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B. Tree Preservation. No development shall be permitted to occur as a part of any new subdivision or newly subdivided lot unless at least thirty (301percent of the predevelopment tree crown cover is retained. The City shall have the authority to consult tree surveys or other data (such as aerial photos) to ensure compliance with this provision. This provision shall apply in addition to other tree preservation and replacement requirements of this ordinance. Where a developer has been found to violate this provision tree replacement for this section shall be required at a rate of one tree per one hundred fifty (150) square feet of ille -all removed crown cover. Trees utilized to meet re lacement re uirements on the subject sit shall be six inch caliper size. minimum. C. IMPERVIOUS SURFACE,. The following impervious surface requiretents shall apply to the development of all single family_p'week in the R -1 Zoning District: a. Thirty (30) Percent maximum coverage excluding impervious surfaces measuring less than one foot in any horizontal dimension. b. Where property owners can show compliance with all setbacks buffer distances and other dimensional standards of this ordiance. this coverage threshold may be exceeded by Conditional Use Permit. subject to the following: Rain gardens or similar on -site drainage measures are taken- - to reduce quantity of overall site run -off from the existing condition. ii. Natural landscaped buffers are installed adjacent to any wetlands, lakes streams or other natural waterways that are located on or abuttin , the roperty. Pervious landscaping elements and other measures are employed to minimize potential increases in impervious surfaces. Related Other Ordinance Changes: Definitions — Lot. Land occupied or to be occupied by a building and its accessory buildings, together with such open spaces as are required under the provisions of this Zoning Regulation, having not less than the minimum area required by this Zoning Ordinance for a building site in the district in which such lot is situated and having its principal frontage on a street, or a proposed street approved by the Council. A lot shall not be considered to be 5 Formatted: Numbered + Level: 1 + Numbering Style: a, b, c, ... + Start at: 1 + Alignment: Left + Aligned at: 1" + Tab after: 0" + Indent at: 1.25" Formatted: Numbered + Level: 1 + Numbering Style: i, ii, iii, ... + Start at: 1 + Alignment: Left + Aligned at: j1.25" + Tab after: 0" + Indent at:2" j trFormatted: Indent: Left: 0 ", First n line: 0" Formatted: Left, Don't adjust space between Latin and Asian text, Don't adjust space between Asian text and numbers