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Exhibit B <br />ORDINANCE Exhibit A - Page 42 of 66 <br />4. Mitigation requirements may be determined using the Credit-Debit Method described in <br />Calculating Credits and Debits for Compensatory Mitigation in Wetlands of [Western <br />Washington (Ecology Publication #10-06-011) <br />5. Plantings used in mitigation actions shall be native species appropriate to the ecoregion. <br />6. The following areas within a proposed compensation site shall not contribute to satisfying the <br />requirements for compensatory mitigation: <br />a. Easements for utility corridors, stormwater facilities, rights-of-way, and streams <br />conveyed underground <br />b. Driveways <br />c. Roads <br />d. Any paved or graveled areas intended to convey vehicle or foot traffic. <br />7. Buffers on Wetland Mitigation Sites. All wetland mitigation sites shall have buffers consistent <br />with the buffer requirements of this Chapter. All required buffers for the wetland mitigation site <br />shall be located on the subject site, except where wetland mitigation banking is used to <br />purchase buffer credits. Buffers shall be based on the expected or target category of the <br />proposed wetland mitigation site and the expected level of impact from the adjacent land use. <br />Buffers need to be fully vegetated in order to be included in buffer area calculations. Lawns, <br />walkways, driveways, paved areas, and mowed or developed areas will not be considered <br />buffers or included in buffer area calculations when assessing whether adequate compensatory <br />mitigation buffers have been provided. Properties adjacent to or abutting wetland mitigation <br />sites shall not be responsible for providing any additional buffer requirements. <br /> 8. Construction techniques and field marking of areas to be disturbed shall be approved by the <br />city prior to site disturbance to ensure minimal encroachment. <br /> 9. The city may require the applicant to rehabilitate a wetland or its buffer by removing debris, <br />sediment, nonnative vegetation, or other material detrimental to the area by replanting <br />disturbed vegetation, or by other means deemed appropriate by the city. Rehabilitation or <br />restoration may be required at any time that a condition detrimental to water quality or habitat <br />exists. <br />C. Compensating for Lost or Impacted Wetland Functions. Compensatory mitigation shall address the <br />functions affected by the proposed project, with an intention to achieve functional equivalency or <br />improvement of functions. The goal shall be for the compensatory mitigation to provide similar wetland <br />functions as those lost, except when either: <br />1. The lost wetland provides minimal functions, and the proposed compensatory mitigation <br />action(s) will provide equal or greater functions or will provide functions shown to be limited <br />within a watershed through an existing watershed plan or a local or regional study that <br />characterizes watershed processes; or