2013-10-08_REVISION - M2012032 (13)

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Greg Lewicki And Associates, PLLC 11541 Warrington Court Phone: (303) 346 -5196 Fax (303 )-346 -6934 Parker, CO USA 80138 E-Mail: info@lewicki.biz October 2, 2013 Bob Oswald Colorado Division of Reclamation, 691 CR 233, Suite A -2 Durango, CO 81301 Revenue Mine: TR -01 Submittal Mr. Oswald, Mining, and Safety �i Yh - Zn I -- S P h "Eck ers Pori S G- This letter and associated attachments is in response to the Silver Star Resources Revenue Mine Technical Revision -01 Adequacy Review Letter dated August 22, 2013. The adequacy response has resulted in changes to the following items: - Appendices 6, 12, 13 and 14 - Exhibit L -Maps C -2, C -3, C -4, F -1, G -1, G -1 B, G -4, G -5, G -10, G -11 and G -12 Appendix 6 has been revised since the Mine Water Pond has been altered, which resulted in a new re- design of Collection Ditch 3. Appendix 12 has the revised designs of the Mine Water Pond and the Leach Field. Appendix 13 has the changes to the mine facilities and the waste rock pile east of the portal buildings. Appendix 14 has all the material specifications and the installation procedures for liners, seals, etc. Exhibit L has the revised list of buildings and worst case bond costs. Several changes have been made to the layout and configuration of the leach field and mine water pond. After consultation with Colorado Lining International, modifications were made to the proposed synthetic liners to ensure durability and longevity. It should be kept in mind that the water emanating from the portal meets drinking water. This water has met CDPHE permit wet tests in the past and has been coming out of the mine for approximately 130 years. Responses to the adequacy questions are enclosed below. The plan includes onsite facilities and structures that, if approved, will become Environmental Protection Facilities (EPFs), per Rule 6.4.21(10). The submitted plan includes drawings and maps that you have signed and stamped, as required by the Rules. Please provide acknowledgement from you or the operator that the facilities (EPFs) will be constructed according to the final specifications that are approved by this office; and that if changes must be made during construction which vary from the approved plan, construction will cease while the changes are reviewed by this office.