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Development of Legal/Regulatory Structure to Address Water Quality Standards Issues for Combined Sewer Communities in Indiana

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Combined sewer communities in Indiana frequently experience combined sewer overflows (CSOs) during wet weather events, when system capacity is inadequate to assimilate all of the flow being collected. CSO communities are required to develop long-term control plans (LTCPs) that identify the steps necessary to minimize the frequency and volume of discharges. CSO communities are also required to comply with water quality standards. Virtually any CSO discharge, however, will result in a water quality standards violation, and elimination of all CSO discharges is generally not economically feasible and may present environmental challenges of its own. The Clean Water Act contains a process that can address this issue—the use attainability analysis (UAA) process. In order to make this process readily available to Indiana communities, Indiana has adopted—and EPA has approved—a new statute that provides for the use of UAAs to address water quality standards problems for Indiana CSO communities.

Document Type: Research Article


Publication date: January 1, 2008

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