Ordinance 2909-06 - Laserfiche WebLink

b. Weed removal. The removal of the following invasive, non-native and noxious weeds in conjunction with a mitigation plan or buffer management plan approved by the director, including revegetation with native plants. The director may require that only hand tools or light equipment be used for removal. i. Invasive and noxious weeds identified in a list adopted by the city or county; ii. English Ivy (Hedera helix); iii. Himalayan blackberry (Rubus discolor, R. procerus) and evergreen blackberry (Rubus laciniatus); iv. Scot's broom (Cytisus scoparius). 4. Public and Private Pedestrian Paths and Trails. Public and private pedestrian trails, including interpretive signage, overlooks, and benches may be permitted subject to the following _criteria and subject to approval by the director: a. The trail or path is designed to minimize impacts to the critical area and its buffer. The trail is located on the outer edge of the buffer, except for areas which provide for public viewpoints or educational opportunities and which are designed to minimize the footprint of the trail/path within the critical area or its buffer. Trails and paths shall not be permitted when critical area functions will be substantially degraded. b. The trail surface meets all other requirements including all applicable water quality standards. Use of pervious surfaces are encouraged. c. Critical area and buffer widths shall be increased where possible, equal to the width of the trail corridor, including disturbed areas. d. Trails proposed to be located in landslide or erosion hazard areas shall be constructed in a manner that does not increase the risk of landslide or erosion and in accordance with an approved geotechnical report. e. Public and quasi -public trails shall include interpretive signs identifying the critical area and buffer specific to the site. Stormwater facilities are allowed in stream and wetland buffers subject to all of the following criteria. a. Stormwater management facilities are permitted only within the outer twenty-five percent (25%) of the buffer. b. The subject buffer area has been previously substantially and legally altered and is unvegetated, sparsely vegetated, and/or vegetated with nonnative or invasive species. c. Stormwater facilities shall be integrated into the stream or wetland buffer as a natural drainage system. The slopes and all areas that are disturbed shall be planted with native vegetation consistent with a buffer enhancement/mitigation plan. Above ground concrete walls and structures are not permitted. Below grade structures may be permitted only if it can be shown to the satisfaction of the planning director that the use of such materials fits with the natural design of the proposed facility and does not interfere with wildlife passage or adversely impact biological functions of the buffer or the adjacent critical area. d. The location of a maintenance/access road is limited to the upland side of the facility outside the buffer. 13