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<br /> <br />80 <br />13. 7'lie channel lining proposed for permanent and restoration channels is <br />riprao. Because of the steep slopes and associated high velocities, <br />it is important that care be taken in construction to properly place <br />the ziprap; gravel filter and liners were recommended. If not in- <br />stalled carefully, the channels will experience significant damage. <br />14. Because of the significant amount of riprap required for restoration, <br />the, natural armor layer and boulders in the drainage channels should <br />be kept separated for use during reclamation. <br /> <br />