2018-05-17_HYDROLOGY - M2012032

• Permit No: M2012032
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/17/2018
• Doc Name: Water Monitoring - Groundwater
• From: Ouray Silver Mines
• To: DRMS
• Annual Report Year: 2018
• Report Quarter_Month: 1
• Email Name: THM
• Media Type: D
• Archive: No

ADZ Laboratories, Inc. • •
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] Al - • •
Ouray Silver Mines ACZ Project ID: L43205
L4320"3 AIG443637 Chloride SM4500CI-E M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable.
WG443975 Cyanide,total M335 4-Colonmetric 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)
WG443710 Fluoride SM450OF-C M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable
WG443574 Phosphorus,ortho dissolved M365 1-Automated Ascorbic QP The sample was filtered at the laboratory more than 15
Acid minutes after sample collection. For Orthophosphate,40
CFR Part 136.3 requires filtration within 15 minutes of
collection
M365.1-Automated Ascorbic RA Relative Percent Difference(RPD)was not used for data
Acid validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL).
M365.1-Automated Ascorbic ZU Analysis date/time preceeds filter date/time. A portion of
Acid sample was filtered and analyzed prior to the creation of a
Filter workgroup
WG443581 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)
WG443646 Silver,dissolved M200.8 ICP-MS M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable
M200.8 ICP-MS RF Relative Percent Difference(RPD)for Ag in spiked
samples exceeded limit. In the absence of HCI,
precipitation of Ag may occur at different rates
WG443528 Sulfate D516-02/-07-Turbidimetnc 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
REPAD.15.06.05.01
L43205-1803231004 Page 18 of 22