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<br />Ond}e the drainageway has reached its final shape and grade through Trapper's <br />recdnstruction efforts, application of erosion control practices and materials <br />will ke applied where appropriate. Application of treatments will occur not <br />later than the year following completion of all mining and regrading within a <br />drainage basin. However, applications will most likely occur sooner. <br />It would be impractical to attempt to list every type of product or technique <br />which may be used to stabilize draina¢eways~ particularly since improved products <br />and techniques are constantly being developed. However, the following are possi- <br />bilities: landglas, straw bales, brush, and macs. If Trapper plans to use any of <br />the Following, the Division's approval will be obtained prior to use or <br />installation. <br />° Drop structures <br />° Rip rap <br />° Channel liners which are impervious <br />However, Trapper does not expect to use the same treatments throughout the length <br />or reach of a drainageway. Since [he overall goal is to establish a defined but <br />stable drainageway, treatment applications will be site-specific. For example, <br />in the lower reaches of the main channel where flows are the greatest, it may be <br />necessary to use extensive and numerous combinations of materials and methods to <br />obtain temporary stability while perennial vegetation becomes established. How- <br />ever, in the highest reaches of the drainageway where flows are low, little or no <br />treatment may be necessary to achieve vegetation establishment. <br /> <br />~I~~~ <br />~~~i ~b~ <br />4-183a <br />