AWWA IMTECH59636

A well-calibrated water distribution system model can be a critical tool that supports the preparation of an emergency response plan (ERP) and may be essential in managing the response to an intentional contamination event that involves biological or chemical agents. Rapid response that isolates the migration of the contamination may be the only credible way to convince the public that their drinking water is safe. This slide presentation demonstrates how modeling six simulations of a terrorist chemical attack to a water system can be used to develop an ERP that includes the following: notification of customers in Pressure Zone II to use bottled water; flushing at Hydrants J-14 and J-36 per Scenario VI, to remove the contaminant from the system; and, a determination of when the system would return to normal operation.