2015-10-27_HYDROLOGY - M1977215

• Permit No: M1977215
• IBM Index Class Name: Hydrology
• Doc Date: 10/27/2015
• Doc Name: Sampling Frequencty Reduction - Groundwarer Moitoring
• From: Rio Grande Silver
• To: DRMS
• Email Name: THM
• Media Type: D
• Archive: No

AraZ Laboratories, Inc. • • - - • - •
2773 Downhill Drive Steamboat Springs, CO 80487 [phone] 0 - • •
Rio Grande Silver, Inc. ACZ Project ID: L26556
METHOD QUAL DESCRIPTION
L26566-02 WG390371 Aluminum,total recoverable M200.7 ICP M1 Matrix spike recovery was high,the recovery of the
associated control sample(LCS or LFB)was acceptable.
Iron,total recoverable M200.7 ICP 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.
Manganese,total recoverable M200.7 ICP 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.
WG390944 Zinc,dissolved M200.8 ICP-MS 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.
WG391821 Zinc,total recoverable M200.8 ICP-MS 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.
WG390787 Chloride M300.0-Ion Chromatography RA Relative Percent Difference(RPD)was not used for data
validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
WG390792 Fluoride SM450OF-C M2 Matrix spike recovery was low,the recovery of the
associated control sample(LCS or LFB)was acceptable.
SM450OF-C RA Relative Percent Difference(RPD)was not used for data
validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
WG390186 Nitrate/Nitrite as N,dissolved M353.2-Automated Cadmium RA Relative Percent Difference(RPD)was not used for data
Reduction validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
Nitrite as N,dissolved M353.2-Automated Cadmium RA Relative Percent Difference(RPD)was not used for data
Reduction validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
WG390801 Nitrogen,ammonia M350.1 RA Relative Percent Difference(RPD)was not used for data
validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
WG390774 Nitrogen,total Kjeldahl M351.2-TKN by Block Digester RA Relative Percent Difference(RPD)was not used for data
validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
WG390363 Suede as S SM4500S2-D QD Reported value is the background-corrected concentration,
as described by the method.
WG390634 Total Alkalinity SM2320B-Titration RA Relative Percent Difference(RPD)was not used for data
validation because the sample concentration is too low for
accurate evaluation(<1 Ox MDL).
SM2320B-Titration RO The duplicate originally assigned to this sample was not
used for precision assessment because residue density
exceeded the method limits. Another duplicate in the batch
was used to assess precision. Method required duplicate
frequency was not met.
REPAD.15.06.05.01
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