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1k1N1DAD EAS1N MINING, INIT. <br />SEDIMENT FOND CERTIFICATION kEF'OkT <br />~. Sediment Fond: 15-F8 <br />A> Comments: <br />This pond was originally constructed prior to September, <br />1984 by mine personnel but was never completed. Work in <br />April, 1985 for certification included dam completion, <br />spillway construction, dewatering pipe and cap with <br />opening. <br />b) Design basis for Certification: <br />Technical revision by American Engineers, Inc. dated May <br />3i~, 1984. <br />C) Constructed Elevations: <br />The elevations listed below were checkeG witi~ a precision <br />level and stadia rod: <br />Dewatering F'ipe Inlet <br />Dewatering Fipe Outlet <br />Top of Dam <br />bottom of Spillway <br />Toe of Dam <br />Eottom of Fond <br />All elevations were found to be within 0.25 feet of the <br />design. <br />D) bottom Width of Spillway <br />Design: 3U.0 feet <br />Measured: 30.U feet. <br />E) Riprap kequirements: <br />Design: In spillway channel. <br />pleasured: As designed. <br />F) Slope of Dam: <br />Design: 2.0 H l.i~ V ma>:. <br />Measured: 2.6 H 1.0 V <br />4 <br />