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effluent may noc meet the desired effluent standard and suggests increasing the stage of the <br />principal spillway. This caution message assumes that sediment will be resuspended as a result <br />• of head pressures and discharge velocities at the peak stage of the sediment pond during the <br />design storm event. The SEDCAD+ Users Manual (1987, pg 14-6) indicates that for passive <br />dewatering systems (i.e. perforated risers) using less than 3 to 4 inch diameter orifices and for <br />principal spillways noc larger than 24 inches, this caution message can be ignored. <br />5.0 REFERENCES <br />Barfield, Warner, & Haan (1981). "Applied Hydrology and Sedimentology for Disturbed Areas". <br />Oklahoma Technical Press, Stillwater, OK. <br />Renard, K.G., G.R. Foster, G.A. Weenies, D.K. McCool, and D.C. Yoder (1996). "Predicting <br />Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal <br />Soil Loss Equation (RUBLE)". Agricultural Handbook No. 703. U.S. Department of <br />Agriculture. Washington, DC. <br />Schwab and Warner (1987). "SEDCAD+ Users Manual". Civil Softwaze Design. Lexington, KY. <br />Soil Conservation Service (1986). "Urban Hydrology for Small Watersheds ('IR-SSJ". Soil <br />Conservation Service. Washington, DC. <br />G <br />• <br />6 <br />nesiH,.,n,d,.ea <br />n/V/9~~NPM REVISED 11!98 <br />