Minutes - Public Works Committee - 11/19/2002

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• Principal City Engineer Olson stated that staff also presented the costs to maintain the dirt roads and a maintenance schedule. Councilmember Hendriksen inquired if staff could estimate what it costs to maintain a dirt road. Principal City Engineer Olson replied that those are numbers that will be included in the feasibility study. Councilmember Hendriksen stated that what it looks like to him is that maintaining the dirt roads isn't scheduled in the program for 18 years. Principal City Engineer Olson replied that the reason it is that way is they do not have the feasibility studies completed. If there is a consensus to provide maintenance to the dirt roads then those figures will be included in the program. Councilmember Hendriksen stated that he thinks that those people that chose to live on a dirt road need to pay there for fair share of their maintenance costs, but if their choice is to pay for it in its current condition or upgraded should be their decision. Councilmember Zimmerman stated that he thought staff has done a good job in putting together a street maintenance program and spreading out the projects. Case #2: Update to the 1551h Lane NW Storm Sewer Project Principal City Engineer Olson stated that as part of the construction of the four developments located on the northwest quadrant of T.H. #47 and Alpine Drive, dewatering was necessary to install some deep utilities. The contractor for Wildlife Sanctuary, S.J. Louis, Inc., applied and received a DNR appropriations permit for those dewatering activities. Since the dewatering began, they have run into some issues with the water that is being pumped into the wetland east of T.H. #47. There has been numerous discussions with the residents that live around the DNR wetland located east of T.H. #47 and north of Alpine Drive NW. The residents generally concerned with the level that the water reaches before entering into the culvert that was installed on the west side of 1551h Lane NW. One thing staff has noticed is that the drainage and utility easements are not at the wetland delineated limits. The wetlands were delineated this year to determine where they could place the pipe without draining the wetlands. The drainage and utility easements in some cases are under water. The purpose of t he c ase w as t o d iscuss t he proj ect and d iscuss t he p ossibility o f p urchasing t he e asements n ecessary t o a chieve t he 1 evel necessary during a 100-year rainfall event. Hakanson Anderson Associates provided a model of the storm sewer and updated the Southeastern Stormwater Plan as part of the design work for those developments. The 100-year design elevation is expected to reach an elevation of 864. Councilmember Hendriksen inquired if they would only, be purchasing the easements to accommodate dewatering for a short period of time. Public Works Committee/November 19, 2002 Page 7 of 15