5.3. PCSR 04-10-2007 - Laserfiche WebLink

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Best management practices as defined by the MPCA, requirements of the NPDES Construction permit shall apply in the subdivision and development of land areas including construction sites permitted through grading permits or building permits. Storm Water Pollution Prevention Plan (SWPPP) A. A Storm Water Pollution Prevention Plan (SWPPP) is required for all construction sites with a disturbed area greater than or equal to twenty thousand (20,000) square feet. The SWPPP must be submitted for review and approved prior to any land disturbing activities. The SWPPP will designate the temporary and permanent erosion control measures to be incorporated in the site development. The SWPPP must meet the requirements described in the MPCA NPDES construction permit, PART III as well as the required contents and format of the SWPPP described in the City of Elk River Engineering Design Guidelines. B. Sites with less than twenty thousand (20,000) square feet of disturbed area are required to meet the provisions of the MPCA NPDES construction site permit PART IV related to erosion and sediment control. This requirement applies to construction sites permitted by a building and or grading permit issued by the City of Elk River. C. Construction sites must have perimeter best management practices and construction site entrances installed and inspected before the City of Elk River will issue a permit for building. D. Frozen Ground Conditions do not exempt a site from complying with the requirements of this Chapter. At the applicant's request alternative perimeter controls may be implemented in place of the required silt fence installation. A "Frozen Ground Agreement" must be completed, signed and submitted. E. The following guidelines shall be applied at the city's discretion: (1) The development shall conform to the topography and soils so as to create the least potential for soil erosion. (2) Erosion and sediment control measures shall be coordinated with the different stages of development. Appropriate control measures shall be installed prior to development when necessary to control erosion. (3) The smallest practical increment of land shall be exposed at any one time during development. (4) When soil is exposed, the exposure shall be for the shortest feasible period of time, (5) Where the topsoil is removed, sufficient arable soil shall be set aside for respreading over the developed area. The soil shall be restored to a depth of four inches and shall be of a quality at least equal to the soil quality prior to development. (6) Critical erosion areas exposed during construction shall be protected with temporary vegetation, mulching or other acceptable means. (7) Sediment basins (debris basins, silting basins, or silt traps) shall be installed and maintained to remove sediment from runoff waters from land subject to earth disturbance activities. 10