2016-096 Ordinance - Laserfiche WebLink

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EXHIBIT B: NEW CHAPTER 927 Erosion and sediment controls shall be designed, installed and maintained effectively to minimize the discharge of pollutants during the course of earth disturbing activities. The controls shall include the following minimum components: (a) NON-STRUCTURAL PRESERVATION MEASURES: The SWP3 must make use of practices that preserve the existing natural condition to the maximum extent practicable. Such practices may include preserving riparian areas, preserving existing vegetation and vegetative buffer strips, phasing of construction operations in order to minimize the amount of disturbed land at any one time, minimizing disturbance of steep slopes, designation of tree preservation areas or other protective clearing or grubbing practices. Soil compaction shall be minimized and, unless infeasible, topsoil shall be preserved. Provide and maintain a 50 -foot buffer of undisturbed natural vegetation around surface waters of the state, or riparian or wetland setbacks, if applicable, whichever is greater, unless maintaining this buffer is infeasible (e.g., stream crossings for roads or utilities, or for channel and floodplain rehabilitation and restoration). Direct stormwater to vegetated areas to increase sediment removal and maximize stormwater infiltration. (b) EROSION CONTROL PRACTICES: The SWP3 must make use of erosion controls that are capable of providing cover over disturbed soils. The amount of soil exposed during construction activity shall be minimized. A description of control practices designed to restabilize disturbed areas after grading or construction shall be included in the SWP3. The SWP3 must provide specifications for stabilization of all disturbed areas of the site and provide guidance as to which method of stabilization will be employed for any time of the year. Such practices may include: temporary seeding, permanent seeding, mulching, matting, sod stabilization, vegetative buffer strips, phasing of construction operations, the use of construction entrances, and the use of alternative ground cover. Erosion control practices must meet the following requirements: (l) Stabilization. Disturbed areas must be stabilized as specified in Tables 1 and 2 below. Table 1: Permanent Stabilization Any area that will lie dormant for one year or Within 7 days of the most recent disturbance. iLmore. Any area within 50 feet of a surface water of Within 2 days of reaching final grade. the state and at final grade. Any other areas at final grade. — I Within 7 days of reaching final grade within that area. Table 2: Temporary Stabilization Any disturbed area within 50 feet of a surface Within 2 days of the most recent disturbance if water of the state and not at final grade. that area will remain idle for more than 14 days.