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Memorandum ORONO C0� �Bonestroo 233i Highway 36 W To: (hristine Mattson Project: 805 Forest Arm Date: 12/19/201 I S[.Paul,MN 55113 From: f ohn Smyth Client fity or Orono Tel 651-636-4600 Fax 651-636-131I Re: Wetland Buffer Ordinance Compliance file No: 139-I1000 www.bonescroo.com Remarks: The proposed site improvements trigger the requirements of the City wetland code. The wetland classification map indicates one wetland is located within the property and is classified as a Preserve with a 50 foot buffer. A site visit verified the wetland is present and an estimate of the wetland boundary was completed for purposes of determining the extent of buffer and setback. In the future if work is proposed within 10 feet of the wetland boundary estimate a formal wetland delineation should be completed. The proposed house and deck locations are outside the setback of the buffer. Currently there is turf and buckthorn within the buffer. The buckthorn is concentrated on the slope off of County Road No. 151. Buckthorn and turf found in the buffer are considered to be an undesirable plant species and are required to be removed from the buffer area. Due to the density of the buckthorn within the buffer the area will need to be seeded or planted with native species once the buckthorn is removed. In addition the turf areas of the buffer will need to be seeded or planted with native vegetation. Per the wetland code a 8 foot wide mowed path can be maintained across the buffer to provide access to the dock. The remainder of the buffer cannot be mowed once the native vegetation is established, unless it is part of a native vegetation management plan. The applicant will need to provide a ManagemenULandscaping plan that includes the following: 1. Method proposed to be used to control buckthorn and remove the turf grass (MN DNR website source for options). 2. Method of establishing native vegetation in buffer. (MN BWSR Web Site— Publication: "Restoring & Managing Native Wetland and Upland Vegetation" source for options). 3. Species proposed to be seeded or planted. According to the ordinance Div. 3 Sec. 78-1605 (3)the seed mix must contain at least 12 pounds (PLS) per acre of native prairie grass seed and 5 pounds (PLS) per acre of native wildflower seed. The grass mixture must contain a minimum of four species while the wildflower mixture must contain a minimum of five species. (MN BWSR Web