MN wetland Conservation act notice of decision

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1l� 'n Spring Hili Golf Club Sequencing Application Addendum June 20, 2012 Page 2 of 3 The south fill area has been reduced nearly in half from 10,200 square feet(0.23 acres) to 5,400 square feet(0.12 acres). The total wetland fill proposed per the revised plans is 0.48 acres compared to the 0.707 acres originally proposed. A pr+eliminary grading sketch is shown in Figure 1. In Figure 1, the green shaded areas represerrt where erosion control fabric would be placed on the sideslopes. The flll areas are those areas within the heavy dashed black lines and the heavy red lines. Sequencing Flexibilitv For this project, the question of sequencing flexibility comes down to two basfc questions: 1) Is the quality of the wetlands proposed for impact demonstrably degraded such that m�igation would result in a certain galn in wetland function and value and 2) Do the mitigation wetlands provide a certain gain in wetland function and value. We believe that the proposed we�and impact areas are obviously degraded based on their vegetative composifion and that the MnRAM analysis bears this out. We further believe that the mi�ga�on wetlands provide clearly higher functions and values and therefore that flexibility in the sequencing steps is warranted in this case. Please see the discussion below under"MnRAM Anayses". On-Site Mitis�ation The attached Figure 2 shows the approximate area and corifiguration of the proposed on-site wetland mitigation area. (Please ignore the original wetland flll area note and hatching). The design of the on-site mitigation wetland would be wet meadow(Type 2) to avoid having � infested w�h invasive cattails. Although designing for Type 2 will provide ideal habitat for reed canary grass, a management plan would be developed and followed to control reed canary grass and other invasives (see add�ional information under"MnRAM Analyses" below). The exact footprint of wetland and required upland buffer in this area would be developed at a later date but we believe that approximately 20,000 square feet of viretland (15.000 square feet at 75%)and approximately 7,500 square feet of upland buffer(1,875 square feet at 25) could be developed on-site in this location. This would provide approximately 0.39 acres of the required 0.96 acres(0.48 x 2) of mitigation cnedit. The mitigation bank wouid be used for the balance of 0.57 acres. Off-Site Mitis�ation The "Heritage Woods" wetland bank(#1410)would be used to provide the balance of 0.57 acres of mitigation credit not provided on-site. This bank has Type 1, 2 and 4 wetland credit,s as well as upland buffer. it is located in the North Fork Crow River Major Watershed. Spring Hill has had discussions with this bank owner and couid enter into a purchase agreement to acquire the credits at any time. Other Wetland Banks Considered Per the TEP's recommendation at the June 4 meeting, Spring Hill has talked with the City of Wa�2ata's wetland bank corrtact person. As of the date of this memorandum, it is not known whether the City is intending to make their credits available for public sale