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Memorandum Bonestroo To: Christine Mattson Project 3645 Too Road 2335 Paul, MRHighway 36 W 1 8 Date: 12/8/201 I Sc Pau4 MN 55113 From: John Smyth Client City or Orono Tel 651.636-4600 Fax 651-636.1311 Re: Wetland Buffer Ordinance Compliance File No: 139-11000 www.bonestroo.com Remarks: The proposed site improvements trigger the requirements of the City wetland code. The estimated wetland boundary shown on the certificate of survey dated 9/26/11 was reviewed in the field on 12/8/11 and was found to be adequate for determining the extent of wetland buffer. The location of the upslope edge of the wetland buffer shown on the certificate of survey is acceptable. Buffer Yegeta6on Aequirom" There is a small portion of the buffer that is currently turf. The turf area will need to be restored to native vegetation. A plan that provides the location of seeding, proposed native seed mix to be seeded and method of site preparation and seeding should be provided. According to the ordinance Div. 3 Sec. 18-1605 (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 Wetland and Upland Vegetation' source for options). Once the native vegetation is established the buffer area will not be allowed to be mowed unless it is for maintenance after October I S. Wetland Buller Markus It is recommended that at least two markers are placed at the upland boundary of the wetland buffer edge. Regions It is recommended that the items in this memo are addressed prior to approval. An escrow amount for$600 is recommended to cover the cost of buffer development if not completed by the applicant and compliance checks.