Sustainable Benefits for the Blue River South Sanitary Sewer System Kansas City, MO Water Services Department

Basin-wide control alternatives were developed for the Blue River South (BRS) Sanitary Sewer System (SSS) basin as part of the effort to develop the Kansas City, Missouri Long Term Control Plan (LTCP) for the management of wet weather overflows,. Control alternatives were developed by identifying improvements such as storage facilities and relief sewers to eliminate wet-weather overflows; and identifying and evaluating wet-weather volume and peak flow reductions achievable through inflow and infiltration (I/)I reduction for all sub-basins in the BRS basin.Simulations were performed for the five-year, 24-hour storm; simulations were also performed for the 10-year, 24-hour design storm at the request of USEPA to determine the projected incremental increase for control. Analyses indicated that it would be more cost-effective to perform additional I/I removal in conjunction with increased storage rather than to attempt to meet volume reduction needs with storage alone.The preferred alternative for the 5-year, 24-hour storm is a combination of typical constructionintensive engineered solutions and infrastructure improvements that can be considered both “green” and “sustainable”. The recommended solutions will also enhance the performance of possible “green” solutions that may be implemented in the basin in the future to mitigate stormwater flows as part of continuing efforts to improve receiving water quality.