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MunlCOde ra�c � vi i� <br /> An over story of trees and/or shrubs with at least 80 percent canopy closure <br /> that have been uncultivated or unbroken for at least ten consecutive years, or <br /> �• A mixture of the plant communities described in a. and b. above, which have <br /> been uncultivated or unbroken for at least ten consecutive years. <br /> (2) Unacceptable buffer areas have the following qualities, including but not limited to: <br /> a• Undesirable plant species (including but not limited to reed canary grass, <br /> common buckthorn, purple loosestrife, leafy spurge and noxious weeds), or <br /> b• Lacking a layer of organic thatch or duff, or <br /> �• Topography which tends to channelize the flow of surface runoff, or <br /> d• Is characteristically unlikely to retain nutrients and sediment. <br /> �3) Buffer areas which have been broken or cultivated within the past ten consecutive <br /> years must be restored to a condition consistent with an acceptable buffer area <br /> defined in section 78-16Q5(b)(1), a restoration or fandscape plan must be submitted to <br /> the planning director, which restoration shall incfude, replanting and maintaining <br /> according to each of the following guidelines: <br /> a• Buffer areas shall be planted with a seed mix containing 100 percent perennial <br /> native plant species, except for a one-time planting of an annual nurse or cover <br /> crop such as oats or rye. <br /> b� The seed mix to be used shall consist of at least 12 pounds pure live seed <br /> (PLS) per acre of native prairie grass seed and five pounds PLS per acre of <br /> native forbs. Native prairie grass and native forb mixes shall contain no fewer <br /> than four and five species respectively. <br /> �� The annual nurse or cover crop shall be appfied at a rate of 20 pounds per <br /> acre. <br /> d• Native shrubs and or trees may be used in addition to forbs and grasses. <br /> Shrubs shall be distributed so as to provide a natural appearance and shall not <br /> be planted in rows. <br /> e� Native prairie grasses and forbs shall be planted by a qualified contractor. <br /> f� No fertilizer shall be used in estabfishing new buffer zones, except on highly <br /> disturbed sites when deemed necessary to establish acceptable buffer <br /> vegetation and then limited to amounts indicated by an accredited soil testing <br /> laboratory. <br /> 9• All seeded areas shall be mulched immediately with clean straw at a rate of <br /> one and one-half tons per acre. Mulch shall be anchored with a disk or tackifier. <br /> h• Buffer areas (both natural and created), shall be protected by silt fence during <br /> construction and the fence shall remain in place until the area crop is <br /> established, and at that time the fence shall be removed. <br /> (�) Buffer area widths will be based on the wetland protection strategies established in the <br /> Orono Surface Water Management P{an (SWMP) (December 2002). A protection <br /> classification has been assigned to each wetland in Orono based on the stormwater <br /> susceptibility and functional assessment for each wetland. The four protection classifications <br /> are described as follows: <br /> Protection Susceptibility Description <br /> Classification Rating <br /> http://library.inuni code.com/print.aspx?h=&clientID=13 094&HTMRequest=http%3 a%?�%... 3!�/2013 <br />