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Jan 012015

IMG_1090The Vineyard Road, Powerline, and Rittenhouse Flood Retarding Structures (FRS) are located just outside Maricopa County in northwest Pinal County, south of Apache Junction and parallel to the Central Arizona Project (CAP) canal between Baseline Road and Ocotillo Road. Per agreements with the Natural Resources Conservation Service (NRCS), the Flood Control District of Maricopa County (FCDMC) operates and maintains these three earthen dam structures. Together, this 5 mile long group of flood retarding structures protects approximately 72 square miles of residential, commercial, and agricultural land in both Maricopa and Pinal counties from being flooded. If not for these dam structures, major public facilities such as the CAP canal, Phoenix-Mesa Gateway Airport, and ADOT’s L202 Santan Freeway would be severely compromised during heavy rains. With the need for dam safety upgrades becoming apparent after 30 years of service, in 2015, an $80 million, 4 year duration, construction project began that will raise the Vineyard Rd FRS nearly 15’, decommission the Powerline FRS, construct a new Powerline channel, provide new principal and auxiliary spillways, and ultimately rehabilitate the Rittenhouse FRS. Due to the safety and funding driven urgency of completing this project, the FCDMC sought a consultant team to assist them with overseeing the construction activities on the Vineyard Road Flood Retarding Structure (FRS) Rehabilitation project. QT was selected by the District for this contract and is currently providing all QA Materials Testing services, along with other specialty capabilities such as Construction Management and Inspection Services, Geotechnical Services, Environmental Services and Public Involvement Services.

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