Laserfiche WebLink
Motion carried. Voting Yes: Chairperson Riley, Councilmembers Johns and Kuzma. Voting <br />No: None. <br />5. COMMITTEE BUSINESS <br />5.01: Consider Drainage Options for 173rd Avenue and Gibbon Street Area <br />Civil Engineer II Linton reviewed the staff report and each of the options, noting that after the <br />case was published, he realized it could be possible to create a cross section through the property <br />as explained in Option 4. He said the wetland cannot be drained in an effort to make the water <br />level lower than the home. He explained that while this may provide some relief, water seeks its <br />own relief. The water, in this case, rose above the ground. <br />Chairperson Riley asked why it would not work to dig a hole. <br />Civil Engineer II Linton noted the natural level of the wetlands is expressed through the <br />wetlands. If a hole was dug, the water level would be the same elevation as is expressed in the <br />wetlands; it would not drop down. He stated it could provide more storage area. He related the <br />action of the water and a hole to a cup and a serving bowl. Four inches of water in a little cup <br />would fill it up, while the water level would be much lower in the serving bowl. The water is <br />more spread out and shallow. <br />Councilmember Shryock arrived at 6:05 p.m. <br />Councilmember Johns inquired if the water will always be an issue in this area. <br />Civil Engineer II Linton responded in the affirmative. <br />Councilmember Johns asked how much water could be drained with piping added. <br />Civil Engineer II Linton answered he could not be sure. The existing elevations will remain and <br />make water drainage difficult. <br />Chairperson Riley inquired whether the water table has risen over the course of time. <br />Civil Engineer II Linton responded it has changed. <br />City Engineer Westby noted the water level was very high in 2014. It does fluctuate. He said <br />this issue will likely be a recurring problem without the pipe. He said the pipe may solve it and <br />will at least provide relief. <br />Civil Engineer II Linton stated if there is a heavy rain, the water could back up before it runs off. <br />Councilmember Kuzma asked what the anticipated cost would be. <br />Public Works Committee / June 16, 2015 <br />Page 2 of 8 <br />