2019-07-30_HYDROLOGY - M2007044

• Permit No: M2007044
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/30/2019
• Doc Name: Hydrology Report
• From: Energy Fuels
• To: DRMS
• Annual Report Year: 2019
• Report Quarter_Month: 2
• Email Name: ACY
• Media Type: D
• Archive: No

WHIRLWIND MINE, PERMIT NO.M-2007-044
SECOND QUARTER 2019 HYDROLOGICAL REPORT
Attachment 8. Rajah 49 Mine Thornton Portal
Dissolved Specific Oxygen-
Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction
Sample Date Y/N pm S.U. (deg.C m /L (uS/cm Potential mV Comments
9/21/2009 Yes 1-2 gpm 8.58 10.6 7.71 938 130 Sunny, dry,see Table 5
6/30/2010 Yes 1-2 gpm 8.9 7.8 10.12 889 153 Hot,clear skies, dry, see Table 5
5/24/2011 Yes negligible 9.16 11.1 8.03 906 120 Ptly cloudy,warm, see Table 5
5/30/2012 Yes <1 gpm 9.67 6.4 9.19 939 NM OPR Probe Broken
6/17/2013 Yes <1 qPM 8.48 7.95 14.7% 928 -57.2 water was clear
6/17/2014 Yes <1 gpm 8.64 10.85 6.3 973 146.2
8/5/2015 Yes <lgpm 8.35 12.98 3.61 1030 251
6/2/2016 Yes <lgpm 8.17 10.04 1.60 888.8 214
6/7/2017 Yes <lgpm 8.15 12.21 4.52 910.7 329
6/20/2018 1 Yes <lgpm 8.59 9.55 12.04 642 -4.5
6/25/2019 1 Yes <lgpm 8.80 10.5 4.46 859 196