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To the beat of my knowledge end belief, field adjustments made during construction to the • <br />structure are in conformance with the Rules end Regulations in the intent of the approved <br />design plans and specifications (see Exhibit 13-7A). <br />~ ~ o ar~~ <br />• <br />O~~PpO REg~fi~ <br />.~~o~••~~,~cfy9~~~°~/ /~ O JUL 0 9 1992 <br />Date <br />Conclusion <br />Sedimentation Pond 009 does meet or exceed the design end performance requirements of the <br />CMLRD's regulations. Peabody will inspect the pond qusrterly to evaluate structural <br />integrity, storage cepscity conditions, and remedial work requirements in accordance with <br />the approved mine permit. Therefore, pursuant to Rule 4.05.6(7), the above is • <br />Sedimentation Pond 009 ea-built cer[if icstion report. <br />Selected References <br />Barfield, B.J., Verner, R.C., end Naen, C.T. 1983. Applied Hydrology end Sedimentology <br />for Disturbed Areas. Oklahoma Technical Press, Stillwater, Oklahoma. <br />Dodson 8 Associates, Ina., Houston, Texas. 1986. "Pipe Culvert end Trapezoidal Channel <br />Analysis". User's Manual end Program Reference- <br />McKOOI, D.K., Brown, L.C., Foster, G.R., Mutehler, C.K., and L.D. Meyer. 1987. "Revised <br />Slope Steepness Factor for the Universal Soil Loss Equation". ASAE - Soil and Vater <br />Division (eooroved for publication - June, 1987]. <br />NOAA Precipitation Frequency Atlas of the Veatern States. Volume II. Colorado, 1973, <br />Renard, K.G. 1987. Principles of Soil Erosion Control: Rangelands. USDA-ARS, Tucson, <br />Arizona. <br />Simonton, J.R. 1987. Soil Loss Equation Using the Universal Soil Loss Equation, Revised <br />LISLE for Rangeland, Version 8.17. USDA-ARS, Tucson, Arizona. <br />Simons, Li and Associates, Ina, 1983. Design of Sediment Control Measures for Smell • <br />Areas in Su rf ate Coal Nining. Fort Collins, Colorado. <br />13-SA-12 <br />