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CITY OF EVERETT STORMWATER MANAGEMENT MANUAL Maintenance Standards 1. Inspect the area frequently to make sure flagging remains in place and the area remains undisturbed. 3.2.3 BMP C103: High Visibility Plastic Fence 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 or roads; and (4) protect areas where marking with survey tape may not provide adequate protection. Conditions of Use To establish clearing limits plastic 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 4 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 6 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 sagging between posts. The fence color shall be high visibility orange. The fence tensile strength shall be 360 pounds/feet using the American Society for Testing and Materials (ASTM) D4595 testing method. 2. Fences shall not be wired or stapled to trees. Maintenance Standards 1. If the fence has been damaged or visibility reduced, it shall be repaired or replaced immediately and visibility restored. 3.2.4 BMP C105: Stabilized Construction Entrance Purpose Construction entrances are stabilized to reduce the amount of sediment transported onto paved roads by vehicles or equipment by constructing a stabilized pad of quarry spalls at entrances to construction sites. Conditions of Use Construction entrances shall be stabilized wherever traffic will be leaving a construction site and traveling on paved roads or other paved areas within 1,000 feet of the site. On large commercial, highway, and road projects, the designer should include enough extra materials in the contract to allow for additional stabilized entrances not shown in the initial C-SWPPP. It is difficult to determine exactly where access to these projects will take place; additional materials will enable the contractor to install them where needed. Volume 11— Construction Stormwater Pollution Prevention 3-4