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<br /> <br />July 1996 CYVCC -Sediment Yield Demonsyan'on Rev.2 - Block C • 7 <br />The CP factor for Block C was adjusted to account for surface roughness. As shown at the bottom of <br />Table S.A.2 found in Applied Hydrology and Sedimentology for Disturbed Areas (1981), the following <br />multiplier should be used to account for surface roughness: <br />Very Rough .40 <br />Moderate .65 <br />Minor .90 <br />Given the seedbed preparation methods used in reclamation, existing surface roughness for Black C falls <br />between very rough and moderate therefore, we used a multiplier of 0.50. <br />Sediment Specific Gravity. The specific gravity ofsandy-loam is approximately 2.63. <br />C:WSIBLt'!J!/LYFEV <br />o~i:.va 3~~rvTW TerraAlahic lne • /65 South Union Boulevard Save 460 • Lakeh•nod, Colorado 80228 • (303) 763-5110 <br />