Agenda Packets - 2007/05/29 - Laserfiche WebLink

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City $839.86 per month to operate, or $10,078.32 annually. Discussion: There are two system communication problems the City is currently encountering: 1. A temporary loss of communication to the five external sites. In most cases, this issue is addressed by Qwest in a generally short period of time. However, on occasions, it has taken several days. 2. A random total loss of communication to four of the five internal sites o Treatment plant No. 1 – a 2.8 million gallon per day capacity plant o The booster station - the City’s two million gallon in ground storage reservoir tank and high service back-up pumps o Well No. 1 o Well No. 2 Staff has tried to trouble shoot the reasons for the loss of communication, with the assistance of Roseville, and Siemens Water Technologies Corp., and have not been able to figure why the system fails, or why it starts to work without any repairs. It should also be noted that staff cannot start and stop these wells utilizing the SCADA computer without communication. Staff can start and stop these wells manually, but that would require someone to be onsite 24 hours a day, and that would cost the City $513.36 – $581.86 a day in overtime per person, during the summer months. If the staff did not work the overtime, and continued with our peak control energy saving plan, the City’s maximum daily pumping would be 3,060,000 gallons, with no ground reservoir back-up. In the summer months, the City has had several days where it has pumped over 3 million gallons of water in one day. It happened 6 times in 2005, all of which were in July. In 2004, the City again pumped over 3 million gallons of water in one day six times, again all in July. But in 2003 the City pumped over 3 million gallons of water in one day 22 times from June through August. On these days the City would have to take corrective measures, work overtime, or break the Xcel peak control rules. Peak control is a cost savings program that Xcel Energy offers to high volume electric users. It allows for Xcel to restrict the hours during the day that the City can draw electricity to pump, and treat water. It also allows Xcel to put the City on zero draw, which means that staff goes around to all the wells and shut off all the breakers where power comes into the buildings. If staff ran any well during the zero draw peak control time set by Xcel, the penalty would be so great that it would be more than what the City saves for that well over the entire year. The City saves on average $20,000 a year, on electric rates, on all the wells and booster station combined using peak control. The Peak Control Programs restricts the operations of W ell No 1 from 10:00pm to 6:00am, 7 days a week. For W ell No 6 the operations are restricted from 9:00 pm to 9:00 am Monday through Friday. While these were the only days we pumped more than 3 million gallons of water in one day, there were 20 – 30 days a year where the