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(5) <br />All open trenching is prohibited. Utility installation within the dripline of protected <br />trees, during construction or thereafter, can only occur using trenchless methods. <br />(6) The mowing, clearing, and grubbing of brush located within or under the dripline of <br />protected trees may be allowed, provided such mowing, clearing, or grubbing is <br />accomplished by hand or by mowers. The use of heavy equipment for this purpose <br />shall not be allowed. <br />Removal threshold. <br />(1) Within residential developments, no more than 60 percent of the inches of existing <br />significant tree DBH shall be removed. <br />(2) Within business and employment developments, no more than 70 percent of the inches <br />of existing significant tree DBH shall be removed. <br />Significant trees removed for water quality treatment ponds, public trails and <br />sidewalks, and arterial and collector streets as defined herein, or significant trees that <br />are considered invasive species, are infested with Emerald Ash Borer, or infected with <br />Oak Wilt or Dutch Elm Disease, are considered exempt from the removal threshold <br />calculation. <br />(3) <br />Reforestation/restitution requirement. If a development exceeds the removal threshold <br />specified in subsection (e) above, the developer shall either reforest areas within the site, <br />pay restitution, or some combination thereof. For every one significant tree inch that is <br />removed in excess of the removal threshold, the developer shall replant 1.25 inches (caliper) <br />of new trees or provide the city with $125.00 in restitution. <br />Reforestation/restitution plan. <br />(1) If the total number of significant tree inches to be removed exceeds the removal <br />threshold, the developer shall provide a reforestation plan, or a calculation of <br />restitution, or a combination thereof. <br />(2) A reforestation plan shall be prepared by a registered landscape architect or forester <br />and shall comply with the following criteria: <br />a. The plan shall indicate the location and diameter (or height if coniferous; for each <br />three feet in height is equivalent to one caliper inch) of all reforestation trees to be <br />planted. This can be included on the landscape plan, but the reforestation <br />calculation, trees, and inches, must be specified. <br />b. Size at the time of planting shall comply with the planting standards outlined in <br />the applicable landscape standards for the respective zoning district. <br />c. No more than 25 percent of the reforestation trees shall be from any one species. <br />d. Replacement trees in the reforestation plan may count toward the trees required by <br />the city's landscaping regulations. <br />e. Restitution, if applicable, shall be paid in cash to the city prior to the release of the <br />final plat mylars for recording, or, if a plat was not required, prior to the issuance <br />of a building permit subject to site plan review. Any restitution paid shall be <br />Ordinance #26-09 <br />Page 3 of 4 <br />