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V design was submitted in 2008 by Smith William Consultants, Inc. This total report has 774 <br /> pages and includes evaluations of the geology, foundation engineering, filling of old <br /> underground workings, sampling and testing of materials, detailed designs for the slope stability, <br /> the liner system, pregnant solution storage area PSSA, the underdrain system, surface water <br /> hydrology and the final reclamation plans. <br /> Important information regarding the design parameters are given below, which have been <br /> extracted from the 2008 Phase V design done by Smith Williams Consultants, Inc.: <br /> 1.3 Design Criteria <br /> Smith Williams completed the engineering design for Phase 5 VLF using the following desist <br /> criteria: <br /> 1.3.1 Valley Leach Facility(VLF) <br /> Parameter Value <br /> Maximum are depth over liner 800 feet(Phase I through Phase IV) <br /> 590 feet(Phase 5) <br /> Nominal ore angle of repose slope 1.31-11:1V <br /> overall operational ore side slope against upsloping ground 1.61-11:1V <br /> Overall operational ore side slope against downsloping ground 2.5HAV <br /> Overall operational ore side slope above Phase 5 VLF PSSA embankment 2.0HAV <br /> Maximum lift height 100feet <br /> 1.3.3 Cresson Ore <br /> Parameter Value <br /> Average ore dry density 110 pcf <br /> wet are density(at field capacity moisture content) 118 pcf <br /> 1.3.4 Water Balance <br /> Anticipated Ore Production Rate Schedule <br /> (million tons/year) <br /> Year Phase I Phase IIAII Phase IV Phase 5 <br /> 2011 4.7 Mt 6.9 Mt 8.8 Mt 3.0 Mt <br /> 2012 3.4 Mt 0.5 Mt 0.5 Mt 20.4 Mt <br /> 2013 4.6 Mt -- 1.5 Mt 2.1 Mt 13.1 MI <br /> 2014 6 0 Mt 0.5 Mt 0.5 Mt 18.1 Mt <br /> 2015 5.2 Mt 0.5 Mt D 5 Mt 17.4 Mt <br /> 2016 5.7 Mt NIA NIA 15.6 Mt <br /> Notes: <br /> 1. Phase 5 will not begin solution application until 2011 and the approved Amendment No.8 water balance <br /> remains in effect until that time. <br /> 2. Annual ore production schedule subject to change. <br /> 34 <br />