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C111Project Proposal Exhibit Al <br /> A n 0� <br /> CONCENTRIC <br /> INTEGRATION <br /> April 25, 2023 <br /> Mr. Lou Weller <br /> Sr. Electrical Engineer <br /> Crawford, Murphy&Tilly <br /> 2750 W. Washington St <br /> Springfield, IL 62704 <br /> Subject: SWTP Electrical Improvements—Automation Design <br /> Concentric Project Number: 2325228.00 <br /> Dear Mr. Weller: <br /> Thank you for allowing us the opportunity to provide the automation design the City of Decatur SWTP <br /> Electrical Improvements. We look forward to providing you with outstanding design services! We will <br /> work with the CMT to support the electrical design with automation design. Our project approach is to <br /> conduct an initial site visit and review existing documentation to assess the current conditions of the WTP <br /> and locations for the new SCADA control panels. We will design Process and Instrumentation Diagrams <br /> and SCADA Diagrams to provide documentation for the connection of new motor starters and the <br /> reconnection of existing instruments. Concentric will attend milestone design meetings for 30%, 60% and <br /> 90% completion that will also include follow-up site visit to coordinate design. <br /> Based on initial review we are anticipating the following improvements: <br /> • Replacement of SCADA Cabinet SCC-2 in the Water Treatment Plant. The new SCADA cabinet <br /> may have some connections to new Medium Voltage(MV) Switchgear, MV Motor Control Centers <br /> (MCCs) for High Service and Transfer Pumping, Chemical Feed MCC, HVAC MCC and a new <br /> ATS for the Nitrite Facility. The new SCADA panel will also have provisions to reconnect the <br /> existing instrumentation and other control panels which will remain. <br /> • Replacement of SCADA Cabinet SCC-5 in the Nitrate Facility. The new SCADA cabinet will have <br /> connections to a new MCC and feed pump VFDs along with the existing instrumentation and other <br /> control panels which will remain. <br /> • Replacement of SCADA Cabinet SCC-11 in the Raw Water Pump Station. The new SCADA <br /> cabinet(s) will have connections to a new MV MCC with VFDs and a new 480V MCC along with <br /> the existing instrumentation and other control panels which will remain. <br /> • Replacement of SCADA Cabinet SCC-10 and the reconnection of devices for the Dam Facility. <br /> • Connections to MCCs which include a mix of hardwired connections for alarms and data <br /> connections for power monitoring and other diagnostic information. <br /> Concentric will coordinate control panel sizes and locations with CMT's electrical design team and review <br /> documents to coordinate design efforts. <br /> 8678 Ridgefield Rd., Crystal Lake. IL 60012 • 815-788-3600 • www.goconcentric.com <br />