2018-05-08_HYDROLOGY - M1977300

• Permit No: M1977300
• IBM Index Class Name: Hydrology
• Doc Date: 5/8/2018
• Doc Name Note: Water Quality Data and Mine Pool Level Measurements for March 2018
• Doc Name: Water Quality Data and Mine Pool Level Measurements for March 2018
• From: Colorado Legacy Land
• To: DRMS
• Email Name: MAC
• Media Type: D
• Archive: No

rigtatra�6ro.up Analytical Report
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Client:
Alexco Inc.
Analyte:
Calcium, Ca — Dis
Prep Dale:
03120/2018
Analysis Date:
03122/2018
Approved Method Source:
40 CFR 136.3
Prep ID:
Std. Methods 3030 E.
Analytical Method ID:
Std. Methods 3111 B.
Instrument:
iCE 3500, FLAA
Matrix:
Aqueous (water, wastewater, groundwater)
Sample volume used:
50 mL Dilution Factor: 25
Analyst:
SE
Location ID
Smp Date
SCG # Results Flaes
MDL RL Units
MW -18
03/15/18
418228.A 116,303
250 1,250 pg/L
Client:
Alexco Inc.
Analyte:
Magnesium, Mg — pis
Prep Date:
03/20/2018
Analysis Date:
03/222018
Approved Method Source:
40 CFR 136.3
Prep ID:
Std. Methods 3030 E.
Analytical Method [D:
Std. Methods 3111 B.
Instrument:
iCE 3500, FLAA
Matrix:
Aqueous (water, wastewater, groundwater)
Sample volume used-
50 mL Dilution Factor: 50
Analyst:
SE
Location ID
Smp Date
SCG # Results Flags
MDL RL Units
MW -18
03/15/18
418228.A 27,548
30 155 pglL
Qualifiers.
E - Extrapolated value Value exceeds calibration range
Fi - Analysts exceeded holding lime
J — Estimated value detected below the RUMRL
S — Spike recovery outside acceptance llmiLS
U - Analytc not detected
X - See case narrative
Conlldenllal and Privileged
10 -Apr -19