2013-03-27_GENERAL DOCUMENTS - M1977215

• Permit No: M1977215
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 3/27/2013
• Doc Name: Appeal of Notice of Pending Designation as a DMO.
• From: Rio Grande Silver, Inc.
• To: DRMS
• Permit Index Doc Type: General Correspondence
• Email Name: AJW
• Email Name: GRM
• Email Name: RCO
• Media Type: D
• Archive: No

AZ Laboratories, Inc.
2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334 -5493
Rio Grande Silver, Inc.
ACZ ID WORRNU
METHOD Ct M. DESCRIPTION
L11060 -03 WG340476 Arsenic (1312)
WG340577 Barium (1312)
WG340476 Beryllium (1312)
WG340729 Boron (1312)
WG340476 Cadmium (1312)
REPAD.15 06 05.01
M6020 ICP -MS
M6010B ICP
norganic Extended
Qualifier Report
ACZ Project ID: L11050
B7 Target analyte detected in prep / method blank at or above
acceptance limit Sample value is > 10X the concentration
in the method blank
BA Target analyte detected in prep / method blank at or above
acceptance limit Sample value is > 20X the concentration
in the method blank
M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
M6020 ICP -MS ZB The ICP -MS Serial Dilution was not used for data validation
because the sample concentration was less than 100 times
the MDL.
WG340729 Calcium (1312) M6010B ICP ZG The ICP Serial Dilution was not used for data validation
because the sample concentration was less than 50 times
the MDL
WG340442 Cobalt (1312) M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
WG340757 Copper (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
M6020 ICP -MS ZB The ICP -MS Serial Dilution was not used for data validation
because the sample concentration was less than 100 times
the MDL
WG340577 Iron (1312) M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
WG340757 Lead (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
WG340729 Magnesium (1312) M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
WG340442 Manganese (1312) M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
WG340362 Mercury (1312) M7470A CVAA RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
WG340442 Molybdenum (1312) M60108 ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
Nickel (1312) M6010B ICP RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
Potassium (1312) M6010B ICP ZG The ICP Serial Dilution was not used for data validation
because the sample concentration was less than 50 times
the MDL
WG340476 Selenium (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
WG340442 Silica (1312) M60108 ICP ZG The ICP Serial Dilution was not used for data validation
because the sample concentration was less than 50 times
the MDL.
WG340476 Silver (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL)
Thallium (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
Uranium (1312) M6020 ICP -MS RA Relative Percent Difference (RPD) was not used for data
Page 33 of 38