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. . � r. <br /> jj�l (6) . <br /> Any soil or dirt storage piles containing more than ten cubic yards of matenal should not be <br /> located within 25 feet from a roadway or drainage channel. If remaining for more than 14 <br /> days, they shall be stabilized by mulching vegetative cover, tarps or other means and <br /> enclosed with down gradient perimeter sediment controls. Piles which will be in existence for <br /> less than 14 days shall be enclosed with perimeter sediment controls. <br /> ��) <br /> Pipe outlets must have energy dissipation installed within 24 hours of connection to waters of <br /> the state. <br /> (9) <br /> Inspections and maintenance. The owner shall be responsible for conducting inspections and <br /> maintenance of all erosion and sediment control BMPs on site. <br /> (1) <br /> Inspections, maintenance, and rainfall on site must be documented and readily available for <br /> review. Inspections are required as followed: <br /> a. <br /> Once every seven days on exposed soil areas. <br /> b. <br /> Within 24 hours after a one-half inch or greater rain event over 24 hours. <br /> c. <br /> Once every 30 days on stabilized areas. <br /> d. <br /> As soon as runoff occurs or prior to resuming construction on frozen ground. <br /> �2) <br /> Maintenance is required as follows: <br /> a. <br /> When sediment reaches 1/3 the height of the BMP on perimeter control devices, <br /> sediment must be removed within 24 hours of discovery. <br /> b. <br /> If the perimeter control device is not functional it must be repaired or replaced within <br /> 24 hours of discovery. <br /> c. <br /> Temporary sediment basins shall be maintained when sediment reaches '/z the outlet <br /> height or '/z the basin storage volume. Basins must be drained or sediment removed <br /> within 72 hours of discovery. <br /> d. <br /> Sediment must be removed from paved surfaces within 24 hours of discovery. <br /> (3) <br /> Erosion into streets, wetlands or water bodies. If eroded soils (including tracked soils from <br /> construction activities) enter or appear likely to enter streets, wetlands, or other water bodies, <br /> prevention strategies, cleanup and repair must be immediate with the appropriate approvals <br /> from the DNR, MPCA, or any other state, federal, or local agencies as necessary. The owner <br /> 13 <br /> i� <br />