11/05/2012 Council Packet - Laserfiche WebLink

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WS — Item 8 WORK SESSION STAFF REPORT Work Session Item 8 Date: November 5, 2012 To: City Council From: Michael Grochala Re: NE 35E Area Drainage Study Background Over the past three years staff has been working with property owners in the northeast quadrant of the 35E interchange to evaluate planning alternatives and economic development opportunities. One of the original core issues was the establishment of a right -of -way corridor for Otter Lake Road. This step has been completed and the first 400 feet of roadway is being considered for construction in 2013. The second major issue, which may have the largest impact on development in this area is drainage. The majority of land north of Main Street lying east of 35E drains to County Ditch 55, under 35E and ultimately to Clearwater Creek. Land within this area is poorly drained with clay soils that has minimal infiltration capacity. Additionally, the tile line that conveys water from this area was constructed in the early 1900's for agricultural purposes. It does not have the capacity to carry runoff from developing properties. The Rice Creek Watershed District is in the process of completing a ditch repair report for Ditch 55. This report includes additional background on the capacity of the system and its limitations. Given the constraints of the system and need to balance agricultural, development and public infrastructure needs, a comprehensive management plan is needed for this area. Addressing both water quality and volume requirements within this area will have an impact on the developability of property within the corridor. Since this is an area of high importance from an economic development perspective, it appears to be in the best interest of the city and land owners to develop a plan that identifies the best options for stormwater treatment and storage, preservation of natural areas and establishment of a preferred conveyance system and routing for stormwater. To assist the City at staff's request, WSB has proposed the preparation of a "Guide Plan" that would evaluate the drainage characteristics of the area, infrastructure needs, and land use and provide recommendations for improvements. The plan would serve as a tool for review of future development. WSB has proposed to complete this work through preparation of a draft plan for $16,500. Funding would be provided out of the engineering budget. Requested Council Direction Staff is requesting council discussion and interest in pursuing preparation of the "Guide Plan ". Attachments 1. General Location Map