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� ' <br /> Wetlands#1 and#4 on the site were given a protection classification of Manage 1 with an <br /> associated City required buffer width of 35-feet per the 2002 City of Orono Surface Water <br /> management Plan(SWMP). In July 2010 KES completed a MNRAM functional analysis for <br /> Wetland#4. Based on the analysis results, a protection classification of Manage 2 was assigned <br /> to Wetland#4 with an associated City required buffer width of 25-feet. <br /> Minnehaha Creek Water District(MCWD) revised their Wetland Protection Rule in September <br /> 2010. Similar to City of Orono rules,buffers widths are based on the management class of the <br /> wetland as determined by a functional analysis. However, MCWD base buffer widths are wider <br /> than City designated widths. The more restrictive of the widths must be represented on the <br /> grading plan. <br /> Wetland Buffep Ppotection,Augmentation, and Enhance�nent—Existing wetland buffers on <br /> the site have a continuous dense layer of perennial grasses that have been unbroken for at least 10 <br /> consecutive years. Buffer adjacent to Wetland 1 and Wetland 4 will be enhanced through <br /> removal and management of invasive species. BufFer adjaeerit to the southeast boundary of <br /> Wetland 2 will also be enhanced through removal and management of invasive species. <br /> Buffer immediately adjacent to the northwest boundary of Wetland 2 is currently dominated a <br /> canopy of sumac and an understory of grasses. However,beyond this shrub community is a <br /> former yard/playground. Wetland buffer within this area will be restored per the criteria of City <br /> Ordinance Section 78-1605(b)(3). <br /> Ecological Management Categopy Review-The site was assessed for City of Orono Ecological <br /> Management Category(EMC) ratings (City Code Sec. 78-1635(9)(4)),and Figure 5 illustrates <br /> observed category areas. Level 1 EMC areas are associated with wetlands and their buffers. <br /> Leve13 EMC areas are suitable for stormwater management. No Leve12 EMC areas"(ecological <br /> opportunity areas)were observed on the site. <br /> Invasive Species and Diseased Tree Removal Plan <br /> Invasive Species Removal and Management Plan—Areas with invasive species observed on the <br /> site are illustrated in Figure 6. The two primary invasive species identified on the site were <br /> common buckthorn and garlic mustard. Detailed garlic mustard and common buckthorn <br /> management plans are included in Appendix C. Trace amounts of common burdock and <br /> honeysuckle were also observed within area GM1. Methods outlined for garlic mustard and <br /> common buckthorn control will generally.be effective for common burdock and honeysuckle <br /> control, respectively. <br /> Future seeding of invasive species management areas is not anticipated because cut stump <br /> treatment and foliar spraying of buckthorn and garlic mustard should not result in bare soil or un- <br /> vegetated areas. As invasive species comprise less and less cover over time, native species aze <br /> • `released'. Native species that have been dormant under the canopy of invasives are expected to <br /> naturally come back on their own. , <br /> ������E� <br /> , � Page 3 of 4 JAN 19 2 011 <br /> = .� a <br /> <� � CITV OF ORO�1� ' � � � � �� <br />