high volume of rainwater from storm drains to carry untreated sanitary sewer output into Boston harbor, including dangerous amounts of human waste. In addition to the tunnel project, the MWRA is undertaking costly sewer separation in parts of South Boston near the Reserved Channel, and reconfiguring various drains and outflows.[2] The tunnel provides a buffer to allow some combined sewers to remain in service. It has sufficient buffer capacity to hold combined sewage and rain water during most storms, helping to eliminate the Combined Sewer Outflow events that polluted nearby beaches on average 20 times per year.[3] After the storm is over, the tunnel is "dewatered" back into the network at a rate the Deer Island Waste Water Treatment Plant can handle.
ReferencesEdit
^"MWRA - Boston Harbor Project: An Environmental Success Story". Mwra.state.ma.us. 2009-06-03. Retrieved 2011-10-08.
^"MWRA map of South Boston projects". 2007-06-23. Retrieved 2012-08-18.
^Massachusetts Water Resources Authority (2007-06-23). "MWRA COMPLETES OVERFLOW TUNNEL IN SOUTH BOSTON". Retrieved 2012-08-18.
south, boston, storage, tunnel, also, known, north, dorchester, storage, tunnel, large, underground, facility, designed, reduce, untreated, sewage, discharges, into, boston, harbor, from, massachusetts, water, resources, authority, combined, sewer, stormwater,. The South Boston CSO Storage Tunnel also known as the North Dorchester Bay CSO Storage Tunnel is a large underground facility designed to reduce untreated sewage discharges into Boston Harbor from the Massachusetts Water Resources Authority combined sewer and stormwater system It was opened on July 23 2011 and is part of the federally mandated Boston Harbor Cleanup project 1 CSO stands for Combined Sewer Overflow The main part of the facility is a tunnel 17 feet 5 2 m in diameter running 2 5 miles 4 0 km along the harbor front The tunnel starts at an Odor Control Building 42 19 21 N 71 02 56 W 42 3225 N 71 0490 W 42 3225 71 0490 Odor Control Building continues along the harbor front with a midpoint near 42 19 46 N 71 02 14 W 42 3294 N 71 0373 W 42 3294 71 0373 and ends with a pump station at 42 20 19 N 71 01 18 W 42 3385 N 71 0216 W 42 3385 71 0216 Pumping station citation needed Combined sewers are problematic because during heavy storms they are forced by a high volume of rainwater from storm drains to carry untreated sanitary sewer output into Boston harbor including dangerous amounts of human waste In addition to the tunnel project the MWRA is undertaking costly sewer separation in parts of South Boston near the Reserved Channel and reconfiguring various drains and outflows 2 The tunnel provides a buffer to allow some combined sewers to remain in service It has sufficient buffer capacity to hold combined sewage and rain water during most storms helping to eliminate the Combined Sewer Outflow events that polluted nearby beaches on average 20 times per year 3 After the storm is over the tunnel is dewatered back into the network at a rate the Deer Island Waste Water Treatment Plant can handle References Edit MWRA Boston Harbor Project An Environmental Success Story Mwra state ma us 2009 06 03 Retrieved 2011 10 08 MWRA map of South Boston projects 2007 06 23 Retrieved 2012 08 18 Massachusetts Water Resources Authority 2007 06 23 MWRA COMPLETES OVERFLOW TUNNEL IN SOUTH BOSTON Retrieved 2012 08 18 External links EditMap all coordinates using OpenStreetMapDownload coordinates as KML GPX all coordinates GPX primary coordinates GPX secondary coordinates Massachusetts Water Resources Authority nbsp This article about a civil engineering topic is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title South Boston CSO Storage Tunnel amp oldid 944748563, wikipedia, wiki, book, books, library,
