In 2002 New Castle County, with approval from the State of Delaware Department of Natural Resources and Environmental Control, developed a program to address the sewer flow problems entitled CSO Elimination Plan: Brandywine Hundred Sewer Rehabilitation Plan. The program prioritizes the areas requiring sewer rehabilitation by addressing the problems that are most critical for flow conveyance as well as those that have been determined to contribute the most rainwater and groundwater flows to the pipe system by volume in Phase 1, which began in 2002 and will continue until 2014. Phase 2 will take place from 2015 to 2018 and will continue the effort in areas where the sewer pipes have not deteriorated to the same critical stage as the pipes identified in phase1 but are still a measurable source of rainwater and groundwater intrusion. For phasing information, click the "Project Phasing" map posted below. The phases have been divided into project areas for design, construction and scheduling purposes.