2017-09-28_REVISION - M1981185 (106)

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• Vegetated buffer zones; • Silt fences; • Wattles; • Erosion control blankets; and • Check dams. C. Ore Stockpile Consolidation and Processing Several historic surface ore stockpiles (referred to as the May Day No. 2, (<100 cubic yards) May Day No. 3 (<1,500 cubic yards), and Idaho stockpiles (<2,100 cubic yards) (see Figure D-4) will be evaluated. Economical ore will be removed and processed at an offsite custom mill. Phase 2 Undereround Exploration and Production Phase: May Day No. 1 Operational Area Underground stockpiled ore within the May Day No. 1 stope (approximately 7,400 CY) and ore stockpiles located near the historic Idaho Mill building (2,100 CY) (Exhibit D -Figure D-4) will be the mining focus during the first two to three years. After ore stockpiles have been removed and offsite custom Mill' processed and upon completion of the Phase 2 underground exploration phase, a more detailed mine plan will be developed and, if necessary, an amendment or technical revision (TR) will be submitted for approval. A detailed mine plan will be prepared upon completion of mine development and underground exploration activities. The initial underground mining phase will commence in May Day No. I utilizing blasting methods, jack legs, and front-end loaders. Mine support vehicles will also include excavators, backhoes, front end loaders, rock bolt drills, dozers, pickup trucks, dump trucks and 25 -ton ore haulers. Ore will be hauled from May Day No. l and the Pay Day Idaho mine area to the Base of Operations to be loaded into over the road approved haul trucks. Preliminary exploration results indicate ore production will continue for a minimum of 5 years at average rate ranging from 40-60 tons per day, 5 days per week, 10 months per year. In 2013, the May Day No. I portal was stabilized in accordance with TR -I and will be used as the primary access to the underground mine workings. The Chief Portal will be used as an emergency escape way and for mine ventilation (Refer to Figure D- 10). The Chief Portal was reconstructed in 2016 in accordance with TR 5, TR 7 and TR 8. Other affected mine areas include the Pay Day Idaho mine area (see Figure D-11) and pre-existing roads (see Figure 12a and Figure 12b). When necessary, blasting will be done in accordance with the protocols described in the Geotechnical Stability Exhibit 6.5.4 and will comply with Mine Safety and Health Administration (MSHA) and the Bureau of Alcohol, Tobacco and Firearms Administration (ATF) requirements. Mining and underground exploration activities work will be performed in accordance with MSHA regulations. 8 Potential custom mills include the Union Mill (Leadville) and Gold Links Mill South of Gunnison, Colorado).