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r <br /> chapter -Best WaIna "emerit Practices for Erosion: and. Sediment Control: . <br /> r g , The effectiveness of the barrier can' be increased by installing two parallel curtains, <br /> separated at regular intervals by 101 (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 /> r 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 /> r the curtain from the water. <br /> r Maintenance <br /> 1 . The developerlowner 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; manufacturer's 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 be taken to an upland area and stabilized . <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r 4-123 <br />