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2017 Annual Darn Safety Inspection Julio Madrid <br /> San Luis TSF Battle Mountain Resources, Inc. <br /> Lower Downstream Face (Photos 26-32): The presence of minor erosional rilling and gullying <br /> was observed at the lower downstream face south of the underdrain outlet (Figure 2, Photo 27). <br /> The individual rills observed are discontinuous, and are frequently interrupted by brushy <br /> vegetation. The absence of significant sediment deposits on the left downstream groin liner <br /> indicates that erosion of the dam face is not problematic at this time (Photos 26, 28, 29, 30). The <br /> condition is presently judged to be minor; however, development of erosional rills and gulleys at <br /> the downstream face should be monitored closely to make sure erosion does not progress to <br /> detrimental levels. <br /> Brush/Debris/Vegetation Removal(Photos 19,30): Minor deposits of brush and sediment have <br /> started to accumulate in the drop structure outlet basin (Photo 19), and at the inlet of the access <br /> road culvert at the left downstream groin (Photo 30). Vegetation is beginning to develop in the <br /> drop structure outlet basin. This debris should be removed to maintain the capacity of these surface <br /> drainage features. <br /> CONCLUSIONS <br /> Based on the observations described above, the overall surficial condition of the dam is judged to <br /> be `Conditionally Satisfactory' pending completion of the minor improvements described herein <br /> and replacement of the drop structure in 2018. Please don't hesitate to call should you have <br /> questions or concerns regarding this inspection report. <br /> Respectfully Submitted, <br /> Engineering Analytics, Inc. <br /> Ad J. <br /> Mark S. Abshire, P.E. <br /> Senior Geotechnical Engineer <br /> San Luis TSF_Q2 &Annual Dam 3 Engineering Analytics, Inc. <br /> Safety Inspection Report.docx <br />