2000-01-06_AgendaPacket - Laserfiche WebLink

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construction activity begins. Such structures may be adjusted during dry weather to accommodate short term activities, such as those that require very large vehicles. As soon as this activity is finished or before rainfall, the erosion and sediment control structures must be returned to the configuration specified by the city. A sediment control inspection must then be scheduled, and passed before a footing inspection will be done. C.) Diversion of channeled runoff around disturbed areas, if practical, or the protection of the channel. D.) Easements. If a storm water management plan involves directing some or all runoff from the site, the applicant shall obtain from adjacent property owners any necessary easments or other property interests concerning the flowing of such water. E.) The scheduling of the site's activities to lessen their impact on erosion and sediment creation. F.) Minimize amount of exposed soil. G.) Control runoff as follows (1 and 2 or 1 and 3): Unless precluded by moderate or heavy snow cover (Mulching can take place if a light snow cover is present.), stabilize all exposed inactive disturbed soil areas within 100 feet of any water of the state, or any conveyance (curb, gutter, storm sewer inlet, drainage ditch, etc.) to a water of the state with sod, seed or mulch. This must be done, if the developer will not work the area for seven (7) days on slopes greater than three feet horizontal to one (1) foot vertical (3:1), fourteen (14) days on slopes ranging from 3 :1 to 10:1 and twenty-one (21) days for flatter slopes. 2.) For disturbed areas greater than five (5) acres construct temporary or permanent sedimentation basins. Sedimentation basins must have a minimum surface area equal to at least 1 % of the area draining to basin, three (3) foot minimum depth, and be constructed in accordance with accepted design specifications including access for operations and maintenance. Sedimentation basins must be maintained regularly including sediment removal to maintain a (three 3) foot depth. Basin discharge rates must also be controlled to prevent erosion in the discharge channel. a.) The applicant is required to obtain a National Pollutant Discharge Elimination System/State Disposal System (NPDES/SDS) construction storm water permit from the Minnesota Pollution Control Agency for any project that disturbs five (5) acres or more of land.) 3.) For disturbed areas less than five (5) acres sedimentation basins are encouraged, but not required, unless specifically required by the city engineer. The applicant shall install erosion and sediment controls at locations directed by the city. Minimum requirements include silt fences, rock check dams, or other equivalent control measures 10