2021-07-27_HYDROLOGY - M2012032

• Permit No: M2012032
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/27/2021
• Doc Name: Water Monitoring - Groundwater
• From: Ouray Silver Mines
• To: DRMS
• Annual Report Year: 2021
• Report Quarter_Month: Jun
• Email Name: LJW
• Media Type: D
• Archive: No

ACZ
Laboratories, Inc. ro -0.
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] &' '
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Ouray Silver Mines ACZ Project ID: L66632
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L66632-01 NG521725 Calcium,dissolved M200.7 ICP 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.
WG522956 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).
WG522398 Cyanide,total 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).
WG521725 Manganese,dissolved M200.7 ICP 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.
WG522199 Phosphorus,total M365.1-Auto Ascorbic Acid RA Relative Percent Difference(RPD)was not used for data
(digest) validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL).
WG521865 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(<1 Ox MDL).
WG521805 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
WG521725 Sodium,dissolved M200.7 ICP 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.
WG523091 Sulfate D516-021-07/-11- M2 Matrix spike recovery was low,the recovery of the
TURBIDIMETRIC associated control sample(LCS or LFB)was acceptable.
D516-02/-07/-11- RA Relative Percent Difference(RPD)was not used for data
TURBIDIMETRIC validation because the concentration of the duplicated
sample is too low for accurate evaluation(<10x MDL).
L66632-02 NG521725 Calcium,dissolved M200.7 ICP 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.
WG522956 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).
WG522398 Cyanide,total M335.4-Colon metric 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(<1 Ox MDL).
WG521725 Manganese,dissolved M200.7 ICP 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.
WG522199 Phosphorus,total M365.1-Auto Ascorbic Acid RA Relative Percent Difference(RPD)was not used for data
(digest) validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL).
WG521865 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).
WG521805 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
WG521725 Sodium,dissolved M200.7 ICP 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.
WG523091 Sulfate D516-02/-07/-11- M2 Matrix spike recovery was low,the recovery of the
TURBIDIMETRIC associated control sample(LCS or LFB)was acceptable.
D516-02/-07/-11- RA Relative Percent Difference(RPD)was not used for data
TURBIDIMETRIC validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL).
REPAD.15.06.05.01
L66632-2107141355 Page 29 of 36