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l.) The applicant/and or developer shall maintain the buffer strip for the first year. <br />After that the city, or a party designated by the city, shall maintain the buffer strip. <br />(Commentary: Even after a buffer strip is established it will require periodic <br />inspection and possibly maintenance to ensure that it is functioning properly. <br />Otherwise siltation and channeling may short-circuit the strip's function.) <br />G.) Preservation of or installation of a fifty (50) foot (i.e., 50 feet from each bank) wide <br />vegetated buffer strip of native species providing a stream bank canopy of native trees <br />for the reach upstream of a Minnesota Department of Natural Resources designated trout <br />stream reach and for all tributaries upstream of the designated trout stream reach. The <br />width of this buffer strip must be increases by at least two (2) feet for each one (1) percent <br />of slope of the surrounding land. (Commentary:A "native "tree canopy is preferred, since <br />some non-native trees can out compete native species and create amono-culture of <br />decreased environmental value. Useful references are the Minnesota Pollution Control <br />Agency's "Buffer Zones" and "Soil Bioengineering. " <br />Detailed buffer design is usually site specific. Site specific design criteria should <br />follow <br />common principles and the example of nearby natural areas. The site should be <br />examined for existing buffer zones and mimic the slope structure and vegetation as <br />much <br />as possible. The function of the buffer is a better indicator than the width. Buffer <br />design <br />and protection during construction should do any or all of the following: slow water <br />runoff, trap sediment, enhance water in, f filtration, trap fertilizers, pesticides, pathogens, <br />heavy metals, trap blowing snow and soil, and act as corridors for wildlife. Ilow much <br />stress is put on these functions will determine the buffer zone's final con, figuration. <br />Native plant species have root systems and growth characteristics that are well suited <br />to buffer functions. Useful guides for starting the plant selection include Minnesota <br />Department of Transportation's seeding manual, and their "Plant Selection Matrix" <br />CDROM. Good plant species design stresses diversity and allows plant succession and <br />zoning of the species from wet soil preference to drier upland species.) <br />l .) The applicant/and or developer shall maintain the buffer strip for the first year. <br />After that the city, or a party designated by the city, shall maintain the buffer strip. <br />(Commentary: Even after a buffer strip is established it will require periodic inspection <br />and possibly maintenance to ensure that it is functioning properly. Otherwise siltation <br />and channel cutting may short-circuit the strip's function.) <br />H.) Permanent buildings erected on sites that border directly on and all tributaries directly <br />on a Minnesota Department of Natural Resources designated trout stream must not be <br />occupied until the permanent vegetative cover has been established. Such cover must meet <br />this ordinance's definition of "final stabilization." <br />I.) The applicant must consider methods for reducing the amount of impervious surface <br />1~ <br />