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<br />8. To characterize the estimated 32 million tons of waste rock expected to <br />be generated from the open pit areas, eight waste rock samples analyses <br />were submitted for review. Please describe how this sample set <br />adequately characterizes site conditions, given the amount and variety of <br />waste rock to be generated on site. <br />9. The results from the humidity-cell test of the interburden indicate <br />sulfate concentrations to vary significantly from week to week. Please <br />discuss why this occurs. Please describe why the cumulative sulfate data <br />reported does not appear to be additive throughout the test period? <br />10. The individual tests performed on the interburden, overburden, and waste <br />rock along the fault zone indicate that the interburden has a slight <br />potential for acid production. If these materials are handled <br />separately, please describe what mitigation is proposed to ensure that <br />the interburden will not be acid-forming. If the waste material is <br />combined during disposal, describe the projected composite effect for <br />acid-production potential. <br />Section D.3.4 Facility Construction <br />Section D.3.4.1 General <br />11. Please specify the methods and disposal locations for vegetation removal <br />planned for the various facility locations. <br />12. Please specify the depth of topsoil and subsoil removal proposed for each <br />of the facility locations. <br />13. Please estimate the anticipated amount of material (combined ore and <br />waste) to be removed from the east pit. <br />Section D.5 Mill Facilities <br />14. Please specify mill facility design specifications (flooring naterials, <br />sump locations, material and height of knee walls, etc.) so teat <br />containment and or recovery of spilled or overflowed milling reagents, <br />both in the reagent storage area and in the flotation, recirculation, and <br />processing areas is assured. <br />15. Pregnant solutions from the leach pad pumped to the mill for processing <br />will require transmittal through a system that provides seconiary <br />containment of solutions in the event of pipe failure, leaks, or damage. <br />This may include double piping or pipes laid on an HDPE liner. Please <br />commit to such. <br />16. What percentage of the tailing will be processed in the carbo rin-leach <br />circuit? Please provide the textural analysis of the material processed <br />through the carbon-in-leach circuit. <br />17. Will the flotation system also use cyanide as part of its pro~:essing <br />prior to disposal as tailing? <br />-3- <br />