2022-07-22_HYDROLOGY - M2012032

• Permit No: M2012032
• IBM Index Class Name: Hydrology
• Doc Date: 7/22/2022
• Doc Name: Water Monitoring - Groundwater
• From: Ouray Silver Mines, Inc.
• To: DRMS
• Annual Report Year: 2021
• Report Quarter_Month: 2
• Email Name: LJW
• Email Name: THM
• Media Type: D
• Archive: No

AC3Z Laboratories, Inc. i s
2773 Downhill Dnve Steamboat Spnngs, CO 80487 [phone] tl1 *s "
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Ouray Silver Mines ACZ Project ID: L73467
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L73467-01 NG543264 Chloride SM4500CI-E 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)
WG546281 Cyanide,total M335 4-Colorimetric w/ HC Initial analysis within holding time Reanalysis was past
distillation holding time,which was required due to a QC failure during
the initial analysis.
M335 4-Colorimetric w/ RA Relative Percent Difference(RPD)was not used for data
distillation validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL).
W G543670 Fluoride SM450OF-C M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable
W G543610 Nitrate/Nitrite as N M353 2-H2SO4 preserved 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)
WG544046 Phosphorus,total M365 1-Auto Ascorbic Acid M3 The spike recovery value is unusable since the analyte
(digest) concentration in the sample is disproportionate to the spike
level The recovery of the associated control sample(LCS
or LFB)was acceptable
WG543258 Residue,Filterable(TDS)@180C SM2540C 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)
WG543353 Residue,Non-Filterable(TSS)@105C SM2540D 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)
SM2540D Z3 Sample volume yielded a residue less than 2 5 mg
WG543192 Sulfate D516-02/-07/-11- M3 The spike recovery value is unusable since the analyte
TURBIDIMETRIC concentration in the sample is disproportionate to the spike
level The recovery of the associated control sample(LCS
or LFB)was acceptable.
L73467-02 NG543264 Chloride SM4500CI-E 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)
WG546281 Cyanide,total M335.4-Colonmetric w/ HC Initial analysis within holding time Reanalysis was past
distillation holding time,which was required due to a QC failure during
the initial analysis
M335 4-Colorimetric w/ RA Relative Percent Difference(RPD)was not used for data
distillation validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL).
W G543670 Fluoride SM450OF-C M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable
WG543610 Nitrate/Nitrite as N M353 2-H2SO4 preserved 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).
WG544046 Phosphorus,total M365 1-Auto Ascorbic Acid M3 The spike recovery value is unusable since the analyte
(digest) concentration in the sample is disproportionate to the spike
level.The recovery of the associated control sample(LCS
or LFB)was acceptable
WG543258 Residue,Filterable(TDS)@180C SM2540C 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)
WG543353 Residue,Non-Filterable(TSS)@105C SM2540D 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)
SM2540D Z3 Sample volume yielded a residue less than 2 5 mg
WG543192 Sulfate D516-02/-07/-11- M3 The spike recovery value is unusable since the analyte
TURBIDIMETRIC concentration in the sample is disproportionate to the spike
level The recovery of the associated control sample(LCS
or LFB)was acceptable
REPAD.15.06.05.01
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