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<br />FLOOD HYDROLOGY DESIGN CALCULATIONS <br />Preface <br />~~ <br />Matthew S. Snkurada <br />• <br />in 1978, Colorado Westmoreland commissioned a study of the flood potential <br />within [he Orchard Valley Mine Site. The calculations of that study follow, The <br />s[ndv was performed for the drainage patterns a[ that time. A few modifications <br />were subsequently made to [he drainage plan and [hey are revised within [his ap- <br />plication. <br />u <br />