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Page 5 of 7 <br /> <br />4. Dewatering and Basin Draining <br />A. If water cannot be discharged into a sedimentation basin before entering a <br />surface water it must be treated with the appropriate BMPs, such that the <br />discharge does not adversely affect the receiving water or downstream <br />landowners. The Permittee must make sure discharge points are appropriately <br />protected from erosion and scour. The discharge must be dispersed over riprap, <br />sand bags, plastic sheeting or other acceptable energy dissipation measures. <br />Adequate sediment control measures are required for discharging water that <br />contains suspended soils. <br />B. All water from dewatering or basin draining must discharge in a manner that <br />does not cause nuisance conditions, erosion in receiving channels, on down <br />slope properties, or inundation in wetlands causing significant adverse impact to <br />wetlands. <br /> <br />5. Inspections and Maintenance <br />A. The Permittee shall be responsible for inspecting and maintenance of the BMPs <br />B. The Permittee must routinely inspect the construction project once every 7 days <br />during active construction and within 24 hours of a rainfall event of 0.5 inches <br />or greater in 24 hours. <br />C. All inspections and maintenance conducted during construction must be <br />recorded in writing and must be retained with the SWPPP. Records of each <br />inspection and maintenance activity shall include <br />a. Date and time of inspection. <br />b. Name of person(s) conducting the inspections. <br />c. Findings of inspections, including recommendations for corrective actions. <br />d. Corrective actions taken (including dates, times, and the party completing <br />the maintenance activities). <br />e. Date and amount of all rainfall events 0.5 inches or greater in 24 hours. <br />f. Documentation of changes made to SWPPP. <br />D. Parts of the construction site that have achieved final stabilization, but work <br />continues on other parts of the site, inspections of the stabilized areas can be <br />reduced to once a month. If work has been suspended due to frozen ground <br />conditions, the required inspections and maintenance must take place as soon as <br />runoff occurs or prior to resuming construction, which ever happens first. <br />E. All erosion and sediment BMPs shall be inspected to ensure integrity and <br />effectiveness. All nonfunctional BMPs shall be repaired, replaced or <br />supplemented with a functional BMP. The Permittee shall investigate and <br />comply with the following inspection and maintenance requirements. <br />a. All silt fences must be repaired, replaced, or supplemented when they <br />become nonfunctional or the sediment reaches 1/3 of the height of the <br />fence. These repairs shall be made within 24 hours of discovery, or as <br />soon as field conditions allow access. <br />b. Temporary and permanent sedimentation basins must be drained and the <br />sediment removed when the depth of sediment collected in the basin