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7. Locations and details of other landscape features, including berms,fences and planter boxes; <br /> 8. Details of restoration of disturbed areas, including areas to be sodded and seeded; <br /> 9. Location and details of irrigation systems;and <br /> 10. Details and cross sections of all required screening. <br /> b. Minimum landscaping requirements. <br /> 1. All open areas of a lot which are not used or improved for required parking areas, drives,trails or storage <br /> shall be landscaped with a combination of deciduous and coniferous species, including overstory trees, <br /> understory trees,shrubs,flowers and groundcover materials.The plan for landscaping shall include <br /> ground cover, bushes,shrubbery,trees,sculpture,foundations,decorative walks or other similar site <br /> design features or materials in a quantity having a minimum value in conformance with the following <br /> table: <br /> Minimum Tree and Shrub Requirements <br /> Vegetation Type Size Quantity <br /> Overstory deciduous 2.5-inch bb(Caliper) One tree per 1,000 gross square feet of building <br /> trees footprint area or one tree per 40 lineal feet of site <br /> perimeter,whichever is greater. <br /> Coniferous trees 6-foot height bb Minimum of 30 percent of required overstory trees <br /> must be coniferous <br /> Understory shrubs 3-gal. potted or 18-inch One shrub per 300 gross square feet of building <br /> footprint area or one shrub per 30 lineal feet of site <br /> perimeter,whichever is greater. <br /> Ornamental deciduous 1.5-inch bb(Caliper) Not required; but two ornamental deciduous trees <br /> trees may be substituted for one required overstory <br /> deciduous tree(maximum substitution equals 25 <br /> percent of required overstory deciduous trees) <br /> Credits for existing trees:The city council shall have sole discretion whether credit shall be granted for existing <br /> healthy trees <br /> In instances where healthy plant materials of acceptable species exist on a site prior to its development, <br /> the application of the standards in subsection(14)b of this section may be adjusted by the city to allow <br /> credit for such material,provided that such adjustment is consistent with the intent of this division. <br /> 2. A reasonable attempt shall be made to preserve as many existing trees as is practicable and to <br /> incorporate them into the site plan. <br /> 3. All new overstory trees shall be balled and burlapped or moved from the growing site by tree spade. <br />