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(2) Unacceptable buffer areas have the following qualities, including but not <br /> limited to: <br /> a. Undesirable plant species (including but not limited to reed canary <br /> grass, common buckthorn, purple loosestrife, leafy spurge and <br /> noxious weeds), or <br /> b: Lacking a layer of organic thatch or duff, or <br /> c. Topography which tends to channelize the flow of surface runoff, � <br /> 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 (10) <br /> consecutive years must be restored to a condition consistent with an <br /> acceptable buffer area defined in Section 78-1605(b)(1), a restoration or <br /> landscape plan must be submitted to the Planning Director, which <br /> restoration shall include, replanting and maintaining according to each of <br /> the following guidelines: <br /> a. Buffer azeas shall be planted with a seed mix containing one <br /> hundred (100%)percent perennial native plant species, except for a <br /> one-time planting of an annual nurse or cover crop such as oats or <br /> rye• <br /> b. The seed mix to be used shall consist of at least twelve (12)pounds <br /> pure live seed (PLS) per acre of native prairie grass seed and five <br /> (5) pounds PLS per acre of native forbs. Native prairie grass and <br /> native forb mixes shall contain no fewer than four (4) and five (5) <br /> species respectively. <br /> c. The annual nurse or cover crop shall be applied at a rate of twenty <br /> (20)pounds per acre. <br /> d. Native shrubs and or trees may be used in addition to forbs and <br /> grasses. Shrubs shall be distributed so as to provide a natural <br /> appearance and shall not be planted in rows. <br /> e. Native prairie grasses and forbs shall be planted by a qualified <br /> contractor. <br /> f. No fertilizer shall be used in establishing new buffer zones, except <br /> on highly disturbed sites when deemed necessary to establish <br /> acceptable buffer vegetation and then limited to amounts indicated <br /> by an accredited soil testing laboratory. <br /> Page 6 of 22 <br />