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SCS Table <br />Tabie 8.8 Selected USLE C Values for Construction, Mining, <br />and Forest Lands. <br />Condition C factor References Condition C factor References <br />1. Bare soil conditions <br />S. Undisturbed forest <br />Undisturbed except scraped <br />0.66 -1.30 <br />° <br />100 -73% canopy, 100 SKI% litter <br />0.0001 -0.001 <br />Compacted <br />35-20% canopy. 70-40% litter <br />0.003-0.009 <br />e <br />Smooth <br />1.00 -1.40 <br />°A <br />6. Permanent pasture and brush cover <br />Root raked <br />0.90 -1.20 <br />° <br />0% canopy. 80% ground cover <br />Dist tillage <br />Crass <br />0.013 <br />Fresh <br />1.00 <br />• <br />Weeds <br />0.043 <br />After one rain <br />0.89 <br />° <br />5096 Brush, 80% ground cover <br />2. Mulch <br />Grass <br />0.012 <br />Straw <br />7. Mechanically prepared woodland sites <br />03 tons/ac <br />0.30 <br />Burned, 10% cover at ground <br />IA tons/ac <br />0.18 <br />°d <br />Good soil <br />0.240 <br />2.0 twWw <br />0.09 <br />°d <br />Poor soil <br />0.360 <br />0 <br />4.0 tonafac <br />0.02 <br />'d <br />Burned, 0% cover at ground <br />Wood chips <br />Good soil <br />0.260 <br />03 tons/ac <br />0.90 <br />°d <br />Poor soil <br />0.450 <br />2.0 tonstac <br />0.70 <br />°d <br />Disked, 0% cover at ground <br />4.0 torshc <br />0.42 <br />°d <br />Good soil <br />0.720 <br />° <br />6.0 towac <br />0.22 <br />°d <br />Poor soil <br />0.940 <br />3. Chemical binders <br />Asphalt emulsion, 605 gaVac <br />0.14-0.52 <br />° <br />Aquatun.'IM &4wk <br />0.67 <br />a <br />4. Secdinp <br />No prepared seedbed <br />Now pig <br />0.64 <br />° <br />Prepared days <br />Prepared <br />0.34 <br />• <br />seedbed <br />New planting <br />0.40 <br />° <br />After 60 days <br />0.05' <br />• <br />Note. Additional values are given in Appendix 8B. <br />ghnsportatior Research Board (1980). <br />aBofteld et al. (1988). <br />'Whachrneier and Smith (1978). <br />4Aga et al. (1972). C factors for mulch vary depending on slope length and steepness. Slope length limits apply (see Appendix 8B. Table 883) <br />REVISED AUGUST 2009 Attachment 2.05.3(3) -14 -8 <br />