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

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McClelland Laboratory-1308459 Amended
Spike Sample MS MSD Spike MS% MSD%
QCBatckID QCType Parameter Method Sample Result Result Result Value Units Rec. Rec. RPD
QC13080873 MS 1 Chloride EPA 300.0 1308455-004 ND 5.34 5.44 5.00 mg/L 105 107 2%
QC13080873 MS 2 Chloride EPA 300.0 1308457-006 ND 5.45 5.48 5.00 mg/L 108 108 1%
QC13080875 MS 1 Nitrite Nitrogen EPA 300.0 1308455-004 ND 0.496 0.496 0.500 mg/L 99 99 <1%
QC13080875 MS 2 Nitrite Nitrogen EPA 300.0 1308457-006 ND 0.511 0.507 0.500 mg/L 102 101 1%
QC13080877 MS 1 Nitrate Nitrogen EPA 300.0 1308455-004 ND 2.16 2.20 2.00 mg/L 106 109 2%
QC13080877 MS 2 Nitrate Nitrogen EPA 300.0 1308457-006 ND 2.19 2.20 2.00 mg/L 108 109 <1%
QC13080879 MS 1 Sulfate EPA 300.0 1308455-004 125 10.8 11.1 10.0 mg/L 96 98 3%
QC13080879 MS 2 Sulfate EPA 300.0 1308457-006 19.1 30.0 30.0 10.0 mg/L 109 110 <1%
QC1308091 I MS 1 Ammonia,as Nitrogen SM 4500 NH3 1308374-002 0.115 1.08 1.07 1.00 mg/L 96 95 1%
QC13080911 MS 2 Ammonia,as Nitrogen SM 4500 NH3 1308446-009 ND 0.997 0.989 1.00 mg/L 100 99 1%
QC13080967 MS 1 Total Kjeldahl Nitrogen EPA 351.2 1308476-001 0.432 1.07 1.04 0.690 mg/L 92 89 3%
QC13080967 MS 2 Total Kjeldahl Nitrogen EPA 351.2 1308478-001 0.295 0.932 0.926 0.690 mg/L 92 91 1%
QC13080967 MS 3 Total Kjeldahl Nitrogen EPA 351.2 1308471-001 0.502 M 1.10 1.37 0.690 mg/L NC NC NC
QC13080967 MS 4 Total Kjeldahl Nitrogen EPA 351.2 1308459-001 4.27 SC 4.34 4.44 0.690 mg/L NC NC NC
QC13090078 MS 1 Aluminum,Dissolved EPA 200.7 1308478-001 ND 1.08 1.08 1.00 mg/L 105 105 <1%
Barium,Dissolved EPA200.7 1308478-001 0.070 1.03 1.03 1.00 mg/L 96 96 <1%
Beryllium,Dissolved EPA 200.7 1308478-001 ND 1.00 1.00 1.00 mg/L 100 100 <1%
Bismuth,Dissolved EPA200.7 1308478-001 ND 1.04 1.05 1.00 mg/L 105 106 1%
Boron,Dissolved EPA 200.7 1308478-001 0.570 1.55 1.51 1.00 mg/L 98 94 3%
Cadmium,Dissolved EPA 200.7 1308478-001 ND 0.964 0.960 1.00 mgt 96 96 <1%
Calcium,Dissolved EPA 200.7 1308478-001 181 190 193 10.0 mg/L 90 120 2%
Chromium,Dissolved EPA 200.7 1308478-001 ND 0.984 0.991 1.00 mg/L 98 99 1%
Cobalt,Dissolved EPA 200.7 1308478-001 ND 0.963 0.971 1.00 mg/L 96 97 1%
Copper,Dissolved EPA 200.7 1308478-001 ND 5.06 5.07 5.00 mg/L 101 102 <1%
Gallium,Dissolved EPA 200.7 1308478-001 ND 1.05 1.05 1.00 mg/L 105 105 <1%
Iron,Dissolved EPA 200.7 1308478-001 0.025 1.11 1.10 1.00 mg/L 108 107 1%
Lithium,Dissolved EPA 200.7 1308478-001 ND M 1.43 1.41 1.00 mg/L NC NC NC
Magnesium,Dissolved EPA 200.7 1308478-001 12.3 23.3 23.5 10.0 mg/L 110 112. 1%
Manganese,Dissolved EPA 200.7 1308478-001 0.008 0.981 0.981 1.00 mg/L 97 97 <1%
Molybdenum,Dissolved EPA 200.7 1308478-001 0.036 0.973 0.989 1.00 Img/L 94 95 2%
Nickel,Dissolved EPA 200.7 1308478-001 ND 4.88 4.86 5.00 mg/L 98 97 <1%
Phosphorus,Dissolved EPA 200.7 1308478-001 ND 5.42 5.42 5.00 mg/I. 103 103 <1%
Potassium,Dissolved EPA 200.7 1308478-001 35.7 M 50.6 512 10.0 mg/L NC NC NC
Scandium,Dissolved EPA 200.7 1308478-001 ND 0.979 0.978 1.00 mg/L 98 98 <1%
Silver,Dissolved EPA 200.7 1308478-001 ND 0.090 0.091 0.090 mg/L 97 99 1%
Sodium,Dissolved EPA 200.7 1308478-001 184 SC 198 201 10.0 ing/L NC NC NC
Strontium,Dissolved EPA 200.7 1308478-001 1.91 2.97 2.98 1.00 ing/L 106 107 <1%
Tin,Dissolved EPA 200.7 1308478-001 ND 0.939 0.947 1.00 ing/L 99 100 1%
Titanium,Dissolved EPA 200.7 1308478-001 ND 1.09 1.09 1.00 mg/L 109 109 <1%
Vanadium,Dissolved EPA 200.7 1308478-001 0.012 0.979 0.976 1.00 rag/L 97 96 <1%
Zinc,Dissolved EPA 200.7 1308478-001 ND 0.997 1.01 1.00 mg/L 100 101 1%
QC13090115 MS 1 Uranium,Dissolved EPA 200.8 1308478-001 ND 0.0095 0.0095 0.010 mg/L 95 95 <1%
Mercury,Dissolved EPA 200.8 1308478-001 ND 0.001255 0.001157 0.001 rag/L 125 115 8%
Antimony,Dissolved EPA 200.8 1308478-001 0.0136 0.0226 0.0229 0.010 mg/L. 90 93 1%
Arsenic,Dissolved EPA 200.8 1308478-001 0.0226 0.0703 0.0709 0.050 mg/L 96 97 1%
Lead,Dissolved EPA 200.8 1308478-001 ND 0.0088 0.0090 0.010 mg/L 88 90 2%
Selenium,Dissolved EPA 200.8 1308478-001 ND 0.0500 0.0488 0.050 mg/L 94 92 2%
Thallium,Dissolved EPA 200.8 1308478-001 0.0034 0.0136 0.0137 0.010 mg/L 102 103 1%
DF=Dllution Factor,RL Reporting Limit,ND=Not Detected or<RL Page 8 of 8
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