10-19-1987 Planning Packet - Laserfiche WebLink

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Zoning File #1211 October 13, 1987 Page 2 of 2 5. City Engineer Glenn Cook has revi«' ed the proposed driveway location and has walked the wetland both within and outside the existing drainage easement area. He concurs with staff that the wetland area is more extensive than previously existed and that it is appropriate to allow the driveway to cut across the existing drainage easement in the shortest, least disruptive way possible. Glenn's comments also were that the 24" culvert proposed under that driveway should be reduced to 12" in order to provide some additional flood water retention or storage area. Glenn also recommends that an area equivalent to the area of the proposed driveway be granted as additional drainage easement/designated wetland along the north, east, and south perimeter of the existing easement as shown in the staff sketch (Exhibit E), 6. This proposal has been submitted to the Minnehaha Creek Watershed District. Applicant should be advised that a watershed district permit may be required. 7. The applicant's surveyor has calculated the area within the property and above the 952 contour as 2.6 acres of dry buildable land, hence, granting of an additional conservation and flowage easement below 952 will have no effect on the buildable area of the pi.^perty. Staff would also note that because of the elevation of the drainageway and culvert underneath Orono Oaks Drive and because of the apparently variable nature of this wetland, it is net necessarily appropriate to require a wetland easement all the way up to the 952 contour at this time. Staff Recommendation - Staff recommends approval of a conditional use permit and variance to allow the proposed driveway location cutting across the shortest route to gain access to the building site on Lot 7, Block 1 of Orono Oaks, per the proposal. Staff would further recommend the following conditions on that approval: 1. Culvert underneath driveway to be 12" in diameter. 2. Applicant is advised to contact the Minnehaha Creek Watershed District for any permits they may require. 3. Proposed driveway shall be no wider than 14' at the driving surface and shall maintain 3:1 slopes as proposed by the designer. Total width of the corridor taken up by the drivew'.y and fill shall not exceed 35'. 4. Applicant's surveyor shall describe by metes and bounds an additional area of wetland to be designated by drainage easement and through a conservation and flowage easement equivalent to the area between the 952 contours that will be obliterated by a driveway. Applicant shall grant a flowage and conserv.ition easement over that additional area.