SOQ-19-5748A - Griswold WPF Finished Water Reservoir Repairs and Clearwell Valve Replacement

The City of Aurora is planning to initiate repairs to the 15 million gallon (MG) finished water reservoir located at the Griswold Water Purification Facility (WPF) and replace four 36-inch clearwell valves.  The reservoir was constructed in 1968 and is need of repairs.  The finished water reservoir is square (340 feet by 340 feet) with sloped sides.  The sloped sides and bottom are asphalt covered with a poly liner.  Sidewalls are constructed of concrete and the roof structure consists of concrete double tees with an EPDM rubberized membrane.  The Griswold WPF will be out of service from early November 2019 to April 2020, providing a window to conduct the repairs and valve replacement.