2016 025 Ordinance - Laserfiche WebLink

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CHAGRIN +~ RIVER `~'3 WATERSHED `/~7 PARTNERS 141ay 2016 Placing silt fence in a parallel series does not extend the size of the permissible drainage area. Table 3: Maximum Draina a Area to Silt Fence Based on Slo e Maximum Drainage Area (acres) to 100 linear feet of silt fence Range of slope for a drainage area (%) Q.5 <2% 0.25 > 2% but < 20% 0.125 > 20% but < 50% (4) Alternative perimeter controls for sheet flow discharges may be considered by the Village of Mayfield, but their use shall not exceed the limitations indicated in Table 3 above. Detail drawings and plan notes shall specify the diameter of filter socks, compost berms and other such alternative perimeter controls if used instead of silt fence. (5) Stormwater diversion practices shall be used to keep runoff away from disturbed areas and steep slopes. Such devices, which include swales, dikes or berms, may receive storm water runoff from areas up to 10 acres. (6) Inlet protection. Erosion and sediment control practices, such as boxed inlet protection, shall be installed to minimize sediment-laden water entering active storm drain systems. All inlets receiving runoff from drainage areas of one or more acres will require a sediment settling pond. Straw or hay bales and filter socks around catch basins are not acceptable forms of inlet protection. (7) Off-site tracking of sediment and dust control. Best management practices must be implemented to ensure sediment is not tracked off-site and that dust is controlled. These best management practices must include, but are not limited to, the following: A. Construction entrances shall be built and shall serve as the only permitted points of ingress and egress to the development area. These entrances shall be built of a stabilized pad of aggregate stone or recycled concrete or cement sized greater than 2" in diameter, placed over a geotextile fabric, and constructed in conformance with specifications in the most recent edition of Rainwater and Land Development. B. Streets and catch basins adjacent to construction entrances shall be kept free of sediment tracked off site. Streets directly adjacent to construction entrances and receiving traffic from the development area, shall be cleaned daily to remove sediment tracked off-site. If applicable, the catch basins on these streets nearest to the construction entrances shall also be cleaned weekly and protected from sediment-laden runoff, if feasible without posing a public safety hazard. Based on site conditions, the Village Engineer and/or the Cuyahoga County SWCD may require additional best management practices to control off site tracking and dust. These additional BMPs may include: 18