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• O�rono, MN Code of Ordinances Page 10 of 13 <br /> (f) Site erosion contro% <br /> (1) Channelized runoff from adjacent areas passing through the site shall be diverted <br /> around disturbed areas, if practical. Diverted runoff shall be conveyed in a manner that <br /> will not erode the conveyance at receiving channels. Ali temporary or permanent <br /> drainage channels must be stabilized within 24 hours of being connected to a water of <br /> the state. Sediment control is required along channel edges to reduce sediment reaching <br /> the channel. <br /> (2) All activities on the site shall be conducted in a logical sequence to minimize the area of <br /> bare soil exposed at any one time. <br /> (3) All disturbed ground left inactive for 14 or more days must have temporary or <br /> permanent stabilization year round. <br /> (4) For sites with more than ten acres disturbed at one time, or if a channel originates in the <br /> disturbed area, one or more temporary or permanent sedimentation basins shall be <br /> constructed. Each sedimentation basin shall have a surface area of at least one percent <br /> of the area draining to the basin and at least three feet of depth and constructed in <br /> accordance with accepted design specifications. Sediment shall be removed to maintain a <br /> depth of three feet. The basin discharge rate shall also be sufficiently low as to not cause <br /> erosion along the discharge channel or the receiving water. <br /> (5) Perimeter sediment control measures shall be placed along all down gradient perimeters <br /> of the site. If a channel or area of concentrated runoff passes through the site, perimeter <br /> sediment control measures shall be placed along the channel edges to reduce sediment <br /> reaching the channel. All down gradient perimeter sediment control measures must <br /> include a maintenance and inspection schedule. <br /> (6) Any soil or dirt storage piles containing more than ten cubic yards of material should not <br /> be located within 25 feet from a roadway or drainage channel. If remaining for more <br /> than 14 days, they shall be stabilized by mulching vegetative cover, tarps or other means <br /> and enclosed with down gradient perimeter sediment controls. Piles which will be in <br /> existence for less than 14 days shall be enclosed with perimeter sediment controls. <br /> (7) Pipe outlets must have energy dissipation installed within 24 hours of connection to <br /> waters of the state. <br /> (g) lnspections and maintenance. The owner shall be responsible for conducting inspections and <br /> maintenance of all erosion and sediment control BMPs on site. <br /> (1) Inspections, maintenance, and rainfall on site must be documented and readily available <br /> for review. Inspections are required as followed: <br /> about:blank 11/21/2016 <br />