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OLR4Y SrLV ER NIAES <br /> Response:As discussed and agreed with the Division on July 2' the mine will commit to characterization <br /> of tailings during the commissioning process and will segregate tailings in the Revenue TSF on a woven <br /> clay barrier(liner). <br /> 36. In addition to item 35, complete testing for SPLP, ABA, TCLP Etc. as applicable for all <br /> waste streams, including process water,generated at the Revenue Mine. <br /> a. Provide updated values of Table 5 for; raw ore, Pb Concentrate,Zn Concentrate, <br /> and tailings upon commencement of wet testing. <br /> b. Provide updated values of Table 6 for raw ore and tailings upon commencement of <br /> wet testing. <br /> Response: The only waste stream that the mill will produce is tailings. <br /> a. Once the mill is processing ore and the process has been refined the mine will supply updated <br /> values for Table 5 Multielement Analysis of Tailings and Concentrates <br /> b. Once the mill is processing ore and the process has been refined, the mine will provide updated <br /> values for Table 6 ABA of Tailings. <br /> 37. Provide a summary table that compares all TCLP results to the EPS's 40 CFR 268.40 Table <br /> 7-1 (Maximum Concentration of Contaminants for Toxicity Characteristics). <br /> a. Provide TCLP results and Table 7-1 in the same units for comparison <br /> b. Specifically identify any contaminant that is over the regulatory limit <br /> Response: Once the mill is creating tailings the mine will conduct a TCLP and place the results of the <br /> procedure into a table to compares results against Table 7-1. <br /> a. The results of the TCLP will be in the some units at Table 7-1. <br /> b. If any contaminate is over the regulatory limit it will be identified in the table. <br /> *Note that chemical make ups of concentrates and waste streams may change depending <br /> on the geochemistry of the ore body being mined. If OSMI encounters a significantly different <br /> ore body in regards to geochemistry, a re-evaluation of the waste stream, tailings and <br /> concentrate chemistry will be required to ensure that waste streams are properly characterized <br /> (i.e. a Hazardous Waste Determination). <br /> 38. Please commit to notifying the Division and submitting new test results if such a change <br /> is encountered. <br /> Response: The mine has conducted metallurgical studies on all veins currently with reserves. <br /> The metallurgical test provided to the division on July 2111 include those results. The <br /> metallurgical studies are attached for the Division's reference. As the mine expands and <br /> explores various other vein systems in the region, it will commit to conducting metallurgical <br /> studies before introducing it to the mill process. <br /> 1011' agc <br />