2010-01-14_REPORT - M2007044

• Permit No: M2007044
• IBM Index Class Name: REPORT
• Doc Date: 1/14/2010
• Doc Name: Fourth quarter 2009 Hydrological Report
• From: Energy Fuels Resources
• To: DRMS
• Email Name: GRM
• Media Type: D
• Archive: No

Summary of Quarterly Hydrological Monitoring
Monitoring Activities
The following field monitoring and sampling activities were performed during the Fourth
Quarter 2009 (October through December 2009):
• December 1, 2009 - PR Spring, DP Spring and the Whirlwind Mine Decline
(sump) were measured for field parameters
• December 10, 2009 -Monitoring Well W-1 was measured for field parameters
and sampled
Whirlwind Treatment Plant
Mine water from the Whirlwind Mine is pumped to the surface, stored in the untreated
water tank, treated and discharged to the middle tributary of Lumsden Creek. Discharge
of treated water from the Whirlwind Mine is allowed in accordance with Colorado
Discharge Permit System (CDPS) permit number CO-0047562. The mine was dewatered
continuously from November 28, 2007 (when treatment and discharge began) to January
29, 2008 (when the mine was pumped dry). Since that time, mine water has been treated
and discharged, as necessary, to keep the mine dewatered. Following the December 2009
batch treatment of mine water, collection of mine water for treatment ceased at the
Whirlwind Mine. At this time mine water will be allowed to accumulate in the mine
workings. The pumping, treatment and discharge of mine water will be reevaluated in
mid-2010. Refer to Section 1 of the Hydrological Report for a summary of the mine
water treatment.
Whirlwind Mine and Packrat Mine
The inflow within the Whirlwind Mine decline cannot be measured directly because it
occurs over approximately 100 feet of the decline and within the drifts and collects in the
mine sump and is subsequently pumped into the untreated water tank on the surface. The
Whirlwind Mine inflow is estimated based on the volume of water treated and
estimations of the volume of water evaporated off the untreated water tank and brought
out of the mine in ventilated air. The field parameters from the Whirlwind Mine water
were measured at the mine sump. The flow rate and field parameters from the Whirlwind
Mine water are included in Section 2 of the Hydrological Report. Analytical data from
previously collected samples from the Whirlwind Mine are summarized in Table 1.
Characterization of mine water in the Packrat Mine could not be conducted because the
mine is not yet accessible. Section 3 of the Hydrological Report is reserved for field data
collected from the Packrat Mine at such time that is becomes accessible and is monitored.
DP Spring and PR Suring
The flows at DP Spring and PR Spring were estimated by determining the time required
to fill a 5-gallon bucket. Field parameters from the springs were measured in the stock
tanks located at the springs. The flow rates and field parameters at DP Spring are
consistent with historical records with the exception of pH and dissolved oxygen levels
that are slightly elevated over previous quarters. The flow rate at PR Spring was