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<br />Subsection 9.20.27 (H-l Highway Business District) Subd. 4 (Standards) n. (Landscaping & Buffering) <br /> <br />2.. Topsoil. All exposed ground areas of a site not occupied by building, <br />parking or storage. excluding natural areas that are left lmdisturbed. shall <br />be covered with four (4) inches of topsoil. as defined in Section 9.02. <br /> <br />3. Sodding: and Ground Cover. All areas not other wise -improved in <br />accordance with approved site plans shall be finished with sod up to the <br />edge of imptoved streets. Any alternative to the sod. requirement shall <br />require City Council approval. <br /> <br />4. Irrigation. <br /> <br />(8).. All landscaping areas. required under this section shall include <br />underground irrigation systems. <br /> <br />(b). Exceptions include natural areas that are left undisturbed. <br /> <br />~2. Parking Lot Landscaping. All parking. lots are required to provide <br />internal overstory tree plantings in an: effort to. shade parking surfaces and <br />provide visual relief. Plantings are required at the following minimum <br />schedule. The planting schedule is established to provide an acceptable <br />number of plantings that may be planted in regular symmetrical patterns or <br />irregular clusters or groupings. - <br /> <br />a. 1 tree per every 10 parking spaces. <br /> <br />b. Every overstory tree planting shall be provided with a planting area <br />of 162 square feet. <br /> <br />c. Acceptable ground cover materials include sod, mulch, and other <br />natural ground cover. Landscaping rock and plastic underlayment <br />is not allowed. ' <br /> <br />d. All parking lot planting areas shall include underground irrigation <br />systems. <br /> <br />, 'J.Q. Bufferyards. This section are intended to be minimum requirements to <br />achieve screening between differing uses with varied intensities and <br />impacts that are not always complementary when adjacent to one <br />another. When a bufferyard is required under this section, the yard, <br />space and planting requirements are not to be reduced for other purposes <br />such as future parking and driveways, building expansions, or other <br />activities that are - not in keeping with the purposes of buffering. arid <br />screemng. <br /> <br />49 <br />