7500 HARDESON RD 2021-06-09 - Laserfiche WebLink

1 ' damage from burying and smothering. . Vegetative buffer zones for streams, lakes or other waterways shall be established by the local permitting authority or other state or federal permits or approvals. Maintenance Standards ' Inspect the area frequently to make sure flagging remains in place and the area remains undisturbed. Replace all damaged flagging immediately. BMP 3: High VisibilityFence ' Purpose Fencing is intended to: ' 1. Restrict clearing to approved limits, 2. Prevent disturbance of sensitive areas, their buffers, and other areas required to be ' left undisturbed. 3. Limit construction traffic to designated construction entrances, exits, or internal ' roads. 4. Protect areas where marking with survey tape may not provide adequate pro- !' tection. Conditions of Use To establish clearing limits plastic,fabric, or metal fence may be used: . At the boundary of sensitive areas, their buffers, and other areas required to be left uncleared. • As necessary to control vehicle access to and on the site. ' Design and installation Specifications High visibility plastic fence shall be composed of a high-density polyethylene material ' and shall be at least four feet in height. Posts for the fencing shall be steel or wood and placed every 6 feet on center(maximum)or as needed to ensure rigidity. The fencing shall be fastened to the post every six inches with a polyethylene tie. On long continuous lengths of fencing, a tension wire or rope shall be used as a top stringer to prevent sag- ging between posts. The fence color shall be high visibility orange. The fence tensile strength shall be 360 lbs./ft. using the ASTM D4595 testing method. If appropriate install fabric silt fence in accordance with BMP C233: Silt Fence (p.367)to 1 act as high visibility fence. Silt fence shall be at least 3 feet high and must be highly vis- ible to meet the requirements of this BMP. 1 2014 Stormwater Management Manual for Western Washington Volume 11- Chapter 4 -Page 269