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. ~ ~~ILLS MEMORANDUM DATE: October 4, 2005 Work Session AGENDA #1 TO: Mayor and City Council Michelle Wolfe, City Administrator FROM: Thomas J. Moore, Director of Operations & Maintenance SUBJECT: City Hall Generator - Potential Upgrades Backeround At the May 13, 2002 City Council meeting, the City Council unanimously approved the purchase of a portable 200kw portable generator for City Hall. The intended purchase of this generator was to supply electrical power to City Hall during a power outage and for participating in the . Excel Energy Peak Power Control Program. Currently, the Operations and Maintenance Department has two portablc generators to supply backup electrical power to the City's 14 lift stations during a weather-related power outage. One of these generators must be permanently stationed at Lift Station #8, which is the largest with three wet wells. That leaves staff with one generator to provide backup electrical power to any number of the remaining 13 lift stations during a major weather related event. This remaining generator must travel to each of the 13 lift stations and provide just enough backup electrical power to pump the water level down to a safe levcl, then quickly proceed to the next lift station and perform the same task and so on down the line until every lift station is serviced. The cycle then begins again until electrical power is restored by Xcel Energy. In 2005, there have been three weather-related events where five or more lift stations, including Lift Station #8, were without electrical power. In addition, there have bcen two weather-related events where between two and four lift stations were without cleetrieal power, one of which involved Lift Station #8. Potential Uperades In order to have the existing City Hall generator available to assist in lift station operations during a weather-related electrical power outage, the following upgrades will be needed. .