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The City of Lynchburg, Virginia's current Combined Sewer Overflow (CSO) Long-Term Control Plan (LTCP) recommends complete separation of the entire combined sewer system. Separation of the remaining combined areas which are mostly in increasingly urban areas, including the historic
Central Business District, is challenging and expensive. The development of local bacteria Total Maximum Daily Load (TMDL) and the Chesapeake Bay nutrient TMDLs have also shown a spotlight on the City's CSO Program, as sewer separation influences the waste load allocations for both wastewater
treatment plant (WWTP) and stormwater. As a result, the City initiated a CSO LTCP update study to ensure that future expenditures provide the maximum benefit to the City and to the water quality. In fall 2009, the City launched a comprehensive rainfall and flow monitoring program and a water
quality sampling program to collect data for the LTCP update study. A sophisticated hydrologic and hydraulic model and receiving water quality models have been constructed and are currently being calibrated and validated using the data collected. The modeling tools will be used to evaluate
the CSO control alternatives for the LTCP update study. This “Part 1” paper will summarize the findings of the data collection and modeling process. The LTCP update (Part 2) is expected to be completed in early 2012
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.