2021-12-22_REVISION - M2012032

• Permit No: M2012032
• IBM Index Class Name: Revision
• Doc Date: 12/22/2021
• Doc Name Note: Request for Tailings Placement for the Revenue Mine
• Doc Name: Request for Tailings Placement for the Revenue Mine
• From: Ouray Silver Mines, Inc
• To: DRMS
• Type & Sequence: TR15
• Email Name: LJW
• Email Name: THM
• Email Name: ACY
• Media Type: D
• Archive: No

AUZ Laboratories, Inc. • , •
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] • •
Ouray Silver Mines ACZ Project ID: L69171
ACZ • WORKNUM •D ! •
L69171-01 dVG532746 Acid Generation Potential(calc) M600/2-78-054 1.3 N1 See Case Narrative
Acid Neutralization Potential(calc) M600/2-78-054 1 3 N1 See Case Narrative
Acid-Base Potential(calc) M600/2-78-054 1 3 N1 See Case Narrative
WG530787 Aluminum(1312) M6010D ICP RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
WG530915 Antimony(1312) M6020B ICP-MS M3 The spike recovery value is unusable since the analyte
concentration in the sample is disproportionate to the spike
level The recovery of the associated control sample(LCS
or LFB)was acceptable.
M6020B ICP-MS ZG The ICP or ICP-MS Serial Dilution was not used for data
validation because the sample concentration was less than
50 times the MDL
Arsenic(1312) M6020B ICP-MS ZH Serial Dilution exceeded the acceptance criteria Matrix
interference[physical or chemical]is suspected
Barium(1312) M6020B ICP-MS ZH Serial Dilution exceeded the acceptance criteria Matrix
interference[physical or chemical]is suspected
Beryllium(1312) M6020B ICP-MS RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
WG530612 Bicarbonate as CaCO3 SM2320B-Titration Q6 Sample was received above recommended temperature
WG530712 Boron(1312) M6010D ICP RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL)
WG531493 Bromide(1312-DI) M300 0-Ion Chromatography HD Analysis is outside the intended scope of the method,which
does not provide hold time information for soil extracts No
hold time is observed for collection to extraction The
referenced method hold time is observed for extraction4o-
analysis
M300.0-Ion Chromatography M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable
M300 0-Ion Chromatography RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
WG530915 Cadmium(1312) M6020B ICP-MS RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
WG531038 Carbon,total organic(TOC)(1312-DI) SM5310B HD Analysis is outside the intended scope of the method,which
does not provide hold time information for soil extracts No
hold time is observed for collection to extraction The
referenced method hold time is observed for extraction4o-
analysis
SM5310B Q6 Sample was received above recommended temperature
SM5310B RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL)
WG530612 Carbonate as CaCO3 SM2320B-Titration Q6 Sample was received above recommended temperature
WG531493 Chloride(1312-DI) M300 0-Ion Chromatography HD Analysis is outside the intended scope of the method,which
does not provide hold time information for soil extracts No
hold time is observed for collection to extraction The
referenced method hold time is observed for extraction4o-
analysis
M300.0-Ion Chromatography RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL)
WG530915 Chromium(1312) M6020B ICP-MS RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
Cobalt(1312) M6020B ICP-MS RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL)
WG530612 Conductivity @25C(1312-DI) SM2510B Q6 Sample was received above recommended temperature
WG530915 Copper(1312) M6020B ICP-MS RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL)
REPAD.15.06.05.01
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