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Erosion Control <br />As shown in figures Exhibit G-2 and G-3, the material a short <br />distance below the surface of the stream channel is a compotent <br />granite bedrock (ENTECH, 19881. This material is not expected to <br />be highly erodible. Evidence of this low erodiblity is shown in <br />the existing condition which has a reclaimed channel in the the <br />East tributary consisting of weathered granite over the granite <br />bedrock. Ten years or more of functioning shows very little <br />erosion on a five percent stream slope. Tht reelai~natfan <br />channels will terminate et the edge of the pit where the existing <br />,~ channel will cascade over a bunch oaction as shown in Detail A of <br />Exhibit F (included in the original permit applicatioal. A <br />"plungo pool." frill be ineludsd at tbo bottoms of eavb bor-oh which. <br />averages eight feet deep and the bench has a total w}dth of 5©• <br />fit. This snorgy disaipatien conf}garetioe n}lZ pre~eret the ~ x <br />headward migratioe of cHannal erociw+ that will be ~e}a}w~el ~"~ .r `• ' <br />throughout the •lopsd sections of the reolaneatiea chenws•1 giYan.... } ~G <br />the erosion-rocistaat natuso of the bedrock. <br />Surface Water Responses: Summit Pit Application page 9 <br />