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Memorandum �Bonestroo Project: Safar Parcel-Partenwood 2335 Highway 36 W To: Melanie Curtis Road �ate: 12/8/2009 St.Paul,MN 55113 From: John Smyth Client: City or Orono Tel 651-636-4600 Fax 651-636-1311 Re: Wetland Buffer Ordinance File No: 139-09000 www.bonestroo.com Remarks: The proposed building triggers the requirements of the wetland ordinance. The site investigation took place on 12-8-09. Frozen soil conditions required a wetland boundary estimate rather then a formal delineation. A formal delineation will likely be required by the City prior to issuance of the certificate of occupancy. The wetland boundary was marked in the field with pink ribbon tied to shrubs and trees. The boundary is marked at a tlistinct topographic and vegetative break.There is one wetland located on the lot and it has a Manage 3 classification. This classification requires a 16.5 foot buffer and 20 foot setback from the buffer. Buffer Condition and Requirements The buffer is predominately oak woodlantl and has a significant amount of buckthorn in the understory. According to Division 3 sec. 78-1605 buckthorn is considered to be an undesirable plant species and should 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 removetl. The applicant will need to provitle a Management/Landscaping plan that includes the following: 1. Method proposed to be used to control buckthorn (MN DNR website source for options). All buckthorn removal should be done using hand tools as large equipment can further disrupt the wetland buffer. At a minimum buckthorn should be cut and the remaining stems should be treated with an approved herbicide following label instructions. Treating the cut stumps will help prevent regrowth of the buckthorn. 2. Method of establishing native vegetation in buffer for areas. (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 Site—Publication: "Restoring& Managing Native Wetlantl and Upland Vegetation" source for options). 4. A schedule of activities that are part of the management antl maintenance for the removal of buckthorn and the establishment of vegetation in the buffer shall be provided.