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• SEDIMENT POND DESIGN - SP-1 <br />The sediment pond is designed to contain one year accumulation of <br />sediment using the Universal Soil Loss Equation (LISLE). The factors <br />used in calculating sediment yield come from Predicting_Rainfall <br />Erosion Losses, Agriculture Handbook Plumber 537, December 1978, and <br />-------------- <br />Applied Hydrology and Sedimentology, Barfield, Warner and Hoan, 1983. <br />Area 1 - Undisturbed Area Above Surface Facilities - 1.8 Acres <br />R = 26 <br />x = .3 <br />LS = 20 <br />CP = .42 Cover 258 permanent pasture <br />• A = (R) (K) (LS) (CP) <br />_ (26) (.3 ) (20) (.42) = 65.5 Tons/Acre/Year <br />(30.6)(1.8) = 118 tons/year <br />Area 2 - Disturbed Area - 4.9 acres <br />R = 26 <br />K = .14 <br />LS = 3.14 <br />CP = 1.0 <br />A = (R) (K) (LS) (CP} <br />_ (26)(.14)(3.14)(1.0) = 7.8 tons/acre/year <br />(7.6)(4.9) = 38 Tons/Year <br />. Disregarding any deposition occurring, total sediment yield for one <br />year is 156 tons/year. <br />