28-14 Amend Chp. 1339 Storm Water Mgmt

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This does not preclude the use of other sediment barriers designed to con- trol sheet flow runoff. The total runoff flow treated by a sediment barrier shall not exceed the design capacity for that sediment barrier. Straw bale barriers are not acceptable. (d) Storm Water Diversion Practices: Storm water diversion practices shall be used to keep runoff away from disturbed areas and steep slopes where prac- ticable. Such practices, which include swales, dikes or berms, pipe slope drains and diversions, may receive storm water runoff from areas up to 10 acres. Storm water diversion practices alone are not considered a sediment control practice unless those are used in conjunction with a sediment set- tling pond. (e) All sediment control practices must be capable of pending runoff in order to be considered functional. (f) Clearing and grubbing will be done in two or more phases. The first phase will include only those locations necessary to install the perimeter soil ero- sion, sediment and storm water control ENIPs. After the perimeter controls are in place and functioning, the remaining phase(s) of clearing and grub- bing may continue. (g) Timing of sediment trapping practices: Sediment control practices shall be functional throughout all phases of up slope earth disturbing activity. Set- tling facilities, perimeter controls and other practices intended to trap sedi- ment shall be implemented prior to grading and within seven days from the start of grubbing. They shall continue to function until the up slope devel- opment area is permanently re- stabilized. As construction progresses and the topography is altered, appropriate controls must be constructed or exist- ing controls altered to address the changing drainage patterns. (h) Stabilization of Denuded Areas: Disturbed areas must be stabilized as speci- fied in the tables below, or according to the Ohio EPA NPDES storm water permit rules, whichever is most restrictive: Table 2: Permanent Stabilization Area requiring permanent stabilization Time frame to apply erosion tion controls Any areas that will lie dormant for one year or Within seven days of the most more recent disturbance Any areas within 50 feet of a stream and at Within two days of reaching final grade final grade Any other areas at final grade Within seven days of reaching foal grade within that area Table 3: Temporary Stabilization Area requiring temporary stabiliza- Time frame to apply erosion con - tion trols Any disturbed areas within 50 feet of a Within two days of the most recent stream and not at final ade disturbance if the area will remain idle 42