2021-05-12_REVISION - M2012032 ‎(2)‎

• Permit No: M2012032
• IBM Index Class Name: REVISION
• Doc Date: 5/12/2021
• Doc Name: Adequacy Review Response
• From: Ouray Silver Mines, Inc.
• To: DRMS
• Type & Sequence: TR12
• Email Name: LJW
• Email Name: THM
• Media Type: D
• Archive: No

ACZ Laboratories, Inc. • • - - • - •
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] 01 - • •
ACZ Project ID: L65443
METHODACZ ID WORKNUM PARAMETER QUAL DESCRIPTION
analyte was not detected in the sample[<MDL].
4-Chlorotoluene M8260C/D GUMS 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).
4-Isopropyltoluene M8260C/D GUMS 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).
4-Methyl-2-Pentanone M8260C/D GUMS 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).
M8260C/D GC/MS VB CCV recovery was outside of acceptance limits.See Case
Narrative.
Acetone M8260C/D GUMS 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).
M8260C/D GC/MS VB CCV recovery was outside of acceptance limits.See Case
Narrative.
Acrylonitrile M8260C/D GC/MS 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).
M8260C/D GC/MS VB CCV recovery was outside of acceptance limits.See Case
Narrative.
Benzene M8260C/D GUMS 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).
Bromobenzene M8260C/D GUMS 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).
Bromochlorom ethane M8260C/D GC/MS 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).
M8260C/D GUMS VB CCV recovery was outside of acceptance limits.See Case
Narrative.
Bromodichloromethane M8260C/D GC/MS 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).
Bromoform M8260C/D GUMS 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).
Bromomethane M8260C/D GUMS 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).
Carbon Disulfide M8260C/D GUMS M1 Matrix spike recovery was high,the recovery of the
associated control sample(LCS or LFB)was acceptable.
M8260C/D GC/MS 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).
Carbon Tetrachloride M8260C/D GC/MS M1 Matrix spike recovery was high,the recovery of the
associated control sample(LCS or LFB)was acceptable.
M8260C/D GUMS 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).
Chlorobenzene M8260C/D GC/MS 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).
Chloroethane M8260C/D GC/MS M1 Matrix spike recovery was high,the recovery of the
associated control sample(LCS or LFB)was acceptable.
M8260C/D GC/MS 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).
Chloroform M8260C/D GC/MS 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).
Chloromethane M8260C/D GUMS 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).
REPAD.15.06.05.01
L65443-2105101543 Page 27 of 37