01/26/2005 Env Bd Packet - Laserfiche WebLink

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• • Agenda Item 5A Environmental Board Meeting Date: January 26, 2005 Topic: Marshan Lakeview, James Funkhauser, 595 Marshan Lane, and Preliminary Plat. Background: Location map is included as Attachment 1. The proposed development is just South of Lino Lakes City Hall and at the West End of Marshan Lane. Sewer and water connects into this development from Marshan Lane. The proposal consists of 2.79 acres of land. There is 2.27 acres of upland. There is an indicated 0.5 acres of wetland. The property is zoned R -1, and is guided for low- density single family. The property is in MUSA. Analysis: Shoreland Area Attachment 8 shows the approximate Shoreland Area. The project falls in a Shoreland Overlay District. Because of the proposed project's proximity to Marshan Lake, excellent steps should be taken to ensure water quality integrity to Marshan Lake. These steps should include a designated buffer, native plantings, vegetation and soils protection measures, NPDES BMPs, Signage, and an education plan for new residents. Surface Water and Soils Management It appears that much of the surface water from the proposed project flows to a proposed pond on the South side of the proposed cul -de -sac. Silt fence is indicated at the Wetland edge on the South side of the development and is shown as tree - preservation fence on the rest. Storm water calculations must be verified for the 2, 10, and 100 year storm event. Water should be directed from all roofs and impervious areas to open space and pervious areas. The southern area indicated as yellow on Attachment 8 falls within the "3% slope or greater" threshold within 200 feet of the lake. This means that NPDES requires that this area have a minimum of 7 days that exposed soils can remain unstable. This site must have temporary erosion protection or permanent cover within 7 days. The NPDES lists action steps that must be taken to ensure erosion control. The permit must be on site at all times. The developer should indicate an area where their permit information and inspection reports are available for inspection.