Laserfiche WebLink
� l <br /> b. Lacking a layer of organic thatch or duff, or <br /> c. 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 years <br /> must be restored to a condition consistent with an acceptable buffer area defined in <br /> section 78-1605(b)(1), a restoration or landscape plan must be submitted to the planning <br /> director, which restoration shall include, replanting and maintaining according to each of <br /> 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 (PLS) <br /> per acre of native prairie grass seed and five pounds PLS per acre of native <br /> forbs. Native prairie grass and native forb mixes shall contain no fewer than four <br /> and five species respectively. <br /> •y•� c. The annual nurse or cover crop shall be applied at a rate of 20 pounds per acre. � . <br /> d. Native shrubs and or trees may be used in addition to forbs and grasses. Shrubs <br /> shall be distributed so as to provide a natural appearance and shall not be <br /> 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 establishing 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 /> g. All seeded areas shall be mulched immediately with clean straw at a rate of one <br /> 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 /> (c) Buffer area widths will be based on the wetland protection strategies established in the <br /> Orono Surtace Water Management Plan (SWMP) (December 2002). A protection classification has been <br /> assigned to each wetland in Orono based on the stormwater susceptibility and functional assessment for <br /> each wetland. The four protection classifications are described as follows: <br /> Protection Susceptibility Rating Description <br /> Classification <br /> "Preserve" Highly Susceptible Highly susceptible to <br /> both quantity and <br /> quality impacts from <br /> runoff; have the <br /> highest degree of <br /> rotection <br /> � � <br />