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City Engineer/Public Works Director Westby stated that numerous terms can be used for <br /> stormwater ponding areas but confirmed that the intent would be for the water to infiltrate into the <br /> soil and is not meant to have standing water for long periods of time. <br /> Chairperson Riley asked if the water would drain at the same rate, it currently does. <br /> City Engineer/Public Works Director Westby provided details on the current path of drainage and <br /> noted that this area would become deeper and therefore water could sit for longer than it currently <br /> does. He stated that they are not changing the drainage area and therefore it would be the same <br /> water volume that currently drains to this area,though it would drain more quickly due to the storm <br /> sewer. He did not think the chemicals used for lawn treatment at the park would be different than <br /> what is used on residential yards. <br /> Councilmember Woestehoff stated that the resident he spoke with had questions about the timeline <br /> of events as the resident was planning to have company for a wedding. <br /> City Engineer/Public Works Director Westby replied that construction is anticipated to begin in <br /> June. He noted that staff will attempt to work with the homeowner to avoid conflict to the extent <br /> possible. <br /> Mr. Lubarski asked what would happen if his well were to be polluted as a result of the project. <br /> Councilmember Musgrove referenced the parking lot improvement and asked if there would be <br /> more area for infiltration in that area as part of the project. <br /> Assistant City Engineer Feriancek stated that there would be two lowered medians as part of the <br /> design that would handle the first inch of rainfall from the parking lots, which will significantly <br /> reduce the pollutants from the parking lot. He stated that there will also be sump manholes that <br /> collect sediment and unwanted materials. He stated that the water reaching the drainage basin <br /> after the project will be cleaner than it currently is. <br /> Chairperson Riley asked the purpose of having to put in a new pipe rather than leaving the ditch <br /> as is. <br /> Assistant City Engineer Feriancek stated that the existing ditch is very flat and at grade with 161' <br /> until you reach the pond area. He stated that with the storm sewer system they need to maintain <br /> at least four feet of cover over the pipe and then run it at grade to daylight into the pond. He stated <br /> that the outlet for the system is approximately six feet below the existing grade of the pond, which <br /> led to the need for additional depth in the pond. He stated that water currently runs over the street, <br /> which is a safety hazard. He explained that a road would not be designed in that manner today. <br /> Chairperson Riley commented that these are drainage improvements, and the area will drain better <br /> as a result of this project. He asked if the resident was amenable to the concept of transplanting <br /> trees. <br /> Public Works Committee/April 18, 2023 <br /> Page 8 of 9 <br />