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According to County staff, the average flow of the units is 150 gpm, and flushing is carriedout for either 6 or 12 hours per day, depending on location. Approximately 302,000 gallonsper day are flushed and discharged to various disposal sites. This amounts toapproximately 9 million gallons per month, or 108 million gallons per year of water that isnot being utilized. In 2004, County records showed a total daily supply average of 19.3mgd. Assuming a flushed volume of 302,000 gallons per day, approximately 1.6% of thetotal production was lost via the automatic flushing units in 2004.Further information regarding each automatic flushing unit can be found in Appendix I.In addition to the automatic flushing units in the system, utility personnel manually flushhydrants in the system as needed. In some new areas of the County in which build-outresidential capacity has not yet been reached, some mains are over-sized for the currentcustomers. In some cases, more than one large diameter main dead-ends in the samevicinity. Some of these mains have been connected to provide a looping system that willhelp to prevent the occurrence of stagnant water. Other areas have been identified forfuture looping.2.5 WATER SYSTEM INTERCONNECTSThe County is connected to several of the surrounding utility service areas via systeminterconnections. Some connections serve to provide backup water supplies duringemergencies, and some serve as connection points for bulk water sales. Existingconnections to surrounding utilities include 3 with Manatee County, 3 with the City ofSarasota, 2 with the City of Venice, 3 with SKUA, and 1 with the PR/MRWSA. Anemergency connection is also available between SKUA and the City of Sarasota. Thisinterconnect is significant to the County, as they will be assuming control of SKUA in July of2006. The County is also currently constructing emergency interconnects with theEnglewood Water District and the City of North Port. The existing and future systeminterconnects are shown in Figure 2.15 and are described further in the following sections.Although the pump station utilities staff monitored and maintained the County interconnectsin the past, utilities staff stated that the meter maintenance crew assumed responsibility formaintenance of the interconnects in 2000. Additional information regarding the systeminterconnects can be found in Appendix J.FINAL - August 31, 2005 55H:\Client\SAR Co_SAR\6873C00 WATER SUPPLY MASTER PLAN UPDATE\Deliverables\TM 2 - Water System Assets\Final\TM2 Final.doc