CCP 03-25-2014 - Laserfiche WebLink

Home Browse Search

11iAW,H)ON the city that works for you Report Number Agenda Section Council Meeting Date REQUEST FOR COUNCIL CONSIDERATION 14 -055 VI -2 March 25, 2014 ITEM DESCRIPTION: CONSIDERATION FOR BUDGET AMENDMENT FOR CITY PROJECT 13 -9, LIFT STATION SCADA & COMMUNICATION UPGRADES. DEPARTMENT HEAD'S APPROVAL: tie CITY MANAGER'S APPROVAL: No comments to supplement this repc Comments attached Recommendation: Staff requests councifauthorize a project budget amendment increase of $36,900 from an original budget of $137,500 to an amended budget of $174,400 for City Project 13 -9, Lift Station SCADA and Communications Upgrades. Legislative History: On April 23, 2013, the City Council authorized the implementation of the recommendations presented in the report titled City of New Brighton Lift Station Needs Assessment prepared by Foth Engineering and In- Control (January 2012) ( "Report"). On September 17, 2013 In- Control provided an updated technical letter outlining a more precise work scope and project requirements. Financial Impact: The additional cost to provide stainless steel free standing Lift Station Control Panels at Lift Stations 1, 7, & 8 is $36,900. Explanation: The September 17, 2013 In- Control letter identified a gap in one of the original project assumptions. As part of a final measurement of ordering the new equipment required for the upgrade, it was determined the existing enclosures for Lift Stations 1, 7, & 8 were insufficient in size to accommodate the necessary control panels, pumps, vacuum pumps, and piping. The existing Lift Station control panels, pumps, vacuum pumps, and piping are all enclosed in a fiberglass enclosure "dog house" (Refer to Exhibits 1 & 2). Usable space is very limited inside the dog house area. The Motor Starter Power panel is a rat's nest of wiring modifications and alterations. The panel contains two lead acid batteries used for backup power to the PLC panel and a hardwired pump alternator relay. Some of the components are at the end of their life span. The PLC panel contains an older controller that although functions well, it will not facilitate use of Ethernet radio's for communication and does not have adequate space for a radio. The Submersible Level Transducer panel contains a proprietary interface board that is no longer available and does not interface to an Intrinsic Safety Barrier. Power for the Lift Station comes from a nearby wood support stand that has a Utility Power Meter, Power Disconnect, and Backup Generator Transfer Switch with Generator Receptacle. After reviewing overall condition of all existing control equipment including Motor Starter Power panel, PLC panel and Submersible Level Transducer panel In- Control recommends the following: Combine the functionality of all three control panels installed within the Lift Station dog house into a free standing stainless steel Lift Station Control Panel to be mounted outside of the Lift Station dog house (Refer to Exhibits 3 -5). The proposed Lift Station Control Panels would contain all required power equipment and controls to operate the existing sewage pumps, vacuum pumps, space heater, and dog house exhaust fan. The new Lift Station Control Panel would include a touch screen operator interface to allow operators to modify control set points, view pump status and information, and view wetwell levels. All lift station status information will be transmitted to the Maintenance Facility via Ethernet