Agenda - Council - 08/28/2001 - Laserfiche WebLink

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Centex Addition Preliminary Plat Review August 21,2001 Page 3 of 6 None of the cul-de-sacs exceed the 600 foot maximum length restriction except the easterly terminus of 155th Lane, which is approximately 605 feet long. A modification to the plan or a variance will be required. All cul-de-sacs should have a minimum 50 foot radius. Proposed grades and curve data should be included on the plat to determine compliance With standards set forth in the City's Zoning and Subdivision Chapter of City Code. Utility Plan: The plat will be served by municipal water and sanitary sewer. A utility plan has been submitted and is generally acceptable. Water must be looped on Alpine Drive (153~d Lane N.W.) and connected to the west and east. A lift station is being proposed to service a portion of the subdivision. This review is not an approval of the elevation proposed on the plan. A review is underway to determine whether the sewer should be constructed deeper in order to service a larger area. Grading and Drainage and Easements: Th~ subdivision proposes to drain to the center of the plat and provide an overflow to the Rum River via the north picking up the low areas in the parks west of Yakima Street and south of 156th Lane N.W. Aso, as part of the Stormwater Management Plan, there is a provision to provide an overflow storm sewer along Alpine Drive (153ra Avenue N.W.) to drain lowland east of Ute Street and south of Alpine Drive. This overflow should be completed with this subdivision as a portion of the pipework would be in the plat. The proposal indicates that these outlets Would be constructed "by others". The specifics of who and when these overflows are to be constructed needs to be identified prior to final plat approval. A Lower Rum River Water Management Organization (LRRWMO) permit will be required for this plat. Although a cursory review of t___he National Wetlands Inventory Map indicates the absence of wetlands, the presence and 'protection of wetlands must be identified as part of the LRRWMO permitting process. There does not appear to be drainage and utility-~asements of sufficient size for the ponds and storm sewer pipes. There should be a minimum 20 foot drainage and utility easement on all lot lines that have public utilities for maintenance potential and all areas where there are storm sewers. There should also be a drainage and utility easement to the 100 year High Water Level for the ponding that is being proposed. The standard 10 foot (5 feet on common property lines) drainage and utility easements around the perimeter of each lot should be shown on the final plat.