On August 11, 2020, the City Council awarded Contract 15325 to Red River Construction Company in the amount of $7,257,052 for the construction of the Southeast Water Reclamation Plant (SEWRP), Plant 3 Improvements Project. The work of the project includes replacement of rotating mechanisms in two secondary clarifiers, replacement of underground and overhead air piping, construction of a return activated sludge pumping station, and associated electrical improvements. On January 26, 2021, the City Council authorized Change Order No. 1, for emergency repairs on a 36-inch influent pipe in the amount of $391,736.14, with a 91-day contract extension. On September 9, 2021, the City Council authorized Change Order No. 2, for 11 contract modifications in the amount of $308,243.89, with a 119-day contract extension that incorporated additional air valves for sludge pumps, modifications of the non-potable water piping network, dewatering of the aeration basins and modifications to the aeration diffuser grid. On May 10, 2022, the City Council authorized Change Order No. 3 in the amount of $103,024.94, with 39 days of additional time for construction. This change order included coating on the aeration basin influent pipe, replacement of existing valves, addition of new Return Activated Sludge (RAS) pumps, additional pumping and cleaning of clarifiers, and an epoxy injection credit. Change Order No. 4 will incorporate 7 proposed contract modifications, including 2 new hot boxes at the RAS pump seal water panels, installation of 2 replacement 6-inch Waste Activated Sludge (WAS) plug valves, and 2 additional pipe supports for the air header. Staff and the Consulting Engineer negotiated Change Order No. 4 with Red River Construction Company in the amount of $118,677.78 and 64 days of additional time for construction. |