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Chapter 4 - Best Management Practices for Erosion and Sediment Control <br /> 6 . The effectiveness of the barrier can be increased by installing two parallel curtains , <br /> separated at regular intervals by 10' (3 m) long wooden boards or lengths of pipe . <br /> Removal <br /> 1 . Care should be taken to protect the skirt from damage as the turbidity curtain is <br /> dragged from the water. <br /> 2 . The site selected to bring the curtain ashore should be free of sharp rocks , broken <br /> cement , debris , etc. so as to minimize damage when hauling the curtain over the <br /> area . <br /> 3 . If the curtain has a deep skirt, it can be further protected by running a small boat <br /> along its length with a crew installing furling lines before attempting to remove <br /> the curtain from the water. <br /> Maintenance <br /> 1 . The developer/owner shall be responsible for maintenance of the filter curtain for <br /> the duration of the project to ensure the continuous protection of the watercourse . <br /> 2 . Should repairs to the geotextile fabric become necessary, there are normally repair <br /> kits available from the manufacturers; manufacturers instructions must be followed <br /> to ensure the adequacy of the repair. <br /> 3 . When the curtain is no longer required as determined by the inspector, the curtain <br /> and related components shall be removed in such a manner as to minimize turbidity. <br /> Sediment shall be removed and the original depth (or plan elevation) restored <br /> before removing the curtain . Remaining sediment shall be sufficiently settled before <br /> removing the curtain . Any spoils must betaken to an upland area and stabilized . <br /> i <br /> i <br /> r <br /> s <br /> 4-123 <br />