Focused Field Investigations for Sewer Condition Assessment with EPA SSOAP Toolbox

摘要

The Nation’s sanitary sewer infrastructure is aging, and is currently one of the top national water program priorities.rnThe U.S. Environmental Protection Agency (EPA) developed the Sanitary Sewer Overflow Analysis and Planningrn(SSOAP) Toolbox to assist communities in developing SSO mitigation plans including sewer capacity and conditionrnassessment.rnThe SSOAP Toolbox contains a suite of integrated computer software tools. It can serve as the foundation ofrnwastewater collection system assessment by analyzing monitored flow data to prioritize where to inspect forrncondition assessment, and to evaluate the performance of rehabilitation activities.rnThe current state of technology for assessing the condition of sewer systems utilizes rather time consuming andrnexpensive field investigations employing the conventional closed circuit television or newer emerging technologiesrn(e.g., sonar, laser, ultrasonic, and infrared). The rainfall derived infiltration and inflow prediction methodologyrnemployed in the SSOAP Toolbox offers an effective and less costly means to design a focused condition assessmentrnprogram and maximize the success of field investigation efforts.rnIn this technical paper, the authors discuss how SSOAP fits into the overall asset management framework andrnhighlights the use of SSOAP to design focused field investigation plans as part of a sanitary sewer conditionrnassessment and subsequent rehabilitation evaluation.