2023-10-31_HYDROLOGY - M2007044

• Permit No: M2007044
• IBM Index Class Name: Hydrology
• Doc Date: 10/31/2023
• Doc Name: Hydrology Report
• From: Energy Fuels Resources Inc
• To: DRMS
• Annual Report Year: 2023
• Report Quarter_Month: 3
• Email Name: ACY
• Email Name: THM
• Media Type: D
• Archive: No

WHIRLWIND MINE,PERMIT NO.M-2007-044
THIRD QUARTER 2023 HYDROLOGICAL REPORT
Attachment 4.DP Spring
Dissolve Dissolvea bpeCITIC xygen-
Monitoring Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction
Date (Y/N) (gpm) (s.u.) (deg.C) (mg/L) (US/cm) Potential(mV) Comments
3/10/2008 No 6 to 7 NM NM NM NM NM Sunny,Ave. of 2 feet snowpack
6/19/2008 No 7.2 742 11.0 7.22 524 126 Sunny, Dry
9/8/2008 No 5.2 800 11.9 9.49 544 166 Sunny, Dry
12/15/2008 No 82 7.96 4.8 9.42 532 97 Snowing,4"snowpack
2/10/2009 No 85 5.22 4.7 9.30 562 126 Sunny, Cold, 34"snowpack
4/20/2009 No 8.3 7.64 66 9.16 546 190 Sunny, Dry
8/11/2009 No 59 7.68 12.0 8.25 532 190 Sunny, Hot, Dry
12/1/2009 No 79 8.11 4.8 1054 548 115 Cold, clear skies
2/2/2010 No 79 6.73 47 10.71 526 177 Cold, clear skies, 3 ft of snow
6/2/2010 No 83 7.53 88 11.62 554 200 Sunny, Dry
7/28/2010 No 6.8 768 12.6 7.57 535 114 Sunny, Dry
11/4/2010 No 70 7.94 71 8.66 535 190 Sunny, Dry
4/18/2011 No 8.1 7.59 66 9.23 533 NM* Make-up for missed 1 Q1 1 monitoring,Sunny,warm,
clear skies
5/24/2011 No 9.2 7.81 8.0 8.43 551 62 Light showers,warm
8/15/2011 No 79 7.59 122 7.07 560 203 Partly cloudy,warm
10/25/2011 No 81 7.51 11 8 7.64 545 198 Overcast, light rain
3/28/2012 No 77 7.62 10.8 7.98 568 186 Dry and calm
8/7/2012 No 7.5 7.66 12.0 8.06 569 249 Clear water In Tank
11/14/2012 No NM 6.05 78 54.8% 769 129.2
3/18/2013 No 8.0 7.56 53 44.9% 577 231.7
6/4/2013 No 67 8.57 96 87.1% 533 2171 water was clear
8/14/2013 N/A N/A N/A N/A N/A N/A N/A field notes were lost
11/12/2013 No 5.9 6.44 106 7.66 501 126.8
Q1 2014 No NM NM NM NM NM NM Inaccessible due to county road conditions
6/17/2014 No 6.0 60 11 36 6.05 629.0 185.1
9/9/2014 No 6.0 7.1 12.81 493 536.6 184
11/13/2014 No 70 7.1 7.54 564 5370 119
3/31/2015 No 67 7.2 10.00 540 578.0 167
5/29/2015 No 70 7.1 11 40 8.02 532.7 261
11/9/2015 No 40 6.6 9.00 4.05 528.7 359
11/9/2015 No 40 6.6 9.00 4.05 528.7 359
3/31/2016 No 80 7.26 6.9 1 26 523.5 252
6/1/2016 Yes 65 6.05 91 1 25 541 476
8/3/2016 No 38 7.31 1532 939 549.4 255
10/12/2016 No 43 7.27 11 26 9.97 545.4 220
3/24/2017 No 75 6.86 934 11.25 513.0 456
6/7/2017 Yes 60 7.17 12.52 5.06 522.7 367