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6. Voluntary native revegetation and/or removal of invasive species that does <br />not include use of heavy equipment. The use of herbicide by a licensed contractor with <br />certification as needed from the Washington Department of Ecology and the Washington <br />Department of Agriculture is permitted but requires notification prior to application to the <br />City and shall comply with TMC Section 18.45.158.E.3 <br />B. Permitted Activities Subject to Administrative Review. The following uses <br />may be permitted only after administrative review and approval of a Type 2 Special <br />Permission application by the Director: <br />1. Maintenance and repair of existing uses and facilities where alteration or <br />additional fill materials will be placed or heavy construction equipment used in the critical <br />area or buffer. <br />2. New surface water discharges to critical areas or their buffers from detention <br />facilities, pre -settlement ponds or other surface water management structures may be <br />allowed provided that the discharge meets the clean water standards of RCW 90.48 and <br />WAC 173-200 and 173-201A as amended, and does not adversely affect wetland <br />hydrology or watercourse flow. Water quality monitoring may be required as a condition <br />of use. <br />3. Construction of bioswales and <br />facilities allowed in wetland or watercourE <br />required as a condition of use. <br />dispersion trenches are the only stormwater <br />buffers. Water quality monitoring may be <br />4. Enhancement or other mitigation including landscaping with native plants <br />that requires heavy equipment. <br />5. Construction or maintenance of essential utilities if designed to protect the <br />critical area and its buffer against erosion, uncontrolled storm water, restriction of <br />groundwater movement, slides, pollution, habitat disturbance, any loss of flood carrying <br />capacity and storage capacity, and excavation or fill detrimental to the environment. <br />6. Construction or maintenance of essential public streets, roads and rights -of - <br />way as defined by TMC Section 18.06.285, provided the following criteria are met: <br />a. Are designed and maintained to prevent erosion and avoid restricting <br />the natural movement of groundwater. <br />b. Are located to conform to the topography so that minimum alteration of <br />natural conditions is necessary. The number of crossings shall be limited to those <br />necessary to provide essential access. <br />c. Are constructed in a way that does not adversely affect the hydrologic <br />quality of the wetland or watercourse and/or its buffer. Where feasible, crossings must <br />allow for combination with other essential utilities. <br />7. Public/Private Use and Access, <br />a. Public and private access shall be limited to trails, boardwalks, covered <br />or uncovered viewing and seating areas, footbridges only if necessary for access to other <br />areas of the property, and displays (such as interpretive signage or kiosks), and must be <br />located in areas that have the lowest sensitivity to human disturbance or alteration. <br />w:\Legislative Development\Critical Areas update 2-25-20 <br />MD:bjs Review and analysis by Barbara Saxton Page 15 of 87 <br />