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

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AVaZ Laboratories, Inc.
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2773 Downhill Drive Steamboat Springs, CO 80487 [phone] -
Ouray Silver Mines ACZ Project ID: L66632
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11-66632-07 JVG522956 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).
WG521892 Conductivity @25C SM2510B RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1Ox 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).
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(<10x MDL).
WG521875 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).
WG521840 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
W G523091 Sulfate D516-02/-07/-1 l- 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).
WG521892 Total Alkalinity SM2320B-Titration 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).
L66632-08 JVG522956 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).
WG521892 Conductivity @25C SM2510B RA Relative Percent Difference(RPD)was not used for data
validation because the concentration of the duplicated
sample is too low for accurate evaluation(<IOx 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).
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(<10x MDL).
WG521875 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).
SM2540C Z3 Sample volume yielded a residue less than 2.5 mg
WG521840 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
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/-1 l- 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).
WG521892 Total Alkalinity SM2320B-Titration 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).
REPAD.15.06.05.01
L66632-2107141355 Page 32 of 36