FEMA Mitigation Best Practices: 91st Avenue Wastewater Treatment Plant   [open pdf - 26KB]

Alternate Title: 91st Avenue Wastewater Plant Salt River North Bank Mitigation

This document is part of the Federal Emergency Management Agency (FEMA) Best Practices Portfolio. The Best Practices Portfolio is a collection of true stories about people and communities who have experienced disasters, and what mitigation they used to survive, rebuild, and prepare for disasters. From the document: "The 91st Avenue Wastewater Treatment Plant (WWTP), located along the Salt River in the City of Phoenix, Arizona, has been at risk from the continued soil erosion of the existing bank. It was determined that flooding greater than a 10-year event could potentially cause a 600-foot lateral migration of the north bank of the Salt River. Under this scenario the out-fall channel, the Tolleson Landfill, a portion of the chlorine contact chambers, and a portion of the south holding ponds would be destroyed. A mitigation project was undertaken by Maricopa County and the City of Tolleson." This and other individual FEMA Best Practices documents are also combined in "Mitigation Best Practices: Public and Private Sector Best Practice Stories for All Activity/Project Types in All States and Territories Relating to All Hazards [August 10, 2011]," which can be accessed at the following link: [https://www.hsdl.org/?abstract&did=683132]

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