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<br />w <br />o <br />U1 <br />-.J <br /> <br />,.I.eclamati'Jn of land disturoea Oy ,,11 coal minin'J in tne future <br /> <br />~ill Ce ra~ulr~d t~ conform to regulations arising from the Surface- <br /> <br />r'linin':) Cuntrol and Reclamation Act of 1977 Puol ic Law ~5-87. <br /> <br />These <br /> <br />regulations require seuimentdtion ~ond5 to limit tne trdns~ort of <br /> <br />sediment resulting from mining into nearDy Streams. <br /> <br />Tnese <br /> <br />requirements will prObably reduce greatly. althougn not completely <br /> <br />el iminate. tne additional sediment loading of the stUdy reaches <br /> <br />due to the mining of coal. <br /> <br />Accordingly. it ~as assumed that <br /> <br />90 percent of the sediment resulting from coal mining ~oul~ De <br /> <br />controlled on site and tnat only 10 percent ~ould reacn the mainstem <br /> <br />study reaches. <br /> <br />Sediment eroded from land disturbed O{ population 9ro~th and <br /> <br />other indirect activities associated with coal minin~ is not SUbject <br /> <br />to any controls or regulations at this time. Furtnermore. these <br /> <br />sediment source areas are ~enerally relatively sma! 1 and widely <br /> <br />scattered. <br /> <br />Thus. the additional quantities of sediment erOded from <br /> <br />land disturt:ed by indIrect activities prooably cannot De control led <br /> <br />to any appreciable extent. <br /> <br />Therefore. it ...as assumed that all of <br /> <br />the sediment eroded from land d;sturoea DY pupulation jruwth ...ould <br /> <br />enter the mainstem StuOy reaches. <br /> <br />32 <br />