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, , Memorandum �Bonestroo Date: 2335 Highway 36 W To: Evelyn Turner Project: 3768 North Shore Drive 10/25/20 St.Paul,MN 55113 Q] Tel 651-636�1600 Fax 651�36-1311 From: John Smyth,CWD Client: City or Orono wwuu.bonestroo.com Re: Wetland Buffer Ordinance Review Memo File No: 139-07000-1 Remarks: Per section 78-1601 of the Wetland Ordinance the new home construction will trigger wetland buffers and setback for the proposed project at 3768 North Shore Drive. According to the submitted building plan one wetland has been delineated within the property boundaries at 3768 North Shore Drive (Cty 19). The wetland is classified as Preserve and requires a 50 foot upland buffer and 20 foot setback from the buffer. The survey appears to show a 25 foot buffer on Lots 3, 4, and 5 and a larger buffer on lots 1 and 2. Although not formally requested it appears the applicant may be proposing buffer flexibility as described under 78-1608 (3)Noncoformities. This does not appear to be appropriate because this is a proposed new structure and"nonconformities" as described in the Wetland Ordinance require an existing structure to be present. Buffer Condition and Requirements A site evaluation was completed on 25 October 2007 to determine the condition of the vegetation in the existing upland buffer. Currently a large portion of the buffer is turf grass and the remainder of the buffer has been left in a natural wooded condition. The wooded portion of the buffer currently contains buckthorn. According to Division 3 sec. 78-1605 turf grass and buckthorn are considered to be an undesirable plant species and should be removed from the buffer area. After the turf is removed it is required to be planted or seeded with native species. The applicant will need to provide 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.