01-23-2006 Council Packet - Laserfiche WebLink

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attached MC�S gr�tph. The MCES has estimated the costs for capacity improvements to their system to handle the I&I flows and prorated these costs to each City. The annual I&I surcharge cost to Orono will be$90,000,for comparison purposes the annual Orono MCLS costs�re abottt$350,000. The goal of program is to reduce the peak flows into the system, so it is not necessary to expand the MCES collection �nd treatment system which would be very diPficult. Beginning in 2007, an I&I surcharge will be added to the MC�S bills, and Cities are expected to spend that �mount on I&I reduction projects. Money spent on I&I reduction will be credited against the sui•ch�rge. Sump Pump Inspection Progr�m The connection of sump pumps that discharge groundwater into the sanitary sewer system can be a significant cause of I&I as the discharge from one sump pump can be equivalent io an aciditiona126 homes on the sewer system. The coiu-iection of sump pumps to the sanitary sewer system is prohibited by State Statues, MCES Regulations, and the Orono City Code. Disconnection of sump pumps froin the sanitaiy sewer system is a cost effective method of reducing I&I flows. One of the requirements of the MC�S I&I reduction program is th�t Cities have a sump pump inspection program. The scheduling of inspection appointments can be one of the most time consuming and problernatic portions of the program. The actual sump pump inspection only takes about ten minutes. Our recommendation is to combine the sump puinp inspection and water meter replacement prograins for the residents on City water. We can then complete the sump pump inspection and water meter replacement in a single 30 minute appointment and will not have to inconvenience our residnts for two separate appoinhnents. We have been reviewing flow records for our lift stations in order to determine the highest priority areas for I&I, and our recommendation is to begin the water meter replacement and sump pump inspection program in the Lift Station 7 and 8 service areas located along County Road 19 between the CR15/CR19 intersection and the Narrows Bridge.These two lift station service areas contain 140 homes. The sewer in this area is clay tile sewer lines with numerous joints that was installed in :965 with sewer installed along the lakeshore that is below lake level. These two lift stations have high flows in relation to the number of homes served, and we often experience high level al�rms during heavy rains. The property owners will be sent a letter explaining the prograin which will provide inCormation on the i�nportance of reinoving sump pumps from the sewer system in order to lower peak flows, reduce the potential for sewer backups, and reduce wastewater treatment costs. COUNCIL ACTION REQUESTED: Motion to authorize Public Works staff to begin a SLIIIl]� P11217� I11SpeCt1011 �nd Water Meter Replacement Program for the Lift Station 7 and 8 service are�s and to �pprove the purchase of 140 Badger Radio Read W�ter Meters, Prom Hydro Metering Technologies, Burnsville Miiuiesota at a cost of$27,000 to be fiinded froin the Water Fund with a budget adjustment approved to rellect this expenditure. 2