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City Council Regular Meeting Minutes <br />November 28, 2006 <br />Page 8 <br />1 manganese. He stated the anticipated water filtration plant improvements would include a new <br />2 chemical feed system which includes green sand which is an anthracite designed to remove <br />3 manganese and iron. Mr. Hubmer stated an air backwash system designed to scour filters and <br />4 piping modifications would be made to improve plant operations. He stated on-going <br />5 maintenance such as cleaning, inspecting, and if necessary, rehabilitate the two million gallon <br />6 ground storage reservoir. <br />7 <br />8 Mr. Hubmer reported the project schedule includes a week long filter media test beginning <br />9 December 4, 2006 to ensure this option would achieve the goal of removing the manganese. He <br />10 stated complete plans and specifications are expected in December 2006, receipt of bids and <br />11 award of bids are expected in January 2007, and project completion between April and May of <br />12 2007. <br />13 <br />14 Mr. Hubmer explained it is important to complete the project over the winter months because <br />15 water demand is down. He stated this would enable the City to take each vessel off line one at a <br />16 time, do all the work, and have the plant up and running for the peek demand in the summer. <br />17 <br />18 Councilmember Gray stated it appears most of the maintenance is what would be a normal part <br />19 of the water treatment plant. <br />20 <br />21 Mr. Hubmer replied that was correct, however the City did not have the manganese problem in <br />22 past. <br />23 <br />24 Councilmember Gray assumed most, if not all the money, would come out of money set aside for <br />25 water filtration maintenance. <br />26 <br />27 City Manger Mornson replied that is correct. <br />28 <br />29 Councilmember Stille asked how the manganese problem could be intermittent. <br />30 <br />31 Mr. Hubmer replied it is not uncommon for this to happen during hydrant flushing. He stated the <br />32 manganese is getting into the system, and settling out in the pipes. He explained when demand <br />33 peeks the manganese is stirred up and moves through the system. <br />34 <br />35 Councilmember Stille asked how often the City's water is tested. <br />36 <br />37 Mr. Hubmer relied the water is tested weekly according to Department of Health standards. He <br />38 explained the water from the treatment plant adheres to higher standards than bottled water. <br />39 <br />40 Mayor Faust asked Mr. Hubmer if he is sure this is a manganese problem and that the proposed <br />41 solution would correct the problem. <br />42 <br />43 Mr. Hubmer replied they believe the high demand days stir up the manganese and the current <br />44 system was not designed to handle it. He assured everyone the proposed plan would indeed <br />45 control the manganese. <br />46 <br />13 <br />