Rowlett Creek and Lower Cottonwood Creek Lift Station Improvements

This project consisted of the construction of a new 20 MGD submersible lift station (LS) to replace the existing Lower Cottonwood Creek LS with associated electrical equipment building and standby generator. The standby generator capacity was also be added at the Lower Rowlett Creek LS. A new gravity pipeline was installed to divert flow upstream of the Lower Rowlett LS to the Lower Cottonwood Creek LS. A larger force main was also constructed from the Lower Cottonwood Creek LS to the plant headworks of the Rowlett Creek Regional Wastewater Treatment Plant. The existing 24-inch Lower Cottonwood Creek outfall sewer was rehabilitated, and odor control equipment was added for the new wetwell.

Mbroh provided on-site electrical and SCADA resident inspection services to support the construction associated with the improvements. Mbroh’s duties consisted of visual Inspections and witnessing of construction activities including electrical layouts and installation of the generators, participating in the SCADA factory acceptance testing, and reviewing as-built drawing sets weekly to make sure RFI and change orders were implemented on as-built drawings.