05/05/91 - Laserfiche WebLink

Home

o _Wetlands: DNR Wetland #2-658W is located on the north end of the property. Ail lots should meet minimum areas (10,800 square feet) based upon land area above the OHW. The ordinary high water elevation of this wetland has been established by DNR as 860'. Lots 1 through 24 of Block 3 are affected by this wetland. Only Lot 13 of this block appears to fall substantially below this elevation with an area of less than 8,000 square feet above OHW. ~;oils. As noted in Item 5 above, Lots 1 through 24 of Block 3 are adjacent to wetlands. Staff is recommending that a grading plan be submitted showing the proposed lowest floor elevations for proposed structures on these lots. Soil borings should also be submitted showing depth to groundwater. ~ The development drains northward to DNR Wetland 2-265W. The following comments should be incorporated in the final plat: a) Drainage from Sunfish Lake Drive west of Erkium Street will flow onto the property of John and Darlene Katnis. Either permission from the Katnis' needs to be obtained or provisions for intercepting this runoff must be made. h) The closed conduit storm sewer system proposed needs to be expanded such that overland runoff generally does not exceed 800 feet. The storm sewer should be extended to drain the intersection of 147th and Fluorine and halfway down Germanium Street between 148th Lane and Sunfish Lake Drive. c) The drainage plan, and in particular the wetland discharge designs, are subject to the review of the Lower Rum River Water Management Organization and the Department of Natural Resources. d) The County Highway Department has commented that no additional drainage should be directed to the ditchline of County Road #5. The development of tots adjacent to County Road #5 would appear to cause additional runoff to the County ditch, t would recommend a yard drain be placed at the intersection of County Road #5 and Sunfish Lake Drive to address this concern of the County. Streets: The proposed cul-de-sacs are within the 600 foot maximum length allowed. Also, there is a proposed connection provided to 149th Lane to the north. These are both positive aspects. In accordance with the City's Thoroughfare Plan, Sunfish Lake Drive N.W. will be constructed to MSA standards as a collector street. In accordance with the City Engineer's recommendations at the sketch plan stage, the intersection of the proposed collector street with County Road #5 has been designed with ~ appropriate tangent section. In addition, reverse curves without tangent sections have been eliminated and interior streets intersect as tangent sections.