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B. Tree Preservation. No development shall be permitted to occur as a part of any <br />new subdivision or newly subdivided lot unless at least thirty (30 )_percent <br />of the predevelopment tree crown cover is retained. The City shall have <br />the authority to consult tree surveys or other data (such as aerial photos) to <br />ensure compliance with this provision. This provision shall apply in <br />addition to other tree preservation and replacement requirements of this <br />ordinance. Where a developer has been found to violate this Rrovision, <br />tree replacement for this section shall be required at a rate of one treeper <br />one hundred fifty (150) square feet of illegals removed crown cover. <br />Trees utilized to meet replacement requirements on the subject sit shall be <br />six inch caliper size minimum. <br />C. IMPERVIOUS SURFACE. The following impervious surface requirements <br />shall apply to the develoment of all single family parcels in the R-1 <br />Lpnin_g_I>istrict: <br />a. Thirty (30) Percent maximum coverage, excluding impervious <br />surfaces measuring less than one foot in any horizontal dimension. <br />b. Where property owners can show compliance with all setbacks buffer <br />distances and other dimensional standards of this ordiance this <br />coverage threshold may be exceeded by Conditional Use Permit' <br />subject to the following <br />Rain gardens or similar on -site drainage measures are taken <br />to reduce quantity of overall site run -off from the existing <br />condition. <br />ii. Natural landscaped buffers are installed adjacent to any <br />wetlands. lakes, streams, or other natural waterways that <br />are located on or abutting the property. <br />Pervious landscaping elements and other measures are <br />employed to minimize potential increases in impervious <br />surfaces. <br />Formatted: Numbered + Level: 1 + <br />Numbering Style: a, b, c, ... + Start <br />at: 1 + Alignment: Left + Aligned at: <br />1 + Tab after: 0 + Indent at: <br />1.25" <br />Formatted: Numbered + Level: 1 + <br />Numbering Style: i, a, iii, ... + Start <br />at: 1 + Alignment: Left + Aligned at: 1 <br />1.5" + Tab after: 0" + Indent at: 2" <br />Formatted: Indent: Left: 0 ", First <br />I line: 0" j <br />