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7. The plan states that approximately 2,000 cubic yards of host rock will be brought to the surface and used to <br />buttress the toe of the hill slope on the west side of the affected area. Please explain the reason(s) for <br />modifying an existing hill slope. What is the proposed angle of reclaimed slope gradient? Please also state <br />whether the host rock in its final configuration against the toe of the slope will partly or fully cover a <br />segment of the roadway along the hill. <br />8. Host rock s proposed to be brought out of the mine and permanently emplaced against a hill slope (as <br />mentioned in the paragraph above). The plan is to only use "clean" non-mineralized rock, to which this <br />office agrees is a necessary condition. Please describe the method(s) to be used to ensure that only non- <br />mineralized materials can be used. <br />9. There is an historic discharge from the existing portal, which is conveyed out of the mine through a buried <br />pipe to the pond. Please describe where the underground mine water originates. Does any of it originate in <br />an ore or mineralized zone? How will the underground prospecting activities, within existing workings and <br />with known groundwater, be carried out so as to not degrade water quality? <br />10. Advancing the underground workings through new tunnels or underground drilling may intercept <br />groundwater, in addition to the groundwater that presently discharges. Any additional groundwater will be <br />of as-yet unknown quality and quantity. Please understand that this office cannot approve a plan within a <br />prospecting notice if it is anticipated that groundwater resources could be intercepted or degraded. <br />11. The original NOI packet did not include a bond, which -is a deficiency, but no bond is required at this time. <br />The Division will calculate a bond amount during the review period and notify you as to the amount that is <br />required to be posted. Please be reminded that no prospecting activity may commence before the bond is <br />accepted by the Division. <br />These are the completeness and deficiency questions and issues that the Division has identified at this time. If further <br />questions arise, this office will notify you. <br />The NOI file number shown above has been assigned to this project; please ensure that it appears on all <br />correspondence. The Division must receive a response to all items listed above, within 60 days of the date of this <br />letter, or the NOI may be denied. Please ensure that you mail two complete sets of all response materials, which may <br />be sent directly to me at the Durango address below. <br />If you have questions you may reach me at the Division's Durango Field Office: 691 CR 233, Room A-2, Durango, <br />CO 81301; telephone: 970-247-5193. <br />Sincerely, <br />.P,(, 0"'k <br />Bob Oswald <br />Environmental Protection Specialist <br />Ec: Steve Shuey, DRMS Grand Junction <br />Cc: Lawrence J. O'Connor, St. Sophia Holding Ltd., 10220 Hawkeye Circle, Reno, NV 89523 <br />(cA11-04 docsVower mtn top not incompl/rco)