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p ,` ... <br />S:3CTION NARRATIVE AND REFERENCES <br />NOTE: <br />This section is composed of <br />runoff and ditch capacity <br />sedimantat:ion control structur <br />This reference material is to <br />2..05.3 of the permit and in <br />9 (A&B) anti 13 (A,B, ~ C). <br />design criteria, area <br />calculations of the <br />es at the Allen Mine. <br />be used with section <br />conjunction with maps <br />As a point of clarification, ponds 004, 005, 006, and <br />007 were named in reference to their NPDES permit <br />numbers for consistancy. At the Allen Mine there are <br />C no ponds 001, 002, or 003. Labels 001, 002, and 003 <br />refer to water discharge points from sources other than <br />storm runoff. <br />REFERENCE: <br />Climatelogi.cal Data from: <br />Technical Paper No. 40 Rainfall Frequency <br />Atlas of the United States U.S. Department of <br />Commerce, 4leather Bureau, 1~~61) <br />Soil and Water Conservation Planning, Ciruela <br />Canyon_ U.S. Department o Agriculture, Soil <br />Conservation Service, 1976) <br />Hydrology from: <br />Hydrology and Sedimentology of Surface Mined <br />Lands (G.T. Haan & B.J. Barfield, 1978) <br />Handbook of Steel Drainage & Highway <br />Construction Products (American Iron and Steel <br />Institute, 1q'1) <br />2 <br />