CLIENT NAME - Sarasota.WaterAtlas.org

2.4.3.1 Storage Tank UtilizationDue to changes in the system operation over the past five to ten years, some of the groundstorage tanks are not currently utilized. As shown in Table 2.8, the only tanks used regularlyare Elevated Storage Tank #1 and the ground storage tanks at the University, VeniceGardens, and Carlton WTFs. This amounts to slightly more than 50 percent of the totalsystem storage capacity. County staff has stated that certain tanks are not utilized on aregular basis for the following reasons:• GST2 - Does not provide storage due to the location of the storage tank relative tothe needs in the system. This tank was taken offline approximately 10 years ago andhas not been used since that time.• GST3-1, 2, & 3 - These three ground storage tanks are not used due to their locationin the system. Although they are not used, the tanks are cleaned and maintainedregularly, and one of them is equipped to be put into service if needed.• GST5 - This tank is only used occasionally, usually for watering days during highdemand conditions.• GST6 - This tank is normally not used, but can be put into service if needed.• EVT2 - The County inherited this tank in 2003 from Florida Cities Utilities. This tankwas not well maintained by its previous owner. Although a structural evaluation wascomplete when the County assumed control of this facility, the piping and otherinterior appurtenances have not been upgraded. There is rust on some of the pipingand valves, and sand blasting and cleaning would be required prior to utilizing thistank. This tank is not expected to be brought online. Although the tank is closed fromthe water system by 3 valves, there is some leakage into the tank. County staff statedthat they empty the tank every few months to dispose of the water that has leakedinto the tank.The remaining storage tanks, Elevated Tank 1 (EVT1), GST1, and the ground storagetanks at the Carlton and Venice Gardens WTFs, are used on a regular basis to store waterand meet daily demand fluctuations. It should be noted that when the University Wellfieldand WTF are not in operation (normally due to cleaning the degasification system), GST1 istypically drained down and not used. In this case, Manatee County water alone suppliesPump Station No. 1. GST1 is put back online when operation of the wells and WTFresumes.FINAL - August 31, 2005 49H:\Client\SAR Co_SAR\6873C00 WATER SUPPLY MASTER PLAN UPDATE\Deliverables\TM 2 - Water System Assets\Final\TM2 Final.doc