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a. As the limelore mixture is intended to increase the pH of the VLFs and will be <br /> transported between different facilities, please provide some narrative to address the <br /> following: <br /> i. The toxicity and potential environmental impacts of the limelore mixture, <br /> CCV has included the Safety Data Sheets (SDSs) for both the lime and ore <br /> products in Attachments 1 and 2. Please note that the ore product is referred <br /> to as "PSES Filtrate" in the attachment and in the remainder of this response. <br /> There will be no environmental impact of this PSES filtrate/lime mixture as it <br /> will be bagged at the PSES Facility prior to truck transfer to the VLF <br /> facilities. CCV will report and clean up any accidental spills or releases to <br /> DRMS as required by the Hard Rock Metal Mining Rules. <br /> ii. The anticipated volume of the limelore material, <br /> CCV anticipates that approximately 4,000 tons of the PSES filtrate will be <br /> generated each year. <br /> iii. If the truck transfer of this material will occur off lined areas, and <br /> The PSES filtrate will be generally transported on lined areas, with the <br /> exception of two short sections. The planned on and off-liner route locations <br /> are included in the newly added Figure 8. Again, this solid material will be <br /> bagged at the PSES Facility prior to truck transfer to the VLF facilities, and <br /> CCV remains committed to report and clean up any accidental spills or <br /> releases to DRMS as required by the Hard Rock Metal Mining Rules. <br /> Additionally, this material leaves the filter press at the PSES as a solid, <br /> fragmented, cake-like material and pending DRMS approval, will be <br /> transported to the VLFs in this physical state. <br /> iv. As the Division understands the Arequa Gulch VLF is already at maximum build- <br /> out, where would this material be placed on the AGVLF? <br /> The Arequa Gulch VLF has several locations that are below the 10,400 foot <br /> stacking height, as approved in Amendment 11. Additionally, as of November <br /> 2018, approximately 45 million tons of the total permitted capacity remains <br /> available at the Arequa Gulch VLF. Pending DRMS approval, the PSES <br /> filtrate material will be placed in all available areas of the VLFs, while <br /> adhering to all approved stacking plans. <br /> b. The Division assumes this material will be relatively fine grind. No discussion was <br /> provided for potential impacts to geotechnical stability of the VLFs with the introduction <br /> of this material. Please address the impacts on slope stability. <br /> The Division is correct that once it dries, it is a relatively fine material.When placed <br /> on the surface of the VLFs, the PSES filtrate will be dumped, dispersed with a <br /> dozer, and ripped in order to be intermixed with ore. A 10-ft setback from the crest <br /> will be left to keep the material away from the edges. <br />