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. ain Zthon <br /> e <br /> DATE : APPROVAL : <br /> January 12 1990 , <br /> TO : <br /> City Councilmembers <br /> FROM - <br /> Larry Hamer, Public Works Director <br /> ITEM : CHANGE ORDER - IRON REMOVAL PLANT <br /> The water pressure is not being held by the 12 valves installed at the <br /> iron removal plant. Two 10 inch butterfly water valves need to be <br /> replaced immediately so the two filter units can be isolated from one <br /> another for backwashing purposes. <br /> In the future we could study the need to replace the six inch valves. <br /> The Public Works Department would install the valves. <br /> I recommend a change order on the Layne Minnesota contract be made for <br /> two 10 inch butterfly water valves at a cost of $1,560.00. <br /> :cjkl.23.90 <br />