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WS – Item #1 WORK SESSION STAFF REPORT Work Session Item No. 1 Date: April 4, 2016 To: City Council From: Diane Hankee and Katy Thompson, WSB Engineering Re: NE Lino Drainage Feasibility Study Update Background WSB & Associates, Inc. (WSB) was tasked to prepare a Feasibility Study for the proposed Peltier Lake outfall in northeastern Lino Lakes, Minnesota. The project seeks to determine the economic and environmental impacts of providing a new outfall to Peltier Lake. The Northeast area of Lino Lakes is bound by Main Street to the south, the City of Hugo to the east, and Peltier Lake to the west and Rehbein Street to the north. It includes portions of Lino Lakes, Centerville, and Hugo. Land use in this area is predominantly agricultural. A majority of this watershed currently drains to the south via field drains to Clearwater Creek and ultimately to Peltier Lake. Clearwater Creek has had a history of significant bank erosion problems and Peltier Lake is impaired for nutrients, with phosphorus having been identified as the main pollutant. The surface water in the Northeast area of Lino Lakes was landlocked until the installation of agricultural field drains in the early 20th century. The agricultural drainage systems have limited capacity, and as such, cannot convey any additional runoff from development within the watershed. In addition, the agricultural drains do not provide any water quality benefits for Peltier Lake and Clearwater Creek. The Northeast Lino Lakes Area Drainage Feasibility Study update evaluates water quality improvements and a new surface water outlet to Peltier Lake. The purpose of the feasibility study is to: • Confirm modeling results and parameters • Examine design alternatives and develop a preferred alternative • Prepare preliminary plans and cost estimates • Develop and recommend proposed alignment • Identify effected property owners and stakeholders • Identify all necessary permits • Identify potential funding options Council authorized completion of the feasibility study in September 2015. The draft