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<br />the subsequent clean-up of the heap leach pad, the existing ore on the surtace will not <br />be able to be processed within the first 180 days of the season. MDI, however, will be <br />able to process the existing ore pile within 180 days at the completion of the heap leach <br />pad clean-up. It is quite likely that all this could be completed in the first seasons <br />operation, weather permitting. But, unpredictable events can occur, so, MDI asks that <br />the division not penalize MDI for not being able to complete the processing of existing <br />ore on site within 180 days if MDI starts to process it and has to end milling to prepare <br />for the winter season. If this does happen, MDI will immediately process the same <br />material at the beginning of the next season. <br />4. Please indicate how the mill processing facilities pad will deal with water <br />accumulations from precipitation events that may become contaminated by <br />spillage of milling process materials and solutions within the containment pad. <br />Also address how the operation will be winterized to prevent spilling of solutions <br />from freezing and breaking of pipes and tanks. <br />Included in Appendix 3 are plans for a structure to cover the mill processing facility pad. <br />If this structure meets the Divisions approval, it will protect the mill process equipment <br />from precipitation events. Also included is a scaled drawing of the mill processing <br />facility pad with a sump. The sump will be designed to catch any runoff or spillage that <br />falls on the mill processing facility pad. Once in the sump, this material will flow by <br />gravity (or be pumped via 4" pipe if it is pulp or sand) to the lined tailings pad. It should <br />be noted that with a roof over the structure and an attentive operator, spillage is an <br />extremely unlikely event. As far as winterizing goes, all pipes and tanks containing <br />water will be drained into the lined tailings pad at the end of the season. According to <br />MDI's calculations the total volume of the tailings pond is about 67,900 ft3. The total <br />volume of water to be stored is around 5,350 ft'. <br />5. Please be aware that Division policy requires that any liner installation or <br />repair be observed by Division personnel, and must be conducted such that the <br />installation can be certified. <br />MDI will notify the Division prior to any installation or repair. <br />6. Please characterize, as best as possible, the tailings resulting from the milling <br />operation before and after the solidification process in terms of being a toxic or <br />acid-forming material. <br />Since MDI has temporarily accepted the DMO status, MDI would like to defer this <br />comment until we can produce representative tails. As it stands, does not have <br />representative tails because the Neglected ore has never been run through a flotation <br />circuit. When MDI sets up the flotation circuit to clean-up the leach pad MDI will be <br />generating tails as MDI mills and screens the leach pad. Can MDI, within the first 30 <br />days of operation submit representative tails for analysis? During this time all tails <br />