Indianapolis, IN

Citizens Energy Group/DPW – Lift Station 507 Upgrade

The scope of the project included renovating and upgrading existing wet weather storage and pumping facility to allow for enhanced treatment of CSO events. The work required the addition of a self-cleaning screening system, a sodium hypochlorite disinfection system, dechlorination with sodium biosulfate, and necessary chemical storage. The washdown system was replaced with a tipping bucket system. Additional work included sluice gates, structural improvements, 1,000 GPM dewatering pumps, flow/level sensors, backup generator, new SCADA, and electrical/power components. The renovation included the installation of a green roof and miscellaneous site improvements. Significant coordination was required with the Riviera Club due to their normal activities and children present throughout the duration.  

The work was required as a part of the City’s CSO Long Term Control Plan program.  

The project was, in part, funded by the State Revolving Loan Fund 100%. Construction cost was approximately $4,800,000.00.

Royal Center, IN

Combined Sewer Overflow Long Term Control Plan, Phase 2 – CSO Basins & WWTP Improvements

The scope of the project included improvements to address the Town’s combined sewer overflows from their collection system into the receiving stream (Frederick’s Ditch) in accordance with the Town’s approved Long Term Control Plan with IDEM.  

The detailed scope of work for the project included the following:

• Extending a new 30” sewer from the existing diversion structure to the proposed CSO pump station
• A new CSO influent pumping station to pump the CSO flows to the proposed flow equalization basin (FEB)
• A new CSO screening structure with mechanical screen
• Installation of a flow equalization basin (FEB) with a capacity of 310,000 gallons with concrete bottom for sediment removal
• Installation of a settling and disinfection basin with a capacity of 700,000 gallons
• Chlorination/dechlorination system with metering pumps, piping, and chemical storage tanks
• Installation of an FEB drain to convey flows from the FEB to the WWTP
• A new underdrain/stormwater pump station to pump groundwater and site stormwater to Frederick’s Ditch
• A chemical/electrical building
• A non-potable water system
• Electrical and controls improvements

The project was funded by grants & loans from USDA – Rural Development and a construction grant from the Office of Community and Rural Affairs (OCRA). Construction cost was approximately $3,700,000.