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material shall be placed as not to tear or puncture the geote:ttile fabric. <br />The riprap need not be omcgacted, but shall be placed to grade in a mariner <br />to ensure that larger rock fragments are uniformly distributed. The <br />smaller rock fragments shall fill the spaces between the larger rock <br />fragments in such a manner as will result in a well-keyed, densely packed, <br />uniform layer of riprap of the required thickness. A certified as-built <br />plan will be submitted after c~ipletion of the remedial work. <br />The spillway outflow channel shall be undercut to adequate depth to allow <br />placement of geotextile fabric and riprap aryl maintain a well defined <br />channel. <br />Selected References <br />Barfield, B.J., Warner, R.C., and Haan, C.T. 1983. Applied Hydrology and <br />Sedimentology for Disturbed Areas. Oklahoma Technical Press, <br />Stillwater, Oklahoma. <br />Dodson & Associates, Inc., Houston, Texas. 1986. "Pipe Culvert and <br />Trapezoidal Channel Analysis". User Manual and Program Reference. <br />McKool, D.K., Bra~m, L.C., Foster, G.R., Mutrhler, C.K., and L.D. Meyer. <br />1987. "Revised Slope Steepness Factor for the Universal Soil Loss <br />Dquation". ASAE - Soil and Water Division (approved for publication - <br />June. 19871. <br />NOAA Precipitation Frequency Atlas of the Western States. Volume II. <br />Colorado, 1973. <br />Renard, K.G. 1987. Principles of Soil I;Yosion Control: Rangelands. <br />USDA-ARS, Tucson, Arizona. <br />Schwab, P.J., and R.C. Warner. 1988. "SFDCAD - Sediment, Erosion, <br />Dis~~arge by Oomputer Aided Design: User's Manual". Civil Software <br />Design, Lexington, Kentucky. 240 p. <br /> <br />7-6f-18 Revised 08/21/91 <br />