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Table 2 - Summary of Permitted Areas <br /> Area Permitted Actual Disturbance Disturbance <br /> Disturbance Disturbance Areas Released Areas <br /> (Acres) Areas from Permit Remaining <br /> (Acres) Area (Acres) in Permit <br /> Area Acres <br /> East Pit 20 20 20 0 <br /> West Pit 110 100 8.9 91.1 <br /> Waste Rock A 0 0 0 0 <br /> Waste Rock B 18 18 0 18 <br /> Waste Rock C 30 28 25.8 2.2 <br /> Waste Rock D 42 42 42 0 <br /> South Waste Rock 50 35 33.6 1.4 <br /> Mill Area 26 26 3.1 22.5 <br /> ESI Leach Pad 10 10 0 10 <br /> Borrow Area 11 5.5 0 5.5 <br /> Roads 30 24.4 3.7 20.7 <br /> Tailing Facility 192 192 0 192 <br /> Tailing Collection Pond 5 5 0 5 <br /> Admin. Office Complex — <br /> Deeded lands to Costilla 3 3 3 0 <br /> County Soil Conservation <br /> District CCSCD) <br /> Total Area 547 508.9 140.1 368.4 <br /> Dam Inspections <br /> In 2014, Battle Mountain Resources, Inc. provided the first annual San Luis Project Tailings <br /> Dam Detailed Inspection Report (Detailed Inspection Report) (Miller Geotechnical Consultants, <br /> Inc., February 2014). The Detailed Inspection Report concluded that the tailings facility dam is in <br /> good condition, but included recommendations for improvements to the South Diversion Ditch <br /> and the associated drop structure to minimize risks associated with stormwater during major <br /> precipitation events. In 2015, 2016, and 2017, Miller Geotechnical Consultants, Inc. completed <br /> hydrologic and geotechnical studies, and prepared design drawings and specifications for <br /> improvements to achieve the recommendations. The improvements included replacement of the <br /> existing conduit drop structure with a larger reinforced concrete drop structure at the south <br /> embankment, and increasing the capacity of the South Diversion Ditch. <br /> In the fall of 2016, BMRI performed routine maintenance on the South Diversion Ditch to <br /> remove accumulated sediments and vegetation. Due to the minimal amount of regrading <br /> required, BMRI made the identified South Diversion Ditch improvements as part of the <br /> maintenance activities. Those improvements did not change the existing function of the South <br /> Diversion Ditch System nor alter the existing drop structure. <br /> BMRI submitted a proposed Technical Revision in February of 2017 for construction of a new <br /> Annual Report and Fee-2016 3 AES,Inc. <br /> Battle Mountain Resources-San Luis, CO March 2017 <br />