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City Council Regular Meeting Minutes <br />January 23, 2007 <br />Page 7 <br />1 Mr. Hubmer replied it would begin within the next month and finish about May 1, 2007. <br />2 <br />3 Councilmember Stille asked if preliminary testing was accomplished to make sure whatever <br />4 system used would work. <br />5 <br />6 Mr. Hubmer replied a sample filter was brought in to test the removal of iron and manganese. <br />7 He indicated it worked well. Mr. Hubmer stated the change to coarse grain sand and new <br />8 chemical treatment processes had a better propensity to remove the manganese. <br />10 Councilmember Stille asked what color the water was after it went through the filter. <br />11 <br />12 Mr. Hubmer replied it was clear; crystal clear! <br />13 <br />14 Councilmember Thuesen asked how soon the filter would need changing and would the City <br />15 know when it needed to be changed before the water turned brown. <br />16 <br />17 Mr. Hubmer replied the life span of the filters is 20 to 25 years. He indicated a slowdown would <br />18 be noticed over time. Mr. Hubmer stated testing for manganese and tracking concentration <br />19 levels would continue. <br />20 <br />21 Motion by Councilmember Thuesen, seconded by Councilmember Gray, to Approve Resolution <br />22 07 -021, a Resolution Awarding a Bid and Ordering Improvements for the 2007 Water Treatment <br />23 Facilities Improvements to Shank Constructors, Inc. in the amount of $375,600. <br />24 <br />25 Motion carried unanimously. <br />26 <br />27 B. Resolution 07 -022; Ordering Changes to the Assessment Policy for Public Roadways <br />28 <br />29 Mr. Hubmer explained Resolution 07 -022 was being modified to reflect that all City streets, <br />30 including concrete streets, would be reconstructed with bituminous asphalt pavement. He stated <br />31 it clarifies the water service replacement cost assessment and general clarifications. Mr. Hubmer <br />32 reported the update included routine drainage and storm sewer replacement, sidewalk <br />33 replacement, new sidewalk installation, and updated front footage diagrams and calculations. <br />34 <br />35 Mr. Hubmer reported the comparison of concrete versus asphalt was discussed. He stated <br />36 concrete is generally quieter and creates a smoother ride, is lower in initial cost, flexes with the <br />37 freezing and thawing of the subgrade, the mixture could be adjusted to address specific concerns <br />38 such as rutting or cracking, and it is less expensive to repair. <br />39 <br />40 Mr. Hubmer stated, in comparison, concrete is generally louder, higher in initial cost, the rigid <br />41 material did not flex with freezing and thawing of the subgrade which leads to increased <br />42 breakups at manholes and gate valves. He indicated concrete provides a longer - lasting surface <br />43 that is more costly to maintain or replace over time. <br />44 <br />45 Mr. Hubmer stated the 2007 Street Reconstruction Project bid for asphalt and concrete <br />46 alternatives for the streets and alleys came in at $272,800 and $490,100 respectively. He <br />