2019-09-26_HYDROLOGY - M1977348

• Permit No: M1977348
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/26/2019
• Doc Name: Water Monitoring - Groundwater
• From: Holcum‎(US)‎, Inc.
• To: DRMS
• Email Name: AME
• Media Type: D
• Archive: No

ADZ Laboratories, Inc.
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] a
Golder Associates ACZ Project ID: L52434 '
L52434-08 NG475119 Chloride 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(<IOx MDL).
WG474803 Cyanide,Free D6888-09/OIA-1677-09 MA Recovery for either the spike or spike duplicate was outside
of the acceptance limits;the RPD was within the
acceptance limits. ,
W G474677 Mercury,dissolved M245.1 CVAA M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable.
WG474530 Nitrite as N,dissolved M353.2-Automated Cadmium RA Relative Percent Difference(RPD)was not used for data
Reduction validation because the concentration of the duplicated ,
sample is too low for accurate evaluation(<1 Ox MDL).
WG474831 Residue,Filterable(TDS)@180C SM2540C Z3 Sample volume yielded a residue less than 2.5 mg
W G474739 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.
M200.8 ICP-MS ZA Poor recovery for Silver quality control is accepted due to
low Silver solubility in samples,digestates,or extracts that '
do not contain sufficient Hydrochloric acid.
WG476400 Total Alkalinity SM2320B-Titration H1 Sample prep or analysis performed past holding time. See
case narrative.
L52434-09 NG475119 Chloride M300.0-Ion Chromatography DC Sample required dilution. Non-target analyte exceeded ,
calibration range.
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).
W G474803 Cyanide,Free D6888-09/OIA-1677-09 MA Recovery for either the spike or spike duplicate was outside ,
of the acceptance limits;the RPD was within the
acceptance limits.
W G474677 Mercury,dissolved M245.1 CVAA M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable.
WG474530 Nitrite as N,dissolved M353.2-Automated Cadmium RA Relative Percent Difference(RPD)was not used for data '
Reduction validation because the concentration of the duplicated
sample is too low for accurate evaluation(<1 Ox MDL).
WG474739 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.
M200.8 ICP-MS ZA Poor recovery for Silver quality control is accepted due to
low Silver solubility in samples,digestates,or extracts that '
do not contain sufficient Hydrochloric acid.
WG476400 Total Alkalinity SM2320B-Titration H1 Sample prep or analysis performed past holding time. See
case narrative.
REPAD.15.06.05.01
L52434-1908281443 Page 36 of 55 '