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2010-02-15_HYDROLOGY - M2007044
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2010-02-15_HYDROLOGY - M2007044
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Last modified
9/4/2020 4:16:12 AM
Creation date
1/14/2016 4:33:11 PM
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Template:
DRMS Permit Index
Permit No
M2007044
IBM Index Class Name
Hydrology
Doc Date
2/15/2010
Doc Name
Submittal of Jan. 2010 Discharge Monitoring Report
From
Energy Fuels Resources Corp
To
DRMS
Media Type
D
Archive
No
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ATTACHMENT A <br /> 1225: Commence adding No.8-12 sand to finish sand pack of well. <br /> 1304: Tagged top of sand with tremie pipe at 64.5 ft BTOC;continue to add sand. <br /> 1350: Tagged bottom(sand)with tremie pipe at 65 ft;noted ledge or obstruction at a higher depth in borehole <br /> and had to work tremie downhole. The use of a water level indicator tape indicated an obstruction at <br /> 48.6 ft BTOC. <br /> 1419: Tremie not accepting sand readily;shorten tremie pipe to approximately 42 ft. <br /> 1445: In attempt to tag top of sand,continuously encounter obstruction at approximately 48.5 ft BTOC. <br /> Rigged to run air in tremie and made successful blow out of water,slough,and sand and passed tremie <br /> through bridge area.Tagged bottom at 64.05 ft—most likely top of sand pack. <br /> 1535: After adding more sand,tremie full and refusing take sand. Pulled up and attempted to re-tag top. <br /> 1615: Could not get past a bridge at 47.7 ft BTOC. Could not rig air in long section of tremie pipe,so pulled <br /> a joint and blew air that resulted in ejection of water and borehole slough(including 2-inch piece of <br /> sandstone). Still could not pass through obstruction to tag top of sand. <br /> WWL contacted Zach Rogers and Frank Filas of EFR and informed them of the situation. WWL <br /> informed Mr.Filas that the screen is likely within 1 ft of being covered by sand at a depth BTOC of 63 <br /> ft and that static water level is approximately 73.5 ft BTOC. A possible void may exist between the <br /> bridge at 47.7 ft BTOC and sand pack at approximately 64 ft BTOC. This section of the boring was <br /> dry when drilling. It was WWL's suggestion that because this interval was above static water level in <br /> dry formation,that the well will likely perform satisfactorily as a monitoring well. The bentonite <br /> pellets,bentonite grout,and cement surface seal will effectively seal the upper portion of the borehole <br /> from the screened interval. Frank Filas agreed,and that performance of the well in the future will be <br /> evaluated. <br /> Two 5-gallon buckets of bentonite pellets were added to the borehole from the surface. Tagged top of <br /> pellets at 40.52 ft BTOC. Prepare to grout remaining borehole with bentonite slurry grout. <br /> 1810: Finish pumping bentonite grout to within 2 ft of top of steel surface casing. Added 8-12 sand on top of <br /> bentonite grout to elevate annulus within steel surface casing. <br /> 1842: GSD and WWL off site for day. <br /> October 12,2008 <br /> 1105: GSD arrives at Whirlwind Mine,monitoring well MW-W 1 site. <br /> 1115: WWL arrives at Whirlwind Mine,monitoring well MW-W1 site. Weather is cool,clear,slight breeze. <br /> 1122: DTW is 73.52 ft BTOC. Begin rigging to develop well. Will use 1.5-inch steel tremie pipe to air lift <br /> purge water from 2-inch well casing. <br /> 1149: Begin air lift purging of well. Purge water is very turbid and carrying clay and silt particles. <br /> 1158: Stop air and assess well recovery. Water level is recovering to within 1.5 ft of static water level within <br /> approximately 10 minutes. <br /> Western Water&Land,Inc. Page 3 of 4 <br />
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