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6.4.20(6)(b)(ii) <br />To avoid redundancy, the handling methods of potentially acid forming waste rock have been described at length in <br />Exhibit C and above in 6.4.20(6)(a). <br />Additionally, Exhibit D, 63.4(1)(e) specifies decommissioning and reclamation measures for the Mobile Mill Site. <br />The Tailings Impoundment contains processed tailings that are non-acid forming. Refer to the waste stream <br />characterization contained in the appendix of Exhibit C. <br />6.4.20(6)(b)(iii) <br />Venture Resources will adhere to the operations plan set forth in Exhibit C. This plan has been devised to prevent <br />adverse off-site impacts through measures of stormwater control, operator training, carefully monitored processing, <br />routine inspection of equipment, etc. <br />The reclamation measures set forth in Exhibit D, 63.4(1)(e) for the Mobile Mill Site shall also apply for periods of <br />Temporary Cessation. Because of the phased reclamation prescribed for the Tailings Impoundment, stability of that <br />structure will be maintained during a period of Temporary Cessation. <br />6.4.20(6)(c) <br />There is approximately 8,000 tons of pre-existing abandoned mine waste rock currently contained within the <br />proposed Tailings Impoundment area. This material is going to be processed to remove acid forming materials <br />(sulfide minerals and heavy metals). A detailed explanation of this process is found in Exhibit C. <br />This treatment provides a net benefit of 2-3 order of magnitude, in many cases, when compared to its pre-existing <br />state. Refer to the waste stream characterization before and after analysis in the appendix of Exhibit C. The <br />resulting tailings are non-acid forming. <br />• The temporary Crusher Feed Pile has a concrete liner and containment berm to prevent any acid runoff/seepage <br />during operations. See 6.4.20(6)(a) of this Exhibit T for more on handling. <br />The fate of acid forming material at this site is elimination through a carefully engineered process that removes acid <br />forming materials (sulfide minerals and heavy metals) from waste rock/ore coupled with a reclamation plan that <br />ensures the processing site is neutralized upon cessation of the operation. <br />6.4.20(7)(a) <br />The proposed operation is essentially converting an area containing pre-existing abandoned waste rock into an <br />impoundment for processed tailings that are inert and void of acid forming material. As shown in the Waste Stream <br />Characterization analysis within Exhibit C, the proposed operation is extremely effective in achieving this. <br />6.4.20(7)(b) <br />There are no Designated Chemicals to be used in this operation. Refer to Exhibit C, 633(2)(9) for a list of non- <br />designated chemicals to be used. There is also a complete collection of MSDS for these chemicals at the end of <br />Exhibit C. <br />There is no acid mine drainage from any adits, tunnels, or underground mine workings on this site either pre- <br />existing or proposed. <br />On a temporary basis, as part of normal operations, the gravity and flotation concentrate products are collected and <br />stored in Intermediate Bulk Shipping Containers which are palletized polyethylene containers surrounded by a steel <br />skeleton framework for protection from impact and crushing. These containers measure approximately 42" cubic. <br />At any time there may be upto 30 of these such containers stored on site, staged prior to transportation offsite. It <br />shall be noted these containers meet stringent DOT standards for transporting this sort of material. <br />6.4.20(7)(c) <br />There will be no changes to the current, natural geological structure of the permitted area. All proposed operations <br />• are surface in nature. The geochemical conditions will only improve by removing the acid forming materials <br />(sulfide minerals and heavy metals) from the pre-existing waste rock.