2021-10-12_HYDROLOGY - M2007044

• Permit No: M2007044
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/12/2021
• Doc Name: Hydrology Report
• From: Energy Fuels
• To: DRMS
• Annual Report Year: 2021
• Report Quarter_Month: 3
• Email Name: ACY
• Media Type: D
• Archive: No

■r a. wi a� air Ma M M r m 4m i m
WHIRLWIND MINE, PERMIT NO. M-2007-044
THIRD QUARTER 2021 HYDROLOGICAL REPORT
Attachment 5. PR Spring
Dissolved Specific Oxygen-
Monitoring Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction
Date Y/N ( pm) (s.U.) (deg. C) (m /L) (US/cm) Potential(mV) Comments
Q1 2019 No NM NM NM NM NM NM Inaccessible due to county road conditions
6/25/2019 Yes 6.5 8.03 12.20 6.44 785.0 238
9/13/2019 No 4.2 7.88 12.59 9.27 812.0 295
11/8/2019 No 4.9 8.10 11.14 10.34 802.7 337
3/27/2020 No 2.5 8.10 9.19 10.70 773.0 896
6/24/2020 Yes 4.5 7.98 11.49 9.88 754.0 413
9/11/2020 No 2.8 8.10 11.65 8.51 883.0 242
11/6/2020 No 2.0 8.25 11.19 8.92 853.0 251
Q1 2021 No NM NM NM NM NM NM 1 Inaccessible due to county road conditions
6/18/2021 No 2.0 6.78 12.06 10.48 860.0 176
7/13/2021 Yes 5.0 7.58 14.15 9.55 819.0 255
9/9/2021 No 5.0 7.91 12.26 9.25 857.0 253
*-ORP Probe broken during 4/18/11 Monitoring Event.
**- Meter malfunctioned during site visit-no measurements were taken.
Note: PR Spring not accessible in February or March,2010 due to deep snow
NM=Not Measured