R2000-159 AUTHORIZING THE EXECUTION OF A CHANGE ORDER

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i- '- OF'�f(` � �9� v � �� I ,�-� �9 '/[LINO\Y September 12, 2000 WATER MANAGEMENT MEMORANDUM NO. 2000 - OS MEMORANDUM TO: Honorabl.e Mayor and City Council FROM: Steve Garman, City Manager � John A. Smith, Acting Director of Water Management SUBJECT: South Water Treatment Plant �I Raw Water Pump Station SCADA System Engineering ' City Project 2000-23 The Raw Water Pump Station (RWPS) serving the City's South Water Treatment Plant (SWTP) pumps water from Lake Decatur into the SWTP. This water is treated and then put into the City's water distribution system. Presently the RWPS controls are connected to the SWTP through underground wires that enable staff to operate and monitor operations and conditions at the RWPS. This existing control system needs to be replaced with a radio telemetry system so the RWPS can be incorporated into the Supervisory Control and Data Acquisition (SCADA) system being implemented by the City. The City Council at its June 5, 2000, meeting approved an agreement with PC & E Consulting Engineers to design the SCADA system. The cost of the services is a not-to-exceed amount of$30,300 with funding coming from the Water Capital Fund. As Council is also aware, Black and Veatch Engineers is in the process of designing the SWTP ion-exchange (IX) nitrate removal facility. The IX facility will also have a SCADA system to allow for monitoring and control of the facility from the SWTP control room. When the IX nitrate facility is built, a new personal computer (PC) and software is required for the nitrate IX SCADA system. The RWPS SCADA project would have used the existing control room PC and software. PC & E has consulted with Black & Veatch on the type of PC and software needed for both facilities, and PC & E and Black & Veatch recommends that the computer and software be