Conner Creek CSO Basin Emergency Rehabilitation Detroit, Michigan
The project included two parts: the renovation of the basin discharge gates (package A) and electrical power and SCADA improvements (package B) for the facility. In general terms, the original project scope consisted of the following:
- The rehabilitation/rebuilding of sixteen effluent lauder gates (ELG’s), including replacement of gate seals, rebuilding of actuators, replacement of gate stems and thrust bearings and rebuilding of curb seats
- The rehabilitation/rebuilding of sixteen effluent relief gates (ERG’s) including replacement of seals, rebuilding of actuators, replacement of gate stems and thrust bearings and rebuilding of curb seats
- Install of new mud valves in each of the four basin effluent channels Refurbishment of the electrical/control pull-boxes cast into the concrete roof of the CSO basin
- Installation and wiring of new remote input/output (ROI) panels
- Replacement of control fiber optic conduit and cabling
- Installation and wiring of new UPS cabinets
- Hardwiring of ERG and ELG cabinets
- Secondary power installation including new MCC buckets, transformers, and power panels
- Programming modifications to the existing Ovation control system to allow for SCC remote control of basin sluice gate and ERG actuators.
After the contract was awarded, Weiss Construction received a $1.2 million change order for the design and installation of six new influent flow meters and related improvements at the Conner Creek Basin and the adjacent Freud Pump Station Facility. This additional work was provided using the design-build method of delivery. The design work was completed in October 2019 while the installation of the new flow meters is expected to be completed by the Spring of 2020.