2014-12-29_REPORT - M1977215

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 12/29/2014
• Doc Name: Interim Waste Rock Characterization Summary, 1.
• From: Rio Grande Silver, Inc.
• To: DRMS
• Email Name: RCO
• Media Type: D
• Archive: No

Mr. Randy McClure/Rio Grande Silver, Inc. 9
MLI Job No. 3819 -November 26, 2014
Table 9.- Profile II Analytical Results, HC Extract,
Bulldog Project, Sample BDP-TBWTC-HC
Week
Analysis,mg/kg Week 0 Week 1 Week 2 Week 4 Week 8 Week 12
Alkalinity,CaCO3 38 22 29 21 27 39
CO3,CaCO3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
HCO3 38 22 29 21 27 39
Aluminum <0.045 <0.045 <0.045 <0.045 <0.045 <0.045
Ammonia,as Nitrogen 0.11 <0.050 <0.050 <0.050 <0.050 <0.050
Antimony 0.0055 0.0086 0.010 0.011 0.010 0.0097
Arsenic 0.011 0.021 0.034 0.053 0.044 0.044
Barium 0.015 0.035 0.019 <0.010 <0.010 0.015
Beryllium <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010
Bismuth <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Boron <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Cadmium 0.0020 <0.0050 <0.0010 <0.0010 <0.0010 <0.0010
Calcium 32 54 31 9.5 9.5 14
Chloride 2.0 1.3 <1.00 <1.00 <1.00 <1.00
Chromium <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 0.0077
Cobalt <0.010 <0.010 <0.010 <0.010 <0.010 <0.010
Copper <0.050 <0.050 <0.050 <0.050 <0.050 <0.050
Fluoride 0.42 0.52 0.76 0.59 0.23 0.21
Gallium <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Hardness,Total 80 140 77 24 24 35
Iron <0.010 0.021 <0.010 <0.010 <0.010 0.072
Lead <0.0025 <0.0025 <0.0025 <0.0025 <0.0025 <0.0025
Lithium <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Magnesium <0.50 0.74 <0.50 <0.50 <0.50 <0.50
Manganese 0.038 0.022 0.0096 <0.0050 <0.0050 <0.0050
Mercury <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010
Molybdenum <0.010 0.019 0.024 <0.050 <0.010 <0.010
Nickel <0.010 <0.010 <0.010 <0.010 <0.010 <0.010
Nitrate as N 0.31 <0.10 <0.10 <0.10 <0.10 <0.10
Nitrite as N 0.13 0.039 <0.025 <0.025 <0.025 <0.025
Nitrogen,Total 0.43 <0.32 <0.32 <0.32 <0.32 <0.32
pH,stu 7.89 7.60 7.84 8.13 7.66 7.77
Phosphorus <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
Potassium 6.4 6.7 5.2 2.9 2.7 3.2
Scandium <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Selenium 0.017 0.031 0.023 0.013 0.0081 0.0051
Silver <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050
Sodium 14 17 14 5.6 3.9 4.1
Strontium 0.62 1.0 0.61 0.19 0.18 0.27
Sulfate 140 160 86 18 8.4 8.0
Thallium <0.0010 <0.0010 <0.0010 <0.0010 <0.0010 <0.0010
Tin <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Titanium <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Total Dissolved Solids 270 300 160 71 56 76
Uranium <0.0050 <0.0050 <0.0050 <0.0050 <0.0050 <0.0050
Vanadium <0.010 <0.010 <0.010 0.011 <0.010 <0.010
Zinc <0.010 0.013 <0.010 <0.010 <0.010 0.036
Electrical Conductivity,umhos/cm 460 460 280 110 85 110
Cations,meq/L 2.38 3.67 2.29 0.79 0.71 0.96
Anions,meq/L 3.64 3.69 2.22 0.69 0.55 0.70
Balance,% 21 <1.0 1.5 7.0 13 16
WET Lab Report# 1407723 1408059 1408249 1408654 1409624 1410540
McCLELLAND LABORATORIES, INC.